Update main_window.py

.github/FUNDING.yml

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+github: [Yuvi9587]

LICENSE

@@ -1,21 +1,11 @@
-MIT License
+Custom License - No Commercial Use
 
-Copyright (c) 2025 [Yuvi9587]
+Copyright [Yuvi9587] [2025]
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Permission is hereby granted to any person obtaining a copy of this software and associated documentation files (the "Software"), to use, copy, modify, and distribute the Software for **non-commercial purposes only**, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+1. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+2. Proper credit must be given to the original author in any public use, distribution, or derivative works.
+3. Commercial use, resale, or sublicensing of the Software or any derivative works is strictly prohibited without explicit written permission.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND...

features.md

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+# Kemono Downloader - Feature Guide
+This guide provides a comprehensive overview of all user interface elements, input fields, buttons, popups, and functionalities available in the Kemono Downloader.
+
+## 1. Main Interface & Workflow
+These are the primary controls you'll interact with to initiate and manage downloads.
+
+### 1.1. Core Inputs
+**🔗 Creator/Post URL Input Field**  
+- **Purpose**: Paste the URL of the content you want to download.  
+- **Supported Sites**: Kemono.su, Coomer.party, Simpcity.su.  
+- **Supported URL Types**:  
+  - Creator pages (e.g., `https://kemono.su/patreon/user/12345`).  
+  - Individual posts (e.g., `https://kemono.su/patreon/user/12345/post/98765`).  
+- **Note**: When ⭐ Favorite Mode is active, this field is disabled. For Simpcity.su URLs, the "Use Cookie" option is mandatory and auto-enabled.
+
+**🎨 Creator Selection Button**  
+- **Icon**: 🎨 (Artist Palette)  
+- **Purpose**: Opens the "Creator Selection" dialog to browse and queue downloads from known creators.  
+- **Dialog Features**:  
+  - Loads creators from `creators.json`.  
+  - **Search Bar**: Filter creators by name.  
+  - **Creator List**: Displays creators with their service (e.g., Patreon, Fanbox).  
+  - **Selection**: Checkboxes to select one or more creators.  
+  - **Download Scope**: Organize downloads by Characters or Creators.  
+  - **Add to Queue**: Adds selected creators or their posts to the download queue.
+
+**Page Range (Start to End) Input Fields**  
+- **Purpose**: Specify a range of pages to fetch for creator URLs.  
+- **Usage**: Enter the starting and ending page numbers.  
+- **Behavior**:  
+  - If blank, all pages are processed.  
+  - Disabled for single post URLs.
+
+**📁 Download Location Input Field & Browse Button**  
+- **Purpose**: Specify the main directory for downloaded files.  
+- **Usage**: Type the path or click "Browse..." to select a folder.  
+- **Requirement**: Mandatory for all download operations.
+
+### 1.2. Action Buttons
+**⬇️ Start Download / 🔗 Extract Links Button**  
+- **Purpose**: Initiates downloading or link extraction.  
+- **Behavior**:  
+  - Shows "🔗 Extract Links" if "Only Links" is selected.  
+  - Otherwise, shows "⬇️ Start Download".  
+  - Supports single-threaded or multi-threaded downloads based on settings.
+
+**🔄 Restore Download Button**  
+- **Visibility**: Appears if an incomplete session is detected on startup.  
+- **Purpose**: Resumes a previously interrupted download session.
+
+**⏸️ Pause / ▶️ Resume Download Button**  
+- **Purpose**: Pause or resume the ongoing download.  
+- **Behavior**: Toggles between "Pause" and "Resume". Some UI settings can be changed while paused.
+
+**❌ Cancel & Reset UI Button**  
+- **Purpose**: Stops the current operation and performs a "soft" reset.  
+- **Behavior**: Halts background threads, preserves URL and Download Location inputs, resets other settings.
+
+**🔄 Reset Button (in the log area)**  
+- **Purpose**: Performs a "hard" reset when no operation is active.  
+- **Behavior**: Clears all inputs, resets options to default, and clears logs.
+
+## 2. Filtering & Content Selection
+These options allow precise control over downloaded content.
+
+### 2.1. Content Filtering
+**🎯 Filter by Character(s) Input Field**  
+- **Purpose**: Download content related to specific characters or series.  
+- **Usage**: Enter comma-separated character names.  
+- **Advanced Syntax**:  
+  - `Nami`: Simple filter.  
+  - `(Vivi, Ulti)`: Grouped filter. Matches posts with "Vivi" OR "Ulti". Creates a shared folder like `Vivi Ulti` if subfolders are enabled.  
+  - `(Boa, Hancock)~`: Aliased filter. Treats "Boa" and "Hancock" as the same entity.
+
+**Filter: [Type] Button (Character Filter Scope)**  
+- **Purpose**: Defines where the character filter is applied. Cycles on click.  
+- **Options**:  
+  - **Filter: Title** (Default): Matches post titles.  
+  - **Filter: Files**: Matches filenames.  
+  - **Filter: Both**: Checks title first, then filenames.  
+  - **Filter: Comments (Beta)**: Checks filenames, then post comments.
+
+**🚫 Skip with Words Input Field**  
+- **Purpose**: Exclude posts/files with specified keywords (e.g., `WIP`, `sketch`).
+
+**Scope: [Type] Button (Skip Words Scope)**  
+- **Purpose**: Defines where skip words are applied. Cycles on click.  
+- **Options**:  
+  - **Scope: Posts** (Default): Skips posts if the title contains a skip word.  
+  - **Scope: Files**: Skips files if the filename contains a skip word.  
+  - **Scope: Both**: Applies both rules.
+
+**✂️ Remove Words from Name Input Field**  
+- **Purpose**: Remove unwanted text from filenames (e.g., `patreon`, `[HD]`).
+
+### 2.2. File Type Filtering
+**Filter Files (Radio Buttons)**  
+- **Purpose**: Select file types to download.  
+- **Options**:  
+  - **All**: All file types.  
+  - **Images/GIFs**: Common image formats.  
+  - **Videos**: Common video formats.  
+  - **🎧 Only Audio**: Common audio formats.  
+  - **📦 Only Archives**: Only `.zip` and `.rar` files.  
+  - **🔗 Only Links**: Extracts external links without downloading files.
+
+**Skip .zip / Skip .rar Checkboxes**  
+- **Purpose**: Skip downloading `.zip` or `.rar` files.  
+- **Behavior**: Disabled when "📦 Only Archives" is active.
+
+## 3. Download Customization
+Options to refine the download process and output.
+
+- **Download Thumbnails Only**: Downloads small preview images instead of full-resolution files.  
+- **Scan Content for Images**: Scans post HTML for `<img>` tags, crucial for images in descriptions.  
+- **Compress to WebP**: Converts images to WebP format (requires Pillow library).  
+- **🗄️ Custom Folder Name (Single Post Only)**: Specify a custom folder name for a single post's content (appears if subfolders are enabled).
+
+## 4. 📖 Manga/Comic Mode
+A mode for downloading creator feeds in chronological order, ideal for sequential content.
+
+- **Activation**: Active when downloading a creator's entire feed (not a single post).  
+- **Core Behavior**: Fetches all posts, processing from oldest to newest.  
+- **Filename Style Toggle Button (in the log area)**:  
+  - **Purpose**: Controls file naming in Manga Mode. Cycles on click.  
+  - **Options**:  
+    - **Name: Post Title**: First file named after post title; others keep original names.  
+    - **Name: Original File**: Files keep server-provided names, with optional prefix.  
+    - **Name: Title+G.Num**: Global numbering with post title prefix (e.g., `Chapter 1_001.jpg`).  
+    - **Name: Date Based**: Sequential naming by post date (e.g., `001.jpg`), with optional prefix.  
+    - **Name: Post ID**: Files named after post ID to avoid clashes.  
+    - **Name: Date + Title**: Combines post date and title for filenames.
+
+## 5. Folder Organization & Known.txt
+Controls for structuring downloaded content.
+
+- **Separate Folders by Name/Title Checkbox**: Enables automatic subfolder creation.  
+- **Subfolder per Post Checkbox**: Creates subfolders for each post, named after the post title.  
+- **Known.txt Management UI (Bottom Left)**:  
+  - **Purpose**: Manages a local `Known.txt` file for series, characters, or terms used in folder creation.  
+  - **List Display**: Shows primary names from `Known.txt`.  
+  - **➕ Add Button**: Adds names or groups (e.g., `(Character A, Alias B)~`).  
+  - **⤵️ Add to Filter Button**: Select names from `Known.txt` for the character filter.  
+  - **🗑️ Delete Selected Button**: Removes selected names from `Known.txt`.  
+  - **Open Known.txt Button**: Opens the file in the default text editor.  
+  - **❓ Help Button**: Opens this feature guide.  
+  - **📜 History Button**: Views recent download history.
+
+## 6. ⭐ Favorite Mode (Kemono.su Only)
+Download from favorited artists/posts on Kemono.su.
+
+- **Enable Checkbox ("⭐ Favorite Mode")**:  
+  - Switches to Favorite Mode.  
+  - Disables the main URL input.  
+  - Changes action buttons to "Favorite Artists" and "Favorite Posts".  
+  - Requires cookies.  
+- **🖼️ Favorite Artists Button**: Select and download from favorited artists.  
+- **📄 Favorite Posts Button**: Select and download specific favorited posts.  
+- **Favorite Download Scope Button**:  
+  - **Scope: Selected Location**: Downloads favorites to the main directory.  
+  - **Scope: Artist Folders**: Creates subfolders per artist.
+
+## 7. Advanced Settings & Performance
+- **🍪 Cookie Management**:  
+  - **Use Cookie Checkbox**: Enables cookies for restricted content.  
+  - **Cookie Text Field**: Paste cookie string.  
+  - **Browse... Button**: Select a `cookies.txt` file (Netscape format).  
+- **Use Multithreading Checkbox & Threads Input**:  
+  - **Purpose**: Configures simultaneous operations.  
+  - **Behavior**: Sets concurrent post processing (creator feeds) or file downloads (single posts).  
+- **Multi-part Download Toggle Button**:  
+  - **Purpose**: Enables/disables multi-segment downloading for large files.  
+  - **Note**: Best for large files; less efficient for small files.
+
+## 8. Logging, Monitoring & Error Handling
+- **📜 Progress Log Area**: Displays messages, progress, and errors.  
+- **👁️ / 🙈 Log View Toggle Button**: Switches between Progress Log and Missed Character Log (skipped posts).  
+- **Show External Links in Log**: Displays external links (e.g., Mega, Google Drive) in a secondary panel.  
+- **Export Links Button**: Saves extracted links to a `.txt` file in "Only Links" mode.  
+- **Download Extracted Links Button**: Downloads files from supported external links in "Only Links" mode.  
+- **🆘 Error Button & Dialog**:  
+  - **Purpose**: Active if files fail to download.  
+  - **Dialog Features**:  
+    - Lists failed files.  
+    - Retry failed downloads.  
+    - Export failed URLs to a text file.
+
+## 9. Application Settings (⚙️)
+- **Appearance**: Switch between Light and Dark themes.  
+- **Language**: Change UI language (restart required).

note.md

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+# 🛠️ KemonoDownloader Refactor Notes
+
+## What's Going On
+
+This project used to be one giant messy App Script. It worked, but it was hard to maintain or expand. So I cleaned it up and split everything into smaller, more manageable files to make it easier to read, update, and add new stuff later.
+
+**⚠️ Heads up:** Since I'm still in the middle of refactoring things, some features might be broken or not working right now. The layout is better, but I still need to update some parts of the logic and dependencies.
+
+---
+
+## 📁 Folder Layout
+
+```
+KemonoDownloader/
+├── main.py                      # Where the app starts
+├── assets/                      # Icons and other static files
+│   └── Kemono.ico
+├── data/ 
+│   └── creators.json
+├── logs/                        # Error logs and other output
+│   └── uncaught_exceptions.log
+└── src/                         # Main code lives here
+    ├── __init__.py
+    ├── ui/                      # UI-related code
+    │   ├── __init__.py
+    │   ├── main_window.py
+    │   └── dialogs/
+    │       ├── __init__.py
+    │       ├── ConfirmAddAllDialog.py
+    │       ├── CookieHelpDialog.py
+    │       ├── DownloadExtractedLinksDialog.py
+    │       ├── DownloadFinishedDialog.py
+    │       └── ... (more dialogs)
+    ├── core/                    # The brain of the app
+    │   ├── __init__.py
+    │   ├── manager.py
+    │   ├── workers.py
+    │   └── api_client.py
+    ├── services/                # Downloading stuff happens here
+    │   ├── __init__.py
+    │   ├── drive_downloader.py
+    │   └── multipart_downloader.py
+    ├── utils/                   # Helper functions
+    │   ├── __init__.py
+    │   ├── file_utils.py
+    │   ├── network_utils.py
+    │   └── text_utils.py
+    ├── config/                  # Constants and settings
+    │   ├── __init__.py
+    │   └── constants.py
+    └── i18n/                    # Translations (if needed)
+        ├── __init__.py
+        └── translator.py
+```
+
+---
+
+## ✅ Why Bother Refactoring?
+
+- Everything’s now broken into smaller parts, so it’s easier to work with.
+- Easier to test, fix, and add stuff.
+- Prepping the project to grow without becoming a mess again.
+- Separated the UI from the app logic so they don’t get tangled.
+
+---
+
+## 🚧 What’s Still Broken
+
+- Some features don’t work yet or haven’t been tested since the changes.
+- Still need to:
+  - Reconnect the UI to the updated logic.
+  - Move over some of the old script code into proper modules.
+  - Make sure settings and cookies work properly in the new setup.
+
+---
+
+## 📌 To-Do List
+
+- Test all the dialogs and UI stuff.
+- Make sure the download services and API calls are working.
+- Reconnect the UI with the new logic in `core/manager.py`.
+- Add more logging and maybe some unit tests too.
+
+---
+
+## 🐞 Found a Bug?
+
+If something's busted:
+
+- Feel free to open an issue if you're using this.
+- Or just message me. Feedback helps a lot while I’m still figuring things out.
+
+Thanks for checking it out! Still a work in progress, but getting there.

readme.md

@@ -1,240 +1,179 @@
-# Kemono Downloader v3.4.0
+<h1 align="center">Kemono Downloader v5.6.0</h1>
 
-A powerful, feature-rich GUI application for downloading content from **[Kemono.su](https://kemono.su)** and **[Coomer.party](https://coomer.party)**.  
-Built with **PyQt5**, this tool is ideal for users who want deep filtering, customizable folder structures, efficient downloads, and intelligent automation — all within a modern, user-friendly graphical interface.
+<table align="center">
+  <tr>
+    <td align="center">
+      <img src="Read/Read.png" alt="Default Mode" width="400"/><br>
+      <strong>Default</strong>
+    </td>
+    <td align="center">
+      <img src="Read/Read1.png" alt="Favorite Mode" width="400"/><br>
+      <strong>Favorite mode</strong>
+    </td>
+  </tr>
+  <tr>
+    <td align="center">
+      <img src="Read/Read2.png" alt="Single Post" width="400"/><br>
+      <strong>Single Post</strong>
+    </td>
+    <td align="center">
+      <img src="Read/Read3.png" alt="Manga/Comic Mode" width="400"/><br>
+      <strong>Manga/Comic Mode</strong>
+    </td>
+  </tr>
+</table>
+---
+
+A powerful, feature-rich GUI application for downloading content from **[Kemono.su](https://kemono.su)** (and its mirrors like kemono.party) and **[Coomer.party](https://coomer.party)** (and its mirrors like coomer.su).
+Built with PyQt5, this tool is designed for users who want deep filtering capabilities, customizable folder structures, efficient downloads, and intelligent automation, all within a modern and user-friendly graphical interface.
+
+*This v5.0.0 release marks a significant feature milestone. Future updates are expected to be less frequent, focusing on maintenance and minor refinements.*
+*Update v5.2.0 introduces multi-language support, theme selection, and further UI refinements.*
+
+<p align="center">
+  <a href="features.md">
+    <img alt="Features" src="https://img.shields.io/badge/📚%20Full%20Feature%20List-FFD700?style=for-the-badge&logoColor=black&color=FFD700">
+  </a>
+  <a href="LICENSE">
+    <img alt="License" src="https://img.shields.io/badge/📝%20License-90EE90?style=for-the-badge&logoColor=black&color=90EE90">
+  </a>
+  <a href="note.md">
+    <img alt="Note" src="https://img.shields.io/badge/⚠️%20Important%20Note-FFCCCB?style=for-the-badge&logoColor=black&color=FFCCCB">
+  </a>
+</p>
 
 ---
 
-## ✨ What's New in v3.4.0?
+## Feature Overview
 
-This version brings significant enhancements to manga/comic downloading, filtering capabilities, and user experience:
+Kemono Downloader offers a range of features to streamline your content downloading experience:
+
+-   **User-Friendly Interface:** A modern PyQt5 GUI for easy navigation and operation.
+-   **Flexible Downloading:**
+    -   Download content from Kemono.su (and mirrors) and Coomer.party (and mirrors).
+    -   Supports creator pages (with page range selection) and individual post URLs.
+    -   Standard download controls: Start, Pause, Resume, and Cancel.
+-   **Powerful Filtering:**
+    -   **Character Filtering:** Filter content by character names. Supports simple comma-separated names and grouped names for shared folders.
+    -   **Keyword Skipping:** Skip posts or files based on specified keywords.
+    -   **Filename Cleaning:** Remove unwanted words or phrases from downloaded filenames.
+    -   **File Type Selection:** Choose to download all files, or limit to images/GIFs, videos, audio, or archives. Can also extract external links only.
+-   **Customizable Downloads:**
+    -   **Thumbnails Only:** Option to download only small preview images.
+    -   **Content Scanning:** Scan post HTML for `<img>` tags and direct image links, useful for images embedded in descriptions.
+    -   **WebP Conversion:** Convert images to WebP format for smaller file sizes (requires Pillow library).
+-   **Organized Output:**
+    -   **Automatic Subfolders:** Create subfolders based on character names (from filters or `Known.txt`) or post titles.
+    -   **Per-Post Subfolders:** Option to create an additional subfolder for each individual post.
+-   **Manga/Comic Mode:**
+    -   Downloads posts from a creator's feed in chronological order (oldest to newest).
+    -   Offers various filename styling options for sequential reading (e.g., post title, original name, global numbering).
+-   **⭐ Favorite Mode:**
+    -   Directly download from your favorited artists and posts on Kemono.su.
+    -   Requires a valid cookie and adapts the UI for easy selection from your favorites.
+    -   Supports downloading into a single location or artist-specific subfolders. 
+-   **Performance & Advanced Options:**
+    -   **Cookie Support:** Use cookies (paste string or load from `cookies.txt`) to access restricted content.
+    -   **Multithreading:** Configure the number of simultaneous downloads/post processing threads for improved speed.
+-   **Logging:**
+    -   A detailed progress log displays download activity, errors, and summaries.
+-   **Multi-language Interface:** Choose from several languages for the UI (English, Japanese, French, Spanish, German, Russian, Korean, Chinese Simplified).
+-   **Theme Customization:** Selectable Light and Dark themes for user comfort.
 
 ---
 
-### 📖 Enhanced Manga/Comic Mode
-
-- **New "Date Based" Filename Style:**
-
-  - Perfect for truly sequential content! Files are named numerically (e.g., `001.jpg`, `002.jpg`, `003.ext`...) across an *entire creator's feed*, strictly following post publication order.
-
-  - **Smart Numbering:** Automatically resumes from the highest existing number found in the series folder (and subfolders, if "Subfolder per Post" is enabled).
-
-  - **Guaranteed Order:** Disables multi-threading for post processing to ensure sequential accuracy.
-
-  - Works alongside the existing "Post Title" and "Original File Name" styles.
+## ✨ What's New in v5.3.0
+-   **Multi-Creator Post Fetching & Queuing:**
+    -   The **Creator Selection popup** (🎨 icon) has been significantly enhanced.
+    -   After selecting multiple creators, you can now click a new "**Fetch Posts**" button.
+    -   This will retrieve and display posts from all selected creators in a new view within the popup.
+    -   You can then browse these fetched posts (with search functionality) and select individual posts.
+    -   A new "**Add Selected Posts to Queue**" button allows you to add your chosen posts directly to the main download queue, streamlining the process of gathering content from multiple artists.
+    -   The traditional "**Add Selected to URL**" button is still available if you prefer to populate the main URL field with creator names.
+-   **Improved Favorite Download Queue Handling:**
+    -   When items are added to the download queue from the Creator Selection popup, the main URL input field will now display a placeholder message (e.g., "{count} items in queue from popup").
+    -   The queue is now more robustly managed, especially when interacting with the main URL input field after items have been queued from the popup.
 
 ---
 
-### ✂️ "Remove Words from Filename" Feature
+## ✨ What's New in v5.1.0
+-   **Enhanced Error File Management**: The "Error" button now opens a dialog listing files that failed to download. This dialog includes:
+    -   An option to **retry selected** failed downloads.
+    -   A new **"Export URLs to .txt"** button, allowing users to save links of failed downloads either as "URL only" or "URL with details" (including post title, ID, and original filename).
+    -   Fixed a bug where files skipped during retry (due to existing hash match) were not correctly removed from the error list.
+-   **Improved UI Stability**: Addressed issues with UI state management to more accurately reflect ongoing download activities (including retries and external link downloads). This prevents the "Cancel" button from becoming inactive prematurely while operations are still running.
 
-- Specify comma-separated words or phrases (case-insensitive) that will be automatically removed from filenames.
-
-- Example: `patreon, [HD], _final` transforms `AwesomeArt_patreon_[HD]_final.jpg` into `AwesomeArt.jpg`.
+## ✨ What's New in v5.2.0
+-   **Multi-language Support:** The interface now supports multiple languages: English, Japanese, French, Spanish, German, Russian, Korean, and Chinese (Simplified). Select your preferred language in the new Settings dialog.
+-   **Theme Selection:** Choose between Light and Dark application themes via the Settings dialog for a personalized viewing experience.
+-   **Centralized Settings:** A new Settings dialog (accessible via a settings button, often with a gear icon) provides a dedicated space for language and appearance customizations.
+-   **Internal Localization:** Introduced `languages.py` for managing UI translations, streamlining the addition of new languages by contributors.
 
 ---
 
-### 📦 New "Only Archives" File Filter Mode
-
-- Exclusively downloads `.zip` and `.rar` files.
-
-- Automatically disables conflicting options like "Skip .zip/.rar" and external link logging.
-
----
-
-### 🗣️ Improved Character Filter Scope - "Comments (Beta)"
-
-- **File-First Check:** Prioritizes matching filenames before checking post comments for character names.
-
-- **Comment Fallback:** Only checks comments if no filename match is found, reducing unnecessary API calls.
-
----
-
-### 🧐 Refined "Missed Character Log"
-
-- Displays a capitalized, alphabetized list of key terms from skipped post titles.
-
-- Makes it easier to spot patterns or characters that might be unintentionally excluded.
-
----
-
-### 🚀 Enhanced Multi-part Download Progress
-
-- Granular visibility into active chunk downloads and combined speed for large files.
-
----
-
-### 🗺️ Updated Onboarding Tour
-
-- Improved guide for new users, covering v3.4.0 features and existing core functions.
-
----
-
-### 🛡️ Robust Configuration Path
-
-- Settings and `Known.txt` are now stored in the system-standard application data folder (e.g., `AppData`, `~/.local/share`).
-
----
-
-## 🖥️ Core Features
-
----
-
-### User Interface & Workflow
-
-- **Clean PyQt5 GUI** — Simple, modern, and dark-themed.
-
-- **Persistent Settings** — Saves preferences between sessions.
-
-- **Download Modes:**
-  - Single Post URL
-  - Entire Creator Feed
-
-- **Flexible Options:**
-  - Specify Page Range (disabled in Manga Mode)
-  - Custom Folder Name for single posts
-
----
-
-### 🧠 Smart Filtering
-
-- **Character Name Filtering:**
-  - Use `Tifa, Aerith` or group `(Boa, Hancock)` → folder `Boa Hancock`
-
-  - **Filter Scopes:**
-    - `Files`
-    - `Title`
-    - `Both (Title then Files)`
-    - `Comments (Beta - Files first)`
-
-- **Skip with Words:**
-  - Exclude with `WIP, sketch, preview`
-
-  - **Skip Scopes:**
-    - `Files`
-    - `Posts`
-    - `Both (Posts then Files)`
-
-- **File Type Filters:**
-  - `All`, `Images/GIFs`, `Videos`, `📦 Only Archives`, `🔗 Only Links`
-
-- **Filename Cleanup:**
-  - Remove illegal and unwanted characters or phrases
-
----
-
-### 📚 Manga/Comic Mode (Creator Feeds Only)
-
-- **Chronological Processing** — Oldest posts first
-
-- **Filename Style Options:**
-  - `Name: Post Title (Default)`
-  - `Name: Original File`
-  - `Name: Date Based (New)`
-
-- **Best With:** Character filters set to manga/series title
-
----
-
-### 📁 Folder Structure & Naming
-
-- **Subfolders:**
-  - Auto-created based on character name, post title, or `Known.txt`
-
-  - "Subfolder per Post" option for further nesting
-
-- **Smart Naming:** Cleans invalid characters and structures logically
-
----
-
-### 🖼️ Thumbnail & Compression Tools
-
-- **Download Thumbnails Only**
-
-- **Compress to WebP** (via Pillow)
-  - Converts large images to smaller WebP versions
-
----
-
-### ⚙️ Performance Features
-
-- **Multithreading:**
-  - For both post processing and file downloading
-
-- **Multi-part Downloads:**
-  - Toggleable in GUI
-  - Splits large files into chunks
-  - Granular chunk-level progress display
-
----
-
-### 📋 Logging & Progress
-
-- **Real-time Logs:** Activity, errors, skipped posts
-
-- **Missed Character Log:** Shows skipped keywords in easy-to-read list
-
-- **External Links Log:** Shows links (unless disabled in some modes)
-
-- **Export Links:** Save `.txt` of links (Only Links mode)
-
----
-
-### 🗃️ Config System
-
-- **Known.txt:**
-  - Stores names for smart folder suggestions
-  - Supports aliases via `(alias1, alias2)`
-
-- **Stored in Standard App Data Path**
-
-- **Editable Within GUI**
-
----
-
-## 💻 Installation
-
----
+## Installation
 
 ### Requirements
+-   Python 3.6 or higher
+-   pip (Python package installer)
 
-- Python 3.6 or higher  
-- pip
+### Install Dependencies
+Open your terminal or command prompt and run:
+
+```bash
+pip install PyQt5 requests Pillow mega.py
+```
+
+### Running the Application
+Navigate to the application's directory in your terminal and run:
+```bash
+python main.py
+```
+
+### Optional Setup
+-   **Main Inputs:**
+-   Place your `cookies.txt` in the root directory (if using cookies).
+-   Prepare your `Known.txt` and `creators.json` in the same directory for advanced filtering and selection features.
 
 ---
 
-### Install Dependencies
+## Troubleshooting
+
+### AttributeError: module 'asyncio' has no attribute 'coroutine'
+
+If you encounter an error message similar to:
+```
+AttributeError: module 'asyncio' has no attribute 'coroutine'. Did you mean: 'coroutines'?
+```
+This usually means that a dependency, often `tenacity` (used by `mega.py`), is an older version that's incompatible with your Python version (typically Python 3.10+).
+
+To fix this, activate your virtual environment and run the following commands to upgrade the libraries:
 
 ```bash
-pip install PyQt5 requests Pillow
-
+pip install --upgrade tenacity
+pip install --upgrade mega.py
 ```
 
-***
+---
 
-## **🛠️ Build a Standalone Executable (Optional)**
+## Contribution
 
-1. Install PyInstaller:
-```bash
-pip install pyinstaller
-```
+Feel free to fork this repo and submit pull requests for bug fixes, new features, or UI improvements!
 
