fixes #185

fixes #179
fixes #180
fixes #181
fixes #182

.github/workflows/package.yml

@@ -0,0 +1,55 @@
+name: Package
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+        settings-path: ${{ github.workspace }} # location for the settings.xml file
+
+    - name: Build with Maven
+      run: mvn -B install --file pom.xml
+
+    - name: Rename GUI artifact
+      run: mv vripper-gui/target/vripper-gui-*.jar vripper-gui/target/vripper-gui.jar
+
+    - name: Rename WEB artifact
+      run: mv vripper-web/target/vripper-web-*.jar vripper-web/target/vripper-web.jar
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Package Linux binaries
+      run: |
+        cd jpackage
+        cp ../vripper-gui/target/vripper-gui.jar jar/vripper-gui.jar
+        jpackage --type deb "@jpackage.cfg" "@jpackage-linux.cfg"
+        jpackage --type rpm "@jpackage.cfg" "@jpackage-linux.cfg"
+        ls -la dist
+
+    - if: matrix.os == 'windows-latest'
+      name: Package Windows binaries
+      run: |
+        cd jpackage
+        cp ../vripper-gui/target/vripper-gui.jar jar/vripper-gui.jar
+        jpackage "@jpackage.cfg" "@jpackage-windows.cfg"
+        dir dist
+
+    - if: matrix.os == 'macos-latest'
+      name: Package macOS binaries
+      run: |
+        cd jpackage
+        cp ../vripper-gui/target/vripper-gui.jar jar/vripper-gui.jar
+        jpackage "@jpackage.cfg" "@jpackage-macos.cfg"
+        ls -la dist

.github/workflows/release.yml

@@ -0,0 +1,147 @@
+name: Release
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up JDK 21
+      uses: actions/setup-java@v3
+      with:
+        java-version: '21'
+        distribution: 'temurin'
+        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+        settings-path: ${{ github.workspace }} # location for the settings.xml file
+
+    - name: Build parent project
+      run: mvn -N -q install --file pom.xml
+
+    - name: Build Core Jar
+      run: mvn -B -q install --file vripper-core/pom.xml
+
+    - name: Build GUI Jar
+      run: mvn -B -q install --file vripper-gui/pom.xml
+
+    - name: Rename GUI Jar
+      run: mv vripper-gui/target/vripper-gui-${{ github.event.release.tag_name }}-jar-with-dependencies.jar vripper-gui/target/vripper-noarch-gui-${{ github.event.release.tag_name }}.jar
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Release GUI Jar
+      uses: softprops/action-gh-release@v1
+      with:
+        files: vripper-gui/target/vripper-noarch-gui-${{ github.event.release.tag_name }}.jar
+
+    # Start building WEB jar in ubuntu only
+    - if: matrix.os == 'ubuntu-latest'
+      name: Build WEB Jar
+      run: |
+        mvn -B -q install --file vripper-web-ui/pom.xml
+        mvn -B -q install --file vripper-web/pom.xml
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Rename WEB Jar
+      run: mv vripper-web/target/vripper-web-${{ github.event.release.tag_name }}.jar vripper-web/target/vripper-noarch-web-${{ github.event.release.tag_name }}.jar
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Release WEB Jar
+      uses: softprops/action-gh-release@v1
+      with:
+        files: vripper-web/target/vripper-noarch-web-${{ github.event.release.tag_name }}.jar
+    # End building WEB jar in ubuntu only
+
+    - name: Prepare Packaging
+      run: |
+        cp vripper-gui/target/vripper-noarch-gui-${{ github.event.release.tag_name }}.jar jpackage/jar/vripper-gui.jar
+        
+    - if: matrix.os == 'ubuntu-latest'
+      name: Package Linux
+      run: |
+        cd jpackage
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-app-image.cfg" --icon icon.png
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-linux.cfg" --type deb
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-linux.cfg" --type rpm
+        mv dist/vripper-${{ github.event.release.tag_name }}-1.x86_64.rpm dist/vripper-linux-${{ github.event.release.tag_name }}.x86_64.rpm
+        mv dist/vripper_${{ github.event.release.tag_name }}-1_amd64.deb dist/vripper-linux-${{ github.event.release.tag_name }}_amd64.deb
+
+    - if: matrix.os == 'windows-latest'
+      name: Package Windows
+      run: |
+        cd jpackage
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-app-image.cfg" --icon icon.ico
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-windows.cfg" --type msi
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-windows.cfg" --type exe
+        cd dist
+        ren VRipper-${{ github.event.release.tag_name }}.msi vripper-windows-installer-${{ github.event.release.tag_name }}.msi
+        ren VRipper-${{ github.event.release.tag_name }}.exe vripper-windows-installer-${{ github.event.release.tag_name }}.exe
+
+    - if: matrix.os == 'macos-latest'
+      name: Package macOS
+      run: |
+        cd jpackage
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-app-image.cfg" --icon icon.icns
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-macos.cfg" --type pkg
+        jpackage --app-version ${{ github.event.release.tag_name }} "@jpackage.cfg" "@jpackage-macos.cfg" --type dmg
+        mv dist/VRipper-${{ github.event.release.tag_name }}.pkg dist/vripper-macos-${{ github.event.release.tag_name }}.pkg
+        mv dist/VRipper-${{ github.event.release.tag_name }}.dmg dist/vripper-macos-${{ github.event.release.tag_name }}.dmg
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Zip Ubuntu portable
+      uses: thedoctor0/zip-release@0.7.1
+      with:
+        type: 'zip'
+        directory: 'jpackage/dist'
+        path: 'VRipper'
+        filename: 'vripper-linux-portable-${{ github.event.release.tag_name }}.zip'
+
+    - if: matrix.os == 'windows-latest'
+      name: Zip Windows portable
+      uses: thedoctor0/zip-release@0.7.1
+      with:
+        type: 'zip'
+        directory: 'jpackage/dist'
+        path: 'VRipper'
+        filename: 'vripper-windows-portable-${{ github.event.release.tag_name }}.zip'
+
+    - if: matrix.os == 'macos-latest'
+      name: Zip MacOS portable
+      uses: thedoctor0/zip-release@0.7.1
+      with:
+        type: 'zip'
+        directory: 'jpackage/dist'
+        path: 'VRipper.app'
+        filename: 'vripper-macos-portable-${{ github.event.release.tag_name }}.zip'
+
+    - if: matrix.os == 'ubuntu-latest'
+      name: Release packages for Linux
+      uses: softprops/action-gh-release@v1
+      with:
+        files: |
+          jpackage/dist/vripper-linux-${{ github.event.release.tag_name }}.x86_64.rpm
+          jpackage/dist/vripper-linux-${{ github.event.release.tag_name }}_amd64.deb
+          jpackage/dist/vripper-linux-portable-${{ github.event.release.tag_name }}.zip
+
+    - if: matrix.os == 'windows-latest'
+      name: Release packages for Windows
+      uses: softprops/action-gh-release@v1
+      with:
+        files: |
+          jpackage/dist/vripper-windows-installer-${{ github.event.release.tag_name }}.msi
+          jpackage/dist/vripper-windows-installer-${{ github.event.release.tag_name }}.exe
+          jpackage/dist/vripper-windows-portable-${{ github.event.release.tag_name }}.zip
+
+    - if: matrix.os == 'macos-latest'
+      name: Release packages for macOS
+      uses: softprops/action-gh-release@v1
+      with:
+        files: |
+          jpackage/dist/vripper-macos-${{ github.event.release.tag_name }}.pkg
+          jpackage/dist/vripper-macos-${{ github.event.release.tag_name }}.dmg
+          jpackage/dist/vripper-macos-portable-${{ github.event.release.tag_name }}.zip

.gitignore

@@ -2,4 +2,6 @@
 /**/*/node_modules
 /**/*/target
 /**/*/build-dir
-.idea
+/**/*/java-runtime
+.idea
+.vripper

CHANGELOG.md

@@ -1,125 +0,0 @@
-# Changelog
-
-## [1.6.3] - 2019-09-18
-### Changed
-- Better multithread management
-- Fix partial state UI
-
-## [1.6.2] - 2019-09-17
-### Changed
-- Rework UI colors
-- Fix scan input bug
-
-## [1.6.1] - 2019-09-16
-### Changed
-- Rework UI
-- Fix clipboard monitoring
-
-## [1.6.0] - 2019-09-15
-### Changed
-- Rework the UI
-- Add a dark theme
-- Fix the force ordering bug
-- Other bug fixes
-
-## [1.5.2] - 2019-09-01
-### Added
-- imx.to host fix
-
-## [1.5.1] - 2019-08-24
-### Added
-- Bug fixes
-
-## [1.5.0] - 2019-08-24
-### Added
-- Display logged in user
-- Add post details when clicking on main list items (Status, Post URL, Host)
-- Add open download location on main list items menu
-- Add support for multi-post threads (Show a menu to select posts to download)
-- Add link to image from details list
-
-## [1.4.10] - 2019-08-15
-### Changed
-- Fix a rename issue on windows
-
-## [1.4.9] - 2019-08-13
-### Changed
-- Update Built-By to be generic
-
-## [1.4.8] - 2019-08-13
-### Changed
-- Add option to force image ordering
-
-## [1.4.7] - 2019-08-13
-### Changed
-- Fixed a bug in image filename extensions 
-
-## [1.4.6] - 2019-08-06
-### Changed
-- Fixed a bug when creating image file names
-- Remove unnecessary logs
-- Fix data.json init 
-
-## [1.4.5] - 2019-08-03
-### Changed
-- Add min width and height for electron app
-### Added
-- Add download speed to status bar
-
-## [1.4.4] - 2019-08-01
-### Changed
-- Fix names for ImgboxHost
-- Enhance UI
-- Minor fixes
-### Added
-- Add start and stop button
-
-## [1.4.3] - 2019-07-14
-### Changed
-- Update some messages
-- Fix scrolling issue
-
-## [1.4.2] - 2019-07-14
-### Changed
-- Fix layout issue in web mode
-
-## [1.4.1] - 2019-07-14
-### Changed
-- Change title's font
-### Added
-- Add borders
-
-## [1.4.0] - 2019-07-14
-### Changed
-- Better error handling on startup
-- Better support for linux AppImage
-### Added
-- Clear all completed
-- Add clipboard support
-- Add option to remove all posts
-- Add confirmation on remove
-
-## [1.3.0-rc0] - 2019-07-04
-### Changed
-- Change default setting for autostart false -> true
-- Change default setting for max concurrent downloads 1 -> 4
-### Added
-- Desktop app built with electron
-- Add the option to remove a post
-
-## [1.2.0] - 2019-06-23
-### Added
-- Add a shutdown button to gracefully shutdown the app
-- Open and redirect the browser to the app address on startup
-- Add the option to run the app in headless mode (-Djava.awt.headless=true)
-
-## [1.1.1] - 2019-06-22
-### Changed
-- Fix a stability issue with progress updates when the app is runninh for a long time
-
-## [1.0.0] - 2019-06-22
-### Added
-- Add real time communication for progress updates via websocket (SockJS)
-- Add settings for download path, max concurrent download, enable/disable integration with vipergirls
-- Add integration with vipergitls.to (possibility to auto leave thanks after grab post)
-- Add support for acidimg.cc, imagezilla.net, imgbox.com, imx.to, pixhost.to, turboimagehost.com

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
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README.md

@@ -1,26 +1,71 @@
-# Viper Ripper!
+# VRipper!
+
+This is my spin for a cross-platform gallery ripper for [vipergirls.to](https://vipergirls.to).
+
+
+![GitHub Image](/image.png)
+
+
+## Requirements
+Direct access to vipergirls.to (or one of its [alternative domains](https://vipergirls.to/threads/5887340)), consider using a VPN otherwise.
+
+## Installing VRipper
+
+<img src="https://github.com/stashapp/stash/raw/develop/docs/readme_assets/windows_logo.svg" width="100%" height="75"> Windows | <img src="https://github.com/stashapp/stash/raw/develop/docs/readme_assets/mac_logo.svg" width="100%" height="75"> macOS | <img src="https://github.com/stashapp/stash/raw/develop/docs/readme_assets/linux_logo.svg" width="100%" height="75"> Linux  | <img src="https://images.vexels.com/media/users/3/166401/isolated/preview/b82aa7ac3f736dd78570dd3fa3fa9e24-java-programming-language-icon-by-vexels.png" width="100%" height="75"> Java
+:---:|:---:|:---:|:---:
+[Installer (EXE)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-windows-installer-5.5.0.exe) <br /> [Installer (MSI)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-windows-installer-5.5.0.msi) <br /> [Portable (ZIP)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-windows-portable-5.5.0.zip) | [Installer (DMG)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-macos-5.5.0.dmg) <br /> [Installer (PKG)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-macos-5.5.0.pkg) <br /> [Portable (ZIP)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-macos-portable-5.5.0.zip)  | [Linux (amd64) (DEB)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-linux-5.5.0_amd64.deb) <br /> [Linux (x86_64) (RPM)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-linux-5.5.0.x86_64.rpm) <br /> [Portable (ZIP)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-linux-portable-5.5.0.zip) | [Java GUI (noarch)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-noarch-gui-5.5.0.jar) <br /> [Java Web (noarch)](https://github.com/death-claw/vripper-project/releases/download/5.5.0/vripper-noarch-web-5.5.0.jar)
+
+Source code and previous versions are available on the [Releases page](https://github.com/death-claw/vripper-project/releases).  
+
+Application data (application logs, settings and persisted data) is stored in `C:\USERS\<your Windows username>\vripper (Windows)` or `HOME_FOLDER/.config/vripper (Linux and macOS)`
+
+
+## Supported Image Hosts
+The following hosts are supported:
+* acidimg.cc  
+* imagetwist.com  
+* imagezilla.com  
+* imgspice.com  
+* imagebam.com  
+* imgbox.com  
+* imx.to  
+* pimpandhost.com  
+* pixhost.to  
+* pixxxels.cc  
+* turboimagehost.com  
+* postimg.cc  
+* imagevenue.com  
+* pixroute.to  
+* vipr.im  
+
+## Instructions to run from Jar file
+You need Java 21+, you can download from https://adoptium.net/
+
+Download the latest jar file from the Release page, open a command prompt and run the jar file using the following command
+
+For the GUI app
+
+    javaw -jar vripper-gui.jar
+
+For the WEB app
+
+    java -jar vripper-web.jar
+
+Application data (application logs, settings and persisted data) is stored in the location where you launched the jar for both GUI and WEB
 
-This is my spin for a gallery ripper app for [vipergirls](https://vipergirls.to) website.
-The purpose of this project is to build a robust and clean application to conveniently download photo galleries using modern web technologies, Java + Spring boot for the back end and angular + electron for the front end.
 