-2. Run:
-```bash
-pyinstaller --name "Kemono Downloader" --onefile --windowed --icon="Kemono.ico" main.py
-```
+---
 
-3. Output will be in the `dist/` folder.
+## License
 
-***
+This project is under the Custom Licence
 
-## **🗂 Config Files**
+## Star History
 
-- `Known.txt` — character/show names used for folder organization
-- Supports grouped names in format: `(Name1, Name2)`
+<table align="center" style="border-collapse: collapse; border: none; margin-left: auto; margin-right: auto;">
+  <tr>
+    <td align="center" valign="middle" style="padding: 10px; border: none;">
+      <a href="https://www.star-history.com/#Yuvi9587/Kemono-Downloader&Date">
+        <img src="https://api.star-history.com/svg?repos=Yuvi9587/Kemono-Downloader&type=Date" alt="Star History Chart" width="650">
+      </a>
+</table>
 
-***
-
-## **💬 Feedback & Support**
-
-Issues? Suggestions?  
-Open an issue on the [GitHub repository](https://github.com/Yuvi9587/kemono-downloader) or join our community.
+👉 See [features.md](features.md) for the full feature list.

security.md

@@ -0,0 +1,19 @@
+# Security Policy
+
+## Supported Versions
+
+We are committed to maintaining and improving the Kemono Downloader. For the best experience and access to the latest security updates and features, we strongly recommend using the most recent versions of the application.
+
+| Version        | Supported Status                     |
+| -------------- | ------------------------------------ |
+| >= 5.0.0       | :white_check_mark: Actively Supported  |
+| 4.0.0 - 4.x.x  | :warning: Supported (Limited Features) |
+| < 4.0.0        | :x: End of Life (EOL)                |
+
+Users are encouraged to update to **v5.0.0 or newer** versions.
+
+## Active Maintenance
+
+The Kemono Downloader is actively maintained. We strive to address bugs, implement new features in a timely manner. If you discover any security vulnerabilities, please report them(details on reporting to be added if a formal process is established).
+
+We appreciate your help in keeping Kemono Downloader secure!

src/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/config/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/config/constants.py

@@ -0,0 +1,113 @@
+# --- Application Metadata ---
+CONFIG_ORGANIZATION_NAME = "KemonoDownloader"
+CONFIG_APP_NAME_MAIN = "ApplicationSettings"
+CONFIG_APP_NAME_TOUR = "ApplicationTour"
+
+# --- Filename and Folder Naming Styles ---
+STYLE_POST_TITLE = "post_title"
+STYLE_ORIGINAL_NAME = "original_name"
+STYLE_DATE_BASED = "date_based"
+STYLE_DATE_POST_TITLE = "date_post_title"
+STYLE_POST_TITLE_GLOBAL_NUMBERING = "post_title_global_numbering"
+STYLE_POST_ID = "post_id"  # Add this line
+MANGA_DATE_PREFIX_DEFAULT = ""
+
+# --- Download Scopes ---
+SKIP_SCOPE_FILES = "files"
+SKIP_SCOPE_POSTS = "posts"
+SKIP_SCOPE_BOTH = "both"
+
+CHAR_SCOPE_TITLE = "title"
+CHAR_SCOPE_FILES = "files"
+CHAR_SCOPE_BOTH = "both"
+CHAR_SCOPE_COMMENTS = "comments"
+
+FAVORITE_SCOPE_SELECTED_LOCATION = "selected_location"
+FAVORITE_SCOPE_ARTIST_FOLDERS = "artist_folders"
+
+# --- Download Status Constants ---
+FILE_DOWNLOAD_STATUS_SUCCESS = "success"
+FILE_DOWNLOAD_STATUS_SKIPPED = "skipped"
+FILE_DOWNLOAD_STATUS_FAILED_RETRYABLE_LATER = "failed_retry_later"
+FILE_DOWNLOAD_STATUS_FAILED_PERMANENTLY_THIS_SESSION = "failed_permanent_session"
+
+# --- Threading and Performance ---
+MAX_THREADS = 200
+RECOMMENDED_MAX_THREADS = 50
+SOFT_WARNING_THREAD_THRESHOLD = 40
+MAX_FILE_THREADS_PER_POST_OR_WORKER = 10
+POST_WORKER_BATCH_THRESHOLD = 30
+POST_WORKER_NUM_BATCHES = 4
+POST_WORKER_BATCH_DELAY_SECONDS = 2.5
+MAX_POST_WORKERS_WHEN_COMMENT_FILTERING = 3
+
+# --- Multipart Download Settings ---
+MIN_SIZE_FOR_MULTIPART_DOWNLOAD = 10 * 1024 * 1024  # 10 MB
+MAX_PARTS_FOR_MULTIPART_DOWNLOAD = 15
+
+# --- UI and Settings Keys (for QSettings) ---
+TOUR_SHOWN_KEY = "neverShowTourAgainV19"
+MANGA_FILENAME_STYLE_KEY = "mangaFilenameStyleV1"
+SKIP_WORDS_SCOPE_KEY = "skipWordsScopeV1"
+ALLOW_MULTIPART_DOWNLOAD_KEY = "allowMultipartDownloadV1"
+USE_COOKIE_KEY = "useCookieV1"
+COOKIE_TEXT_KEY = "cookieTextV1"
+CHAR_FILTER_SCOPE_KEY = "charFilterScopeV1"
+THEME_KEY = "currentThemeV2"
+SCAN_CONTENT_IMAGES_KEY = "scanContentForImagesV1"
+LANGUAGE_KEY = "currentLanguageV1"
+DOWNLOAD_LOCATION_KEY = "downloadLocationV1"
+
+# --- UI Constants and Identifiers ---
+HTML_PREFIX = "<!HTML!>"
+LOG_DISPLAY_LINKS = "links"
+LOG_DISPLAY_DOWNLOAD_PROGRESS = "download_progress"
+
+# --- Dialog Return Codes ---
+CONFIRM_ADD_ALL_ACCEPTED = 1
+CONFIRM_ADD_ALL_SKIP_ADDING = 2
+CONFIRM_ADD_ALL_CANCEL_DOWNLOAD = 3
+
+# --- File Type Extensions ---
+IMAGE_EXTENSIONS = {
+    '.jpg', '.jpeg', '.png', '.gif', '.bmp', '.tiff', '.tif', '.webp',
+    '.heic', '.heif', '.svg', '.ico', '.jfif', '.pjpeg', '.pjp', '.avif'
+}
+VIDEO_EXTENSIONS = {
+    '.mp4', '.mov', '.mkv', '.webm', '.avi', '.wmv', '.flv', '.mpeg',
+    '.mpg', '.m4v', '.3gp', '.ogv', '.ts', '.vob'
+}
+ARCHIVE_EXTENSIONS = {
+    '.zip', '.rar', '.7z', '.tar', '.gz', '.bz2'
+}
+AUDIO_EXTENSIONS = {
+    '.mp3', '.wav', '.aac', '.flac', '.ogg', '.wma', '.m4a', '.opus',
+    '.aiff', '.ape', '.mid', '.midi'
+}
+
+# --- Text Processing Constants ---
+MAX_FILENAME_COMPONENT_LENGTH = 150
+
+# Words to ignore when creating folder names from titles
+FOLDER_NAME_STOP_WORDS = {
+    "a", "alone", "am", "an", "and", "at", "be", "by", "com",
+    "for", "he", "her", "his", "i", "im", "in", "is", "it", "its",
+    "me", "my", "net", "not", "of", "on", "or", "org", "our",
+    "s", "she", "so", "the", "their", "they", "this",
+    "to", "ve", "was", "we", "were", "with", "www", "you", "your",
+ # add more according to need     
+}
+
+# Additional words to ignore specifically for creator-level downloads
+CREATOR_DOWNLOAD_DEFAULT_FOLDER_IGNORE_WORDS = {
+    "poll", "cover", "fan-art", "fanart", "requests", "request", "holiday",
+    "batch", "open", "closed", "winner", "loser", "wip",
+    "update", "news", "discussion", "question", "stream", "video", "sketchbook",
+    # Months and days
+    "jan", "january", "feb", "february", "mar", "march", "apr", "april",
+    "may", "jun", "june", "jul", "july", "aug", "august", "sep", "september",
+    "oct", "october", "nov", "november", "dec", "december",
+    "mon", "monday", "tue", "tuesday", "wed", "wednesday", "thu", "thursday",
+    "fri", "friday", "sat", "saturday", "sun", "sunday"
+    # add more according to need 
+}

src/core/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/core/api_client.py

@@ -0,0 +1,321 @@
+# --- Standard Library Imports ---
+import time
+import traceback
+from urllib.parse import urlparse
+
+# --- Third-Party Library Imports ---
+import requests
+
+# --- Local Application Imports ---
+from ..utils.network_utils import extract_post_info, prepare_cookies_for_request
+from ..config.constants import (
+    STYLE_DATE_POST_TITLE
+)
+
+
+def fetch_posts_paginated(api_url_base, headers, offset, logger, cancellation_event=None, pause_event=None, cookies_dict=None):
+    """
+    Fetches a single page of posts from the API with retry logic.
+
+    Args:
+        api_url_base (str): The base URL for the user's posts.
+        headers (dict): The request headers.
+        offset (int): The offset for pagination.
+        logger (callable): Function to log messages.
+        cancellation_event (threading.Event): Event to signal cancellation.
+        pause_event (threading.Event): Event to signal pause.
+        cookies_dict (dict): A dictionary of cookies to include in the request.
+
+    Returns:
+        list: A list of post data dictionaries from the API.
+
+    Raises:
+        RuntimeError: If the fetch fails after all retries or encounters a non-retryable error.
+    """
+    if cancellation_event and cancellation_event.is_set():
+        logger("   Fetch cancelled before request.")
+        raise RuntimeError("Fetch operation cancelled by user.")
+    if pause_event and pause_event.is_set():
+        logger("   Post fetching paused...")
+        while pause_event.is_set():
+            if cancellation_event and cancellation_event.is_set():
+                logger("   Post fetching cancelled while paused.")
+                raise RuntimeError("Fetch operation cancelled by user.")
+            time.sleep(0.5)
+        logger("   Post fetching resumed.")
+        
+    paginated_url = f'{api_url_base}?o={offset}'
+    max_retries = 3
+    retry_delay = 5
+
+    for attempt in range(max_retries):
+        if cancellation_event and cancellation_event.is_set():
+            raise RuntimeError("Fetch operation cancelled by user during retry loop.")
+
+        log_message = f"   Fetching: {paginated_url} (Page approx. {offset // 50 + 1})"
+        if attempt > 0:
+            log_message += f" (Attempt {attempt + 1}/{max_retries})"
+        logger(log_message)
+
+        try:
+            response = requests.get(paginated_url, headers=headers, timeout=(15, 90), cookies=cookies_dict)
+            response.raise_for_status()
+
+            if 'application/json' not in response.headers.get('Content-Type', '').lower():
+                logger(f"⚠️ Unexpected content type from API: {response.headers.get('Content-Type')}. Body: {response.text[:200]}")
+                return []
+
+            return response.json()
+
+        except (requests.exceptions.Timeout, requests.exceptions.ConnectionError) as e:
+            logger(f"   ⚠️ Retryable network error on page fetch (Attempt {attempt + 1}): {e}")
+            if attempt < max_retries - 1:
+                delay = retry_delay * (2 ** attempt)
+                logger(f"      Retrying in {delay} seconds...")
+                time.sleep(delay)
+                continue
+            else:
+                logger(f"   ❌ Failed to fetch page after {max_retries} attempts.")
+                raise RuntimeError(f"Timeout or connection error fetching offset {offset}")
+        except requests.exceptions.RequestException as e:
+            err_msg = f"Error fetching offset {offset}: {e}"
+            if e.response is not None:
+                err_msg += f" (Status: {e.response.status_code}, Body: {e.response.text[:200]})"
+            raise RuntimeError(err_msg)
+        except ValueError as e: # JSON decode error
+            raise RuntimeError(f"Error decoding JSON from offset {offset}: {e}. Response: {response.text[:200]}")
+
+    raise RuntimeError(f"Failed to fetch page {paginated_url} after all attempts.")
+
+
+def fetch_post_comments(api_domain, service, user_id, post_id, headers, logger, cancellation_event=None, pause_event=None, cookies_dict=None):
+    """Fetches all comments for a specific post."""
+    if cancellation_event and cancellation_event.is_set():
+        raise RuntimeError("Comment fetch operation cancelled by user.")
+
+    comments_api_url = f"https://{api_domain}/api/v1/{service}/user/{user_id}/post/{post_id}/comments"
+    logger(f"   Fetching comments: {comments_api_url}")
+    
+    try:
+        response = requests.get(comments_api_url, headers=headers, timeout=(10, 30), cookies=cookies_dict)
+        response.raise_for_status()
+        return response.json()
+    except requests.exceptions.RequestException as e:
+        raise RuntimeError(f"Error fetching comments for post {post_id}: {e}")
+    except ValueError as e:
+        raise RuntimeError(f"Error decoding JSON from comments API for post {post_id}: {e}")
+
+def download_from_api (
+api_url_input ,
+logger =print ,
+start_page =None ,
+end_page =None ,
+manga_mode =False ,
+cancellation_event =None ,
+pause_event =None ,
+use_cookie =False ,
+cookie_text ="",
+selected_cookie_file =None ,
+app_base_dir =None ,
+manga_filename_style_for_sort_check =None 
+):
+    headers ={
+    'User-Agent':'Mozilla/5.0',
+    'Accept':'application/json'
+    }
+
+    service ,user_id ,target_post_id =extract_post_info (api_url_input )
+
+    if cancellation_event and cancellation_event .is_set ():
+        logger ("   Download_from_api cancelled at start.")
+        return 
+
+    parsed_input_url_for_domain =urlparse (api_url_input )
+    api_domain =parsed_input_url_for_domain .netloc 
+    if not any (d in api_domain .lower ()for d in ['kemono.su','kemono.party','coomer.su','coomer.party']):
+        logger (f"⚠️ Unrecognized domain '{api_domain }' from input URL. Defaulting to kemono.su for API calls.")
+        api_domain ="kemono.su"
+    cookies_for_api =None 
+    if use_cookie and app_base_dir :
+        cookies_for_api =prepare_cookies_for_request (use_cookie ,cookie_text ,selected_cookie_file ,app_base_dir ,logger ,target_domain =api_domain )
+    if target_post_id :
+        direct_post_api_url =f"https://{api_domain }/api/v1/{service }/user/{user_id }/post/{target_post_id }"
+        logger (f"   Attempting direct fetch for target post: {direct_post_api_url }")
+        try :
+            direct_response =requests .get (direct_post_api_url ,headers =headers ,timeout =(10 ,30 ),cookies =cookies_for_api )
+            direct_response .raise_for_status ()
+            direct_post_data =direct_response .json ()
+            if isinstance (direct_post_data ,list )and direct_post_data :
+                direct_post_data =direct_post_data [0 ]
+            if isinstance (direct_post_data ,dict )and 'post'in direct_post_data and isinstance (direct_post_data ['post'],dict ):
+                 direct_post_data =direct_post_data ['post']
+            if isinstance (direct_post_data ,dict )and direct_post_data .get ('id')==target_post_id :
+                logger (f"   ✅ Direct fetch successful for post {target_post_id }.")
+                yield [direct_post_data ]
+                return 
+            else :
+                response_type =type (direct_post_data ).__name__ 
+                response_snippet =str (direct_post_data )[:200 ]
+                logger (f"   ⚠️ Direct fetch for post {target_post_id } returned unexpected data (Type: {response_type }, Snippet: '{response_snippet }'). Falling back to pagination.")
+        except requests .exceptions .RequestException as e :
+            logger (f"   ⚠️ Direct fetch failed for post {target_post_id }: {e }. Falling back to pagination.")
+        except Exception as e :
+            logger (f"   ⚠️ Unexpected error during direct fetch for post {target_post_id }: {e }. Falling back to pagination.")
+    if not service or not user_id :
+        logger (f"❌ Invalid URL or could not extract service/user: {api_url_input }")
+        return 
+    if target_post_id and (start_page or end_page ):
+        logger ("⚠️ Page range (start/end page) is ignored when a specific post URL is provided (searching all pages for the post).")
+
+    is_manga_mode_fetch_all_and_sort_oldest_first =manga_mode and (manga_filename_style_for_sort_check !=STYLE_DATE_POST_TITLE )and not target_post_id 
+    api_base_url =f"https://{api_domain }/api/v1/{service }/user/{user_id }"
+    page_size =50 
+    if is_manga_mode_fetch_all_and_sort_oldest_first :
+        logger (f"   Manga Mode (Style: {manga_filename_style_for_sort_check if manga_filename_style_for_sort_check else 'Default'} - Oldest First Sort Active): Fetching all posts to sort by date...")
+        all_posts_for_manga_mode =[]
+        current_offset_manga =0 
+        if start_page and start_page >1 :
+            current_offset_manga =(start_page -1 )*page_size 
+            logger (f"   Manga Mode: Starting fetch from page {start_page } (offset {current_offset_manga }).")
+        elif start_page :
+            logger (f"   Manga Mode: Starting fetch from page 1 (offset 0).")
+        if end_page :
+            logger (f"   Manga Mode: Will fetch up to page {end_page }.")
+        while True :
+            if pause_event and pause_event .is_set ():
+                logger ("   Manga mode post fetching paused...")
+                while pause_event .is_set ():
+                    if cancellation_event and cancellation_event .is_set ():
+                        logger ("   Manga mode post fetching cancelled while paused.")
+                        break 
+                    time .sleep (0.5 )
+                if not (cancellation_event and cancellation_event .is_set ()):logger ("   Manga mode post fetching resumed.")
+            if cancellation_event and cancellation_event .is_set ():
+                logger ("   Manga mode post fetching cancelled.")
+                break 
+            current_page_num_manga =(current_offset_manga //page_size )+1 
+            if end_page and current_page_num_manga >end_page :
+                logger (f"   Manga Mode: Reached specified end page ({end_page }). Stopping post fetch.")
+                break 
+            try :
+                posts_batch_manga =fetch_posts_paginated (api_base_url ,headers ,current_offset_manga ,logger ,cancellation_event ,pause_event ,cookies_dict =cookies_for_api )
+                if not isinstance (posts_batch_manga ,list ):
+                    logger (f"❌ API Error (Manga Mode): Expected list of posts, got {type (posts_batch_manga )}.")
+                    break 
+                if not posts_batch_manga :
+                    logger ("✅ Reached end of posts (Manga Mode fetch all).")
+                    if start_page and not end_page and current_page_num_manga <start_page :
+                        logger (f"   Manga Mode: No posts found on or after specified start page {start_page }.")
+                    elif end_page and current_page_num_manga <=end_page and not all_posts_for_manga_mode :
+                        logger (f"   Manga Mode: No posts found within the specified page range ({start_page or 1 }-{end_page }).")
+                    break 
+                all_posts_for_manga_mode .extend (posts_batch_manga )
+                current_offset_manga +=page_size 
+                time .sleep (0.6 )
+            except RuntimeError as e :
+                if "cancelled by user"in str (e ).lower ():
+                    logger (f"ℹ️ Manga mode pagination stopped due to cancellation: {e }")
+                else :
+                    logger (f"❌ {e }\n   Aborting manga mode pagination.")
+                break 
+            except Exception as e :
+                logger (f"❌ Unexpected error during manga mode fetch: {e }")
+                traceback .print_exc ()
+                break 
+        if cancellation_event and cancellation_event .is_set ():return 
+        if all_posts_for_manga_mode :
+            logger (f"   Manga Mode: Fetched {len (all_posts_for_manga_mode )} total posts. Sorting by publication date (oldest first)...")
+            def sort_key_tuple (post ):
+                published_date_str =post .get ('published')
+                added_date_str =post .get ('added')
+                post_id_str =post .get ('id',"0")
+                primary_sort_val ="0000-00-00T00:00:00"
+                if published_date_str :
+                    primary_sort_val =published_date_str 
+                elif added_date_str :
+                    logger (f"    ⚠️ Post ID {post_id_str } missing 'published' date, using 'added' date '{added_date_str }' for primary sorting.")
+                    primary_sort_val =added_date_str 
+                else :
+                    logger (f"    ⚠️ Post ID {post_id_str } missing both 'published' and 'added' dates. Placing at start of sort (using default earliest date).")
+                secondary_sort_val =0 
+                try :
+                    secondary_sort_val =int (post_id_str )
+                except ValueError :
+                    logger (f"    ⚠️ Post ID '{post_id_str }' is not a valid integer for secondary sorting, using 0.")
+                return (primary_sort_val ,secondary_sort_val )
+            all_posts_for_manga_mode .sort (key =sort_key_tuple )
+            for i in range (0 ,len (all_posts_for_manga_mode ),page_size ):
+                if cancellation_event and cancellation_event .is_set ():
+                    logger ("   Manga mode post yielding cancelled.")
+                    break 
+                yield all_posts_for_manga_mode [i :i +page_size ]
+        return 
+
+
+
+    if manga_mode and not target_post_id and (manga_filename_style_for_sort_check ==STYLE_DATE_POST_TITLE ):
+        logger (f"   Manga Mode (Style: {STYLE_DATE_POST_TITLE }): Processing posts in default API order (newest first).")
+
+    current_page_num =1 
+    current_offset =0 
+    processed_target_post_flag =False 
+    if start_page and start_page >1 and not target_post_id :
+        current_offset =(start_page -1 )*page_size 
+        current_page_num =start_page 
+        logger (f"   Starting from page {current_page_num } (calculated offset {current_offset }).")
+    while True :
+        if pause_event and pause_event .is_set ():
+            logger ("   Post fetching loop paused...")
+            while pause_event .is_set ():
+                if cancellation_event and cancellation_event .is_set ():
+                    logger ("   Post fetching loop cancelled while paused.")
+                    break 
+                time .sleep (0.5 )
+            if not (cancellation_event and cancellation_event .is_set ()):logger ("   Post fetching loop resumed.")
+        if cancellation_event and cancellation_event .is_set ():
+            logger ("   Post fetching loop cancelled.")
+            break 
+        if target_post_id and processed_target_post_flag :
+            break 
+        if not target_post_id and end_page and current_page_num >end_page :
+            logger (f"✅ Reached specified end page ({end_page }) for creator feed. Stopping.")
+            break 
+        try :
+            posts_batch =fetch_posts_paginated (api_base_url ,headers ,current_offset ,logger ,cancellation_event ,pause_event ,cookies_dict =cookies_for_api )
+            if not isinstance (posts_batch ,list ):
+                logger (f"❌ API Error: Expected list of posts, got {type (posts_batch )} at page {current_page_num } (offset {current_offset }).")
+                break 
+        except RuntimeError as e :
+            if "cancelled by user"in str (e ).lower ():
+                 logger (f"ℹ️ Pagination stopped due to cancellation: {e }")
+            else :
+                logger (f"❌ {e }\n   Aborting pagination at page {current_page_num } (offset {current_offset }).")
+            break 
+        except Exception as e :
+            logger (f"❌ Unexpected error fetching page {current_page_num } (offset {current_offset }): {e }")
+            traceback .print_exc ()
+            break 
+        if not posts_batch :
+            if target_post_id and not processed_target_post_flag :
+                logger (f"❌ Target post {target_post_id } not found after checking all available pages (API returned no more posts at offset {current_offset }).")
+            elif not target_post_id :
+                if current_page_num ==(start_page or 1 ):
+                     logger (f"😕 No posts found on the first page checked (page {current_page_num }, offset {current_offset }).")
+                else :
+                     logger (f"✅ Reached end of posts (no more content from API at offset {current_offset }).")
+            break 
+        if target_post_id and not processed_target_post_flag :
+            matching_post =next ((p for p in posts_batch if str (p .get ('id'))==str (target_post_id )),None )
+            if matching_post :
+                logger (f"🎯 Found target post {target_post_id } on page {current_page_num } (offset {current_offset }).")
+                yield [matching_post ]
+                processed_target_post_flag =True 
+        elif not target_post_id :
+            yield posts_batch 
+        if processed_target_post_flag :
+            break 
+        current_offset +=page_size 
+        current_page_num +=1 
+        time .sleep (0.6 )
+    if target_post_id and not processed_target_post_flag and not (cancellation_event and cancellation_event .is_set ()):
+        logger (f"❌ Target post {target_post_id } could not be found after checking all relevant pages (final check after loop).")

src/core/manager.py

@@ -0,0 +1,241 @@
+# --- Standard Library Imports ---
+import threading
+import time
+import os
+import json
+import traceback
+from concurrent.futures import ThreadPoolExecutor, as_completed, Future
+
+# --- Local Application Imports ---
+# These imports reflect the new, organized project structure.
+from .api_client import download_from_api
+from .workers import PostProcessorWorker, DownloadThread
+from ..config.constants import (
+    STYLE_DATE_BASED, STYLE_POST_TITLE_GLOBAL_NUMBERING,
+    MAX_THREADS, POST_WORKER_BATCH_THRESHOLD, POST_WORKER_NUM_BATCHES,
+    POST_WORKER_BATCH_DELAY_SECONDS
+)
+from ..utils.file_utils import clean_folder_name
+
+
+class DownloadManager:
+    """
+    Manages the entire download lifecycle, acting as a bridge between the UI
+    and the backend workers. It handles thread pools, task submission,
+    and state management for a download session.
+    """
+
+    def __init__(self, progress_queue):
+        """
+        Initializes the DownloadManager.
+
+        Args:
+            progress_queue (queue.Queue): A thread-safe queue for sending
+                                          status updates to the UI.
+        """
+        self.progress_queue = progress_queue
+        self.thread_pool = None
+        self.active_futures = []
+
+        # --- Session State ---
+        self.cancellation_event = threading.Event()
+        self.pause_event = threading.Event()
+        self.is_running = False
+        
+        self.total_posts = 0
+        self.processed_posts = 0
+        self.total_downloads = 0
+        self.total_skips = 0
+        self.all_kept_original_filenames = []
+
+    def _log(self, message):
+        """Puts a progress message into the queue for the UI."""
+        self.progress_queue.put({'type': 'progress', 'payload': (message,)})
+
+    def start_session(self, config, restore_data=None):
+        """
+        Starts a new download session based on the provided configuration.
+        This is the main entry point called by the UI.
+
+        Args:
+            config (dict): A dictionary containing all settings from the UI.
+            restore_data (dict, optional): Data from a previous, interrupted session.
+        """
+        if self.is_running:
+            self._log("❌ Cannot start a new session: A session is already in progress.")
+            return
+
+        # --- Reset state for the new session ---
+        self.is_running = True
+        self.cancellation_event.clear()
+        self.pause_event.clear()
+        self.active_futures.clear()
+        self.total_posts = 0
+        self.processed_posts = 0
+        self.total_downloads = 0
+        self.total_skips = 0
+        self.all_kept_original_filenames = []
+
+        # --- Decide execution strategy (multi-threaded vs. single-threaded) ---
+        is_single_post = bool(config.get('target_post_id_from_initial_url'))
+        use_multithreading = config.get('use_multithreading', True)
+        is_manga_sequential = config.get('manga_mode_active') and config.get('manga_filename_style') in [STYLE_DATE_BASED, STYLE_POST_TITLE_GLOBAL_NUMBERING]
+
+        should_use_multithreading_for_posts = use_multithreading and not is_single_post and not is_manga_sequential
+
+        if should_use_multithreading_for_posts:
+            # Start a separate thread to manage fetching and queuing to the thread pool
+            fetcher_thread = threading.Thread(
+                target=self._fetch_and_queue_posts_for_pool,
+                args=(config, restore_data),
+                daemon=True
+            )
+            fetcher_thread.start()
+        else:
+            # For single posts or sequential manga mode, use a single worker thread
+            # which is simpler and ensures order.
+            self._start_single_threaded_session(config)
+
+    def _start_single_threaded_session(self, config):
+        """Handles downloads that are best processed by a single worker thread."""
+        self._log("ℹ️ Initializing single-threaded download process...")
+        
+        # The original DownloadThread is now a pure Python thread, not a QThread.
+        # We run its `run` method in a standard Python thread.
+        self.worker_thread = threading.Thread(
+            target=self._run_single_worker,
+            args=(config,),
+            daemon=True
+        )
+        self.worker_thread.start()
+
+    def _run_single_worker(self, config):
+        """Target function for the single-worker thread."""
+        try:
+            # Pass the queue directly to the worker for it to send updates
+            worker = DownloadThread(config, self.progress_queue)
+            worker.run() # This is the main blocking call for this thread
+        except Exception as e:
+            self._log(f"❌ CRITICAL ERROR in single-worker thread: {e}")
+            self._log(traceback.format_exc())
+        finally:
+            self.is_running = False
+
+    def _fetch_and_queue_posts_for_pool(self, config, restore_data):
+        """
+        Fetches all posts from the API and submits them as tasks to a thread pool.
+        This method runs in its own dedicated thread to avoid blocking.
+        """
+        try:
+            num_workers = min(config.get('num_threads', 4), MAX_THREADS)
+            self.thread_pool = ThreadPoolExecutor(max_workers=num_workers, thread_name_prefix='PostWorker_')
+            
+            # Fetch posts
+            # In a real implementation, this would call `api_client.download_from_api`
+            if restore_data:
+                all_posts = restore_data['all_posts_data']
+                processed_ids = set(restore_data['processed_post_ids'])
+                posts_to_process = [p for p in all_posts if p.get('id') not in processed_ids]
+                self.total_posts = len(all_posts)
+                self.processed_posts = len(processed_ids)
+                self._log(f"🔄 Restoring session. {len(posts_to_process)} posts remaining.")
+            else:
+                posts_to_process = self._get_all_posts(config)
+                self.total_posts = len(posts_to_process)
+                self.processed_posts = 0
+
+            self.progress_queue.put({'type': 'overall_progress', 'payload': (self.total_posts, self.processed_posts)})
+            
+            if not posts_to_process:
+                self._log("✅ No new posts to process.")
+                return
+
+            # Submit tasks to the pool
+            for post_data in posts_to_process:
+                if self.cancellation_event.is_set():
+                    break
+                # Each PostProcessorWorker gets the queue to send its own updates
+                worker = PostProcessorWorker(post_data, config, self.progress_queue)
+                future = self.thread_pool.submit(worker.process)
+                future.add_done_callback(self._handle_future_result)
+                self.active_futures.append(future)
+        
+        except Exception as e:
+            self._log(f"❌ CRITICAL ERROR in post fetcher thread: {e}")
+            self._log(traceback.format_exc())
+        finally:
+            # Wait for all submitted tasks to complete before shutting down
+            if self.thread_pool:
+                self.thread_pool.shutdown(wait=True)
+            self.is_running = False
+            self._log("🏁 All processing tasks have completed.")
+            # Emit final signal
+            self.progress_queue.put({
+                'type': 'finished',
+                'payload': (self.total_downloads, self.total_skips, self.cancellation_event.is_set(), self.all_kept_original_filenames)
+            })
+
+    def _get_all_posts(self, config):
+        """Helper to fetch all posts using the API client."""
+        all_posts = []
+        # This generator yields batches of posts
+        post_generator = download_from_api(
+            api_url_input=config['api_url'],
+            logger=self._log,
+            # ... pass other relevant config keys ...
+            cancellation_event=self.cancellation_event,
+            pause_event=self.pause_event
+        )
+        for batch in post_generator:
+            all_posts.extend(batch)
+        return all_posts
+
+    def _handle_future_result(self, future: Future):
+        """Callback executed when a worker task completes."""
+        if self.cancellation_event.is_set():
+            return
+            
+        with threading.Lock(): # Protect shared counters
+            self.processed_posts += 1
+            try:
+                if future.cancelled():
+                    self._log("⚠️ A post processing task was cancelled.")
+                    self.total_skips += 1
+                else:
+                    result = future.result()
+                    # Unpack result tuple from the worker
+                    (dl_count, skip_count, kept_originals, 
+                     retryable, permanent, history) = result
+                    self.total_downloads += dl_count
+                    self.total_skips += skip_count
+                    self.all_kept_original_filenames.extend(kept_originals)
+                    
+                    # Queue up results for UI to handle
+                    if retryable:
+                        self.progress_queue.put({'type': 'retryable_failure', 'payload': (retryable,)})
+                    if permanent:
+                        self.progress_queue.put({'type': 'permanent_failure', 'payload': (permanent,)})
+                    if history:
+                        self.progress_queue.put({'type': 'post_processed_history', 'payload': (history,)})
+
+            except Exception as e:
+                self._log(f"❌ Worker task resulted in an exception: {e}")
+                self.total_skips += 1 # Count errored posts as skipped
+
+            # Update overall progress
+            self.progress_queue.put({'type': 'overall_progress', 'payload': (self.total_posts, self.processed_posts)})
+
+    def cancel_session(self):
+        """Cancels the current running session."""
+        if not self.is_running:
+            return
+        self._log("⚠️ Cancellation requested by user...")
+        self.cancellation_event.set()
+        
+        # For single thread mode, the worker checks the event
+        # For multi-thread mode, shut down the pool
+        if self.thread_pool:
+            # Don't wait, just cancel pending futures and let the fetcher thread exit
+            self.thread_pool.shutdown(wait=False, cancel_futures=True)
+            
+        self.is_running = False

src/i18n/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/services/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/services/drive_downloader.py

@@ -0,0 +1,163 @@
+# --- Standard Library Imports ---
+import os
+import re
+import traceback
+import json
+from urllib.parse import urlparse, urlunparse, parse_qs, urlencode
+
+# --- Third-Party Library Imports ---
+import requests
+try:
+    from mega import Mega
+    MEGA_AVAILABLE = True
+except ImportError:
+    MEGA_AVAILABLE = False
+
+try:
+    import gdown
+    GDOWN_AVAILABLE = True
+except ImportError:
+    GDOWN_AVAILABLE = False
+
+# --- Helper Functions ---
+
+def _get_filename_from_headers(headers):
+    """
+    Extracts a filename from the Content-Disposition header.
+
+    Args:
+        headers (dict): A dictionary of HTTP response headers.
+
+    Returns:
+        str or None: The extracted filename, or None if not found.
+    """
+    cd = headers.get('content-disposition')
+    if not cd:
+        return None
+    
+    fname_match = re.findall('filename="?([^"]+)"?', cd)
+    if fname_match:
+        # Sanitize the filename to prevent directory traversal issues
+        # and remove invalid characters for most filesystems.
+        sanitized_name = re.sub(r'[<>:"/\\|?*]', '_', fname_match[0].strip())
+        return sanitized_name
+        
+    return None
+
+# --- Main Service Downloader Functions ---
+
+def download_mega_file(mega_link, download_path=".", logger_func=print):
+    """
+    Downloads a file from a public Mega.nz link.
+
+    Args:
+        mega_link (str): The public Mega.nz link to the file.
+        download_path (str): The directory to save the downloaded file.
+        logger_func (callable): Function to use for logging.
+    """
+    if not MEGA_AVAILABLE:
+        logger_func("❌ Error: mega.py library is not installed. Cannot download from Mega.")
+        logger_func("   Please install it: pip install mega.py")
+        raise ImportError("mega.py library not found.")
+
+    logger_func(f"   [Mega] Initializing Mega client...")
+    try:
+        mega_client = Mega()
+        m = mega_client.login()
+        logger_func(f"   [Mega] Attempting to download from: {mega_link}")
+        
+        if not os.path.exists(download_path):
+            os.makedirs(download_path, exist_ok=True)
+            logger_func(f"   [Mega] Created download directory: {download_path}")
+            
+        # The download_url method handles file info fetching and saving internally.
+        downloaded_file_path = m.download_url(mega_link, dest_path=download_path)
+
+        if downloaded_file_path and os.path.exists(downloaded_file_path):
+            logger_func(f"   [Mega] ✅ File downloaded successfully! Saved as: {downloaded_file_path}")
+        else:
+            raise Exception(f"Mega download failed or file not found. Returned: {downloaded_file_path}")
+
+    except Exception as e:
+        logger_func(f"   [Mega] ❌ An unexpected error occurred during Mega download: {e}")
+        traceback.print_exc(limit=2)
+        raise  # Re-raise the exception to be handled by the calling worker
+
+def download_gdrive_file(gdrive_link, download_path=".", logger_func=print):
+    """
+    Downloads a file from a public Google Drive link using the gdown library.
+
+    Args:
+        gdrive_link (str): The public Google Drive link to the file.
+        download_path (str): The directory to save the downloaded file.
+        logger_func (callable): Function to use for logging.
+    """
+    if not GDOWN_AVAILABLE:
+        logger_func("❌ Error: gdown library is not installed. Cannot download from Google Drive.")
+        logger_func("   Please install it: pip install gdown")
+        raise ImportError("gdown library not found.")
+
+    logger_func(f"   [GDrive] Attempting to download: {gdrive_link}")
+    try:
+        if not os.path.exists(download_path):
+            os.makedirs(download_path, exist_ok=True)
+            logger_func(f"   [GDrive] Created download directory: {download_path}")
+
+        # gdown handles finding the file ID and downloading. 'fuzzy=True' helps with various URL formats.
+        output_file_path = gdown.download(gdrive_link, output=download_path, quiet=False, fuzzy=True)
+
+        if output_file_path and os.path.exists(output_file_path):
+            logger_func(f"   [GDrive] ✅ Google Drive file downloaded successfully: {output_file_path}")
+        else:
+            raise Exception(f"gdown download failed or file not found. Returned: {output_file_path}")
+
+    except Exception as e:
+        logger_func(f"   [GDrive] ❌ An error occurred during Google Drive download: {e}")
+        traceback.print_exc(limit=2)
+        raise
+
+def download_dropbox_file(dropbox_link, download_path=".", logger_func=print):
+    """
+    Downloads a file from a public Dropbox link by modifying the URL for direct download.
+
+    Args:
+        dropbox_link (str): The public Dropbox link to the file.
+        download_path (str): The directory to save the downloaded file.
+        logger_func (callable): Function to use for logging.
+    """
+    logger_func(f"   [Dropbox] Attempting to download: {dropbox_link}")
+    
+    # Modify the Dropbox URL to force a direct download instead of showing the preview page.
+    parsed_url = urlparse(dropbox_link)
+    query_params = parse_qs(parsed_url.query)
+    query_params['dl'] = ['1']
+    new_query = urlencode(query_params, doseq=True)
+    direct_download_url = urlunparse(parsed_url._replace(query=new_query))
+
+    logger_func(f"   [Dropbox] Using direct download URL: {direct_download_url}")
+
+    try:
+        if not os.path.exists(download_path):
+            os.makedirs(download_path, exist_ok=True)
+            logger_func(f"   [Dropbox] Created download directory: {download_path}")
+
+        with requests.get(direct_download_url, stream=True, allow_redirects=True, timeout=(10, 300)) as r:
+            r.raise_for_status()
+            
+            # Determine filename from headers or URL
+            filename = _get_filename_from_headers(r.headers) or os.path.basename(parsed_url.path) or "dropbox_file"
+            full_save_path = os.path.join(download_path, filename)
+            
+            logger_func(f"   [Dropbox] Starting download of '{filename}'...")
+            
+            # Write file to disk in chunks
+            with open(full_save_path, 'wb') as f:
+                for chunk in r.iter_content(chunk_size=8192):
+                    f.write(chunk)
+                    
+            logger_func(f"   [Dropbox] ✅ Dropbox file downloaded successfully: {full_save_path}")
+
+    except Exception as e:
+        logger_func(f"   [Dropbox] ❌ An error occurred during Dropbox download: {e}")
+        traceback.print_exc(limit=2)
+        raise

src/services/multipart_downloader.py

@@ -1,153 +1,147 @@
+# --- Standard Library Imports ---
 import os
 import time
-import requests
 import hashlib
 import http.client
 import traceback
 import threading
+import queue
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
-CHUNK_DOWNLOAD_RETRY_DELAY = 2 # Slightly reduced for faster retries if needed
-MAX_CHUNK_DOWNLOAD_RETRIES = 1 # Further reduced for quicker fallback if a chunk is problematic
-DOWNLOAD_CHUNK_SIZE_ITER = 1024 * 256  # 256KB for iter_content within a chunk download
+# --- Third-Party Library Imports ---
+import requests
+
+# --- Module Constants ---
+CHUNK_DOWNLOAD_RETRY_DELAY = 2
+MAX_CHUNK_DOWNLOAD_RETRIES = 1
+DOWNLOAD_CHUNK_SIZE_ITER = 1024 * 256  # 256 KB per iteration chunk
+
+# Flag to indicate if this module and its dependencies are available.
+# This was missing and caused the ImportError.
+MULTIPART_DOWNLOADER_AVAILABLE = True
 
 
-def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte, headers,
-                               part_num, total_parts, progress_data, cancellation_event, skip_event,
-                               logger_func, emitter=None, api_original_filename=None): # Renamed logger, signals to emitter
-    """Downloads a single chunk of a file and writes it to the temp file."""
+def _download_individual_chunk(
+    chunk_url, temp_file_path, start_byte, end_byte, headers,
+    part_num, total_parts, progress_data, cancellation_event,
+    skip_event, pause_event, global_emit_time_ref, cookies_for_chunk,
+    logger_func, emitter=None, api_original_filename=None
+):
+    """
+    Downloads a single segment (chunk) of a larger file. This function is
+    intended to be run in a separate thread by a ThreadPoolExecutor.
+
+    It handles retries, pauses, and cancellations for its specific chunk.
+    """
+    # --- Pre-download checks for control events ---
     if cancellation_event and cancellation_event.is_set():
         logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download cancelled before start.")
-        return 0, False  # bytes_downloaded, success
+        return 0, False
     if skip_event and skip_event.is_set():
         logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event triggered before start.")
         return 0, False
+    if pause_event and pause_event.is_set():
+        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download paused before start...")
+        while pause_event.is_set():
+            if cancellation_event and cancellation_event.is_set():
+                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download cancelled while paused.")
+                return 0, False
+            time.sleep(0.2)
+        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download resumed.")
 
+    # Prepare headers for the specific byte range of this chunk
     chunk_headers = headers.copy()
-    # end_byte can be -1 for 0-byte files, meaning download from start_byte to end of file (which is start_byte itself)
-    if end_byte != -1 : # For 0-byte files, end_byte might be -1, Range header should not be set or be 0-0
+    if end_byte != -1:
         chunk_headers['Range'] = f"bytes={start_byte}-{end_byte}"
-    elif start_byte == 0 and end_byte == -1: # Specifically for 0-byte files
-        # Some servers might not like Range: bytes=0--1.
-        # For a 0-byte file, we might not even need a range header, or Range: bytes=0-0
-        # Let's try without for 0-byte, or rely on server to handle 0-0 if Content-Length was 0.
-        # If Content-Length was 0, the main function might handle it directly.
-        # This chunking logic is primarily for files > 0 bytes.
-        # For now, if end_byte is -1, it implies a 0-byte file, so we expect 0 bytes.
-        pass
-
-
+    
     bytes_this_chunk = 0
-    last_progress_emit_time_for_chunk = time.time()
     last_speed_calc_time = time.time()
     bytes_at_last_speed_calc = 0
 
+    # --- Retry Loop ---
     for attempt in range(MAX_CHUNK_DOWNLOAD_RETRIES + 1):
         if cancellation_event and cancellation_event.is_set():
-            logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Cancelled during retry loop.")
-            return bytes_this_chunk, False
-        if skip_event and skip_event.is_set():
-            logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event during retry loop.")
             return bytes_this_chunk, False
 
         try:
             if attempt > 0:
-                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Retrying download (Attempt {attempt}/{MAX_CHUNK_DOWNLOAD_RETRIES})...")
+                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Retrying (Attempt {attempt + 1}/{MAX_CHUNK_DOWNLOAD_RETRIES + 1})...")
                 time.sleep(CHUNK_DOWNLOAD_RETRY_DELAY * (2 ** (attempt - 1)))
-                # Reset speed calculation on retry
                 last_speed_calc_time = time.time()
-                bytes_at_last_speed_calc = bytes_this_chunk # Current progress of this chunk
+                bytes_at_last_speed_calc = bytes_this_chunk
+
+            logger_func(f"   🚀 [Chunk {part_num + 1}/{total_parts}] Starting download: bytes {start_byte}-{end_byte if end_byte != -1 else 'EOF'}")
             
-            # Enhanced log message for chunk start
-            log_msg = f"   🚀 [Chunk {part_num + 1}/{total_parts}] Starting download: bytes {start_byte}-{end_byte if end_byte != -1 else 'EOF'}"
-            logger_func(log_msg)
-            print(f"DEBUG_MULTIPART: {log_msg}") # Direct console print for debugging
-            response = requests.get(chunk_url, headers=chunk_headers, timeout=(10, 120), stream=True)
+            response = requests.get(chunk_url, headers=chunk_headers, timeout=(10, 120), stream=True, cookies=cookies_for_chunk)
             response.raise_for_status()
 
-            # For 0-byte files, if end_byte was -1, we expect 0 content.
-            if start_byte == 0 and end_byte == -1 and int(response.headers.get('Content-Length', 0)) == 0:
-                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Confirmed 0-byte file.")
-                with progress_data['lock']:
-                    progress_data['chunks_status'][part_num]['active'] = False
-                    progress_data['chunks_status'][part_num]['speed_bps'] = 0
-                return 0, True
-
-            with open(temp_file_path, 'r+b') as f:  # Open in read-write binary
+            # --- Data Writing Loop ---
+            with open(temp_file_path, 'r+b') as f:
                 f.seek(start_byte)
                 for data_segment in response.iter_content(chunk_size=DOWNLOAD_CHUNK_SIZE_ITER):
                     if cancellation_event and cancellation_event.is_set():
-                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Cancelled during data iteration.")
-                        return bytes_this_chunk, False
-                    if skip_event and skip_event.is_set():
-                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event during data iteration.")
                         return bytes_this_chunk, False
+                    if pause_event and pause_event.is_set():
+                        # Handle pausing during the download stream
+                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Paused...")
+                        while pause_event.is_set():
+                            if cancellation_event and cancellation_event.is_set(): return bytes_this_chunk, False
+                            time.sleep(0.2)
+                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Resumed.")
+
                     if data_segment:
                         f.write(data_segment)
                         bytes_this_chunk += len(data_segment)
                         
+                        # Update shared progress data structure
                         with progress_data['lock']:
-                            # Increment both the chunk's downloaded and the overall downloaded
                             progress_data['total_downloaded_so_far'] += len(data_segment)
                             progress_data['chunks_status'][part_num]['downloaded'] = bytes_this_chunk
-                            progress_data['chunks_status'][part_num]['active'] = True
-
+                            
+                            # Calculate and update speed for this chunk
                             current_time = time.time()
-                            time_delta_speed = current_time - last_speed_calc_time
-                            if time_delta_speed > 0.5: # Calculate speed every 0.5 seconds
+                            time_delta = current_time - last_speed_calc_time
+                            if time_delta > 0.5:
                                 bytes_delta = bytes_this_chunk - bytes_at_last_speed_calc
-                                current_speed_bps = (bytes_delta * 8) / time_delta_speed if time_delta_speed > 0 else 0
+                                current_speed_bps = (bytes_delta * 8) / time_delta if time_delta > 0 else 0
                                 progress_data['chunks_status'][part_num]['speed_bps'] = current_speed_bps
                                 last_speed_calc_time = current_time
                                 bytes_at_last_speed_calc = bytes_this_chunk
-
-                            # Emit progress more frequently from within the chunk download
-                            if current_time - last_progress_emit_time_for_chunk > 0.1: # Emit up to 10 times/sec per chunk
-                                if emitter:
-                                    # Ensure we read the latest total downloaded from progress_data
-                                    # Send a copy of the chunks_status list
-                                    status_list_copy = [dict(s) for s in progress_data['chunks_status']] # Make a deep enough copy
-                                    if isinstance(emitter, queue.Queue):
-                                        emitter.put({'type': 'file_progress', 'payload': (api_original_filename, status_list_copy)})
-                                    elif hasattr(emitter, 'file_progress_signal'): # PostProcessorSignals-like
-                                        emitter.file_progress_signal.emit(api_original_filename, status_list_copy)
-                                last_progress_emit_time_for_chunk = current_time
+                            
+                            # Emit progress signal to the UI via the queue
+                            if emitter and (current_time - global_emit_time_ref[0] > 0.25):
+                                global_emit_time_ref[0] = current_time
+                                status_list_copy = [dict(s) for s in progress_data['chunks_status']]
+                                if isinstance(emitter, queue.Queue):
+                                    emitter.put({'type': 'file_progress', 'payload': (api_original_filename, status_list_copy)})
+                                elif hasattr(emitter, 'file_progress_signal'):
+                                    emitter.file_progress_signal.emit(api_original_filename, status_list_copy)
+            
+            # If we reach here, the download for this chunk was successful
             return bytes_this_chunk, True
 
         except (requests.exceptions.ConnectionError, requests.exceptions.Timeout, http.client.IncompleteRead) as e:
             logger_func(f"   ❌ [Chunk {part_num + 1}/{total_parts}] Retryable error: {e}")
-            if attempt == MAX_CHUNK_DOWNLOAD_RETRIES:
-                logger_func(f"   ❌ [Chunk {part_num + 1}/{total_parts}] Failed after {MAX_CHUNK_DOWNLOAD_RETRIES} retries.")
-                return bytes_this_chunk, False
-        except requests.exceptions.RequestException as e: # Includes 4xx/5xx errors after raise_for_status
+        except requests.exceptions.RequestException as e:
             logger_func(f"   ❌ [Chunk {part_num + 1}/{total_parts}] Non-retryable error: {e}")
-            return bytes_this_chunk, False
+            return bytes_this_chunk, False # Break loop on non-retryable errors
         except Exception as e:
             logger_func(f"   ❌ [Chunk {part_num + 1}/{total_parts}] Unexpected error: {e}\n{traceback.format_exc(limit=1)}")
             return bytes_this_chunk, False
 
-    # Ensure final status is marked as inactive if loop finishes due to retries
-    with progress_data['lock']:
-        progress_data['chunks_status'][part_num]['active'] = False
-        progress_data['chunks_status'][part_num]['speed_bps'] = 0
-    return bytes_this_chunk, False # Should be unreachable
+    return bytes_this_chunk, False
 
 
 def download_file_in_parts(file_url, save_path, total_size, num_parts, headers, api_original_filename,
-                           emitter_for_multipart, cancellation_event, skip_event, logger_func): # Renamed signals, logger
-    """
-    Downloads a file in multiple parts concurrently.
-    Returns: (download_successful_flag, downloaded_bytes, calculated_file_hash, temp_file_handle_or_None)
-    The temp_file_handle will be an open read-binary file handle to the .part file if successful, otherwise None.
-    It is the responsibility of the caller to close this handle and rename/delete the .part file.
-    """
+                           emitter_for_multipart, cookies_for_chunk_session,
+                           cancellation_event, skip_event, logger_func, pause_event):
     logger_func(f"⬇️ Initializing Multi-part Download ({num_parts} parts) for: '{api_original_filename}' (Size: {total_size / (1024*1024):.2f} MB)")
     temp_file_path = save_path + ".part"
 
     try:
         with open(temp_file_path, 'wb') as f_temp:
             if total_size > 0:
-                f_temp.truncate(total_size) # Pre-allocate space
+                f_temp.truncate(total_size)
     except IOError as e:
         logger_func(f"   ❌ Error creating/truncating temp file '{temp_file_path}': {e}")
         return False, 0, None, None
@@ -157,14 +151,14 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
     for i in range(num_parts):
         start = i * chunk_size_calc
         end = start + chunk_size_calc - 1 if i < num_parts - 1 else total_size - 1
-        if start <= end: # Valid range
+        if start <= end:
             chunks_ranges.append((start, end))
-        elif total_size == 0 and i == 0: # Special case for 0-byte file
-            chunks_ranges.append((0, -1)) # Indicates 0-byte file, download 0 bytes from offset 0
+        elif total_size == 0 and i == 0:
+            chunks_ranges.append((0, -1))
 
-    chunk_actual_sizes = [] 
+    chunk_actual_sizes = []
     for start, end in chunks_ranges:
-        if end == -1 and start == 0: # 0-byte file
+        if end == -1 and start == 0:
             chunk_actual_sizes.append(0)
         else:
             chunk_actual_sizes.append(end - start + 1)
@@ -175,18 +169,19 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
         return False, 0, None, None
 
     progress_data = {
-        'total_file_size': total_size, # Overall file size for reference
-        'total_downloaded_so_far': 0,  # New key for overall progress
-        'chunks_status': [ # Status for each chunk
+        'total_file_size': total_size,
+        'total_downloaded_so_far': 0,
+        'chunks_status': [
             {'id': i, 'downloaded': 0, 'total': chunk_actual_sizes[i] if i < len(chunk_actual_sizes) else 0, 'active': False, 'speed_bps': 0.0}
             for i in range(num_parts)
         ],
-        'lock': threading.Lock()
+        'lock': threading.Lock(),
+        'last_global_emit_time': [time.time()]
     }
 
     chunk_futures = []
     all_chunks_successful = True
-    total_bytes_from_chunks = 0 # Still useful to verify total downloaded against file size
+    total_bytes_from_chunks = 0
 
     with ThreadPoolExecutor(max_workers=num_parts, thread_name_prefix=f"MPChunk_{api_original_filename[:10]}_") as chunk_pool:
         for i, (start, end) in enumerate(chunks_ranges):
@@ -194,8 +189,8 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
             chunk_futures.append(chunk_pool.submit(
                 _download_individual_chunk, chunk_url=file_url, temp_file_path=temp_file_path,
                 start_byte=start, end_byte=end, headers=headers, part_num=i, total_parts=num_parts,
-                progress_data=progress_data, cancellation_event=cancellation_event, skip_event=skip_event,
-                logger_func=logger_func, emitter=emitter_for_multipart, # Pass emitter
+                progress_data=progress_data, cancellation_event=cancellation_event, skip_event=skip_event, global_emit_time_ref=progress_data['last_global_emit_time'],
+                pause_event=pause_event, cookies_for_chunk=cookies_for_chunk_session, logger_func=logger_func, emitter=emitter_for_multipart,
                 api_original_filename=api_original_filename
             ))
 