 ## How to build
-You need a recent version of maven 3.6.1+.
 
-The application support 2 build modes:
- - Desktop app (*Partially cross platform): Self contained app, built with electron, depends on Java runtimes.
- - Server app (Fully cross platform): Depends on Java runtimes, you need a web browser to access the app UI.
+You need JDK 21 and a recent version of maven 3.8.x+
 
-Most people will be interested only on the desktop app, however if you have a nas or a server, the server app is there for you.
-
-To build the server app:
+To build, run the following command:
 
     mvn clean install
-To build the desktop app:
 
-    mvn clean install -Pelectron
+Build artifact is located under
 
-Maven will automatically handle front end compilation. However, for development, you will need to install a recent version of nodejs on your system.
+    vripper-project\vripper-gui\target\vripper-gui-{{version}}-jar-with-dependencies.jar
 
-*Partially cross platform:
-Technically cross platform, but the Desktop app relies on electron builder to make appropriate binaries for each platform. mac binaries can only be generated on a mac, and i don't own one. So i can only provide binaries for windows and linux.
-The Server app however depends only on Java, so it will work just fine on a mac, you only need a browser to access it.
+Copy the artifact into any other folder and run:
+
+    java -jar vripper-gui-{{version}}-jar-with-dependencies.jar

jpackage/jpackage-app-image.cfg

@@ -0,0 +1,2 @@
+--type app-image
+--java-options "-Dvripper.portable=true"

jpackage/jpackage-linux.cfg

@@ -0,0 +1,7 @@
+--icon icon.png
+--java-options "-Dvripper.portable=false"
+--linux-package-name vripper
+--linux-app-release 1
+--linux-menu-group Utility
+--linux-app-category java
+--linux-shortcut

jpackage/jpackage-macos.cfg

@@ -0,0 +1,4 @@
+--icon icon.icns
+--java-options "-Dvripper.portable=false"
+--mac-package-identifier me.mnlr.vripper.vripper-gui
+--mac-package-name VRipper

jpackage/jpackage-windows.cfg

@@ -0,0 +1,8 @@
+--icon icon.ico
+--java-options "-Dvripper.portable=false"
+--win-dir-chooser
+--win-menu
+--win-per-user-install
+--win-shortcut
+--win-shortcut-prompt
+--win-update-url https://github.com/death-claw/vripper-project/releases

jpackage/jpackage.cfg

@@ -0,0 +1,8 @@
+--input jar
+--main-jar vripper-gui.jar
+--add-modules java.base,java.desktop,java.sql,jdk.unsupported,jdk.crypto.ec,java.security.jgss,java.net.http
+--jlink-options "--strip-native-commands --strip-debug --no-man-pages --no-header-files --compress=zip-6"
+--name VRipper
+--description "Image ripper tool for vipergirls"
+--dest dist
+--vendor "death-claw"

pom.xml

@@ -1,20 +1,209 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>tn.mnlr</groupId>
-    <artifactId>vripper</artifactId>
-    <version>1.6.3</version>
+    <groupId>me.vripper</groupId>
+    <artifactId>vripper-project</artifactId>
     <packaging>pom</packaging>
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.1.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
+    <version>${revision}</version>
+    <properties>
+        <java.version>21</java.version>
+        <maven.deploy.skip>false</maven.deploy.skip>
+        <timestamp>${maven.build.timestamp}</timestamp>
+        <maven.build.timestamp.format>yyyy-MM-dd HH:mm:ss</maven.build.timestamp.format>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <revision>5.6.0</revision>
+        <kotlin.version>1.9.22</kotlin.version>
+        <slf4j.version>2.0.12</slf4j.version>
+        <logback.version>1.5.0</logback.version>
+        <kotlinx-coroutines.version>1.8.0</kotlinx-coroutines.version>
+        <exposed.version>0.47.0</exposed.version>
+        <snakeyaml.version>2.0</snakeyaml.version>
+        <koin.version>3.5.3</koin.version>
+        <h2.version>2.2.224</h2.version>
+        <htmlcleaner.version>2.29</htmlcleaner.version>
+        <failsafe.version>2.4.4</failsafe.version>
+        <caffeine.version>3.1.8</caffeine.version>
+        <jna-platform.version>5.14.0</jna-platform.version>
+        <kotlinx-serialization-json.version>1.6.2</kotlinx-serialization-json.version>
+        <httpclient5.version>5.3.1</httpclient5.version>
+        <commons-codec.version>1.16.1</commons-codec.version>
+        <liquibase-core.version>4.26.0</liquibase-core.version>
+        <liquibase-slf4j.version>5.0.0</liquibase-slf4j.version>
+        <grpc.kotlin.version>1.4.1</grpc.kotlin.version>
+        <java.grpc.version>1.62.2</java.grpc.version>
+        <protobuf.version>3.25.3</protobuf.version>
+    </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <version>1.1.0</version>
+                <configuration>
+                    <updatePomFile>true</updatePomFile>
+                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>flatten</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>flatten.clean</id>
+                        <phase>clean</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
     <modules>
-        <module>vripper-server</module>
-        <module>vripper-ui</module>
-        <module>vripper-electron</module>
+        <module>vripper-core</module>
+        <module>vripper-web-ui</module>
+        <module>vripper-web</module>
+        <module>vripper-gui</module>
     </modules>
-</project>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.slf4j</groupId>
+                <artifactId>slf4j-api</artifactId>
+                <version>${slf4j.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>logback-classic</artifactId>
+                <groupId>ch.qos.logback</groupId>
+                <version>${logback.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>logback-core</artifactId>
+                <groupId>ch.qos.logback</groupId>
+                <version>${logback.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>kotlin-stdlib</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <version>${kotlin.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jetbrains.kotlinx</groupId>
+                <artifactId>kotlinx-coroutines-core-jvm</artifactId>
+                <version>${kotlinx-coroutines.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jetbrains.kotlinx</groupId>
+                <artifactId>kotlinx-coroutines-javafx</artifactId>
+                <version>${kotlinx-coroutines.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jetbrains.exposed</groupId>
+                <artifactId>exposed-jdbc</artifactId>
+                <version>${exposed.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jetbrains.exposed</groupId>
+                <artifactId>exposed-java-time</artifactId>
+                <version>${exposed.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.yaml</groupId>
+                <artifactId>snakeyaml</artifactId>
+                <version>${snakeyaml.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.insert-koin</groupId>
+                <artifactId>koin-core-jvm</artifactId>
+                <version>${koin.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>h2</artifactId>
+                <groupId>com.h2database</groupId>
+                <version>${h2.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>htmlcleaner</artifactId>
+                <groupId>net.sourceforge.htmlcleaner</groupId>
+                <version>${htmlcleaner.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>failsafe</artifactId>
+                <groupId>net.jodah</groupId>
+                <version>${failsafe.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>caffeine</artifactId>
+                <groupId>com.github.ben-manes.caffeine</groupId>
+                <version>${caffeine.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>net.java.dev.jna</groupId>
+                <artifactId>jna-platform</artifactId>
+                <version>${jna-platform.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>kotlin-reflect</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <version>${kotlin.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jetbrains.kotlinx</groupId>
+                <artifactId>kotlinx-serialization-json</artifactId>
+                <version>${kotlinx-serialization-json.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>jcl-over-slf4j</artifactId>
+                <groupId>org.slf4j</groupId>
+                <version>${slf4j.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>httpclient5</artifactId>
+                <groupId>org.apache.httpcomponents.client5</groupId>
+                <version>${httpclient5.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>commons-codec</artifactId>
+                <groupId>commons-codec</groupId>
+                <version>${commons-codec.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>liquibase-core</artifactId>
+                <groupId>org.liquibase</groupId>
+                <version>${liquibase-core.version}</version>
+            </dependency>
+            <dependency>
+                <artifactId>liquibase-slf4j</artifactId>
+                <groupId>com.mattbertolini</groupId>
+                <version>${liquibase-slf4j.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-kotlin-stub</artifactId>
+                <version>${grpc.kotlin.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-protobuf</artifactId>
+                <version>${java.grpc.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>com.google.protobuf</groupId>
+                <artifactId>protobuf-kotlin</artifactId>
+                <version>${protobuf.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-netty-shaded</artifactId>
+                <version>${java.grpc.version}</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+</project>