@@ -209,26 +204,21 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
     if cancellation_event and cancellation_event.is_set():
         logger_func(f"   Multi-part download for '{api_original_filename}' cancelled by main event.")
         all_chunks_successful = False
-
-    # Ensure a final progress update is sent with all chunks marked inactive (unless still active due to error)
     if emitter_for_multipart:
         with progress_data['lock']:
-            # Ensure all chunks are marked inactive for the final signal if download didn't fully succeed or was cancelled
             status_list_copy = [dict(s) for s in progress_data['chunks_status']]
             if isinstance(emitter_for_multipart, queue.Queue):
                 emitter_for_multipart.put({'type': 'file_progress', 'payload': (api_original_filename, status_list_copy)})
-            elif hasattr(emitter_for_multipart, 'file_progress_signal'): # PostProcessorSignals-like
+            elif hasattr(emitter_for_multipart, 'file_progress_signal'):
                 emitter_for_multipart.file_progress_signal.emit(api_original_filename, status_list_copy)
 
     if all_chunks_successful and (total_bytes_from_chunks == total_size or total_size == 0):
         logger_func(f"   ✅ Multi-part download successful for '{api_original_filename}'. Total bytes: {total_bytes_from_chunks}")
         md5_hasher = hashlib.md5()
         with open(temp_file_path, 'rb') as f_hash:
-            for buf in iter(lambda: f_hash.read(4096*10), b''): # Read in larger buffers for hashing
+            for buf in iter(lambda: f_hash.read(4096*10), b''):
                 md5_hasher.update(buf)
         calculated_hash = md5_hasher.hexdigest()
-        # Return an open file handle for the caller to manage (e.g., for compression)
-        # The caller is responsible for closing this handle and renaming/deleting the .part file.
         return True, total_bytes_from_chunks, calculated_hash, open(temp_file_path, 'rb')
     else:
         logger_func(f"   ❌ Multi-part download failed for '{api_original_filename}'. Success: {all_chunks_successful}, Bytes: {total_bytes_from_chunks}/{total_size}. Cleaning up.")

src/ui/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/ui/assets.py

@@ -0,0 +1,53 @@
+# --- Standard Library Imports ---
+import os
+import sys
+
+# --- PyQt5 Imports ---
+from PyQt5.QtGui import QIcon
+
+# --- Asset Management ---
+
+# This global variable will cache the icon so we don't have to load it from disk every time.
+_app_icon_cache = None
+
+def get_app_icon_object():
+    """
+    Loads and caches the application icon from the assets folder.
+    This function is now centralized to prevent circular imports.
+
+    Returns:
+        QIcon: The application icon object.
+    """
+    global _app_icon_cache
+    if _app_icon_cache and not _app_icon_cache.isNull():
+        return _app_icon_cache
+
+    # Declare a single variable to hold the base directory path.
+    app_base_dir = ""
+    
+    # Determine the project's base directory, whether running from source or as a bundled app
+    if getattr(sys, 'frozen', False):
+        # The application is frozen (e.g., with PyInstaller).
+        # The base directory is the one containing the executable.
+        app_base_dir = os.path.dirname(sys.executable)
+    else:
+        # The application is running from a .py file.
+        # This path navigates up from src/ui/assets.py to the project root.
+        app_base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
+
+    icon_path = os.path.join(app_base_dir, 'assets', 'Kemono.ico')
+    
+    if os.path.exists(icon_path):
+        _app_icon_cache = QIcon(icon_path)
+    else:
+        # If the icon isn't found, especially in a frozen app, check the _MEIPASS directory as a fallback.
+        if getattr(sys, 'frozen', False) and hasattr(sys, '_MEIPASS'):
+            fallback_icon_path = os.path.join(sys._MEIPASS, 'assets', 'Kemono.ico')
+            if os.path.exists(fallback_icon_path):
+                _app_icon_cache = QIcon(fallback_icon_path)
+                return _app_icon_cache
+        
+        print(f"Warning: Application icon not found at {icon_path}")
+        _app_icon_cache = QIcon() # Return an empty icon as a fallback
+        
+    return _app_icon_cache

src/ui/dialogs/ConfirmAddAllDialog.py

@@ -0,0 +1,177 @@
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QListWidget, QListWidgetItem,
+    QPushButton, QVBoxLayout
+)
+
+# --- Local Application Imports ---
+# This assumes the new project structure is in place.
+from ...i18n.translator import get_translation
+# get_app_icon_object is defined in the main window module in this refactoring plan.
+from ..main_window import get_app_icon_object
+
+# --- Constants for Dialog Choices ---
+# These were moved from main.py to be self-contained within this module's context.
+CONFIRM_ADD_ALL_ACCEPTED = 1
+CONFIRM_ADD_ALL_SKIP_ADDING = 2
+CONFIRM_ADD_ALL_CANCEL_DOWNLOAD = 3
+
+
+class ConfirmAddAllDialog(QDialog):
+    """
+    A dialog to confirm adding multiple new character/series names to Known.txt.
+    It appears when the user provides filter names that are not already known,
+    allowing them to persist these names for future use.
+    """
+
+    def __init__(self, new_filter_objects_list, parent_app, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            new_filter_objects_list (list): A list of filter objects (dicts) to propose adding.
+            parent_app (DownloaderApp): A reference to the main application window for theming and translations.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app
+        self.setModal(True)
+        self.new_filter_objects_list = new_filter_objects_list
+        # Default choice if the dialog is closed without a button press
+        self.user_choice = CONFIRM_ADD_ALL_CANCEL_DOWNLOAD
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+        
+        # Set window size dynamically
+        screen_height = QApplication.primaryScreen().availableGeometry().height() if QApplication.primaryScreen() else 768
+        scale_factor = screen_height / 768.0
+        base_min_w, base_min_h = 480, 350
+        scaled_min_w = int(base_min_w * scale_factor)
+        scaled_min_h = int(base_min_h * scale_factor)
+        self.setMinimumSize(scaled_min_w, scaled_min_h)
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        main_layout = QVBoxLayout(self)
+
+        self.info_label = QLabel()
+        self.info_label.setWordWrap(True)
+        main_layout.addWidget(self.info_label)
+
+        self.names_list_widget = QListWidget()
+        self._populate_list()
+        main_layout.addWidget(self.names_list_widget)
+
+        # --- Selection Buttons ---
+        selection_buttons_layout = QHBoxLayout()
+        self.select_all_button = QPushButton()
+        self.select_all_button.clicked.connect(self._select_all_items)
+        selection_buttons_layout.addWidget(self.select_all_button)
+
+        self.deselect_all_button = QPushButton()
+        self.deselect_all_button.clicked.connect(self._deselect_all_items)
+        selection_buttons_layout.addWidget(self.deselect_all_button)
+        selection_buttons_layout.addStretch()
+        main_layout.addLayout(selection_buttons_layout)
+
+        # --- Action Buttons ---
+        buttons_layout = QHBoxLayout()
+        self.add_selected_button = QPushButton()
+        self.add_selected_button.clicked.connect(self._accept_add_selected)
+        self.add_selected_button.setDefault(True)
+        buttons_layout.addWidget(self.add_selected_button)
+
+        self.skip_adding_button = QPushButton()
+        self.skip_adding_button.clicked.connect(self._reject_skip_adding)
+        buttons_layout.addWidget(self.skip_adding_button)
+        buttons_layout.addStretch()
+
+        self.cancel_download_button = QPushButton()
+        self.cancel_download_button.clicked.connect(self._reject_cancel_download)
+        buttons_layout.addWidget(self.cancel_download_button)
+
+        main_layout.addLayout(buttons_layout)
+        
+    def _populate_list(self):
+        """Populates the list widget with the new names to be confirmed."""
+        for filter_obj in self.new_filter_objects_list:
+            item_text = filter_obj["name"]
+            list_item = QListWidgetItem(item_text)
+            list_item.setFlags(list_item.flags() | Qt.ItemIsUserCheckable)
+            list_item.setCheckState(Qt.Checked)
+            list_item.setData(Qt.UserRole, filter_obj)
+            self.names_list_widget.addItem(list_item)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("confirm_add_all_dialog_title", "Confirm Adding New Names"))
+        self.info_label.setText(self._tr("confirm_add_all_info_label", "The following new names/groups..."))
+        self.select_all_button.setText(self._tr("confirm_add_all_select_all_button", "Select All"))
+        self.deselect_all_button.setText(self._tr("confirm_add_all_deselect_all_button", "Deselect All"))
+        self.add_selected_button.setText(self._tr("confirm_add_all_add_selected_button", "Add Selected to Known.txt"))
+        self.skip_adding_button.setText(self._tr("confirm_add_all_skip_adding_button", "Skip Adding These"))
+        self.cancel_download_button.setText(self._tr("confirm_add_all_cancel_download_button", "Cancel Download"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'get_dark_theme') and self.parent_app.current_theme == "dark":
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+
+    def _select_all_items(self):
+        """Checks all items in the list."""
+        for i in range(self.names_list_widget.count()):
+            self.names_list_widget.item(i).setCheckState(Qt.Checked)
+
+    def _deselect_all_items(self):
+        """Unchecks all items in the list."""
+        for i in range(self.names_list_widget.count()):
+            self.names_list_widget.item(i).setCheckState(Qt.Unchecked)
+
+    def _accept_add_selected(self):
+        """Sets the user choice to the list of selected items and accepts the dialog."""
+        selected_objects = []
+        for i in range(self.names_list_widget.count()):
+            item = self.names_list_widget.item(i)
+            if item.checkState() == Qt.Checked:
+                filter_obj = item.data(Qt.UserRole)
+                if filter_obj:
+                    selected_objects.append(filter_obj)
+        
+        self.user_choice = selected_objects
+        self.accept()
+
+    def _reject_skip_adding(self):
+        """Sets the user choice to skip adding and rejects the dialog."""
+        self.user_choice = CONFIRM_ADD_ALL_SKIP_ADDING
+        self.reject()
+
+    def _reject_cancel_download(self):
+        """Sets the user choice to cancel the entire download and rejects the dialog."""
+        self.user_choice = CONFIRM_ADD_ALL_CANCEL_DOWNLOAD
+        self.reject()
+
+    def exec_(self):
+        """
+        Overrides the default exec_ to handle the return value logic, ensuring a
+        sensible default if no items are selected but the "Add" button is clicked.
+        """
+        super().exec_()
+        # If the user clicked "Add Selected" but didn't select any items, treat it as skipping.
+        if isinstance(self.user_choice, list) and not self.user_choice:
+            return CONFIRM_ADD_ALL_SKIP_ADDING
+        return self.user_choice

src/ui/dialogs/CookieHelpDialog.py

@@ -0,0 +1,135 @@
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt
+from PyQt5.QtGui import QIcon
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QPushButton, QVBoxLayout
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+
+
+class CookieHelpDialog(QDialog):
+    """
+    A dialog to explain how to get a cookies.txt file.
+    It can be displayed as a simple informational popup or as a modal choice
+    when cookies are required but not found.
+    """
+    # Constants to define the user's choice from the dialog
+    CHOICE_PROCEED_WITHOUT_COOKIES = 1
+    CHOICE_CANCEL_DOWNLOAD = 2
+    CHOICE_OK_INFO_ONLY = 3
+
+    def __init__(self, parent_app, parent=None, offer_download_without_option=False):
+        """
+        Initializes the dialog.
+
+        Args:
+            parent_app (DownloaderApp): A reference to the main application window.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+            offer_download_without_option (bool): If True, shows buttons to
+                "Download without Cookies" and "Cancel Download". If False,
+                shows only an "OK" button for informational purposes.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app
+        self.setModal(True)
+        self.offer_download_without_option = offer_download_without_option
+        self.user_choice = None
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        self.setMinimumWidth(500)
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        main_layout = QVBoxLayout(self)
+
+        self.info_label = QLabel()
+        self.info_label.setTextFormat(Qt.RichText)
+        self.info_label.setOpenExternalLinks(True)
+        self.info_label.setWordWrap(True)
+        main_layout.addWidget(self.info_label)
+
+        button_layout = QHBoxLayout()
+        button_layout.addStretch(1)
+
+        if self.offer_download_without_option:
+            # Add buttons for making a choice
+            self.download_without_button = QPushButton()
+            self.download_without_button.clicked.connect(self._proceed_without_cookies)
+            button_layout.addWidget(self.download_without_button)
+
+            self.cancel_button = QPushButton()
+            self.cancel_button.clicked.connect(self._cancel_download)
+            button_layout.addWidget(self.cancel_button)
+        else:
+            # Add a simple OK button for informational display
+            self.ok_button = QPushButton()
+            self.ok_button.clicked.connect(self._ok_info_only)
+            button_layout.addWidget(self.ok_button)
+
+        main_layout.addLayout(button_layout)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("cookie_help_dialog_title", "Cookie File Instructions"))
+
+        instruction_html = f"""
+        {self._tr("cookie_help_instruction_intro", "<p>To use cookies...</p>")}
+        {self._tr("cookie_help_how_to_get_title", "<p><b>How to get cookies.txt:</b></p>")}
+        <ol>
+            {self._tr("cookie_help_step1_extension_intro", "<li>Install extension...</li>")}
+            {self._tr("cookie_help_step2_login", "<li>Go to website...</li>")}
+            {self._tr("cookie_help_step3_click_icon", "<li>Click icon...</li>")}
+            {self._tr("cookie_help_step4_export", "<li>Click export...</li>")}
+            {self._tr("cookie_help_step5_save_file", "<li>Save file...</li>")}
+            {self._tr("cookie_help_step6_app_intro", "<li>In this application:<ul>")}
+            {self._tr("cookie_help_step6a_checkbox", "<li>Ensure checkbox...</li>")}
+            {self._tr("cookie_help_step6b_browse", "<li>Click browse...</li>")}
+            {self._tr("cookie_help_step6c_select", "<li>Select file...</li></ul></li>")}
+        </ol>
+        {self._tr("cookie_help_alternative_paste", "<p>Alternatively, paste...</p>")}
+        """
+        self.info_label.setText(instruction_html)
+
+        if self.offer_download_without_option:
+            self.download_without_button.setText(self._tr("cookie_help_proceed_without_button", "Download without Cookies"))
+            self.cancel_button.setText(self._tr("cookie_help_cancel_download_button", "Cancel Download"))
+        else:
+            self.ok_button.setText(self._tr("ok_button", "OK"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'get_dark_theme') and self.parent_app.current_theme == "dark":
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+
+    def _proceed_without_cookies(self):
+        """Handles the user choice to proceed without using cookies."""
+        self.user_choice = self.CHOICE_PROCEED_WITHOUT_COOKIES
+        self.accept()
+
+    def _cancel_download(self):
+        """Handles the user choice to cancel the download."""
+        self.user_choice = self.CHOICE_CANCEL_DOWNLOAD
+        self.reject()
+
+    def _ok_info_only(self):
+        """Handles the acknowledgment when the dialog is purely informational."""
+        self.user_choice = self.CHOICE_OK_INFO_ONLY
+        self.accept()

src/ui/dialogs/DownloadExtractedLinksDialog.py

@@ -0,0 +1,183 @@
+# --- Standard Library Imports ---
+from collections import defaultdict
+
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import pyqtSignal, Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QListWidget, QListWidgetItem,
+    QMessageBox, QPushButton, QVBoxLayout, QAbstractItemView
+)
+
+# --- Local Application Imports ---
+# This assumes the new project structure is in place.
+from ...i18n.translator import get_translation
+# get_app_icon_object is defined in the main window module in this refactoring plan.
+from ..main_window import get_app_icon_object
+
+
+class DownloadExtractedLinksDialog(QDialog):
+    """
+    A dialog to select and initiate the download for extracted, supported links
+    from external cloud services like Mega, Google Drive, and Dropbox.
+    """
+
+    # Signal emitted with a list of selected link information dictionaries
+    download_requested = pyqtSignal(list)
+
+    def __init__(self, links_data, parent_app, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            links_data (list): A list of dictionaries, each containing info about an extracted link.
+            parent_app (DownloaderApp): A reference to the main application window for theming and translations.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.links_data = links_data
+        self.parent_app = parent_app
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        # Set window size dynamically based on the parent window's size
+        if parent:
+            parent_width = parent.width()
+            parent_height = parent.height()
+            # Use a scaling factor for different screen resolutions
+            screen_height = QApplication.primaryScreen().availableGeometry().height() if QApplication.primaryScreen() else 768
+            scale_factor = screen_height / 768.0
+
+            base_min_w, base_min_h = 500, 400
+            scaled_min_w = int(base_min_w * scale_factor)
+            scaled_min_h = int(base_min_h * scale_factor)
+
+            self.setMinimumSize(scaled_min_w, scaled_min_h)
+            self.resize(max(int(parent_width * 0.6 * scale_factor), scaled_min_w),
+                        max(int(parent_height * 0.7 * scale_factor), scaled_min_h))
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        layout = QVBoxLayout(self)
+
+        self.main_info_label = QLabel()
+        self.main_info_label.setAlignment(Qt.AlignHCenter | Qt.AlignTop)
+        self.main_info_label.setWordWrap(True)
+        layout.addWidget(self.main_info_label)
+
+        self.links_list_widget = QListWidget()
+        self.links_list_widget.setSelectionMode(QAbstractItemView.NoSelection)
+        self._populate_list()
+        layout.addWidget(self.links_list_widget)
+
+        # --- Control Buttons ---
+        button_layout = QHBoxLayout()
+        self.select_all_button = QPushButton()
+        self.select_all_button.clicked.connect(lambda: self._set_all_items_checked(Qt.Checked))
+        button_layout.addWidget(self.select_all_button)
+
+        self.deselect_all_button = QPushButton()
+        self.deselect_all_button.clicked.connect(lambda: self._set_all_items_checked(Qt.Unchecked))
+        button_layout.addWidget(self.deselect_all_button)
+        button_layout.addStretch()
+
+        self.download_button = QPushButton()
+        self.download_button.clicked.connect(self._handle_download_selected)
+        self.download_button.setDefault(True)
+        button_layout.addWidget(self.download_button)
+
+        self.cancel_button = QPushButton()
+        self.cancel_button.clicked.connect(self.reject)
+        button_layout.addWidget(self.cancel_button)
+        layout.addLayout(button_layout)
+
+    def _populate_list(self):
+        """Populates the list widget with the provided links, grouped by post title."""
+        grouped_links = defaultdict(list)
+        for link_info_item in self.links_data:
+            post_title_for_group = link_info_item.get('title', 'Untitled Post')
+            grouped_links[post_title_for_group].append(link_info_item)
+
+        sorted_post_titles = sorted(grouped_links.keys(), key=lambda x: x.lower())
+
+        for post_title_key in sorted_post_titles:
+            # Add a non-selectable header for each post
+            header_item = QListWidgetItem(f"{post_title_key}")
+            header_item.setFlags(Qt.NoItemFlags)
+            font = header_item.font()
+            font.setBold(True)
+            font.setPointSize(font.pointSize() + 1)
+            header_item.setFont(font)
+            self.links_list_widget.addItem(header_item)
+
+            # Add checkable items for each link within that post
+            for link_info_data in grouped_links[post_title_key]:
+                platform_display = link_info_data.get('platform', 'unknown').upper()
+                display_text = f"  [{platform_display}] {link_info_data['link_text']} ({link_info_data['url']})"
+                item = QListWidgetItem(display_text)
+                item.setData(Qt.UserRole, link_info_data)
+                item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
+                item.setCheckState(Qt.Checked)
+                self.links_list_widget.addItem(item)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on current app language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("download_external_links_dialog_title", "Download Selected External Links"))
+        self.main_info_label.setText(self._tr("download_external_links_dialog_main_label", "Found {count} supported link(s)...").format(count=len(self.links_data)))
+        self.select_all_button.setText(self._tr("select_all_button_text", "Select All"))
+        self.deselect_all_button.setText(self._tr("deselect_all_button_text", "Deselect All"))
+        self.download_button.setText(self._tr("download_selected_button_text", "Download Selected"))
+        self.cancel_button.setText(self._tr("fav_posts_cancel_button", "Cancel"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        is_dark_theme = self.parent() and hasattr(self.parent_app, 'current_theme') and self.parent_app.current_theme == "dark"
+
+        if is_dark_theme and hasattr(self.parent_app, 'get_dark_theme'):
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+        
+        # Set header text color based on theme
+        header_color = Qt.cyan if is_dark_theme else Qt.blue
+        for i in range(self.links_list_widget.count()):
+            item = self.links_list_widget.item(i)
+            # Headers are not checkable
+            if not item.flags() & Qt.ItemIsUserCheckable:
+                item.setForeground(header_color)
+
+    def _set_all_items_checked(self, check_state):
+        """Sets the checked state for all checkable items in the list."""
+        for i in range(self.links_list_widget.count()):
+            item = self.links_list_widget.item(i)
+            if item.flags() & Qt.ItemIsUserCheckable:
+                item.setCheckState(check_state)
+
+    def _handle_download_selected(self):
+        """Gathers selected links and emits the download_requested signal."""
+        selected_links = []
+        for i in range(self.links_list_widget.count()):
+            item = self.links_list_widget.item(i)
+            if item.flags() & Qt.ItemIsUserCheckable and item.checkState() == Qt.Checked and item.data(Qt.UserRole) is not None:
+                selected_links.append(item.data(Qt.UserRole))
+
+        if selected_links:
+            self.download_requested.emit(selected_links)
+            self.accept()
+        else:
+            QMessageBox.information(
+                self,
+                self._tr("no_selection_title", "No Selection"),
+                self._tr("no_selection_message_links", "Please select at least one link to download.")
+            )

src/ui/dialogs/DownloadHistoryDialog.py

@@ -0,0 +1,221 @@
+# --- Standard Library Imports ---
+import os
+import time
+import json
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt, QStandardPaths, QTimer
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QScrollArea,
+    QPushButton, QVBoxLayout, QSplitter, QWidget, QGroupBox,
+    QFileDialog, QMessageBox
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+
+
+class DownloadHistoryDialog (QDialog ):
+    """Dialog to display download history."""
+    def __init__ (self ,last_3_downloaded_entries ,first_processed_entries ,parent_app ,parent =None ):
+        super ().__init__ (parent )
+        self .parent_app =parent_app 
+        self .last_3_downloaded_entries =last_3_downloaded_entries 
+        self .first_processed_entries =first_processed_entries 
+        self .setModal (True )
+
+        # Patch missing creator_display_name and creator_name using parent_app.creator_name_cache if available
+        creator_name_cache = getattr(parent_app, 'creator_name_cache', None)
+        if creator_name_cache:
+            # Patch left pane (files)
+            for entry in self.last_3_downloaded_entries:
+                if not entry.get('creator_display_name'):
+                    service = entry.get('service', '').lower()
+                    user_id = str(entry.get('user_id', ''))
+                    key = (service, user_id)
+                    entry['creator_display_name'] = creator_name_cache.get(key, entry.get('folder_context_name', 'Unknown Creator/Series'))
+            # Patch right pane (posts)
+            for entry in self.first_processed_entries:
+                if not entry.get('creator_name'):
+                    service = entry.get('service', '').lower()
+                    user_id = str(entry.get('user_id', ''))
+                    key = (service, user_id)
+                    entry['creator_name'] = creator_name_cache.get(key, entry.get('user_id', 'Unknown'))
+
+        app_icon =get_app_icon_object ()
+        if not app_icon .isNull ():
+            self .setWindowIcon (app_icon )
+
+        screen_height =QApplication .primaryScreen ().availableGeometry ().height ()if QApplication .primaryScreen ()else 768 
+        scale_factor =screen_height /768.0 
+        base_min_w ,base_min_h =600 ,450 
+
+        scaled_min_w =int (base_min_w *1.5 *scale_factor )
+        scaled_min_h =int (base_min_h *scale_factor )
+        self .setMinimumSize (scaled_min_w ,scaled_min_h )
+
+        self .setWindowTitle (self ._tr ("download_history_dialog_title_combined","Download History"))
+
+
+        dialog_layout =QVBoxLayout (self )
+        self .setLayout (dialog_layout )
+
+
+        self .main_splitter =QSplitter (Qt .Horizontal )
+        dialog_layout .addWidget (self .main_splitter )
+
+
+        left_pane_widget =QWidget ()
+        left_layout =QVBoxLayout (left_pane_widget )
+        left_header_label =QLabel (self ._tr ("history_last_downloaded_header","Last 3 Files Downloaded:"))
+        left_header_label .setAlignment (Qt .AlignCenter )
+        left_layout .addWidget (left_header_label )
+
+        left_scroll_area =QScrollArea ()
+        left_scroll_area .setWidgetResizable (True )
+        left_scroll_content_widget =QWidget ()
+        left_scroll_layout =QVBoxLayout (left_scroll_content_widget )
+
+        if not self .last_3_downloaded_entries :
+            no_left_history_label =QLabel (self ._tr ("no_download_history_header","No Downloads Yet"))
+            no_left_history_label .setAlignment (Qt .AlignCenter )
+            left_scroll_layout .addWidget (no_left_history_label )
+        else :
+            for entry in self .last_3_downloaded_entries :
+                group_box =QGroupBox (f"{self ._tr ('history_file_label','File:')} {entry .get ('disk_filename','N/A')}")
+                group_layout =QVBoxLayout (group_box )
+                details_text =(
+                f"<b>{self ._tr ('history_from_post_label','From Post:')}</b> {entry .get ('post_title','N/A')} (ID: {entry .get ('post_id','N/A')})<br>"
+                f"<b>{self ._tr ('history_creator_series_label','Creator/Series:')}</b> {entry .get ('creator_display_name','N/A')}<br>"
+                f"<b>{self ._tr ('history_post_uploaded_label','Post Uploaded:')}</b> {entry .get ('upload_date_str','N/A')}<br>"
+                f"<b>{self ._tr ('history_file_downloaded_label','File Downloaded:')}</b> {time .strftime ('%Y-%m-%d %H:%M:%S',time .localtime (entry .get ('download_timestamp',0 )))}<br>"
+                f"<b>{self ._tr ('history_saved_in_folder_label','Saved In Folder:')}</b> {entry .get ('download_path','N/A')}"
+                )
+                details_label =QLabel (details_text )
+                details_label .setWordWrap (True )
+                details_label .setTextFormat (Qt .RichText )
+                group_layout .addWidget (details_label )
+                left_scroll_layout .addWidget (group_box )
+        left_scroll_area .setWidget (left_scroll_content_widget )
+        left_layout .addWidget (left_scroll_area )
+        self .main_splitter .addWidget (left_pane_widget )
+
+
+        right_pane_widget =QWidget ()
+        right_layout =QVBoxLayout (right_pane_widget )
+        right_header_label =QLabel (self ._tr ("first_files_processed_header","First {count} Posts Processed This Session:").format (count =len (self .first_processed_entries )))
+        right_header_label .setAlignment (Qt .AlignCenter )
+        right_layout .addWidget (right_header_label )
+
+        right_scroll_area =QScrollArea ()
+        right_scroll_area .setWidgetResizable (True )
+        right_scroll_content_widget =QWidget ()
+        right_scroll_layout =QVBoxLayout (right_scroll_content_widget )
+
+        if not self .first_processed_entries :
+            no_right_history_label =QLabel (self ._tr ("no_processed_history_header","No Posts Processed Yet"))
+            no_right_history_label .setAlignment (Qt .AlignCenter )
+            right_scroll_layout .addWidget (no_right_history_label )
+        else :
+            for entry in self .first_processed_entries :
+
+                group_box =QGroupBox (f"{self ._tr ('history_post_label','Post:')} {entry .get ('post_title','N/A')} (ID: {entry .get ('post_id','N/A')})")
+                group_layout =QVBoxLayout (group_box )
+                details_text =(
+                f"<b>{self ._tr ('history_creator_label','Creator:')}</b> {entry .get ('creator_name','N/A')}<br>"
+                f"<b>{self ._tr ('history_top_file_label','Top File:')}</b> {entry .get ('top_file_name','N/A')}<br>"
+                f"<b>{self ._tr ('history_num_files_label','Num Files in Post:')}</b> {entry .get ('num_files',0 )}<br>"
+                f"<b>{self ._tr ('history_post_uploaded_label','Post Uploaded:')}</b> {entry .get ('upload_date_str','N/A')}<br>"
+                f"<b>{self ._tr ('history_processed_on_label','Processed On:')}</b> {time .strftime ('%Y-%m-%d %H:%M:%S',time .localtime (entry .get ('download_date_timestamp',0 )))}<br>"
+                f"<b>{self ._tr ('history_saved_to_folder_label','Saved To Folder:')}</b> {entry .get ('download_location','N/A')}"
+                )
+                details_label =QLabel (details_text )
+                details_label .setWordWrap (True )
+                details_label .setTextFormat (Qt .RichText )
+                group_layout .addWidget (details_label )
+                right_scroll_layout .addWidget (group_box )
+        right_scroll_area .setWidget (right_scroll_content_widget )
+        right_layout .addWidget (right_scroll_area )
+        self .main_splitter .addWidget (right_pane_widget )
+
+
+        QTimer .singleShot (0 ,lambda :self .main_splitter .setSizes ([self .width ()//2 ,self .width ()//2 ]))
+
+
+        bottom_button_layout =QHBoxLayout ()
+        self .save_history_button =QPushButton (self ._tr ("history_save_button_text","Save History to .txt"))
+        self .save_history_button .clicked .connect (self ._save_history_to_txt )
+        bottom_button_layout .addStretch (1 )
+        bottom_button_layout .addWidget (self .save_history_button )
+
+        dialog_layout .addLayout (bottom_button_layout )
+
+        if self .parent_app and hasattr (self .parent_app ,'get_dark_theme')and self .parent_app .current_theme =="dark":
+            self .setStyleSheet (self .parent_app .get_dark_theme ())
+
+    def _tr (self ,key ,default_text =""):
+        if callable (get_translation )and self .parent_app :
+            return get_translation (self .parent_app .current_selected_language ,key ,default_text )
+        return default_text 
+
+    def _save_history_to_txt (self ):
+        if not self .last_3_downloaded_entries and not self .first_processed_entries :
+            QMessageBox .information (self ,self ._tr ("no_download_history_header","No Downloads Yet"),
+            self ._tr ("history_nothing_to_save_message","There is no history to save."))
+            return 
+
+        main_download_dir =self .parent_app .dir_input .text ().strip ()
+        default_save_dir =""
+        if main_download_dir and os .path .isdir (main_download_dir ):
+            default_save_dir =main_download_dir 
+        else :
+            fallback_dir =QStandardPaths .writableLocation (QStandardPaths .DocumentsLocation )
+            if fallback_dir and os .path .isdir (fallback_dir ):
+                default_save_dir =fallback_dir 
+            else :
+                default_save_dir =self .parent_app .app_base_dir 
+
+        default_filepath =os .path .join (default_save_dir ,"download_history.txt")
+
+        filepath ,_ =QFileDialog .getSaveFileName (
+        self ,self ._tr ("history_save_dialog_title","Save Download History"),
+        default_filepath ,"Text Files (*.txt);;All Files (*)"
+        )
+
+        if not filepath :
+            return 
+
+        history_content =[]
+        history_content .append (f"{self ._tr ('history_last_downloaded_header','Last 3 Files Downloaded:')}\n")
+        if self .last_3_downloaded_entries :
+            for entry in self .last_3_downloaded_entries :
+                history_content .append (f"  {self ._tr ('history_file_label','File:')} {entry .get ('disk_filename','N/A')}")
+                history_content .append (f"    {self ._tr ('history_from_post_label','From Post:')} {entry .get ('post_title','N/A')} (ID: {entry .get ('post_id','N/A')})")
+                history_content .append (f"    {self ._tr ('history_creator_series_label','Creator/Series:')} {entry .get ('creator_display_name','N/A')}")
+                history_content .append (f"    {self ._tr ('history_post_uploaded_label','Post Uploaded:')} {entry .get ('upload_date_str','N/A')}")
+                history_content .append (f"    {self ._tr ('history_file_downloaded_label','File Downloaded:')} {time .strftime ('%Y-%m-%d %H:%M:%S',time .localtime (entry .get ('download_timestamp',0 )))}")
+                history_content .append (f"    {self ._tr ('history_saved_in_folder_label','Saved In Folder:')} {entry .get ('download_path','N/A')}\n")
+        else :
+            history_content .append (f"  ({self ._tr ('no_download_history_header','No Downloads Yet')})\n")
+
+        history_content .append (f"\n{self ._tr ('first_files_processed_header','First {count} Posts Processed This Session:').format (count =len (self .first_processed_entries ))}\n")
+        if self .first_processed_entries :
+            for entry in self .first_processed_entries :
+                history_content .append (f"  {self ._tr ('history_post_label','Post:')} {entry .get ('post_title','N/A')} (ID: {entry .get ('post_id','N/A')})")
+                history_content .append (f"    {self ._tr ('history_creator_label','Creator:')} {entry .get ('creator_name','N/A')}")
+                history_content .append (f"    {self ._tr ('history_top_file_label','Top File:')} {entry .get ('top_file_name','N/A')}")
+                history_content .append (f"    {self ._tr ('history_num_files_label','Num Files in Post:')} {entry .get ('num_files',0 )}")
+                history_content .append (f"    {self ._tr ('history_post_uploaded_label','Post Uploaded:')} {entry .get ('upload_date_str','N/A')}")
+                history_content .append (f"    {self ._tr ('history_processed_on_label','Processed On:')} {time .strftime ('%Y-%m-%d %H:%M:%S',time .localtime (entry .get ('download_date_timestamp',0 )))}")
+                history_content .append (f"    {self ._tr ('history_saved_to_folder_label','Saved To Folder:')} {entry .get ('download_location','N/A')}\n")
+        else :
+            history_content .append (f"  ({self ._tr ('no_processed_history_header','No Posts Processed Yet')})\n")
+
+        try :
+            with open (filepath ,'w',encoding ='utf-8')as f :
+                f .write ("\n".join (history_content ))
+            QMessageBox .information (self ,self ._tr ("history_export_success_title","History Export Successful"),
+            self ._tr ("history_export_success_message","Successfully exported download history to:\n{filepath}").format (filepath =filepath ))
+        except Exception as e :
+            QMessageBox .critical (self ,self ._tr ("history_export_error_title","History Export Error"),
+            self ._tr ("history_export_error_message","Could not export download history: {error}").format (error =str (e )))