vripper-core/pom.xml

@@ -0,0 +1,229 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>me.vripper</groupId>
+        <artifactId>vripper-project</artifactId>
+        <version>${revision}</version>
+    </parent>
+
+    <artifactId>vripper-core</artifactId>
+    <name>vripper-core</name>
+    <description>vripper-core</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <artifactId>logback-classic</artifactId>
+            <groupId>ch.qos.logback</groupId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-core</artifactId>
+        </dependency>
+        <dependency>
+            <artifactId>kotlin-stdlib</artifactId>
+            <groupId>org.jetbrains.kotlin</groupId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-core-jvm</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.exposed</groupId>
+            <artifactId>exposed-jdbc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.exposed</groupId>
+            <artifactId>exposed-java-time</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.insert-koin</groupId>
+            <artifactId>koin-core-jvm</artifactId>
+        </dependency>
+        <dependency>
+            <artifactId>h2</artifactId>
+            <groupId>com.h2database</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>httpclient5</artifactId>
+            <groupId>org.apache.httpcomponents.client5</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <groupId>org.slf4j</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>htmlcleaner</artifactId>
+            <groupId>net.sourceforge.htmlcleaner</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>failsafe</artifactId>
+            <groupId>net.jodah</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>caffeine</artifactId>
+            <groupId>com.github.ben-manes.caffeine</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>commons-codec</artifactId>
+            <groupId>commons-codec</groupId>
+        </dependency>
+        <dependency>
+            <groupId>net.java.dev.jna</groupId>
+            <artifactId>jna-platform</artifactId>
+        </dependency>
+        <dependency>
+            <artifactId>liquibase-core</artifactId>
+            <groupId>org.liquibase</groupId>
+        </dependency>
+        <dependency>
+            <artifactId>liquibase-slf4j</artifactId>
+            <groupId>com.mattbertolini</groupId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-serialization-json</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-kotlin-stub</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-protobuf</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-kotlin</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
+        <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <excludes>
+                    <exclude>version</exclude>
+                </excludes>
+            </resource>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>version</include>
+                </includes>
+            </resource>
+        </resources>
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>${kotlin.version}</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <jvmTarget>1.8</jvmTarget>
+                    <compilerPlugins>
+                        <plugin>kotlinx-serialization</plugin>
+                    </compilerPlugins>
+                </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.jetbrains.kotlin</groupId>
+                        <artifactId>kotlin-maven-serialization</artifactId>
+                        <version>${kotlin.version}</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
+            <plugin>
+                <groupId>kr.motd.maven</groupId>
+                <artifactId>os-maven-plugin</artifactId>
+                <version>1.7.1</version>
+                <executions>
+                    <execution>
+                        <phase>initialize</phase>
+                        <goals>
+                            <goal>detect</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.xolstice.maven.plugins</groupId>
+                <artifactId>protobuf-maven-plugin</artifactId>
+                <version>0.6.1</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <goals>
+                            <goal>compile</goal>
+                            <goal>compile-custom</goal>
+                        </goals>
+                        <configuration>
+                            <protocArtifact>
+                                com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}
+                            </protocArtifact>
+                            <pluginId>grpc-java</pluginId>
+                            <pluginArtifact>
+                                io.grpc:protoc-gen-grpc-java:${java.grpc.version}:exe:${os.detected.classifier}
+                            </pluginArtifact>
+                            <protocPlugins>
+                                <protocPlugin>
+                                    <id>grpc-kotlin</id>
+                                    <groupId>io.grpc</groupId>
+                                    <artifactId>protoc-gen-grpc-kotlin</artifactId>
+                                    <version>${grpc.kotlin.version}</version>
+                                    <classifier>jdk8</classifier>
+                                    <mainClass>io.grpc.kotlin.generator.GeneratorRunner</mainClass>
+                                </protocPlugin>
+                            </protocPlugins>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>compile-kt</id>
+                        <goals>
+                            <goal>compile-custom</goal>
+                        </goals>
+                        <configuration>
+                            <protocArtifact>
+                                com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}
+                            </protocArtifact>
+                            <outputDirectory>${project.build.directory}/generated-sources/protobuf/kotlin
+                            </outputDirectory>
+                            <pluginId>kotlin</pluginId>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.3.0</version>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Build-Time>${maven.build.timestamp}</Build-Time>
+                            <Built-By>${user.name}</Built-By>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

vripper-core/src/main/kotlin/me/vripper/Module.kt

@@ -0,0 +1,116 @@
+package me.vripper
+
+import me.vripper.download.DownloadService
+import me.vripper.event.EventBus
+import me.vripper.host.*
+import me.vripper.repositories.*
+import me.vripper.repositories.impl.*
+import me.vripper.services.*
+import org.koin.core.qualifier.named
+import org.koin.dsl.bind
+import org.koin.dsl.module
+
+val coreModule = module {
+    single<EventBus> {
+        EventBus
+    }
+    single<SettingsService> {
+        SettingsService(get())
+    }
+    single<ImageRepository> {
+        ImageRepositoryImpl()
+    }
+    single<PostDownloadStateRepository> {
+        PostDownloadStateRepositoryImpl()
+    }
+    single<MetadataRepository> {
+        MetadataRepositoryImpl()
+    }
+    single<ThreadRepository> {
+        ThreadRepositoryImpl()
+    }
+    single<LogRepository> {
+        LogRepositoryImpl(get())
+    }
+    single<DataTransaction> {
+        DataTransaction(get(), get(), get(), get(), get(), get(), get())
+    }
+    single<RetryPolicyService> {
+        RetryPolicyService(get(), get())
+    }
+    single<HTTPService> {
+        HTTPService(get(), get())
+    }
+    single<VGAuthService> {
+        VGAuthService(get(), get(), get())
+    }
+    single<ThreadCacheService> {
+        ThreadCacheService(get())
+    }
+    single<DownloadService> {
+        DownloadService(get(), get(), get(), get(), get())
+    }
+    single<DownloadSpeedService> {
+        DownloadSpeedService(get())
+    }
+
+    single<AppEndpointService> {
+        AppEndpointService(get(), get(), get(), get(), get())
+    }
+
+    single((named("localAppEndpointService"))) {
+        AppEndpointService(get(), get(), get(), get(), get())
+    } bind IAppEndpointService::class
+
+    single<MetadataService> {
+        MetadataService(get(), get(), get(), get())
+    }
+    single {
+        AcidimgHost(get(), get(), get())
+    } bind Host::class
+    single {
+        DPicMeHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImageBamHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImageTwistHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImageVenueHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImageZillaHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImgboxHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImgSpiceHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ImxHost(get(), get(), get())
+    } bind Host::class
+    single {
+        PimpandhostHost(get(), get(), get())
+    } bind Host::class
+    single {
+        PixhostHost(get(), get(), get())
+    } bind Host::class
+    single {
+        PixRouteHost(get(), get(), get())
+    } bind Host::class
+    single {
+        PixxxelsHost(get(), get(), get())
+    } bind Host::class
+    single {
+        PostImgHost(get(), get(), get())
+    } bind Host::class
+    single {
+        TurboImageHost(get(), get(), get())
+    } bind Host::class
+    single {
+        ViprImHost(get(), get(), get())
+    } bind Host::class
+}