src/ui/dialogs/ErrorFilesDialog.py

@@ -0,0 +1,230 @@
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import pyqtSignal, Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QListWidget, QListWidgetItem,
+    QMessageBox, QPushButton, QVBoxLayout, QAbstractItemView, QFileDialog
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..assets import get_app_icon_object
+# Corrected Import: The filename uses PascalCase.
+from .ExportOptionsDialog import ExportOptionsDialog
+
+
+class ErrorFilesDialog(QDialog):
+    """
+    Dialog to display files that were skipped due to errors and
+    allows the user to retry downloading them or export the list of URLs.
+    """
+
+    # Signal emitted with a list of file info dictionaries to retry
+    retry_selected_signal = pyqtSignal(list)
+
+    def __init__(self, error_files_info_list, parent_app, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            error_files_info_list (list): A list of dictionaries, each containing
+                                          info about a failed file.
+            parent_app (DownloaderApp): A reference to the main application window
+                                      for theming and translations.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app
+        self.setModal(True)
+        self.error_files = error_files_info_list
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        # Set window size dynamically
+        screen_height = QApplication.primaryScreen().availableGeometry().height() if QApplication.primaryScreen() else 768
+        scale_factor = screen_height / 1080.0
+        base_min_w, base_min_h = 500, 300
+        scaled_min_w = int(base_min_w * scale_factor)
+        scaled_min_h = int(base_min_h * scale_factor)
+        self.setMinimumSize(scaled_min_w, scaled_min_h)
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        main_layout = QVBoxLayout(self)
+
+        self.info_label = QLabel()
+        self.info_label.setWordWrap(True)
+        main_layout.addWidget(self.info_label)
+
+        if self.error_files:
+            self.files_list_widget = QListWidget()
+            self.files_list_widget.setSelectionMode(QAbstractItemView.NoSelection)
+            self._populate_list()
+            main_layout.addWidget(self.files_list_widget)
+
+        # --- Control Buttons ---
+        buttons_layout = QHBoxLayout()
+        self.select_all_button = QPushButton()
+        self.select_all_button.clicked.connect(self._select_all_items)
+        buttons_layout.addWidget(self.select_all_button)
+
+        self.retry_button = QPushButton()
+        self.retry_button.clicked.connect(self._handle_retry_selected)
+        buttons_layout.addWidget(self.retry_button)
+
+        self.export_button = QPushButton()
+        self.export_button.clicked.connect(self._handle_export_errors_to_txt)
+        buttons_layout.addWidget(self.export_button)
+        buttons_layout.addStretch(1)
+
+        self.ok_button = QPushButton()
+        self.ok_button.clicked.connect(self.accept)
+        self.ok_button.setDefault(True)
+        buttons_layout.addWidget(self.ok_button)
+        main_layout.addLayout(buttons_layout)
+
+        # Enable/disable buttons based on whether there are errors
+        has_errors = bool(self.error_files)
+        self.select_all_button.setEnabled(has_errors)
+        self.retry_button.setEnabled(has_errors)
+        self.export_button.setEnabled(has_errors)
+
+    def _populate_list(self):
+        """Populates the list widget with details of the failed files."""
+        for error_info in self.error_files:
+            filename = error_info.get('forced_filename_override',
+                                      error_info.get('file_info', {}).get('name', 'Unknown Filename'))
+            post_title = error_info.get('post_title', 'Unknown Post')
+            post_id = error_info.get('original_post_id_for_log', 'N/A')
+
+            item_text = f"File: {filename}\nFrom Post: '{post_title}' (ID: {post_id})"
+            list_item = QListWidgetItem(item_text)
+            list_item.setData(Qt.UserRole, error_info)
+            list_item.setFlags(list_item.flags() | Qt.ItemIsUserCheckable)
+            list_item.setCheckState(Qt.Unchecked)
+            self.files_list_widget.addItem(list_item)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("error_files_dialog_title", "Files Skipped Due to Errors"))
+        if not self.error_files:
+            self.info_label.setText(self._tr("error_files_no_errors_label", "No files were recorded as skipped..."))
+        else:
+            self.info_label.setText(self._tr("error_files_found_label", "The following {count} file(s)...").format(count=len(self.error_files)))
+
+        self.select_all_button.setText(self._tr("error_files_select_all_button", "Select All"))
+        self.retry_button.setText(self._tr("error_files_retry_selected_button", "Retry Selected"))
+        self.export_button.setText(self._tr("error_files_export_urls_button", "Export URLs to .txt"))
+        self.ok_button.setText(self._tr("ok_button", "OK"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'current_theme') and self.parent_app.current_theme == "dark":
+            if hasattr(self.parent_app, 'get_dark_theme'):
+                self.setStyleSheet(self.parent_app.get_dark_theme())
+
+    def _select_all_items(self):
+        """Checks all items in the list."""
+        if hasattr(self, 'files_list_widget'):
+            for i in range(self.files_list_widget.count()):
+                self.files_list_widget.item(i).setCheckState(Qt.Checked)
+
+    def _handle_retry_selected(self):
+        """Gathers selected files and emits the retry signal."""
+        if not hasattr(self, 'files_list_widget'):
+            return
+
+        selected_files_for_retry = [
+            self.files_list_widget.item(i).data(Qt.UserRole)
+            for i in range(self.files_list_widget.count())
+            if self.files_list_widget.item(i).checkState() == Qt.Checked
+        ]
+
+        if selected_files_for_retry:
+            self.retry_selected_signal.emit(selected_files_for_retry)
+            self.accept()
+        else:
+            QMessageBox.information(
+                self,
+                self._tr("fav_artists_no_selection_title", "No Selection"),
+                self._tr("error_files_no_selection_retry_message", "Please select at least one file to retry.")
+            )
+
+    def _handle_export_errors_to_txt(self):
+        """Exports the URLs of failed files to a text file."""
+        if not self.error_files:
+            QMessageBox.information(
+                self,
+                self._tr("error_files_no_errors_export_title", "No Errors"),
+                self._tr("error_files_no_errors_export_message", "There are no error file URLs to export.")
+            )
+            return
+
+        options_dialog = ExportOptionsDialog(parent_app=self.parent_app, parent=self)
+        if not options_dialog.exec_() == QDialog.Accepted:
+            return
+
+        export_option = options_dialog.get_selected_option()
+
+        lines_to_export = []
+        for error_item in self.error_files:
+            file_info = error_item.get('file_info', {})
+            url = file_info.get('url')
+
+            if url:
+                if export_option == ExportOptionsDialog.EXPORT_MODE_WITH_DETAILS:
+                    original_filename = file_info.get('name', 'Unknown Filename')
+                    post_title = error_item.get('post_title', 'Unknown Post')
+                    post_id = error_item.get('original_post_id_for_log', 'N/A')
+                    details_string = f" [Post: '{post_title}' (ID: {post_id}), File: '{original_filename}']"
+                    lines_to_export.append(f"{url}{details_string}")
+                else:
+                    lines_to_export.append(url)
+
+        if not lines_to_export:
+            QMessageBox.information(
+                self,
+                self._tr("error_files_no_urls_found_export_title", "No URLs Found"),
+                self._tr("error_files_no_urls_found_export_message", "Could not extract any URLs...")
+            )
+            return
+
+        default_filename = "error_file_links.txt"
+        filepath, _ = QFileDialog.getSaveFileName(
+            self,
+            self._tr("error_files_save_dialog_title", "Save Error File URLs"),
+            default_filename,
+            "Text Files (*.txt);;All Files (*)"
+        )
+
+        if filepath:
+            try:
+                with open(filepath, 'w', encoding='utf-8') as f:
+                    for line in lines_to_export:
+                        f.write(f"{line}\n")
+                QMessageBox.information(
+                    self,
+                    self._tr("error_files_export_success_title", "Export Successful"),
+                    self._tr("error_files_export_success_message", "Successfully exported...").format(
+                        count=len(lines_to_export), filepath=filepath
+                    )
+                )
+            except Exception as e:
+                QMessageBox.critical(
+                    self,
+                    self._tr("error_files_export_error_title", "Export Error"),
+                    self._tr("error_files_export_error_message", "Could not export...").format(error=str(e))
+                )

src/ui/dialogs/ExportOptionsDialog.py

@@ -0,0 +1,118 @@
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QPushButton, QVBoxLayout,
+    QRadioButton, QButtonGroup
+)
+
+# --- Local Application Imports ---
+# This assumes the new project structure is in place.
+from ...i18n.translator import get_translation
+# get_app_icon_object is defined in the main window module in this refactoring plan.
+from ..main_window import get_app_icon_object
+
+
+class ExportOptionsDialog(QDialog):
+    """
+    Dialog to choose the export format for error file links.
+    It allows the user to select between exporting only the URLs or
+    exporting URLs with additional details.
+    """
+    # Constants to define the export modes
+    EXPORT_MODE_LINK_ONLY = 1
+    EXPORT_MODE_WITH_DETAILS = 2
+
+    def __init__(self, parent_app, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            parent_app (DownloaderApp): A reference to the main application window for theming and translations.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app
+        self.setModal(True)
+        # Default option
+        self.selected_option = self.EXPORT_MODE_LINK_ONLY
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        # Set window size dynamically
+        screen_height = QApplication.primaryScreen().availableGeometry().height() if QApplication.primaryScreen() else 768
+        scale_factor = screen_height / 768.0
+        base_min_w = 350
+        scaled_min_w = int(base_min_w * scale_factor)
+        self.setMinimumWidth(scaled_min_w)
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        layout = QVBoxLayout(self)
+
+        self.description_label = QLabel()
+        layout.addWidget(self.description_label)
+
+        self.radio_group = QButtonGroup(self)
+
+        self.radio_link_only = QRadioButton()
+        self.radio_link_only.setChecked(True)
+        self.radio_group.addButton(self.radio_link_only, self.EXPORT_MODE_LINK_ONLY)
+        layout.addWidget(self.radio_link_only)
+
+        self.radio_with_details = QRadioButton()
+        self.radio_group.addButton(self.radio_with_details, self.EXPORT_MODE_WITH_DETAILS)
+        layout.addWidget(self.radio_with_details)
+
+        # --- Action Buttons ---
+        button_layout = QHBoxLayout()
+        self.export_button = QPushButton()
+        self.export_button.clicked.connect(self._handle_export)
+        self.export_button.setDefault(True)
+
+        self.cancel_button = QPushButton()
+        self.cancel_button.clicked.connect(self.reject)
+
+        button_layout.addStretch(1)
+        button_layout.addWidget(self.export_button)
+        button_layout.addWidget(self.cancel_button)
+        layout.addLayout(button_layout)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("export_options_dialog_title", "Export Options"))
+        self.description_label.setText(self._tr("export_options_description_label", "Choose the format for exporting error file links:"))
+        self.radio_link_only.setText(self._tr("export_options_radio_link_only", "Link per line (URL only)"))
+        self.radio_link_only.setToolTip(self._tr("export_options_radio_link_only_tooltip", "Exports only the direct download URL..."))
+        self.radio_with_details.setText(self._tr("export_options_radio_with_details", "Export with details (URL [Post, File info])"))
+        self.radio_with_details.setToolTip(self._tr("export_options_radio_with_details_tooltip", "Exports the URL followed by details..."))
+        self.export_button.setText(self._tr("export_options_export_button", "Export"))
+        self.cancel_button.setText(self._tr("fav_posts_cancel_button", "Cancel"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'current_theme') and self.parent_app.current_theme == "dark":
+            if hasattr(self.parent_app, 'get_dark_theme'):
+                self.setStyleSheet(self.parent_app.get_dark_theme())
+
+    def _handle_export(self):
+        """Sets the selected export option and accepts the dialog."""
+        self.selected_option = self.radio_group.checkedId()
+        self.accept()
+
+    def get_selected_option(self):
+        """Returns the export mode chosen by the user."""
+        return self.selected_option

src/ui/dialogs/FavoriteArtistsDialog.py

@@ -0,0 +1,288 @@
+# --- Standard Library Imports ---
+import html
+import re
+
+# --- Third-Party Library Imports ---
+import requests
+from PyQt5.QtCore import QCoreApplication, Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QLineEdit, QListWidget,
+    QListWidgetItem, QMessageBox, QPushButton, QVBoxLayout
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+# Corrected Import: Get the icon from the new assets utility module
+from ..assets import get_app_icon_object 
+from ...utils.network_utils import prepare_cookies_for_request
+from .CookieHelpDialog import CookieHelpDialog
+
+
+class FavoriteArtistsDialog (QDialog ):
+    """Dialog to display and select favorite artists."""
+    def __init__ (self ,parent_app ,cookies_config ):
+        super ().__init__ (parent_app )
+        self .parent_app =parent_app 
+        self .cookies_config =cookies_config 
+        self .all_fetched_artists =[]
+
+        app_icon =get_app_icon_object ()
+        if not app_icon .isNull ():
+            self .setWindowIcon (app_icon )
+        self .selected_artist_urls =[]
+
+        self .setModal (True )
+        self .setMinimumSize (500 ,500 )
+
+        self ._init_ui ()
+        self ._fetch_favorite_artists ()
+
+    def _get_domain_for_service (self ,service_name ):
+        service_lower =service_name .lower ()
+        coomer_primary_services ={'onlyfans','fansly','manyvids','candfans'}
+        if service_lower in coomer_primary_services :
+            return "coomer.su"
+        else :
+            return "kemono.su"
+
+    def _tr (self ,key ,default_text =""):
+        """Helper to get translation based on current app language."""
+        if callable (get_translation )and self .parent_app :
+            return get_translation (self .parent_app .current_selected_language ,key ,default_text )
+        return default_text 
+
+    def _retranslate_ui (self ):
+        self .setWindowTitle (self ._tr ("fav_artists_dialog_title","Favorite Artists"))
+        self .status_label .setText (self ._tr ("fav_artists_loading_status","Loading favorite artists..."))
+        self .search_input .setPlaceholderText (self ._tr ("fav_artists_search_placeholder","Search artists..."))
+        self .select_all_button .setText (self ._tr ("fav_artists_select_all_button","Select All"))
+        self .deselect_all_button .setText (self ._tr ("fav_artists_deselect_all_button","Deselect All"))
+        self .download_button .setText (self ._tr ("fav_artists_download_selected_button","Download Selected"))
+        self .cancel_button .setText (self ._tr ("fav_artists_cancel_button","Cancel"))
+
+    def _init_ui (self ):
+        main_layout =QVBoxLayout (self )
+
+        self .status_label =QLabel ()
+        self .status_label .setAlignment (Qt .AlignCenter )
+        main_layout .addWidget (self .status_label )
+
+        self .search_input =QLineEdit ()
+        self .search_input .textChanged .connect (self ._filter_artist_list_display )
+        main_layout .addWidget (self .search_input )
+
+
+        self .artist_list_widget =QListWidget ()
+        self .artist_list_widget .setStyleSheet ("""
+            QListWidget::item {
+                border-bottom: 1px solid #4A4A4A; /* Slightly softer line */
+                padding-top: 4px;
+                padding-bottom: 4px;
+            }""")
+        main_layout .addWidget (self .artist_list_widget )
+        self .artist_list_widget .setAlternatingRowColors (True )
+        self .search_input .setVisible (False )
+        self .artist_list_widget .setVisible (False )
+
+        combined_buttons_layout =QHBoxLayout ()
+
+        self .select_all_button =QPushButton ()
+        self .select_all_button .clicked .connect (self ._select_all_items )
+        combined_buttons_layout .addWidget (self .select_all_button )
+
+        self .deselect_all_button =QPushButton ()
+        self .deselect_all_button .clicked .connect (self ._deselect_all_items )
+        combined_buttons_layout .addWidget (self .deselect_all_button )
+
+
+        self .download_button =QPushButton ()
+        self .download_button .clicked .connect (self ._accept_selection_action )
+        self .download_button .setEnabled (False )
+        self .download_button .setDefault (True )
+        combined_buttons_layout .addWidget (self .download_button )
+
+        self .cancel_button =QPushButton ()
+        self .cancel_button .clicked .connect (self .reject )
+        combined_buttons_layout .addWidget (self .cancel_button )
+
+        combined_buttons_layout .addStretch (1 )
+        main_layout .addLayout (combined_buttons_layout )
+
+        self ._retranslate_ui ()
+        if hasattr (self .parent_app ,'get_dark_theme')and self .parent_app .current_theme =="dark":
+            self .setStyleSheet (self .parent_app .get_dark_theme ())
+
+
+    def _logger (self ,message ):
+        """Helper to log messages, either to parent app or console."""
+        if hasattr (self .parent_app ,'log_signal')and self .parent_app .log_signal :
+            self .parent_app .log_signal .emit (f"[FavArtistsDialog] {message }")
+        else :
+            print (f"[FavArtistsDialog] {message }")
+
+    def _show_content_elements (self ,show ):
+        """Helper to show/hide content-related widgets."""
+        self .search_input .setVisible (show )
+        self .artist_list_widget .setVisible (show )
+
+    def _fetch_favorite_artists (self ):
+        kemono_fav_url ="https://kemono.su/api/v1/account/favorites?type=artist"
+        coomer_fav_url ="https://coomer.su/api/v1/account/favorites?type=artist"
+
+        self .all_fetched_artists =[]
+        fetched_any_successfully =False 
+        errors_occurred =[]
+        any_cookies_loaded_successfully_for_any_source =False 
+
+        api_sources =[
+        {"name":"Kemono.su","url":kemono_fav_url ,"domain":"kemono.su"},
+        {"name":"Coomer.su","url":coomer_fav_url ,"domain":"coomer.su"}
+        ]
+
+        for source in api_sources :
+            self ._logger (f"Attempting to fetch favorite artists from: {source ['name']} ({source ['url']})")
+            self .status_label .setText (self ._tr ("fav_artists_loading_from_source_status","⏳ Loading favorites from {source_name}...").format (source_name =source ['name']))
+            QCoreApplication .processEvents ()
+
+            cookies_dict_for_source =None 
+            if self .cookies_config ['use_cookie']:
+                cookies_dict_for_source =prepare_cookies_for_request (
+                True ,
+                self .cookies_config ['cookie_text'],
+                self .cookies_config ['selected_cookie_file'],
+                self .cookies_config ['app_base_dir'],
+                self ._logger ,
+                target_domain =source ['domain']
+                )
+                if cookies_dict_for_source :
+                    any_cookies_loaded_successfully_for_any_source =True 
+                else :
+                    self ._logger (f"Warning ({source ['name']}): Cookies enabled but could not be loaded for this domain. Fetch might fail if cookies are required.")
+            try :
+                headers ={'User-Agent':'Mozilla/5.0'}
+                response =requests .get (source ['url'],headers =headers ,cookies =cookies_dict_for_source ,timeout =20 )
+                response .raise_for_status ()
+                artists_data_from_api =response .json ()
+
+                if not isinstance (artists_data_from_api ,list ):
+                    error_msg =f"Error ({source ['name']}): API did not return a list of artists (got {type (artists_data_from_api )})."
+                    self ._logger (error_msg )
+                    errors_occurred .append (error_msg )
+                    continue 
+
+                processed_artists_from_source =0 
+                for artist_entry in artists_data_from_api :
+                    artist_id =artist_entry .get ("id")
+                    artist_name =html .unescape (artist_entry .get ("name","Unknown Artist").strip ())
+                    artist_service_platform =artist_entry .get ("service")
+
+                    if artist_id and artist_name and artist_service_platform :
+                        artist_page_domain =self ._get_domain_for_service (artist_service_platform )
+                        full_url =f"https://{artist_page_domain }/{artist_service_platform }/user/{artist_id }"
+
+                        self .all_fetched_artists .append ({
+                        'name':artist_name ,
+                        'url':full_url ,
+                        'service':artist_service_platform ,
+                        'id':artist_id ,
+                        '_source_api':source ['name']
+                        })
+                        processed_artists_from_source +=1 
+                    else :
+                        self ._logger (f"Warning ({source ['name']}): Skipping favorite artist entry due to missing data: {artist_entry }")
+
+                if processed_artists_from_source >0 :
+                    fetched_any_successfully =True 
+                self ._logger (f"Fetched {processed_artists_from_source } artists from {source ['name']}.")
+
+            except requests .exceptions .RequestException as e :
+                error_msg =f"Error fetching favorites from {source ['name']}: {e }"
+                self ._logger (error_msg )
+                errors_occurred .append (error_msg )
+            except Exception as e :
+                error_msg =f"An unexpected error occurred with {source ['name']}: {e }"
+                self ._logger (error_msg )
+                errors_occurred .append (error_msg )
+
+
+        if self .cookies_config ['use_cookie']and not any_cookies_loaded_successfully_for_any_source :
+            self .status_label .setText (self ._tr ("fav_artists_cookies_required_status","Error: Cookies enabled but could not be loaded for any source."))
+            self ._logger ("Error: Cookies enabled but no cookies loaded for any source. Showing help dialog.")
+            cookie_help_dialog =CookieHelpDialog (self )
+            cookie_help_dialog .exec_ ()
+            self .download_button .setEnabled (False )
+            if not fetched_any_successfully :
+                 errors_occurred .append ("Cookies enabled but could not be loaded for any API source.")
+
+        unique_artists_map ={}
+        for artist in self .all_fetched_artists :
+            key =(artist ['service'].lower (),str (artist ['id']).lower ())
+            if key not in unique_artists_map :
+                unique_artists_map [key ]=artist 
+        self .all_fetched_artists =list (unique_artists_map .values ())
+
+        self .all_fetched_artists .sort (key =lambda x :x ['name'].lower ())
+        self ._populate_artist_list_widget ()
+
+        if fetched_any_successfully and self .all_fetched_artists :
+            self .status_label .setText (self ._tr ("fav_artists_found_status","Found {count} total favorite artist(s).").format (count =len (self .all_fetched_artists )))
+            self ._show_content_elements (True )
+            self .download_button .setEnabled (True )
+        elif not fetched_any_successfully and not errors_occurred :
+             self .status_label .setText (self ._tr ("fav_artists_none_found_status","No favorite artists found on Kemono.su or Coomer.su."))
+             self ._show_content_elements (False )
+             self .download_button .setEnabled (False )
+        else :
+            final_error_message =self ._tr ("fav_artists_failed_status","Failed to fetch favorites.")
+            if errors_occurred :
+                final_error_message +=" Errors: "+"; ".join (errors_occurred )
+            self .status_label .setText (final_error_message )
+            self ._show_content_elements (False )
+            self .download_button .setEnabled (False )
+            if fetched_any_successfully and not self .all_fetched_artists :
+                 self .status_label .setText (self ._tr ("fav_artists_no_favorites_after_processing","No favorite artists found after processing."))
+
+    def _populate_artist_list_widget (self ,artists_to_display =None ):
+        self .artist_list_widget .clear ()
+        source_list =artists_to_display if artists_to_display is not None else self .all_fetched_artists 
+        for artist_data in source_list :
+            item =QListWidgetItem (f"{artist_data ['name']} ({artist_data .get ('service','N/A').capitalize ()})")
+            item .setFlags (item .flags ()|Qt .ItemIsUserCheckable )
+            item .setCheckState (Qt .Unchecked )
+            item .setData (Qt .UserRole ,artist_data )
+            self .artist_list_widget .addItem (item )
+
+    def _filter_artist_list_display (self ):
+        search_text =self .search_input .text ().lower ().strip ()
+        if not search_text :
+            self ._populate_artist_list_widget ()
+            return 
+
+        filtered_artists =[
+        artist for artist in self .all_fetched_artists 
+        if search_text in artist ['name'].lower ()or search_text in artist ['url'].lower ()
+        ]
+        self ._populate_artist_list_widget (filtered_artists )
+
+    def _select_all_items (self ):
+        for i in range (self .artist_list_widget .count ()):
+            self .artist_list_widget .item (i ).setCheckState (Qt .Checked )
+
+    def _deselect_all_items (self ):
+        for i in range (self .artist_list_widget .count ()):
+            self .artist_list_widget .item (i ).setCheckState (Qt .Unchecked )
+
+    def _accept_selection_action (self ):
+        self .selected_artists_data =[]
+        for i in range (self .artist_list_widget .count ()):
+            item =self .artist_list_widget .item (i )
+            if item .checkState ()==Qt .Checked :
+                self .selected_artists_data .append (item .data (Qt .UserRole ))
+
+        if not self .selected_artists_data :
+            QMessageBox .information (self ,"No Selection","Please select at least one artist to download.")
+            return 
+        self .accept ()
+
+    def get_selected_artists (self ):
+        return self .selected_artists_data     