vripper-core/src/main/kotlin/me/vripper/delegate/LoggerDelegate.kt

@@ -0,0 +1,16 @@
+package me.vripper.delegate
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KProperty
+
+class LoggerDelegate : ReadOnlyProperty<Any?, Logger> {
+    private var logger: Logger? = null
+    override operator fun getValue(thisRef: Any?, property: KProperty<*>): Logger {
+        if (logger == null) {
+            logger = LoggerFactory.getLogger(thisRef!!.javaClass)
+        }
+        return logger!!
+    }
+}

vripper-core/src/main/kotlin/me/vripper/download/DownloadService.kt

@@ -0,0 +1,299 @@
+package me.vripper.download
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Runnable
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import me.vripper.entities.ImageEntity
+import me.vripper.entities.LogEntryEntity
+import me.vripper.entities.PostEntity
+import me.vripper.entities.domain.Status
+import me.vripper.event.ErrorCountEvent
+import me.vripper.event.EventBus
+import me.vripper.event.QueueStateEvent
+import me.vripper.event.StoppedEvent
+import me.vripper.host.Host
+import me.vripper.model.ErrorCount
+import me.vripper.model.QueueState
+import me.vripper.services.DataTransaction
+import me.vripper.services.RetryPolicyService
+import me.vripper.services.SettingsService
+import me.vripper.services.VGAuthService
+import me.vripper.utilities.GLOBAL_EXECUTOR
+import me.vripper.utilities.formatToString
+import net.jodah.failsafe.Failsafe
+import net.jodah.failsafe.RetryPolicy
+import org.jetbrains.exposed.sql.transactions.transaction
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.locks.ReentrantLock
+import kotlin.concurrent.withLock
+
+class DownloadService(
+    private val settingsService: SettingsService,
+    private val dataTransaction: DataTransaction,
+    private val retryPolicyService: RetryPolicyService,
+    private val vgAuthService: VGAuthService,
+    private val eventBus: EventBus
+) {
+    private val maxPoolSize: Int = 24
+    private val log by me.vripper.delegate.LoggerDelegate()
+    private val running: MutableMap<Byte, MutableList<ImageDownloadRunnable>> = mutableMapOf()
+    private val pending: MutableMap<Byte, MutableList<ImageDownloadRunnable>> = mutableMapOf()
+    private val lock = ReentrantLock()
+    private val condition = lock.newCondition()
+    private val coroutineScope = CoroutineScope(SupervisorJob())
+
+    init {
+        Thread.ofVirtual().name("Download Loop").unstarted(Runnable {
+            val accepted: MutableList<ImageDownloadRunnable> = mutableListOf()
+            val candidates: MutableList<ImageDownloadRunnable> = mutableListOf()
+            while (!Thread.currentThread().isInterrupted) {
+                lock.withLock {
+                    candidates.addAll(getCandidates(candidateCount()))
+                    candidates.forEach {
+                        if (canRun(it.context.imageEntity.host)) {
+                            accepted.add(it)
+                            running[it.context.imageEntity.host]!!.add(it)
+                            log.debug("${it.context.imageEntity.url} accepted to run")
+                        }
+                    }
+                    accepted.forEach {
+                        pending[it.context.imageEntity.host]?.remove(it)
+                        scheduleForDownload(it)
+                    }
+                    accepted.clear()
+                    candidates.clear()
+                    try {
+                        condition.await()
+                    } catch (e: InterruptedException) {
+                        Thread.currentThread().interrupt()
+                    }
+                }
+            }
+        }).start()
+    }
+
+    fun stop(postIds: List<Long> = emptyList()) {
+        if (postIds.isNotEmpty()) {
+            stopInternal(postIds)
+            coroutineScope.launch {
+                eventBus.publishEvent(StoppedEvent(postIds))
+            }
+        } else {
+            stopAll()
+            coroutineScope.launch {
+                eventBus.publishEvent(StoppedEvent(listOf(-1)))
+            }
+        }
+    }
+
+    fun restartAll(postEntityIds: List<PostEntity> = emptyList()) {
+        if (postEntityIds.isNotEmpty()) {
+            restart(postEntityIds.associateWith { dataTransaction.findByPostIdAndIsNotCompleted(it.postId) })
+        } else {
+            restart(dataTransaction.findAllPosts()
+                .associateWith { dataTransaction.findByPostIdAndIsNotCompleted(it.postId) })
+        }
+    }
+
+    private fun restart(posts: Map<PostEntity, List<ImageEntity>>) {
+        lock.withLock {
+            val toProcess = mutableMapOf<PostEntity, List<ImageEntity>>()
+
+            for ((post, images) in posts) {
+                if (images.isEmpty()) {
+                    continue
+                }
+                if (isPending(post.postId)) {
+                    continue
+                }
+                toProcess[post] = images
+            }
+
+            toProcess.forEach { (post, images) ->
+                post.status = Status.PENDING
+                images.forEach { image ->
+                    with(image) {
+                        this.status = Status.PENDING
+                        this.downloaded = 0
+                    }
+                }
+            }
+
+            transaction {
+                dataTransaction.updatePosts(
+                    toProcess.keys.toList()
+                )
+                dataTransaction.updateImages(
+                    toProcess.values.flatten()
+                )
+            }
+
+            toProcess.keys.forEach {
+                vgAuthService.leaveThanks(it)
+            }
+
+
+            toProcess.entries.forEach { (post, images) ->
+                images.forEach { image ->
+                    log.debug("Enqueuing a job for ${image.url}")
+                    val imageDownloadRunnable = ImageDownloadRunnable(
+                        image, post.rank, settingsService.settings
+                    )
+                    pending.computeIfAbsent(
+                        image.host
+                    ) { mutableListOf() }
+                    pending[image.host]!!.add(imageDownloadRunnable)
+                }
+            }
+
+            condition.signal()
+        }
+    }
+
+    private fun isPending(postId: Long): Boolean {
+        return pending.values.flatten().any { it.context.imageEntity.postId == postId }
+    }
+
+    private fun isRunning(postId: Long): Boolean {
+        return running.values.flatten().any { it.context.imageEntity.postId == postId }
+    }
+
+    private fun stopAll() {
+        lock.withLock {
+            pending.values.clear()
+            running.values.flatten().forEach { obj: ImageDownloadRunnable -> obj.stop() }
+            dataTransaction.findAllNonCompletedPostIds().forEach {
+                dataTransaction.stopImagesByPostIdAndIsNotCompleted(it)
+                dataTransaction.finishPost(it)
+            }
+        }
+    }
+
+    private fun stopInternal(postIds: List<Long>) {
+        lock.withLock {
+            for (postId in postIds) {
+                pending.values.forEach { pending ->
+                    pending.removeIf { it.context.imageEntity.postId == postId }
+                }
+                running.values.flatten()
+                    .filter { p: ImageDownloadRunnable -> p.context.imageEntity.postId == postId }
+                    .forEach { obj: ImageDownloadRunnable -> obj.stop() }
+            }
+            postIds.forEach {
+                dataTransaction.stopImagesByPostIdAndIsNotCompleted(it)
+                dataTransaction.finishPost(it)
+            }
+        }
+    }
+
+    private fun canRun(host: Byte): Boolean {
+        val totalRunning = running.values.sumOf { it.size }
+        return (running[host]!!.size < settingsService.settings.connectionSettings.maxConcurrentPerHost && if (settingsService.settings.connectionSettings.maxGlobalConcurrent == 0) totalRunning < maxPoolSize else totalRunning < settingsService.settings.connectionSettings.maxGlobalConcurrent)
+    }
+
+    private fun candidateCount(): Map<Byte, Int> {
+        val map: MutableMap<Byte, Int> = mutableMapOf()
+        Host.getHosts().values.forEach { host: Byte ->
+            val imageDownloadRunnableList: List<ImageDownloadRunnable> = running.computeIfAbsent(
+                host
+            ) { mutableListOf() }
+            val count: Int =
+                settingsService.settings.connectionSettings.maxConcurrentPerHost - imageDownloadRunnableList.size
+            log.debug("Download slots for $host: $count")
+            map[host] = count
+        }
+        return map
+    }
+
+    private fun getCandidates(candidateCount: Map<Byte, Int>): List<ImageDownloadRunnable> {
+        val hostIntegerMap: MutableMap<Byte, Int> = candidateCount.toMutableMap()
+        val candidates: MutableList<ImageDownloadRunnable> = mutableListOf()
+        hosts@ for (host in pending.keys) {
+
+            val list: List<ImageDownloadRunnable> =
+                pending[host]!!.sortedWith(Comparator.comparingInt<ImageDownloadRunnable> { it.postRank }
+                    .thenComparingInt { it.context.imageEntity.index })
+
+            for (imageDownloadRunnable in list) {
+                val count = hostIntegerMap[host] ?: 0
+                if (count > 0) {
+                    candidates.add(imageDownloadRunnable)
+                    hostIntegerMap[host] = count - 1
+                } else {
+                    continue@hosts
+                }
+            }
+        }
+        return candidates
+    }
+
+    private fun scheduleForDownload(imageDownloadRunnable: ImageDownloadRunnable) {
+        log.debug("Scheduling a job for ${imageDownloadRunnable.context.imageEntity.url}")
+        CompletableFuture.runAsync({
+            coroutineScope.launch {
+                eventBus.publishEvent(QueueStateEvent(QueueState(runningCount(), pendingCount())))
+            }
+            Failsafe.with<Any, RetryPolicy<Any>>(retryPolicyService.buildRetryPolicyForDownload())
+                .onFailure {
+                    try {
+                        dataTransaction.saveLog(
+                            LogEntryEntity(
+                                type = LogEntryEntity.Type.DOWNLOAD,
+                                status = LogEntryEntity.Status.ERROR,
+                                message = "Failed to download ${imageDownloadRunnable.context.imageEntity.url}\n ${it.failure.formatToString()}"
+                            )
+                        )
+                    } catch (exp: Exception) {
+                        log.error("Failed to save event", exp)
+                    }
+                    log.error(
+                        "Failed to download ${imageDownloadRunnable.context.imageEntity.url} after ${it.attemptCount} tries",
+                        it.failure
+                    )
+                    val image = imageDownloadRunnable.context.imageEntity
+                    image.status = Status.ERROR
+                    dataTransaction.updateImage(image)
+                }.onComplete {
+                    afterJobFinish(imageDownloadRunnable)
+                    coroutineScope.launch {
+                        eventBus.publishEvent(
+                            QueueStateEvent(
+                                QueueState(
+                                    runningCount(), pendingCount()
+                                )
+                            )
+                        )
+                    }
+                    coroutineScope.launch {
+                        eventBus.publishEvent(ErrorCountEvent(ErrorCount(dataTransaction.countImagesInError())))
+                    }
+                    log.debug(
+                        "Finished downloading ${imageDownloadRunnable.context.imageEntity.url}"
+                    )
+                }.run(imageDownloadRunnable::run)
+        }, GLOBAL_EXECUTOR)
+    }
+
+    private fun afterJobFinish(imageDownloadRunnable: ImageDownloadRunnable) {
+        lock.withLock {
+            val image = imageDownloadRunnable.context.imageEntity
+            running[image.host]!!.remove(imageDownloadRunnable)
+            if (!isPending(image.postId) && !isRunning(
+                    image.postId
+                ) && !imageDownloadRunnable.context.stopped
+            ) {
+                dataTransaction.finishPost(image.postId, true)
+            }
+            condition.signal()
+        }
+    }
+
+    private fun pendingCount(): Int {
+        return pending.values.sumOf { it.size }
+    }
+
+    private fun runningCount(): Int {
+        return running.values.sumOf { it.size }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/download/ImageDownloadContext.kt

@@ -0,0 +1,17 @@
+package me.vripper.download
+
+import me.vripper.entities.ImageEntity
+import me.vripper.model.Settings
+import org.apache.hc.client5.http.classic.methods.HttpUriRequestBase
+import org.apache.hc.client5.http.cookie.BasicCookieStore
+import org.apache.hc.client5.http.protocol.HttpClientContext
+import org.koin.core.component.KoinComponent
+
+class ImageDownloadContext(val imageEntity: ImageEntity, val settings: Settings) : KoinComponent {
+
+    val httpContext: HttpClientContext =
+        HttpClientContext.create().apply { cookieStore = BasicCookieStore() }
+    val requests = mutableListOf<HttpUriRequestBase>()
+    val postId = imageEntity.postIdRef
+    var stopped = false
+}