src/ui/dialogs/FavoritePostsDialog.py

@@ -0,0 +1,629 @@
+# --- Standard Library Imports ---
+import html
+import os
+import sys
+import threading
+import time
+import traceback
+import json
+import re
+from collections import defaultdict
+
+# --- Third-Party Library Imports ---
+import requests
+from PyQt5.QtCore import QCoreApplication, Qt, pyqtSignal, QThread
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QLineEdit, QListWidget,
+    QListWidgetItem, QMessageBox, QPushButton, QVBoxLayout, QProgressBar,
+    QWidget, QCheckBox
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..assets import get_app_icon_object
+from ...utils.network_utils import prepare_cookies_for_request
+# Corrected Import: Import CookieHelpDialog directly from its own module
+from .CookieHelpDialog import CookieHelpDialog
+from ...core.api_client import download_from_api
+
+
+class FavoritePostsFetcherThread (QThread ):
+    """Worker thread to fetch favorite posts and creator names."""
+    status_update =pyqtSignal (str )
+    progress_bar_update =pyqtSignal (int ,int )
+    finished =pyqtSignal (list ,str )
+
+    def __init__ (self ,cookies_config ,parent_logger_func ,target_domain_preference =None ):
+        super ().__init__ ()
+        self .cookies_config =cookies_config 
+        self .parent_logger_func =parent_logger_func 
+        self .target_domain_preference =target_domain_preference 
+        self .cancellation_event =threading .Event ()
+        self .error_key_map ={
+        "Kemono.su":"kemono_su",
+        "Coomer.su":"coomer_su"
+        }
+
+    def _logger (self ,message ):
+        self .parent_logger_func (f"[FavPostsFetcherThread] {message }")
+
+    def run (self ):
+        kemono_fav_posts_url ="https://kemono.su/api/v1/account/favorites?type=post"
+        coomer_fav_posts_url ="https://coomer.su/api/v1/account/favorites?type=post"
+
+        all_fetched_posts_temp =[]
+        error_messages_for_summary =[]
+        fetched_any_successfully =False 
+        any_cookies_loaded_successfully_for_any_source =False 
+
+        self .status_update .emit ("key_fetching_fav_post_list_init")
+        self .progress_bar_update .emit (0 ,0 )
+
+        api_sources =[
+        {"name":"Kemono.su","url":kemono_fav_posts_url ,"domain":"kemono.su"},
+        {"name":"Coomer.su","url":coomer_fav_posts_url ,"domain":"coomer.su"}
+        ]
+
+        api_sources_to_try =[]
+        if self .target_domain_preference :
+            self ._logger (f"Targeting specific domain for favorites: {self .target_domain_preference }")
+            for source_def in api_sources :
+                if source_def ["domain"]==self .target_domain_preference :
+                    api_sources_to_try .append (source_def )
+                    break 
+            if not api_sources_to_try :
+                self ._logger (f"Warning: Preferred domain '{self .target_domain_preference }' not a recognized API source. Fetching from all.")
+                api_sources_to_try =api_sources 
+        else :
+            self ._logger ("No specific domain preference, or both domains have cookies. Will attempt to fetch from all sources.")
+            api_sources_to_try =api_sources 
+
+        for source in api_sources_to_try :
+            if self .cancellation_event .is_set ():
+                self .finished .emit ([],"KEY_FETCH_CANCELLED_DURING")
+                return 
+            cookies_dict_for_source =None 
+            if self .cookies_config ['use_cookie']:
+                cookies_dict_for_source =prepare_cookies_for_request (
+                True ,
+                self .cookies_config ['cookie_text'],
+                self .cookies_config ['selected_cookie_file'],
+                self .cookies_config ['app_base_dir'],
+                self ._logger ,
+                target_domain =source ['domain']
+                )
+                if cookies_dict_for_source :
+                    any_cookies_loaded_successfully_for_any_source =True 
+                else :
+                    self ._logger (f"Warning ({source ['name']}): Cookies enabled but could not be loaded for this domain. Fetch might fail if cookies are required.")
+
+            self ._logger (f"Attempting to fetch favorite posts from: {source ['name']} ({source ['url']})")
+            source_key_part =self .error_key_map .get (source ['name'],source ['name'].lower ().replace ('.','_'))
+            self .status_update .emit (f"key_fetching_from_source_{source_key_part }")
+            QCoreApplication .processEvents ()
+
+            try :
+                headers ={'User-Agent':'Mozilla/5.0'}
+                response =requests .get (source ['url'],headers =headers ,cookies =cookies_dict_for_source ,timeout =20 )
+                response .raise_for_status ()
+                posts_data_from_api =response .json ()
+
+                if not isinstance (posts_data_from_api ,list ):
+                    err_detail =f"Error ({source ['name']}): API did not return a list of posts (got {type (posts_data_from_api )})."
+                    self ._logger (err_detail )
+                    error_messages_for_summary .append (err_detail )
+                    continue 
+
+                processed_posts_from_source =0 
+                for post_entry in posts_data_from_api :
+                    post_id =post_entry .get ("id")
+                    post_title =html .unescape (post_entry .get ("title","Untitled Post").strip ())
+                    service =post_entry .get ("service")
+                    creator_id =post_entry .get ("user")
+                    added_date_str =post_entry .get ("added",post_entry .get ("published",""))
+
+                    if post_id and post_title and service and creator_id :
+                        all_fetched_posts_temp .append ({
+                        'post_id':post_id ,'title':post_title ,'service':service ,
+                        'creator_id':creator_id ,'added_date':added_date_str ,
+                        '_source_api':source ['name']
+                        })
+                        processed_posts_from_source +=1 
+                    else :
+                        self ._logger (f"Warning ({source ['name']}): Skipping favorite post entry due to missing data: {post_entry }")
+
+                if processed_posts_from_source >0 :
+                    fetched_any_successfully =True 
+                self ._logger (f"Fetched {processed_posts_from_source } posts from {source ['name']}.")
+
+            except requests .exceptions .RequestException as e :
+                err_detail =f"Error fetching favorite posts from {source ['name']}: {e }"
+                self ._logger (err_detail )
+                error_messages_for_summary .append (err_detail )
+                if e .response is not None and e .response .status_code ==401 :
+                    self .finished .emit ([],"KEY_AUTH_FAILED")
+                    self ._logger (f"Authorization failed for {source ['name']}, emitting KEY_AUTH_FAILED.")
+                    return 
+            except Exception as e :
+                err_detail =f"An unexpected error occurred with {source ['name']}: {e }"
+                self ._logger (err_detail )
+                error_messages_for_summary .append (err_detail )
+
+        if self .cancellation_event .is_set ():
+            self .finished .emit ([],"KEY_FETCH_CANCELLED_AFTER")
+            return 
+
+
+        if self .cookies_config ['use_cookie']and not any_cookies_loaded_successfully_for_any_source :
+
+            if self .target_domain_preference and not any_cookies_loaded_successfully_for_any_source :
+
+                 domain_key_part =self .error_key_map .get (self .target_domain_preference ,self .target_domain_preference .lower ().replace ('.','_'))
+                 self .finished .emit ([],f"KEY_COOKIES_REQUIRED_BUT_NOT_FOUND_FOR_DOMAIN_{domain_key_part }")
+                 return 
+
+
+            self .finished .emit ([],"KEY_COOKIES_REQUIRED_BUT_NOT_FOUND_GENERIC")
+            return 
+
+        unique_posts_map ={}
+        for post in all_fetched_posts_temp :
+            key =(post ['service'].lower (),str (post ['creator_id']).lower (),str (post ['post_id']).lower ())
+            if key not in unique_posts_map :
+                unique_posts_map [key ]=post 
+        all_fetched_posts_temp =list (unique_posts_map .values ())
+
+        all_fetched_posts_temp .sort (key =lambda x :(x .get ('_source_api','').lower (),x .get ('service','').lower (),str (x .get ('creator_id','')).lower (),(x .get ('added_date')or '')),reverse =False )
+
+        if error_messages_for_summary :
+            error_summary_str ="; ".join (error_messages_for_summary )
+            if not fetched_any_successfully :
+                self .finished .emit ([],f"KEY_FETCH_FAILED_GENERIC_{error_summary_str [:50 ]}")
+            else :
+                 self .finished .emit (all_fetched_posts_temp ,f"KEY_FETCH_PARTIAL_SUCCESS_{error_summary_str [:50 ]}")
+        elif not all_fetched_posts_temp and not fetched_any_successfully and not self .target_domain_preference :
+            self .finished .emit ([],"KEY_NO_FAVORITES_FOUND_ALL_PLATFORMS")
+        else :
+            self .finished .emit (all_fetched_posts_temp ,"KEY_FETCH_SUCCESS")
+
+class PostListItemWidget (QWidget ):
+    """Custom widget for displaying a single post in the FavoritePostsDialog list."""
+    def __init__ (self ,post_data_dict ,parent_dialog_ref ,parent =None ):
+        super ().__init__ (parent )
+        self .post_data =post_data_dict 
+        self .parent_dialog =parent_dialog_ref 
+
+        self .layout =QHBoxLayout (self )
+        self .layout .setContentsMargins (5 ,3 ,5 ,3 )
+        self .layout .setSpacing (10 )
+
+        self .checkbox =QCheckBox ()
+        self .layout .addWidget (self .checkbox )
+
+        self .info_label =QLabel ()
+        self .info_label .setWordWrap (True )
+        self .info_label .setTextFormat (Qt .RichText )
+        self .layout .addWidget (self .info_label ,1 )
+
+        self ._setup_display_text ()
+    def _setup_display_text (self ):
+        suffix_plain =self .post_data .get ('suffix_for_display',"")
+        title_plain =self .post_data .get ('title','Untitled Post')
+        escaped_suffix =html .escape (suffix_plain )
+        escaped_title =html .escape (title_plain )
+        p_style_paragraph ="font-size:10.5pt; margin:0; padding:0;"
+        title_span_style ="font-weight:bold; color:#E0E0E0;"
+        suffix_span_style ="color:#999999; font-weight:normal; font-size:9.5pt;"
+
+        if escaped_suffix :
+            display_html_content =f"<p style='{p_style_paragraph }'><span style='{title_span_style }'>{escaped_title }</span><span style='{suffix_span_style }'>{escaped_suffix }</span></p>"
+        else :
+            display_html_content =f"<p style='{p_style_paragraph }'><span style='{title_span_style }'>{escaped_title }</span></p>"
+
+        self .info_label .setText (display_html_content )
+
+    def isChecked (self ):return self .checkbox .isChecked ()
+    def setCheckState (self ,state ):self .checkbox .setCheckState (state )
+    def get_post_data (self ):return self .post_data 
+
+class FavoritePostsDialog (QDialog ):
+    """Dialog to display and select favorite posts."""
+    def __init__ (self ,parent_app ,cookies_config ,known_names_list_ref ,target_domain_preference =None ):
+        super ().__init__ (parent_app )
+        self .parent_app =parent_app 
+        self .cookies_config =cookies_config 
+        self .all_fetched_posts =[]
+        self .selected_posts_data =[]
+        self .known_names_list_ref =known_names_list_ref 
+        self .target_domain_preference_for_this_fetch =target_domain_preference 
+        self .creator_name_cache ={}
+        self .displayable_grouped_posts ={}
+        self .fetcher_thread =None 
+
+        app_icon =get_app_icon_object ()
+        if not app_icon .isNull ():
+            self .setWindowIcon (app_icon )
+
+        self .setModal (True )
+        self .setMinimumSize (600 ,600 )
+        if hasattr (self .parent_app ,'get_dark_theme'):
+            self .setStyleSheet (self .parent_app .get_dark_theme ())
+
+        self ._init_ui ()
+        self ._load_creator_names_from_file ()
+        self ._retranslate_ui ()
+        self ._start_fetching_favorite_posts ()
+
+    def _update_status_label_from_key (self ,status_key ):
+        """Translates a status key and updates the status label."""
+
+        translated_status =self ._tr (status_key .lower (),status_key )
+        self .status_label .setText (translated_status )
+
+    def _init_ui (self ):
+        main_layout =QVBoxLayout (self )
+
+        self .status_label =QLabel ()
+        self .status_label .setAlignment (Qt .AlignCenter )
+        main_layout .addWidget (self .status_label )
+
+        self .progress_bar =QProgressBar ()
+        self .progress_bar .setTextVisible (False )
+        self .progress_bar .setVisible (False )
+        main_layout .addWidget (self .progress_bar )
+
+        self .search_input =QLineEdit ()
+
+        self .search_input .textChanged .connect (self ._filter_post_list_display )
+        main_layout .addWidget (self .search_input )
+
+        self .post_list_widget =QListWidget ()
+        self .post_list_widget .setStyleSheet ("""
+            QListWidget::item {
+                border-bottom: 1px solid #4A4A4A;
+                padding-top: 4px;
+                padding-bottom: 4px;
+            }""")
+        self .post_list_widget .setAlternatingRowColors (True )
+        main_layout .addWidget (self .post_list_widget )
+
+        combined_buttons_layout =QHBoxLayout ()
+        self .select_all_button =QPushButton ()
+        self .select_all_button .clicked .connect (self ._select_all_items )
+        combined_buttons_layout .addWidget (self .select_all_button )
+
+        self .deselect_all_button =QPushButton ()
+        self .deselect_all_button .clicked .connect (self ._deselect_all_items )
+        combined_buttons_layout .addWidget (self .deselect_all_button )
+
+        self .download_button =QPushButton ()
+        self .download_button .clicked .connect (self ._accept_selection_action )
+        self .download_button .setEnabled (False )
+        self .download_button .setDefault (True )
+        combined_buttons_layout .addWidget (self .download_button )
+
+        self .cancel_button =QPushButton ()
+        self .cancel_button .clicked .connect (self .reject )
+        combined_buttons_layout .addWidget (self .cancel_button )
+        combined_buttons_layout .addStretch (1 )
+        main_layout .addLayout (combined_buttons_layout )
+
+    def _tr (self ,key ,default_text =""):
+        """Helper to get translation based on current app language."""
+        if callable (get_translation )and self .parent_app :
+            return get_translation (self .parent_app .current_selected_language ,key ,default_text )
+        return default_text 
+
+    def _retranslate_ui (self ):
+        self .setWindowTitle (self ._tr ("fav_posts_dialog_title","Favorite Posts"))
+        self .status_label .setText (self ._tr ("fav_posts_loading_status","Loading favorite posts..."))
+        self .search_input .setPlaceholderText (self ._tr ("fav_posts_search_placeholder","Search posts (title, creator name, ID, service)..."))
+        self .select_all_button .setText (self ._tr ("fav_posts_select_all_button","Select All"))
+        self .deselect_all_button .setText (self ._tr ("fav_posts_deselect_all_button","Deselect All"))
+        self .download_button .setText (self ._tr ("fav_posts_download_selected_button","Download Selected"))
+        self .cancel_button .setText (self ._tr ("fav_posts_cancel_button","Cancel"))
+
+    def _logger (self ,message ):
+        if hasattr (self .parent_app ,'log_signal')and self .parent_app .log_signal :
+            self .parent_app .log_signal .emit (f"[FavPostsDialog] {message }")
+        else :
+            print (f"[FavPostsDialog] {message }")
+
+    def _load_creator_names_from_file (self ):
+        """Loads creator id-name-service mappings from creators.txt."""
+        self ._logger ("Attempting to load creators.json for Favorite Posts Dialog.")
+         
+        if getattr (sys ,'frozen',False )and hasattr (sys ,'_MEIPASS'):
+            base_path_for_creators =sys ._MEIPASS 
+            self ._logger (f"  Running bundled. Using _MEIPASS: {base_path_for_creators }")
+        else :
+            base_path_for_creators =self .parent_app .app_base_dir 
+            self ._logger (f"  Not bundled or _MEIPASS unavailable. Using app_base_dir: {base_path_for_creators }")
+        creators_file_path = os.path.join(base_path_for_creators, "data", "creators.json")
+        self ._logger (f"Full path to creators.json: {creators_file_path }")
+
+        if not os .path .exists (creators_file_path ):
+            self ._logger (f"Warning: 'creators.json' not found at {creators_file_path }. Creator names will not be displayed.")
+            return 
+
+        try :
+            with open (creators_file_path ,'r',encoding ='utf-8')as f :
+                loaded_data =json .load (f )
+
+                if isinstance (loaded_data ,list )and len (loaded_data )>0 and isinstance (loaded_data [0 ],list ):
+                    creators_list =loaded_data [0 ]
+                elif isinstance (loaded_data ,list )and all (isinstance (item ,dict )for item in loaded_data ):
+                    creators_list =loaded_data 
+                else :
+                    self ._logger (f"Warning: 'creators.json' has an unexpected format. Expected a list of lists or a flat list of creator objects.")
+                    return 
+
+                for creator_data in creators_list :
+                    creator_id =creator_data .get ("id")
+                    name =creator_data .get ("name")
+                    service =creator_data .get ("service")
+                    if creator_id and name and service :
+                        self .creator_name_cache [(service .lower (),str (creator_id ))]=name 
+            self ._logger (f"Successfully loaded {len (self .creator_name_cache )} creator names from 'creators.json'.")
+        except Exception as e :
+            self ._logger (f"Error loading 'creators.json': {e }")
+
+    def _start_fetching_favorite_posts (self ):
+        self .download_button .setEnabled (False )
+        self .status_label .setText ("Initializing favorite posts fetch...")
+
+        self .fetcher_thread =FavoritePostsFetcherThread (
+        self .cookies_config ,
+        self .parent_app .log_signal .emit ,
+        target_domain_preference =self .target_domain_preference_for_this_fetch 
+        )
+        self .fetcher_thread .status_update .connect (self ._update_status_label_from_key )
+        self .fetcher_thread .finished .connect (self ._on_fetch_completed )
+        self .fetcher_thread .progress_bar_update .connect (self ._set_progress_bar_value )
+        self .progress_bar .setVisible (True )
+        self .fetcher_thread .start ()
+
+    def _set_progress_bar_value (self ,value ,maximum ):
+        if maximum ==0 :
+            self .progress_bar .setRange (0 ,0 )
+            self .progress_bar .setValue (0 )
+        else :
+            self .progress_bar .setRange (0 ,maximum )
+            self .progress_bar .setValue (value )
+
+    def _on_fetch_completed (self ,fetched_posts_list ,status_key ):
+        self .progress_bar .setVisible (False )
+
+        proceed_to_display_posts =False 
+        show_error_message_box =False 
+        message_box_title_key ="fav_posts_fetch_error_title"
+        message_box_text_key ="fav_posts_fetch_error_message"
+        message_box_params ={'domain':self .target_domain_preference_for_this_fetch or "platform",'error_message_part':""}
+        status_label_text_key =None 
+
+        if status_key =="KEY_FETCH_SUCCESS":
+            proceed_to_display_posts =True 
+        elif status_key and status_key .startswith ("KEY_FETCH_PARTIAL_SUCCESS_")and fetched_posts_list :
+            displayable_detail =status_key .replace ("KEY_FETCH_PARTIAL_SUCCESS_","").replace ("_"," ")
+            self ._logger (f"Partial success with posts: {status_key } -> {displayable_detail }")
+
+
+            proceed_to_display_posts =True 
+        elif status_key :
+            specific_domain_msg_part =f" for {self .target_domain_preference_for_this_fetch }"if self .target_domain_preference_for_this_fetch else ""
+
+            if status_key .startswith ("KEY_COOKIES_REQUIRED_BUT_NOT_FOUND_FOR_DOMAIN_")or status_key =="KEY_COOKIES_REQUIRED_BUT_NOT_FOUND_GENERIC":
+                status_label_text_key ="fav_posts_cookies_required_error"
+                self ._logger (f"Cookie error: {status_key }. Showing help dialog.")
+                cookie_help_dialog =CookieHelpDialog (self )
+                cookie_help_dialog .exec_ ()
+            elif status_key =="KEY_AUTH_FAILED":
+                status_label_text_key ="fav_posts_auth_failed_title"
+                self ._logger (f"Auth error: {status_key }. Showing help dialog.")
+                QMessageBox .warning (self ,self ._tr ("fav_posts_auth_failed_title","Authorization Failed (Posts)"),
+                self ._tr ("fav_posts_auth_failed_message_generic","...").format (domain_specific_part =specific_domain_msg_part ))
+                cookie_help_dialog =CookieHelpDialog (self )
+                cookie_help_dialog .exec_ ()
+            elif status_key =="KEY_NO_FAVORITES_FOUND_ALL_PLATFORMS":
+                status_label_text_key ="fav_posts_no_posts_found_status"
+                self ._logger (status_key )
+            elif status_key .startswith ("KEY_FETCH_CANCELLED"):
+                status_label_text_key ="fav_posts_fetch_cancelled_status"
+                self ._logger (status_key )
+            else :
+                displayable_error_detail =status_key 
+                if status_key .startswith ("KEY_FETCH_FAILED_GENERIC_"):
+                    displayable_error_detail =status_key .replace ("KEY_FETCH_FAILED_GENERIC_","").replace ("_"," ")
+                elif status_key .startswith ("KEY_FETCH_PARTIAL_SUCCESS_"):
+                    displayable_error_detail =status_key .replace ("KEY_FETCH_PARTIAL_SUCCESS_","Partial success but no posts: ").replace ("_"," ")
+
+                message_box_params ['error_message_part']=f":\n\n{displayable_error_detail }"if displayable_error_detail else ""
+                status_label_text_key ="fav_posts_fetch_error_message"
+                show_error_message_box =True 
+                self ._logger (f"Fetch error: {status_key } -> {displayable_error_detail }")
+
+            if status_label_text_key :
+                 self .status_label .setText (self ._tr (status_label_text_key ,status_label_text_key ).format (**message_box_params ))
+            if show_error_message_box :
+                 QMessageBox .critical (self ,self ._tr (message_box_title_key ),self ._tr (message_box_text_key ).format (**message_box_params ))
+
+            self .download_button .setEnabled (False )
+            return 
+
+
+        if not proceed_to_display_posts :
+            if not status_label_text_key :
+                self .status_label .setText (self ._tr ("fav_posts_cookies_required_error","Error: Cookies are required for favorite posts but could not be loaded."))
+            self .download_button .setEnabled (False )
+            return 
+
+        if not self .creator_name_cache :
+            self ._logger ("Warning: Creator name cache is empty. Names will not be resolved from creators.json. Displaying IDs instead.")
+        else :
+            self ._logger (f"Creator name cache has {len (self .creator_name_cache )} entries. Attempting to resolve names...")
+            sample_keys =list (self .creator_name_cache .keys ())[:3 ]
+            if sample_keys :
+                self ._logger (f"Sample keys from creator_name_cache: {sample_keys }")
+
+
+        processed_one_missing_log =False 
+        for post_entry in fetched_posts_list :
+            service_from_post =post_entry .get ('service','')
+            creator_id_from_post =post_entry .get ('creator_id','')
+
+            lookup_key_service =service_from_post .lower ()
+            lookup_key_id =str (creator_id_from_post )
+            lookup_key_tuple =(lookup_key_service ,lookup_key_id )
+
+            resolved_name =self .creator_name_cache .get (lookup_key_tuple )
+
+            if resolved_name :
+                post_entry ['creator_name_resolved']=resolved_name 
+            else :
+                post_entry ['creator_name_resolved']=str (creator_id_from_post )
+                if not processed_one_missing_log and self .creator_name_cache :
+                    self ._logger (f"Debug: Name not found for key {lookup_key_tuple }. Using ID '{creator_id_from_post }'.")
+                    processed_one_missing_log =True 
+
+        self .all_fetched_posts =fetched_posts_list 
+
+        if not self .all_fetched_posts :
+            self .status_label .setText (self ._tr ("fav_posts_no_posts_found_status","No favorite posts found."))
+            self .download_button .setEnabled (False )
+            return 
+
+        try :
+            self ._populate_post_list_widget ()
+            self .status_label .setText (self ._tr ("fav_posts_found_status","{count} favorite post(s) found.").format (count =len (self .all_fetched_posts )))
+            self .download_button .setEnabled (True )
+        except Exception as e :
+            self .status_label .setText (self ._tr ("fav_posts_display_error_status","Error displaying posts: {error}").format (error =str (e )))
+            self ._logger (f"Error during _populate_post_list_widget: {e }\n{traceback .format_exc (limit =3 )}")
+            QMessageBox .critical (self ,self ._tr ("fav_posts_ui_error_title","UI Error"),self ._tr ("fav_posts_ui_error_message","Could not display favorite posts: {error}").format (error =str (e )))
+            self .download_button .setEnabled (False )
+
+
+    def _find_best_known_name_match_in_title (self ,title_raw ):
+        if not title_raw or not self .known_names_list_ref :
+            return None 
+
+        title_lower =title_raw .lower ()
+        best_match_known_name_primary =None 
+        longest_match_len =0 
+
+        for known_entry in self .known_names_list_ref :
+            aliases_to_check =set ()
+            for alias_val in known_entry .get ("aliases",[]):
+                aliases_to_check .add (alias_val )
+            if not known_entry .get ("is_group",False ):
+                aliases_to_check .add (known_entry ["name"])
+            sorted_aliases_for_entry =sorted (list (aliases_to_check ),key =len ,reverse =True )
+
+            for alias in sorted_aliases_for_entry :
+                alias_lower =alias .lower ()
+                if not alias_lower :
+                    continue 
+                if re .search (r'\b'+re .escape (alias_lower )+r'\b',title_lower ):
+                    if len (alias_lower )>longest_match_len :
+                        longest_match_len =len (alias_lower )
+                        best_match_known_name_primary =known_entry ["name"]
+                    break 
+        return best_match_known_name_primary 
+
+    def _populate_post_list_widget (self ,posts_to_display =None ):
+        self .post_list_widget .clear ()
+
+        source_list_for_grouping =posts_to_display if posts_to_display is not None else self .all_fetched_posts 
+        grouped_posts ={}
+        for post in source_list_for_grouping :
+            service =post .get ('service','unknown_service')
+            creator_id =post .get ('creator_id','unknown_id')
+            group_key =(service ,creator_id )
+            if group_key not in grouped_posts :
+                grouped_posts [group_key ]=[]
+            grouped_posts [group_key ].append (post )
+
+        sorted_group_keys =sorted (grouped_posts .keys (),key =lambda x :(x [0 ].lower (),x [1 ].lower ()))
+
+        self .displayable_grouped_posts ={
+        key :sorted (grouped_posts [key ],key =lambda p :(p .get ('added_date')or ''),reverse =True )
+        for key in sorted_group_keys 
+        }
+        for service ,creator_id_val in sorted_group_keys :
+            creator_name_display =self .creator_name_cache .get (
+            (service .lower (),str (creator_id_val )),
+            str (creator_id_val )
+            )
+            artist_header_display_text =f"{creator_name_display } ({service .capitalize ()} / {creator_id_val })"
+            artist_header_item =QListWidgetItem (f"🎨 {artist_header_display_text }")
+            artist_header_item .setFlags (Qt .NoItemFlags )
+            font =artist_header_item .font ()
+            font .setBold (True )
+            font .setPointSize (font .pointSize ()+1 )
+            artist_header_item .setFont (font )
+            artist_header_item .setForeground (Qt .cyan )
+            self .post_list_widget .addItem (artist_header_item )
+            for post_data in self .displayable_grouped_posts [(service ,creator_id_val )]:
+                post_title_raw =post_data .get ('title','Untitled Post')
+                found_known_name_primary =self ._find_best_known_name_match_in_title (post_title_raw )
+
+                plain_text_title_for_list_item =post_title_raw 
+                if found_known_name_primary :
+                    suffix_text =f" [Known - {found_known_name_primary }]"
+                    post_data ['suffix_for_display']=suffix_text 
+                    plain_text_title_for_list_item =post_title_raw +suffix_text 
+                else :
+                    post_data .pop ('suffix_for_display',None )
+
+                list_item =QListWidgetItem (self .post_list_widget )
+                list_item .setText (plain_text_title_for_list_item )
+                list_item .setFlags (list_item .flags ()|Qt .ItemIsUserCheckable )
+                list_item .setCheckState (Qt .Unchecked )
+                list_item .setData (Qt .UserRole ,post_data )
+                self .post_list_widget .addItem (list_item )
+
+    def _filter_post_list_display (self ):
+        search_text =self .search_input .text ().lower ().strip ()
+        if not search_text :
+            self ._populate_post_list_widget (self .all_fetched_posts )
+            return 
+
+        filtered_posts_to_group =[]
+        for post in self .all_fetched_posts :
+            matches_post_title =search_text in post .get ('title','').lower ()
+            matches_creator_name =search_text in post .get ('creator_name_resolved','').lower ()
+            matches_creator_id =search_text in post .get ('creator_id','').lower ()
+            matches_service =search_text in post ['service'].lower ()
+
+            if matches_post_title or matches_creator_name or matches_creator_id or matches_service :
+                filtered_posts_to_group .append (post )
+
+        self ._populate_post_list_widget (filtered_posts_to_group )
+
+    def _select_all_items (self ):
+        for i in range (self .post_list_widget .count ()):
+            item =self .post_list_widget .item (i )
+            if item and item .flags ()&Qt .ItemIsUserCheckable :
+                item .setCheckState (Qt .Checked )
+
+    def _deselect_all_items (self ):
+        for i in range (self .post_list_widget .count ()):
+            item =self .post_list_widget .item (i )
+            if item and item .flags ()&Qt .ItemIsUserCheckable :
+                item .setCheckState (Qt .Unchecked )
+
+    def _accept_selection_action (self ):
+        self .selected_posts_data =[]
+        for i in range (self .post_list_widget .count ()):
+            item =self .post_list_widget .item (i )
+            if item and item .checkState ()==Qt .Checked :
+                post_data_for_download =item .data (Qt .UserRole )
+                self .selected_posts_data .append (post_data_for_download )
+
+        if not self .selected_posts_data :
+            QMessageBox .information (self ,self ._tr ("fav_posts_no_selection_title","No Selection"),self ._tr ("fav_posts_no_selection_message","Please select at least one post to download."))
+            return 
+        self .accept ()
+
+    def get_selected_posts (self ):
+        return self .selected_posts_data 

src/ui/dialogs/FutureSettingsDialog.py

@@ -0,0 +1,202 @@
+# --- Standard Library Imports ---
+import os
+
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt, QStandardPaths
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QPushButton, QVBoxLayout,
+    QGroupBox, QComboBox, QMessageBox
+)
+
+# --- Local Application Imports ---
+# This assumes the new project structure is in place.
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+from ...config.constants import (
+    THEME_KEY, LANGUAGE_KEY, DOWNLOAD_LOCATION_KEY
+)
+
+
+class FutureSettingsDialog(QDialog):
+    """
+    A dialog for managing application-wide settings like theme, language,
+    and saving the default download path.
+    """
+    def __init__(self, parent_app_ref, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            parent_app_ref (DownloaderApp): A reference to the main application window.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app_ref
+        self.setModal(True)
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+        
+        # Set window size dynamically
+        screen_height = QApplication.primaryScreen().availableGeometry().height() if QApplication.primaryScreen() else 768
+        scale_factor = screen_height / 768.0
+        base_min_w, base_min_h = 380, 250
+        scaled_min_w = int(base_min_w * scale_factor)
+        scaled_min_h = int(base_min_h * scale_factor)
+        self.setMinimumSize(scaled_min_w, scaled_min_h)
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        layout = QVBoxLayout(self)
+
+        # --- Appearance Settings ---
+        self.appearance_group_box = QGroupBox()
+        appearance_layout = QVBoxLayout(self.appearance_group_box)
+        self.theme_toggle_button = QPushButton()
+        self.theme_toggle_button.clicked.connect(self._toggle_theme)
+        appearance_layout.addWidget(self.theme_toggle_button)
+        layout.addWidget(self.appearance_group_box)
+
+        # --- Language Settings ---
+        self.language_group_box = QGroupBox()
+        language_group_layout = QVBoxLayout(self.language_group_box)
+        self.language_selection_layout = QHBoxLayout()
+        self.language_label = QLabel()
+        self.language_selection_layout.addWidget(self.language_label)
+        self.language_combo_box = QComboBox()
+        self.language_combo_box.currentIndexChanged.connect(self._language_selection_changed)
+        self.language_selection_layout.addWidget(self.language_combo_box, 1)
+        language_group_layout.addLayout(self.language_selection_layout)
+        layout.addWidget(self.language_group_box)
+        
+        # --- Download Settings ---
+        self.download_settings_group_box = QGroupBox()
+        download_settings_layout = QVBoxLayout(self.download_settings_group_box)
+        self.save_path_button = QPushButton()
+        self.save_path_button.clicked.connect(self._save_download_path)
+        download_settings_layout.addWidget(self.save_path_button)
+        layout.addWidget(self.download_settings_group_box)
+
+        layout.addStretch(1)
+
+        # --- OK Button ---
+        self.ok_button = QPushButton()
+        self.ok_button.clicked.connect(self.accept)
+        layout.addWidget(self.ok_button, 0, Qt.AlignRight | Qt.AlignBottom)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("settings_dialog_title", "Settings"))
+        self.appearance_group_box.setTitle(self._tr("appearance_group_title", "Appearance"))
+        self.language_group_box.setTitle(self._tr("language_group_title", "Language Settings"))
+        self.download_settings_group_box.setTitle(self._tr("settings_download_group_title", "Download Settings"))
+        self.language_label.setText(self._tr("language_label", "Language:"))
+        self._update_theme_toggle_button_text()
+        self._populate_language_combo_box()
+        
+        self.save_path_button.setText(self._tr("settings_save_path_button", "Save Current Download Path"))
+        self.save_path_button.setToolTip(self._tr("settings_save_path_tooltip", "Save the current 'Download Location' for future sessions."))
+        self.ok_button.setText(self._tr("ok_button", "OK"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app.current_theme == "dark":
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+        else:
+            self.setStyleSheet("")
+
+    def _update_theme_toggle_button_text(self):
+        """Updates the theme button text and tooltip based on the current theme."""
+        if self.parent_app.current_theme == "dark":
+            self.theme_toggle_button.setText(self._tr("theme_toggle_light", "Switch to Light Mode"))
+            self.theme_toggle_button.setToolTip(self._tr("theme_tooltip_light", "Change the application appearance to light."))
+        else:
+            self.theme_toggle_button.setText(self._tr("theme_toggle_dark", "Switch to Dark Mode"))
+            self.theme_toggle_button.setToolTip(self._tr("theme_tooltip_dark", "Change the application appearance to dark."))
+
+    def _toggle_theme(self):
+        """Toggles the application theme and updates the UI."""
+        new_theme = "light" if self.parent_app.current_theme == "dark" else "dark"
+        self.parent_app.apply_theme(new_theme)
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _populate_language_combo_box(self):
+        """Populates the language dropdown with available languages."""
+        self.language_combo_box.blockSignals(True)
+        self.language_combo_box.clear()
+        languages = [
+        ("en","English"),
+        ("ja","日本語 (Japanese)"),
+        ("fr","Français (French)"),
+        ("de","Deutsch (German)"),
+        ("es","Español (Spanish)"),
+        ("pt","Português (Portuguese)"),
+        ("ru","Русский (Russian)"),
+        ("zh_CN","简体中文 (Simplified Chinese)"),
+        ("zh_TW","繁體中文 (Traditional Chinese)"),
+        ("ko","한국어 (Korean)")
+        ]
+        for lang_code, lang_name in languages:
+            self.language_combo_box.addItem(lang_name, lang_code)
+            if self.parent_app.current_selected_language == lang_code:
+                self.language_combo_box.setCurrentIndex(self.language_combo_box.count() - 1)
+        self.language_combo_box.blockSignals(False)
+
+    def _language_selection_changed(self, index):
+        """Handles the user selecting a new language."""
+        selected_lang_code = self.language_combo_box.itemData(index)
+        if selected_lang_code and selected_lang_code != self.parent_app.current_selected_language:
+            self.parent_app.current_selected_language = selected_lang_code
+            self.parent_app.settings.setValue(LANGUAGE_KEY, selected_lang_code)
+            self.parent_app.settings.sync()
+            
+            self._retranslate_ui()
+
+            msg_box = QMessageBox(self)
+            msg_box.setIcon(QMessageBox.Information)
+            msg_box.setWindowTitle(self._tr("language_change_title", "Language Changed"))
+            msg_box.setText(self._tr("language_change_message", "A restart is required..."))
+            msg_box.setInformativeText(self._tr("language_change_informative", "Would you like to restart now?"))
+            restart_button = msg_box.addButton(self._tr("restart_now_button", "Restart Now"), QMessageBox.ApplyRole)
+            ok_button = msg_box.addButton(self._tr("ok_button", "OK"), QMessageBox.AcceptRole)
+            msg_box.setDefaultButton(ok_button)
+            msg_box.exec_()
+
+            if msg_box.clickedButton() == restart_button:
+                self.parent_app._request_restart_application()
+
+    def _save_download_path(self):
+        """Saves the current download path from the main window to settings."""
+        if hasattr(self.parent_app, 'dir_input') and self.parent_app.dir_input:
+            current_path = self.parent_app.dir_input.text().strip()
+            if current_path:
+                if os.path.isdir(current_path):
+                    self.parent_app.settings.setValue(DOWNLOAD_LOCATION_KEY, current_path)
+                    self.parent_app.settings.sync()
+                    QMessageBox.information(self,
+                        self._tr("settings_save_path_success_title", "Path Saved"),
+                        self._tr("settings_save_path_success_message", "Download location '{path}' saved.").format(path=current_path))
+                else:
+                    QMessageBox.warning(self,
+                        self._tr("settings_save_path_invalid_title", "Invalid Path"),
+                        self._tr("settings_save_path_invalid_message", "The path '{path}' is not a valid directory.").format(path=current_path))
+            else:
+                QMessageBox.warning(self,
+                    self._tr("settings_save_path_empty_title", "Empty Path"),
+                    self._tr("settings_save_path_empty_message", "Download location cannot be empty."))
+        else:
+            QMessageBox.critical(self, "Error", "Could not access download path input from main application.")

src/ui/dialogs/HelpGuideDialog.py

@@ -0,0 +1,192 @@
+# --- Standard Library Imports ---
+import os
+import sys
+
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import QUrl, QSize, Qt
+from PyQt5.QtGui import QIcon
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QPushButton, QVBoxLayout,
+    QStackedWidget, QScrollArea, QFrame, QWidget
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+
+
+class TourStepWidget(QWidget):
+    """
+    A custom widget representing a single step or page in the feature guide.
+    It neatly formats a title and its corresponding content.
+    """
+    def __init__(self, title_text, content_text, parent=None):
+        super().__init__(parent)
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(20, 20, 20, 20)
+        layout.setSpacing(10)
+
+        title_label = QLabel(title_text)
+        title_label.setAlignment(Qt.AlignCenter)
+        title_label.setStyleSheet("font-size: 18px; font-weight: bold; color: #E0E0E0; padding-bottom: 15px;")
+        layout.addWidget(title_label)
+
+        scroll_area = QScrollArea()
+        scroll_area.setWidgetResizable(True)
+        scroll_area.setFrameShape(QFrame.NoFrame)
+        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
+        scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        scroll_area.setStyleSheet("background-color: transparent;")
+
+        content_label = QLabel(content_text)
+        content_label.setWordWrap(True)
+        content_label.setAlignment(Qt.AlignLeft | Qt.AlignTop)
+        content_label.setTextFormat(Qt.RichText)
+        content_label.setOpenExternalLinks(True) # Allow opening links in the content
+        content_label.setStyleSheet("font-size: 11pt; color: #C8C8C8; line-height: 1.8;")
+        scroll_area.setWidget(content_label)
+        layout.addWidget(scroll_area, 1)
+
+
+class HelpGuideDialog (QDialog ):
+    """A multi-page dialog for displaying the feature guide."""
+    def __init__ (self ,steps_data ,parent_app ,parent =None ):
+        super ().__init__ (parent )
+        self .current_step =0 
+        self .steps_data =steps_data 
+        self .parent_app =parent_app 
+
+        app_icon =get_app_icon_object ()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        self .setModal (True )
+        self .setFixedSize (650 ,600 )
+
+
+        current_theme_style =""
+        if hasattr (self .parent_app ,'current_theme')and self .parent_app .current_theme =="dark":
+            if hasattr (self .parent_app ,'get_dark_theme'):
+                current_theme_style =self .parent_app .get_dark_theme ()
+
+
+        self .setStyleSheet (current_theme_style if current_theme_style else """
+            QDialog { background-color: #2E2E2E; border: 1px solid #5A5A5A; }
+            QLabel { color: #E0E0E0; }
+            QPushButton { background-color: #555; color: #F0F0F0; border: 1px solid #6A6A6A; padding: 8px 15px; border-radius: 4px; min-height: 25px; font-size: 11pt; }
+            QPushButton:hover { background-color: #656565; }
+            QPushButton:pressed { background-color: #4A4A4A; }
+        """)
+        self ._init_ui ()
+        if self .parent_app :
+            self .move (self .parent_app .geometry ().center ()-self .rect ().center ())
+
+    def _tr (self ,key ,default_text =""):
+        """Helper to get translation based on current app language."""
+        if callable (get_translation )and self .parent_app :
+            return get_translation (self .parent_app .current_selected_language ,key ,default_text )
+        return default_text 
+
+
+    def _init_ui (self ):
+        main_layout =QVBoxLayout (self )
+        main_layout .setContentsMargins (0 ,0 ,0 ,0 )
+        main_layout .setSpacing (0 )
+
+        self .stacked_widget =QStackedWidget ()
+        main_layout .addWidget (self .stacked_widget ,1 )
+
+        self .tour_steps_widgets =[]
+        for title ,content in self .steps_data :
+            step_widget =TourStepWidget (title ,content )
+            self .tour_steps_widgets .append (step_widget )
+            self .stacked_widget .addWidget (step_widget )
+
+        self .setWindowTitle (self ._tr ("help_guide_dialog_title","Kemono Downloader - Feature Guide"))
+
+        buttons_layout =QHBoxLayout ()
+        buttons_layout .setContentsMargins (15 ,10 ,15 ,15 )
+        buttons_layout .setSpacing (10 )
+
+        self .back_button =QPushButton (self ._tr ("tour_dialog_back_button","Back"))
+        self .back_button .clicked .connect (self ._previous_step )
+        self .back_button .setEnabled (False )
+
+        if getattr (sys ,'frozen',False )and hasattr (sys ,'_MEIPASS'):
+            assets_base_dir =sys ._MEIPASS 
+        else :
+            # Go up three levels from this file's directory (src/ui/dialogs) to the project root
+            assets_base_dir =os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..'))
+
+        github_icon_path =os .path .join (assets_base_dir ,"assets","github.png")
+        instagram_icon_path =os .path .join (assets_base_dir ,"assets","instagram.png")
+        discord_icon_path =os .path .join (assets_base_dir ,"assets","discord.png")
+
+        self .github_button =QPushButton (QIcon (github_icon_path ),"")
+        self .instagram_button =QPushButton (QIcon (instagram_icon_path ),"")
+        self .Discord_button =QPushButton (QIcon (discord_icon_path ),"")
+
+        icon_size =QSize (24 ,24 )
+        self .github_button .setIconSize (icon_size )
+        self .instagram_button .setIconSize (icon_size )
+        self .Discord_button .setIconSize (icon_size )
+
+        self .next_button =QPushButton (self ._tr ("tour_dialog_next_button","Next"))
+        self .next_button .clicked .connect (self ._next_step_action )
+        self .next_button .setDefault (True )
+        self .github_button .clicked .connect (self ._open_github_link )
+        self .instagram_button .clicked .connect (self ._open_instagram_link )
+        self .Discord_button .clicked .connect (self ._open_Discord_link )
+        self .github_button .setToolTip (self ._tr ("help_guide_github_tooltip","Visit project's GitHub page (Opens in browser)"))
+        self .instagram_button .setToolTip (self ._tr ("help_guide_instagram_tooltip","Visit our Instagram page (Opens in browser)"))
+        self .Discord_button .setToolTip (self ._tr ("help_guide_discord_tooltip","Visit our Discord community (Opens in browser)"))
+
+
+        social_layout =QHBoxLayout ()
+        social_layout .setSpacing (10 )
+        social_layout .addWidget (self .github_button )
+        social_layout .addWidget (self .instagram_button )
+        social_layout .addWidget (self .Discord_button )
+
+        while buttons_layout .count ():
+            item =buttons_layout .takeAt (0 )
+            if item .widget ():
+                item .widget ().setParent (None )
+            elif item .layout ():
+                pass 
+        buttons_layout .addLayout (social_layout )
+        buttons_layout .addStretch (1 )
+        buttons_layout .addWidget (self .back_button )
+        buttons_layout .addWidget (self .next_button )
+        main_layout .addLayout (buttons_layout )
+        self ._update_button_states ()
+
+    def _next_step_action (self ):
+        if self .current_step <len (self .tour_steps_widgets )-1 :
+            self .current_step +=1 
+            self .stacked_widget .setCurrentIndex (self .current_step )
+        else :
+            self .accept ()
+        self ._update_button_states ()
+
+    def _previous_step (self ):
+        if self .current_step >0 :
+            self .current_step -=1 
+            self .stacked_widget .setCurrentIndex (self .current_step )
+        self ._update_button_states ()
+
+    def _update_button_states (self ):
+        if self .current_step ==len (self .tour_steps_widgets )-1 :
+            self .next_button .setText (self ._tr ("tour_dialog_finish_button","Finish"))
+        else :
+            self .next_button .setText (self ._tr ("tour_dialog_next_button","Next"))
+        self .back_button .setEnabled (self .current_step >0 )
+
+    def _open_github_link (self ):
+        QDesktopServices .openUrl (QUrl ("https://github.com/Yuvi9587"))
+
+    def _open_instagram_link (self ):
+        QDesktopServices .openUrl (QUrl ("https://www.instagram.com/uvi.arts/"))
+
+    def _open_Discord_link (self ):
+        QDesktopServices .openUrl (QUrl ("https://discord.gg/BqP64XTdJN"))

src/ui/dialogs/KnownNamesFilterDialog.py

@@ -0,0 +1,150 @@
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QLineEdit, QListWidget,
+    QListWidgetItem, QPushButton, QVBoxLayout
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+
+
+class KnownNamesFilterDialog(QDialog):
+    """
+    A dialog to select names from the Known.txt list to add to the main
+    character filter input field. This provides a convenient way for users
+
+    to reuse their saved names and groups for filtering downloads.
+    """
+
+    def __init__(self, known_names_list, parent_app_ref, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            known_names_list (list): A list of known name objects (dicts) from Known.txt.
+            parent_app_ref (DownloaderApp): A reference to the main application window.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.parent_app = parent_app_ref
+        self.setModal(True)
+        self.all_known_name_entries = sorted(known_names_list, key=lambda x: x['name'].lower())
+        self.selected_entries_to_return = []
+
+        # --- Basic Window Setup ---
+        app_icon = get_app_icon_object()
+        if app_icon and not app_icon.isNull():
+            self.setWindowIcon(app_icon)
+
+        # Set window size dynamically
+        screen_geometry = QApplication.primaryScreen().availableGeometry()
+        base_width, base_height = 460, 450
+        scale_factor_h = screen_geometry.height() / 1080.0
+        effective_scale_factor = max(0.75, min(scale_factor_h, 1.5))
+        self.setMinimumSize(int(base_width * effective_scale_factor), int(base_height * effective_scale_factor))
+        self.resize(int(base_width * effective_scale_factor * 1.1), int(base_height * effective_scale_factor * 1.1))
+
+        # --- Initialize UI and Apply Theming ---
+        self._init_ui()
+        self._retranslate_ui()
+        self._apply_theme()
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts for the dialog."""
+        main_layout = QVBoxLayout(self)
+
+        self.search_input = QLineEdit()
+        self.search_input.textChanged.connect(self._filter_list_display)
+        main_layout.addWidget(self.search_input)
+
+        self.names_list_widget = QListWidget()
+        self._populate_list_widget()
+        main_layout.addWidget(self.names_list_widget)
+
+        # --- Control Buttons ---
+        buttons_layout = QHBoxLayout()
+
+        self.select_all_button = QPushButton()
+        self.select_all_button.clicked.connect(self._select_all_items)
+        buttons_layout.addWidget(self.select_all_button)
+
+        self.deselect_all_button = QPushButton()
+        self.deselect_all_button.clicked.connect(self._deselect_all_items)
+        buttons_layout.addWidget(self.deselect_all_button)
+        buttons_layout.addStretch(1)
+
+        self.add_button = QPushButton()
+        self.add_button.clicked.connect(self._accept_selection_action)
+        self.add_button.setDefault(True)
+        buttons_layout.addWidget(self.add_button)
+
+        self.cancel_button = QPushButton()
+        self.cancel_button.clicked.connect(self.reject)
+        buttons_layout.addWidget(self.cancel_button)
+        main_layout.addLayout(buttons_layout)
+
+    def _tr(self, key, default_text=""):
+        """Helper to get translation based on the main application's current language."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _retranslate_ui(self):
+        """Sets the text for all translatable UI elements."""
+        self.setWindowTitle(self._tr("known_names_filter_dialog_title", "Add Known Names to Filter"))
+        self.search_input.setPlaceholderText(self._tr("known_names_filter_search_placeholder", "Search names..."))
+        self.select_all_button.setText(self._tr("known_names_filter_select_all_button", "Select All"))
+        self.deselect_all_button.setText(self._tr("known_names_filter_deselect_all_button", "Deselect All"))
+        self.add_button.setText(self._tr("known_names_filter_add_selected_button", "Add Selected"))
+        self.cancel_button.setText(self._tr("fav_posts_cancel_button", "Cancel"))
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'get_dark_theme') and self.parent_app.current_theme == "dark":
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+
+    def _populate_list_widget(self):
+        """Populates the list widget with the known names."""
+        self.names_list_widget.clear()
+        for entry_obj in self.all_known_name_entries:
+            item = QListWidgetItem(entry_obj['name'])
+            item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
+            item.setCheckState(Qt.Unchecked)
+            item.setData(Qt.UserRole, entry_obj)
+            self.names_list_widget.addItem(item)
+
+    def _filter_list_display(self):
+        """Filters the displayed list based on the search input text."""
+        search_text_lower = self.search_input.text().lower()
+        for i in range(self.names_list_widget.count()):
+            item = self.names_list_widget.item(i)
+            entry_obj = item.data(Qt.UserRole)
+            matches_search = not search_text_lower or search_text_lower in entry_obj['name'].lower()
+            item.setHidden(not matches_search)
+
+    def _select_all_items(self):
+        """Checks all visible items in the list widget."""
+        for i in range(self.names_list_widget.count()):
+            item = self.names_list_widget.item(i)
+            if not item.isHidden():
+                item.setCheckState(Qt.Checked)
+
+    def _deselect_all_items(self):
+        """Unchecks all items in the list widget."""
+        for i in range(self.names_list_widget.count()):
+            self.names_list_widget.item(i).setCheckState(Qt.Unchecked)
+
+    def _accept_selection_action(self):
+        """Gathers the selected entries and accepts the dialog."""
+        self.selected_entries_to_return = []
+        for i in range(self.names_list_widget.count()):
+            item = self.names_list_widget.item(i)
+            if item.checkState() == Qt.Checked:
+                self.selected_entries_to_return.append(item.data(Qt.UserRole))
+        self.accept()
+
+    def get_selected_entries(self):
+        """Returns the list of known name entries selected by the user."""
+        return self.selected_entries_to_return