vripper-core/src/main/kotlin/me/vripper/download/ImageDownloadRunnable.kt

@@ -0,0 +1,149 @@
+package me.vripper.download
+
+import kotlinx.coroutines.*
+import me.vripper.entities.ImageEntity
+import me.vripper.entities.domain.Status
+import me.vripper.exception.DownloadException
+import me.vripper.exception.HostException
+import me.vripper.host.DownloadedImage
+import me.vripper.host.Host
+import me.vripper.host.ImageMimeType
+import me.vripper.model.Settings
+import me.vripper.services.*
+import me.vripper.utilities.PathUtils.getExtension
+import me.vripper.utilities.PathUtils.getFileNameWithoutExtension
+import me.vripper.utilities.PathUtils.sanitize
+import net.jodah.failsafe.function.CheckedRunnable
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.inject
+import java.io.IOException
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.StandardCopyOption
+import java.util.*
+import kotlin.io.path.Path
+import kotlin.io.path.pathString
+
+class ImageDownloadRunnable(
+    private val imageEntity: ImageEntity, val postRank: Int, private val settings: Settings
+) : KoinComponent, CheckedRunnable {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    private val dataTransaction: DataTransaction by inject()
+    private val hosts: List<Host> = getKoin().getAll()
+
+    val context: ImageDownloadContext = ImageDownloadContext(imageEntity, settings)
+    private var stopped: Boolean
+        get() = context.stopped
+        set(value) {
+            context.stopped = value
+        }
+
+    @Throws(DownloadException::class)
+    fun download() {
+        try {
+            imageEntity.status = Status.DOWNLOADING
+            imageEntity.downloaded = 0
+            dataTransaction.updateImage(imageEntity)
+            synchronized(imageEntity.postId.toString().intern()) {
+                val post = dataTransaction.findPostById(context.postId).orElseThrow()
+                if (post.status != Status.DOWNLOADING) {
+                    post.status = Status.DOWNLOADING
+                    dataTransaction.updatePost(post)
+                }
+            }
+            log.debug("Getting image url and name from ${imageEntity.url} using ${imageEntity.host}")
+            val host = hosts.first { it.isSupported(imageEntity.url) }
+            val downloadedImage = host.downloadInternal(imageEntity.url, context)
+            log.debug("Resolved name for ${imageEntity.url}: ${downloadedImage.name}")
+            log.debug("Downloaded image {} to {}", imageEntity.url, downloadedImage.path)
+            synchronized(imageEntity.postId.toString().intern()) {
+                val post = dataTransaction.findPostById(context.postId).orElseThrow()
+                val downloadDirectory = Path(post.downloadDirectory, post.folderName).pathString
+                checkImageTypeAndRename(
+                    downloadDirectory, downloadedImage, imageEntity.index
+                )
+                if (imageEntity.downloaded == imageEntity.size && imageEntity.size > 0) {
+                    imageEntity.status = Status.FINISHED
+                    post.done += 1
+                    post.downloaded += imageEntity.size
+                    dataTransaction.updatePost(post)
+                } else {
+                    imageEntity.status = Status.ERROR
+                }
+                dataTransaction.updateImage(imageEntity)
+            }
+        } catch (e: Exception) {
+            if (stopped) {
+                return
+            }
+            imageEntity.status = Status.ERROR
+            dataTransaction.updateImage(imageEntity)
+            throw DownloadException(e)
+        }
+    }
+
+    @Throws(HostException::class)
+    private fun checkImageTypeAndRename(
+        downloadDirectory: String, downloadedImage: DownloadedImage, index: Int
+    ) {
+        val existingExtension = getExtension(downloadedImage.name).lowercase()
+        val fileNameWithoutExtension = getFileNameWithoutExtension(downloadedImage.name)
+        val extension = when (downloadedImage.type) {
+            ImageMimeType.IMAGE_BMP -> "BMP"
+            ImageMimeType.IMAGE_GIF -> "GIF"
+            ImageMimeType.IMAGE_JPEG -> "JPG"
+            ImageMimeType.IMAGE_PNG -> "PNG"
+            ImageMimeType.IMAGE_WEBP -> "WEBP"
+        }
+        val filename =
+            if (existingExtension.isBlank()) "${sanitize(downloadedImage.name)}.$extension" else "${
+                sanitize(
+                    fileNameWithoutExtension
+                )
+            }.$extension"
+        try {
+            val downloadDestinationFolder = Path.of(downloadDirectory)
+            Files.createDirectories(downloadDestinationFolder)
+            val finalFilename = "${
+                if (settings.downloadSettings.forceOrder) String.format(
+                    "%03d_", index + 1
+                ) else ""
+            }$filename"
+            imageEntity.filename = finalFilename
+            val imageDownloadPath = downloadDestinationFolder.resolve(finalFilename)
+            Files.copy(downloadedImage.path, imageDownloadPath, StandardCopyOption.REPLACE_EXISTING)
+        } catch (e: Exception) {
+            throw HostException("Failed to rename the image", e)
+        } finally {
+            try {
+                Files.delete(downloadedImage.path)
+            } catch (_: IOException) {
+            }
+        }
+    }
+
+    @Throws(Exception::class)
+    override fun run() {
+        if (stopped) {
+            return
+        }
+        download()
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || javaClass != other.javaClass) return false
+        val that = other as ImageDownloadRunnable
+        return imageEntity.id == that.imageEntity.id
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(imageEntity.id)
+    }
+
+    fun stop() {
+        context.requests.forEach { it.abort() }
+        stopped = true
+    }
+}

vripper-core/src/main/kotlin/me/vripper/entities/ImageEntity.kt

@@ -0,0 +1,32 @@
+package me.vripper.entities
+
+import me.vripper.entities.domain.Status
+
+data class ImageEntity(
+    val id: Long = -1,
+    val postId: Long,
+    val url: String,
+    val thumbUrl: String,
+    val host: Byte,
+    val index: Int,
+    val postIdRef: Long = -1,
+    var size: Long = -1,
+    var downloaded: Long = 0,
+    var status: Status = Status.STOPPED,
+    var filename: String = "",
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as ImageEntity
+
+        if (url != other.url) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        return url.hashCode()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/entities/LogEntryEntity.kt

@@ -0,0 +1,22 @@
+package me.vripper.entities
+
+import java.time.LocalDateTime
+
+data class LogEntryEntity(
+    val id: Long = -1,
+    val type: Type,
+    val status: Status,
+    val time: LocalDateTime = LocalDateTime.now(),
+    val message: String,
+) {
+
+    enum class Type(val stringValue: String) {
+        POST("Post"), THREAD("Thread"), THANKS("Thanks"), METADATA("Metadata"), SCAN("Scan"), DOWNLOAD(
+            "Download"
+        )
+    }
+
+    enum class Status(val stringValue: String) {
+        PENDING("Pending"), PROCESSING("Processing"), DONE("Done"), ERROR("Error")
+    }
+}

vripper-core/src/main/kotlin/me/vripper/entities/MetadataEntity.kt

@@ -0,0 +1,11 @@
+package me.vripper.entities
+
+import kotlinx.serialization.Serializable
+
+data class MetadataEntity(val postId: Long, val data: Data) {
+    @Serializable
+    data class Data(
+        val postedBy: String,
+        val resolvedNames: List<String>
+    )
+}

vripper-core/src/main/kotlin/me/vripper/entities/PostEntity.kt

@@ -0,0 +1,39 @@
+package me.vripper.entities
+
+import me.vripper.entities.domain.Status
+import java.time.LocalDateTime
+
+data class PostEntity(
+    val id: Long = -1,
+    val postTitle: String,
+    val threadTitle: String,
+    val forum: String,
+    val url: String,
+    val token: String,
+    val postId: Long,
+    val threadId: Long,
+    val total: Int,
+    val hosts: Set<String>,
+    val downloadDirectory: String,
+    val addedOn: LocalDateTime = LocalDateTime.now(),
+    var folderName: String,
+    var status: Status = Status.STOPPED,
+    var done: Int = 0,
+    var rank: Int = Int.MAX_VALUE,
+    var size: Long = -1,
+    var downloaded: Long = 0,
+) {
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as PostEntity
+
+        return postId == other.postId
+    }
+
+    override fun hashCode(): Int {
+        return postId.hashCode()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/entities/ThreadEntity.kt