src/ui/dialogs/TourDialog.py

@@ -0,0 +1,217 @@
+# --- Standard Library Imports ---
+import os
+import sys
+
+# --- PyQt5 Imports ---
+from PyQt5.QtCore import pyqtSignal, Qt, QSettings, QCoreApplication
+from PyQt5.QtWidgets import (
+    QApplication, QDialog, QHBoxLayout, QLabel, QPushButton, QVBoxLayout,
+    QStackedWidget, QScrollArea, QFrame, QWidget, QCheckBox
+)
+
+# --- Local Application Imports ---
+from ...i18n.translator import get_translation
+from ..main_window import get_app_icon_object
+from ...config.constants import (
+    CONFIG_ORGANIZATION_NAME
+)
+
+
+class TourStepWidget(QWidget):
+    """
+    A custom widget representing a single step or page in the feature tour.
+    It neatly formats a title and its corresponding content.
+    """
+    def __init__(self, title_text, content_text, parent=None):
+        super().__init__(parent)
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(20, 20, 20, 20)
+        layout.setSpacing(10)
+
+        title_label = QLabel(title_text)
+        title_label.setAlignment(Qt.AlignCenter)
+        title_label.setStyleSheet("font-size: 18px; font-weight: bold; color: #E0E0E0; padding-bottom: 15px;")
+        layout.addWidget(title_label)
+
+        scroll_area = QScrollArea()
+        scroll_area.setWidgetResizable(True)
+        scroll_area.setFrameShape(QFrame.NoFrame)
+        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
+        scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        scroll_area.setStyleSheet("background-color: transparent;")
+
+        content_label = QLabel(content_text)
+        content_label.setWordWrap(True)
+        content_label.setAlignment(Qt.AlignLeft | Qt.AlignTop)
+        content_label.setTextFormat(Qt.RichText)
+        content_label.setOpenExternalLinks(True)
+        content_label.setStyleSheet("font-size: 11pt; color: #C8C8C8; line-height: 1.8;")
+        scroll_area.setWidget(content_label)
+        layout.addWidget(scroll_area, 1)
+
+
+class TourDialog(QDialog):
+    """
+    A dialog that shows a multi-page tour to the user on first launch.
+    Includes a "Never show again" checkbox and uses QSettings to remember this preference.
+    """
+    tour_finished_normally = pyqtSignal()
+    tour_skipped = pyqtSignal()
+
+    # Constants for QSettings
+    CONFIG_APP_NAME_TOUR = "ApplicationTour"
+    TOUR_SHOWN_KEY = "neverShowTourAgainV19"
+
+    def __init__(self, parent_app, parent=None):
+        """
+        Initializes the dialog.
+
+        Args:
+            parent_app (DownloaderApp): A reference to the main application window.
+            parent (QWidget, optional): The parent widget. Defaults to None.
+        """
+        super().__init__(parent)
+        self.settings = QSettings(CONFIG_ORGANIZATION_NAME, self.CONFIG_APP_NAME_TOUR)
+        self.current_step = 0
+        self.parent_app = parent_app
+
+        self.setWindowIcon(get_app_icon_object())
+        self.setModal(True)
+        self.setFixedSize(600, 620)
+        
+        self._init_ui()
+        self._apply_theme()
+        self._center_on_screen()
+
+    def _tr(self, key, default_text=""):
+        """Helper for translation."""
+        if callable(get_translation) and self.parent_app:
+            return get_translation(self.parent_app.current_selected_language, key, default_text)
+        return default_text
+
+    def _init_ui(self):
+        """Initializes all UI components and layouts."""
+        main_layout = QVBoxLayout(self)
+        main_layout.setContentsMargins(0, 0, 0, 0)
+        main_layout.setSpacing(0)
+
+        self.stacked_widget = QStackedWidget()
+        main_layout.addWidget(self.stacked_widget, 1)
+
+        # Load content for each step
+        steps_content = [
+            ("tour_dialog_step1_title", "tour_dialog_step1_content"),
+            ("tour_dialog_step2_title", "tour_dialog_step2_content"),
+            ("tour_dialog_step3_title", "tour_dialog_step3_content"),
+            ("tour_dialog_step4_title", "tour_dialog_step4_content"),
+            ("tour_dialog_step5_title", "tour_dialog_step5_content"),
+            ("tour_dialog_step6_title", "tour_dialog_step6_content"),
+            ("tour_dialog_step7_title", "tour_dialog_step7_content"),
+            ("tour_dialog_step8_title", "tour_dialog_step8_content"),
+        ]
+
+        self.tour_steps_widgets = []
+        for title_key, content_key in steps_content:
+            title = self._tr(title_key, title_key)
+            content = self._tr(content_key, "Content not found.")
+            step_widget = TourStepWidget(title, content)
+            self.tour_steps_widgets.append(step_widget)
+            self.stacked_widget.addWidget(step_widget)
+
+        self.setWindowTitle(self._tr("tour_dialog_title", "Welcome to Kemono Downloader!"))
+
+        # --- Bottom Controls ---
+        bottom_controls_layout = QVBoxLayout()
+        bottom_controls_layout.setContentsMargins(15, 10, 15, 15)
+        bottom_controls_layout.setSpacing(12)
+
+        self.never_show_again_checkbox = QCheckBox(self._tr("tour_dialog_never_show_checkbox", "Never show this tour again"))
+        bottom_controls_layout.addWidget(self.never_show_again_checkbox, 0, Qt.AlignLeft)
+
+        buttons_layout = QHBoxLayout()
+        buttons_layout.setSpacing(10)
+        self.skip_button = QPushButton(self._tr("tour_dialog_skip_button", "Skip Tour"))
+        self.skip_button.clicked.connect(self._skip_tour_action)
+        self.back_button = QPushButton(self._tr("tour_dialog_back_button", "Back"))
+        self.back_button.clicked.connect(self._previous_step)
+        self.next_button = QPushButton(self._tr("tour_dialog_next_button", "Next"))
+        self.next_button.clicked.connect(self._next_step_action)
+        self.next_button.setDefault(True)
+
+        buttons_layout.addWidget(self.skip_button)
+        buttons_layout.addStretch(1)
+        buttons_layout.addWidget(self.back_button)
+        buttons_layout.addWidget(self.next_button)
+
+        bottom_controls_layout.addLayout(buttons_layout)
+        main_layout.addLayout(bottom_controls_layout)
+
+        self._update_button_states()
+
+    def _apply_theme(self):
+        """Applies the current theme from the parent application."""
+        if self.parent_app and hasattr(self.parent_app, 'get_dark_theme') and self.parent_app.current_theme == "dark":
+            self.setStyleSheet(self.parent_app.get_dark_theme())
+        else:
+            self.setStyleSheet("QDialog { background-color: #f0f0f0; }")
+
+    def _center_on_screen(self):
+        """Centers the dialog on the screen."""
+        try:
+            screen_geo = QApplication.primaryScreen().availableGeometry()
+            self.move(screen_geo.center() - self.rect().center())
+        except Exception as e:
+            print(f"[TourDialog] Error centering dialog: {e}")
+
+    def _next_step_action(self):
+        """Moves to the next step or finishes the tour."""
+        if self.current_step < len(self.tour_steps_widgets) - 1:
+            self.current_step += 1
+            self.stacked_widget.setCurrentIndex(self.current_step)
+        else:
+            self._finish_tour_action()
+        self._update_button_states()
+
+    def _previous_step(self):
+        """Moves to the previous step."""
+        if self.current_step > 0:
+            self.current_step -= 1
+            self.stacked_widget.setCurrentIndex(self.current_step)
+        self._update_button_states()
+
+    def _update_button_states(self):
+        """Updates the state and text of navigation buttons."""
+        is_last_step = self.current_step == len(self.tour_steps_widgets) - 1
+        self.next_button.setText(self._tr("tour_dialog_finish_button", "Finish") if is_last_step else self._tr("tour_dialog_next_button", "Next"))
+        self.back_button.setEnabled(self.current_step > 0)
+
+    def _skip_tour_action(self):
+        """Handles the action when the tour is skipped."""
+        self._save_settings_if_checked()
+        self.tour_skipped.emit()
+        self.reject()
+
+    def _finish_tour_action(self):
+        """Handles the action when the tour is finished normally."""
+        self._save_settings_if_checked()
+        self.tour_finished_normally.emit()
+        self.accept()
+
+    def _save_settings_if_checked(self):
+        """Saves the 'never show again' preference to QSettings."""
+        self.settings.setValue(self.TOUR_SHOWN_KEY, self.never_show_again_checkbox.isChecked())
+        self.settings.sync()
+
+    @staticmethod
+    def should_show_tour():
+        """Checks QSettings to see if the tour should be shown on startup."""
+        settings = QSettings(TourDialog.CONFIG_ORGANIZATION_NAME, TourDialog.CONFIG_APP_NAME_TOUR)
+        never_show = settings.value(TourDialog.TOUR_SHOWN_KEY, False, type=bool)
+        return not never_show
+
+    CONFIG_ORGANIZATION_NAME = CONFIG_ORGANIZATION_NAME
+
+    def closeEvent(self, event):
+        """Ensures settings are saved if the dialog is closed via the 'X' button."""
+        self._skip_tour_action()
+        super().closeEvent(event)

src/ui/dialogs/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/utils/__init__.py

@@ -0,0 +1 @@
+# ...existing code...

src/utils/file_utils.py

@@ -0,0 +1,142 @@
+# --- Standard Library Imports ---
+import os
+import re
+
+# --- Module Constants ---
+
+# This will be populated at runtime by the main application,
+# but is defined here as it's conceptually related to file/folder naming.
+KNOWN_NAMES = []
+
+MAX_FILENAME_COMPONENT_LENGTH = 150
+
+# Sets of file extensions for quick type checking
+IMAGE_EXTENSIONS = {
+    '.jpg', '.jpeg', '.png', '.gif', '.bmp', '.tiff', '.tif', '.webp',
+    '.heic', '.heif', '.svg', '.ico', '.jfif', '.pjpeg', '.pjp', '.avif'
+}
+VIDEO_EXTENSIONS = {
+    '.mp4', '.mov', '.mkv', '.webm', '.avi', '.wmv', '.flv', '.mpeg',
+    '.mpg', '.m4v', '.3gp', '.ogv', '.ts', '.vob'
+}
+ARCHIVE_EXTENSIONS = {
+    '.zip', '.rar', '.7z', '.tar', '.gz', '.bz2'
+}
+AUDIO_EXTENSIONS = {
+    '.mp3', '.wav', '.aac', '.flac', '.ogg', '.wma', '.m4a', '.opus',
+    '.aiff', '.ape', '.mid', '.midi'
+}
+
+# Words to ignore when trying to generate a folder name from a title
+FOLDER_NAME_STOP_WORDS = {
+    "a", "alone", "am", "an", "and", "at", "be", "blues", "but", "by", "com",
+    "for", "grown", "hard", "he", "her", "his", "hitting", "i", "im", "in", "is", "it", "its",
+    "me", "much", "my", "net", "not", "of", "on", "or", "org", "our", "please",
+    "right", "s", "she", "so", "technically", "tell", "the", "their", "they", "this",
+    "to", "ve", "was", "we", "well", "were", "with", "www", "year", "you", "your",
+}
+
+# --- File and Folder Name Utilities ---
+
+def clean_folder_name(name):
+    """
+    Sanitizes a string to make it a valid folder name.
+    Removes invalid characters and trims whitespace.
+
+    Args:
+        name (str): The input string.
+
+    Returns:
+        str: A sanitized, valid folder name.
+    """
+    if not isinstance(name, str):
+        name = str(name)
+    
+    # Remove characters that are invalid in folder names on most OS
+    cleaned = re.sub(r'[<>:"/\\|?*]', '', name)
+    cleaned = cleaned.strip()
+    
+    # Replace multiple spaces with a single space
+    cleaned = re.sub(r'\s+', ' ', cleaned)
+
+    # If after cleaning the name is empty, provide a default
+    if not cleaned:
+        return "untitled_folder"
+
+    # Truncate to a reasonable length
+    if len(cleaned) > MAX_FILENAME_COMPONENT_LENGTH:
+        cleaned = cleaned[:MAX_FILENAME_COMPONENT_LENGTH]
+
+    # Remove trailing dots or spaces, which can be problematic
+    cleaned = cleaned.rstrip('. ')
+
+    return cleaned if cleaned else "untitled_folder"
+
+
+def clean_filename(name):
+    """
+    Sanitizes a string to make it a valid file name.
+
+    Args:
+        name (str): The input string.
+
+    Returns:
+        str: A sanitized, valid file name.
+    """
+    if not isinstance(name, str):
+        name = str(name)
+        
+    cleaned = re.sub(r'[<>:"/\\|?*]', '_', name)
+    cleaned = cleaned.strip()
+    
+    if not cleaned:
+        return "untitled_file"
+        
+    base_name, ext = os.path.splitext(cleaned)
+    max_base_len = MAX_FILENAME_COMPONENT_LENGTH - len(ext)
+
+    if len(base_name) > max_base_len:
+        if max_base_len > 0:
+            base_name = base_name[:max_base_len]
+        else:
+            # Handle cases where the extension itself is too long
+            return cleaned[:MAX_FILENAME_COMPONENT_LENGTH]
+    
+    return base_name + ext
+
+
+# --- File Type Identification Functions ---
+
+def is_image(filename):
+    """Checks if a filename has a common image extension."""
+    if not filename: return False
+    _, ext = os.path.splitext(filename)
+    return ext.lower() in IMAGE_EXTENSIONS
+
+def is_video(filename):
+    """Checks if a filename has a common video extension."""
+    if not filename: return False
+    _, ext = os.path.splitext(filename)
+    return ext.lower() in VIDEO_EXTENSIONS
+
+def is_zip(filename):
+    """Checks if a filename is a .zip file."""
+    if not filename: return False
+    return filename.lower().endswith('.zip')
+
+def is_rar(filename):
+    """Checks if a filename is a .rar file."""
+    if not filename: return False
+    return filename.lower().endswith('.rar')
+
+def is_archive(filename):
+    """Checks if a filename has a common archive extension."""
+    if not filename: return False
+    _, ext = os.path.splitext(filename)
+    return ext.lower() in ARCHIVE_EXTENSIONS
+
+def is_audio(filename):
+    """Checks if a filename has a common audio extension."""
+    if not filename: return False
+    _, ext = os.path.splitext(filename)
+    return ext.lower() in AUDIO_EXTENSIONS

src/utils/network_utils.py

@@ -0,0 +1,208 @@
+# --- Standard Library Imports ---
+import os
+import re
+from urllib.parse import urlparse
+
+# --- Third-Party Library Imports ---
+# This module might not require third-party libraries directly,
+# but 'requests' is a common dependency for network operations.
+# import requests
+
+
+def parse_cookie_string(cookie_string):
+    """
+    Parses a 'name=value; name2=value2' cookie string into a dictionary.
+
+    Args:
+        cookie_string (str): The cookie string from browser tools.
+
+    Returns:
+        dict or None: A dictionary of cookie names and values, or None if empty.
+    """
+    cookies = {}
+    if cookie_string:
+        for item in cookie_string.split(';'):
+            parts = item.split('=', 1)
+            if len(parts) == 2:
+                name = parts[0].strip()
+                value = parts[1].strip()
+                if name:
+                    cookies[name] = value
+    return cookies if cookies else None
+
+
+def load_cookies_from_netscape_file(filepath, logger_func, target_domain_filter=None):
+    """
+    Loads cookies from a Netscape-formatted cookies.txt file.
+
+    If a target_domain_filter is provided, only cookies for that domain
+    (or its subdomains) are returned.
+
+    Args:
+        filepath (str): The full path to the cookies.txt file.
+        logger_func (callable): Function to use for logging.
+        target_domain_filter (str, optional): The domain to filter cookies for.
+
+    Returns:
+        dict or None: A dictionary of cookie names and values, or None if none are loaded.
+    """
+    cookies = {}
+    try:
+        with open(filepath, 'r', encoding='utf-8') as f:
+            for line in f:
+                line = line.strip()
+                if not line or line.startswith('#'):
+                    continue
+                
+                parts = line.split('\t')
+                if len(parts) == 7:
+                    cookie_domain = parts[0]
+                    name = parts[5]
+                    value = parts[6]
+
+                    if not name:
+                        continue
+
+                    if target_domain_filter:
+                        # Match domain exactly or as a subdomain
+                        host_to_match = target_domain_filter.lower()
+                        cookie_domain_norm = cookie_domain.lower()
+                        if (cookie_domain_norm.startswith('.') and host_to_match.endswith(cookie_domain_norm)) or \
+                           (host_to_match == cookie_domain_norm):
+                            cookies[name] = value
+                    else:
+                        cookies[name] = value
+
+        logger_func(f"   🍪 Loaded {len(cookies)} cookies from '{os.path.basename(filepath)}' for domain '{target_domain_filter or 'any'}'.")
+        return cookies if cookies else None
+    except FileNotFoundError:
+        logger_func(f"   🍪 Cookie file '{os.path.basename(filepath)}' not found.")
+        return None
+    except Exception as e:
+        logger_func(f"   🍪 Error parsing cookie file '{os.path.basename(filepath)}': {e}")
+        return None
+
+
+def prepare_cookies_for_request(use_cookie_flag, cookie_text_input, selected_cookie_file_path, app_base_dir, logger_func, target_domain=None):
+    """
+    Prepares a cookie dictionary from various sources based on user settings.
+    Priority:
+    1. UI-selected file path.
+    2. Domain-specific file in the app directory.
+    3. Default `cookies.txt` in the app directory.
+    4. Manually entered cookie text.
+
+    Args:
+        use_cookie_flag (bool): Whether cookies are enabled in the UI.
+        cookie_text_input (str): The raw text from the cookie input field.
+        selected_cookie_file_path (str): The path to a user-browsed cookie file.
+        app_base_dir (str): The base directory of the application.
+        logger_func (callable): Function for logging.
+        target_domain (str, optional): The domain for which cookies are needed.
+
+    Returns:
+        dict or None: A dictionary of cookies for the request, or None.
+    """
+    if not use_cookie_flag:
+        return None
+
+    # Priority 1: Use the specifically browsed file first
+    if selected_cookie_file_path and os.path.exists(selected_cookie_file_path):
+        cookies = load_cookies_from_netscape_file(selected_cookie_file_path, logger_func, target_domain)
+        if cookies:
+            return cookies
+
+    # Priority 2: Look for a domain-specific cookie file
+    if app_base_dir and target_domain:
+        domain_specific_path = os.path.join(app_base_dir, "data", f"{target_domain}_cookies.txt")
+        if os.path.exists(domain_specific_path):
+            cookies = load_cookies_from_netscape_file(domain_specific_path, logger_func, target_domain)
+            if cookies:
+                return cookies
+
+    # Priority 3: Look for a generic cookies.txt
+    if app_base_dir:
+        default_path = os.path.join(app_base_dir, "appdata", "cookies.txt")
+        if os.path.exists(default_path):
+            cookies = load_cookies_from_netscape_file(default_path, logger_func, target_domain)
+            if cookies:
+                return cookies
+
+    # Priority 4: Fall back to manually entered text
+    if cookie_text_input:
+        cookies = parse_cookie_string(cookie_text_input)
+        if cookies:
+            return cookies
+
+    logger_func(f"   🍪 Cookie usage enabled for '{target_domain or 'any'}', but no valid cookies found.")
+    return None
+
+
+def extract_post_info(url_string):
+    """
+    Parses a URL string to extract the service, user ID, and post ID.
+
+    Args:
+        url_string (str): The URL to parse.
+
+    Returns:
+        tuple: A tuple containing (service, user_id, post_id). Any can be None.
+    """
+    if not isinstance(url_string, str) or not url_string.strip():
+        return None, None, None
+    
+    try:
+        parsed_url = urlparse(url_string.strip())
+        path_parts = [part for part in parsed_url.path.strip('/').split('/') if part]
+        
+        # Standard format: /<service>/user/<user_id>/post/<post_id>
+        if len(path_parts) >= 3 and path_parts[1].lower() == 'user':
+            service = path_parts[0]
+            user_id = path_parts[2]
+            post_id = path_parts[4] if len(path_parts) >= 5 and path_parts[3].lower() == 'post' else None
+            return service, user_id, post_id
+            
+        # API format: /api/v1/<service>/user/<user_id>...
+        if len(path_parts) >= 5 and path_parts[0:2] == ['api', 'v1'] and path_parts[3].lower() == 'user':
+            service = path_parts[2]
+            user_id = path_parts[4]
+            post_id = path_parts[6] if len(path_parts) >= 7 and path_parts[5].lower() == 'post' else None
+            return service, user_id, post_id
+
+    except Exception as e:
+        print(f"Debug: Exception during URL parsing for '{url_string}': {e}")
+
+    return None, None, None
+
+
+def get_link_platform(url):
+    """
+    Identifies the platform of a given URL based on its domain.
+
+    Args:
+        url (str): The URL to identify.
+
+    Returns:
+        str: The name of the platform (e.g., 'mega', 'google drive') or 'external'.
+    """
+    try:
+        domain = urlparse(url).netloc.lower()
+        if 'drive.google.com' in domain: return 'google drive'
+        if 'mega.nz' in domain or 'mega.io' in domain: return 'mega'
+        if 'dropbox.com' in domain: return 'dropbox'
+        if 'patreon.com' in domain: return 'patreon'
+        if 'gofile.io' in domain: return 'gofile'
+        if 'instagram.com' in domain: return 'instagram'
+        if 'twitter.com' in domain or 'x.com' in domain: return 'twitter/x'
+        if 'discord.gg' in domain or 'discord.com/invite' in domain: return 'discord invite'
+        if 'pixiv.net' in domain: return 'pixiv'
+        if 'kemono.su' in domain or 'kemono.party' in domain: return 'kemono'
+        if 'coomer.su' in domain or 'coomer.party' in domain: return 'coomer'
+        
+        # Fallback to a generic name for other domains
+        parts = domain.split('.')
+        if len(parts) >= 2:
+            return parts[-2]
+        return 'external'
+    except Exception:
+        return 'unknown'

src/utils/text_utils.py

@@ -0,0 +1,207 @@
+# --- Standard Library Imports ---
+import re
+import html
+
+# --- Local Application Imports ---
+# Import from file_utils within the same package
+from .file_utils import clean_folder_name, FOLDER_NAME_STOP_WORDS
+
+# --- Module Constants ---
+
+# Regular expression patterns for cleaning up titles before matching against Known.txt
+KNOWN_TXT_MATCH_CLEANUP_PATTERNS = [
+    r'\bcum\b',
+    r'\bnsfw\b',
+    r'\bsfw\b',
+    r'\bweb\b',
+    r'\bhd\b',
+    r'\bhi\s*res\b',
+    r'\bhigh\s*res\b',
+    r'\b\d+p\b',
+    r'\b\d+k\b',
+    r'\[OC\]',
+    r'\[Request(?:s)?\]',
+    r'\bCommission\b',
+    r'\bComm\b',
+    r'\bPreview\b',
+]
+
+# --- Text Matching and Manipulation Utilities ---
+
+def is_title_match_for_character(post_title, character_name_filter):
+    """
+    Checks if a post title contains a specific character name as a whole word.
+    Case-insensitive.
+
+    Args:
+        post_title (str): The title of the post.
+        character_name_filter (str): The character name to search for.
+
+    Returns:
+        bool: True if the name is found as a whole word, False otherwise.
+    """
+    if not post_title or not character_name_filter:
+        return False
+        
+    # Use word boundaries (\b) to match whole words only
+    pattern = r"(?i)\b" + re.escape(str(character_name_filter).strip()) + r"\b"
+    return bool(re.search(pattern, post_title))
+
+
+def is_filename_match_for_character(filename, character_name_filter):
+    """
+    Checks if a filename contains a character name. This is a simple substring check.
+    Case-insensitive.
+
+    Args:
+        filename (str): The name of the file.
+        character_name_filter (str): The character name to search for.
+
+    Returns:
+        bool: True if the substring is found, False otherwise.
+    """
+    if not filename or not character_name_filter:
+        return False
+        
+    return str(character_name_filter).strip().lower() in filename.lower()
+
+
+def strip_html_tags(html_text):
+    """
+    Removes HTML tags from a string and cleans up resulting whitespace.
+
+    Args:
+        html_text (str): The input string containing HTML.
+
+    Returns:
+        str: The text with HTML tags removed.
+    """
+    if not html_text:
+        return ""
+    # First, unescape HTML entities like & -> &
+    text = html.unescape(str(html_text))
+    # Remove all tags
+    text_after_tag_removal = re.sub(r'<[^>]+>', ' ', text)
+    # Replace multiple whitespace characters with a single space
+    cleaned_text = re.sub(r'\s+', ' ', text_after_tag_removal).strip()
+    return cleaned_text
+
+
+def extract_folder_name_from_title(title, unwanted_keywords):
+    """
+    Extracts a plausible folder name from a post title by finding the first
+    significant word that isn't a stop-word.
+
+    Args:
+        title (str): The post title.
+        unwanted_keywords (set): A set of words to ignore.
+
+    Returns:
+        str: The extracted folder name, or 'Uncategorized'.
+    """
+    if not title:
+        return 'Uncategorized'
+        
+    title_lower = title.lower()
+    # Find all whole words in the title
+    tokens = re.findall(r'\b[\w\-]+\b', title_lower)
+    
+    for token in tokens:
+        clean_token = clean_folder_name(token)
+        if clean_token and clean_token.lower() not in unwanted_keywords:
+            return clean_token
+            
+    # Fallback to cleaning the full title if no single significant word is found
+    cleaned_full_title = clean_folder_name(title)
+    return cleaned_full_title if cleaned_full_title else 'Uncategorized'
+
+
+def match_folders_from_title(title, names_to_match, unwanted_keywords):
+    """
+    Matches folder names from a title based on a list of known name objects.
+    Each name object is a dict: {'name': 'PrimaryName', 'aliases': ['alias1', ...]}
+
+    Args:
+        title (str): The post title to check.
+        names_to_match (list): A list of known name dictionaries.
+        unwanted_keywords (set): A set of folder names to ignore.
+
+    Returns:
+        list: A sorted list of matched primary folder names.
+    """
+    if not title or not names_to_match:
+        return []
+
+    # Clean the title by removing common tags like [OC], [HD], etc.
+    cleaned_title = title
+    for pat_str in KNOWN_TXT_MATCH_CLEANUP_PATTERNS:
+        cleaned_title = re.sub(pat_str, ' ', cleaned_title, flags=re.IGNORECASE)
+    cleaned_title = re.sub(r'\s+', ' ', cleaned_title).strip()
+    title_lower = cleaned_title.lower()
+
+    matched_cleaned_names = set()
+    
+    # Sort by name length descending to match longer names first (e.g., "Cloud Strife" before "Cloud")
+    sorted_name_objects = sorted(names_to_match, key=lambda x: len(x.get("name", "")), reverse=True)
+
+    for name_obj in sorted_name_objects:
+        primary_folder_name = name_obj.get("name")
+        aliases = name_obj.get("aliases", [])
+        if not primary_folder_name or not aliases:
+            continue
+            
+        for alias in aliases:
+            alias_lower = alias.lower()
+            if not alias_lower: continue
+            
+            # Use word boundaries for accurate matching
+            pattern = r'\b' + re.escape(alias_lower) + r'\b'
+            if re.search(pattern, title_lower):
+                cleaned_primary_name = clean_folder_name(primary_folder_name)
+                if cleaned_primary_name.lower() not in unwanted_keywords:
+                    matched_cleaned_names.add(cleaned_primary_name)
+                    break # Move to the next name object once a match is found for this one
+                    
+    return sorted(list(matched_cleaned_names))
+
+
+def match_folders_from_filename_enhanced(filename, names_to_match, unwanted_keywords):
+    """
+    Matches folder names from a filename, prioritizing longer and more specific aliases.
+
+    Args:
+        filename (str): The filename to check.
+        names_to_match (list): A list of known name dictionaries.
+        unwanted_keywords (set): A set of folder names to ignore.
+
+    Returns:
+        list: A sorted list of matched primary folder names.
+    """
+    if not filename or not names_to_match:
+        return []
+
+    filename_lower = filename.lower()
+    matched_primary_names = set()
+
+    # Create a flat list of (alias, primary_name) tuples to sort by alias length
+    alias_map_to_primary = []
+    for name_obj in names_to_match:
+        primary_name = name_obj.get("name")
+        if not primary_name: continue
+        
+        cleaned_primary_name = clean_folder_name(primary_name)
+        if not cleaned_primary_name or cleaned_primary_name.lower() in unwanted_keywords:
+            continue
+
+        for alias in name_obj.get("aliases", []):
+            if alias.lower():
+                alias_map_to_primary.append((alias.lower(), cleaned_primary_name))
+    
+    # Sort by alias length, descending, to match longer aliases first
+    alias_map_to_primary.sort(key=lambda x: len(x[0]), reverse=True)
+
+    for alias_lower, primary_name_for_alias in alias_map_to_primary:
+        if filename_lower.startswith(alias_lower):
+            matched_primary_names.add(primary_name_for_alias)
+
+    return sorted(list(matched_primary_names))