@@ -0,0 +1,22 @@
+package me.vripper.entities
+
+data class ThreadEntity(
+    val id: Long = -1,
+    val title: String,
+    val link: String,
+    val threadId: Long,
+    var total: Int = 0,
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as ThreadEntity
+
+        return threadId == other.threadId
+    }
+
+    override fun hashCode(): Int {
+        return threadId.hashCode()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/entities/domain/Status.kt

@@ -0,0 +1,5 @@
+package me.vripper.entities.domain
+
+enum class Status(val stringValue: String) {
+    PENDING("Pending"), DOWNLOADING("Downloading"), FINISHED("Finished"), ERROR("Error"), STOPPED("Stopped")
+}

vripper-core/src/main/kotlin/me/vripper/event/Event.kt

@@ -0,0 +1,27 @@
+package me.vripper.event
+
+import me.vripper.entities.*
+import me.vripper.model.DownloadSpeed
+import me.vripper.model.ErrorCount
+import me.vripper.model.QueueState
+import me.vripper.model.Settings
+
+data class PostCreateEvent(val postEntities: List<PostEntity>)
+data class PostUpdateEvent(val postEntities: List<PostEntity>)
+data class PostDeleteEvent(val postIds: List<Long>)
+data class ImageEvent(val imageEntities: List<ImageEntity>)
+data class ThreadCreateEvent(val threadEntity: ThreadEntity)
+data class ThreadUpdateEvent(val threadEntity: ThreadEntity)
+data class ThreadDeleteEvent(val threadId: Long)
+class ThreadClearEvent
+data class VGUserLoginEvent(val username: String)
+data class DownloadSpeedEvent(val downloadSpeed: DownloadSpeed)
+data class QueueStateEvent(val queueState: QueueState)
+data class ErrorCountEvent(val errorCount: ErrorCount)
+data class SettingsUpdateEvent(val settings: Settings)
+data class MetadataUpdateEvent(val metadataEntity: MetadataEntity)
+data class LogCreateEvent(val logEntryEntity: LogEntryEntity)
+data class LogUpdateEvent(val logEntryEntity: LogEntryEntity)
+data class LogDeleteEvent(val deleted: List<Long>)
+data class LoadingTasks(val loading: Boolean)
+data class StoppedEvent(val postIds: List<Long>)

vripper-core/src/main/kotlin/me/vripper/event/EventBus.kt

@@ -0,0 +1,14 @@
+package me.vripper.event
+
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+
+object EventBus {
+
+    private val _events = MutableSharedFlow<Any>()
+    val events = _events.asSharedFlow()
+
+    suspend fun publishEvent(event: Any) {
+        _events.emit(event)
+    }
+}

vripper-core/src/main/kotlin/me/vripper/exception/DownloadException.kt

@@ -0,0 +1,6 @@
+package me.vripper.exception
+
+class DownloadException : Exception {
+    constructor(message: String?) : super(message)
+    constructor(e: Throwable?) : super(e)
+}

vripper-core/src/main/kotlin/me/vripper/exception/HostException.kt

@@ -0,0 +1,7 @@
+package me.vripper.exception
+
+class HostException : Exception {
+    constructor(e: Throwable?) : super(e)
+    constructor(message: String?) : super(message)
+    constructor(message: String?, e: Throwable?) : super(message, e)
+}

vripper-core/src/main/kotlin/me/vripper/exception/HtmlProcessorException.kt

@@ -0,0 +1,3 @@
+package me.vripper.exception
+
+class HtmlProcessorException(e: Throwable?) : Exception(e)

vripper-core/src/main/kotlin/me/vripper/exception/PostParseException.kt

@@ -0,0 +1,7 @@
+package me.vripper.exception
+
+class PostParseException : Exception {
+    constructor(message: String?) : super(message)
+    constructor(message: String?, e: Throwable?) : super(message, e)
+    constructor(e: Throwable?) : super(e)
+}

vripper-core/src/main/kotlin/me/vripper/exception/QueueException.kt

@@ -0,0 +1,7 @@
+package me.vripper.exception
+
+class QueueException : Exception {
+    constructor(message: String?) : super(message)
+    constructor(message: String?, e: Throwable?) : super(message, e)
+    constructor(e: Throwable?) : super(e)
+}

vripper-core/src/main/kotlin/me/vripper/exception/RenameException.kt

@@ -0,0 +1,3 @@
+package me.vripper.exception
+
+class RenameException(message: String?, e: Exception?) : Exception(message, e)

vripper-core/src/main/kotlin/me/vripper/exception/ValidationException.kt

@@ -0,0 +1,3 @@
+package me.vripper.exception
+
+class ValidationException(message: String) : Exception(message)

vripper-core/src/main/kotlin/me/vripper/exception/VripperException.kt

@@ -0,0 +1,6 @@
+package me.vripper.exception
+
+class VripperException : Exception {
+    constructor(message: String?) : super(message)
+    constructor(e: Throwable?) : super(e)
+}

vripper-core/src/main/kotlin/me/vripper/exception/XpathException.kt

@@ -0,0 +1,3 @@
+package me.vripper.exception
+
+class XpathException(e: Throwable?) : Exception(e)

vripper-core/src/main/kotlin/me/vripper/host/AcidimgHost.kt

@@ -0,0 +1,86 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.XpathUtils
+import org.apache.hc.client5.http.classic.methods.HttpPost
+import org.apache.hc.client5.http.entity.UrlEncodedFormEntity
+import org.apache.hc.core5.http.message.BasicNameValuePair
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class AcidimgHost(
+    private val httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("acidimg.cc", 0, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String, document: Document, context: ImageDownloadContext
+    ): Pair<String, String> {
+        try {
+            log.debug(
+                String.format(
+                    "Looking for xpath expression %s in %s", CONTINUE_BUTTON_XPATH, url
+                )
+            )
+            XpathUtils.getAsNode(document, CONTINUE_BUTTON_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        }
+        log.debug(String.format("Click button found for %s", url))
+        val httpPost = HttpPost(url).also {
+            it.addHeader("Referer", url)
+            it.entity = UrlEncodedFormEntity(
+                listOf(
+                    BasicNameValuePair(
+                        "imgContinue",
+                        "Continue to your image"
+                    )
+                )
+            )
+        }.also { context.requests.add(it) }
+        log.debug(String.format("Requesting %s", httpPost))
+        val doc = try {
+            httpService.client.execute(
+                httpPost, context.httpContext
+            )
+            { response ->
+                log.debug(String.format("Cleaning response for %s", httpPost))
+                HtmlUtils.clean(response.entity.content)
+            }
+        } catch (e: Exception) {
+            throw HostException(e)
+        }
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(doc, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'", IMG_XPATH, url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim()
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim()
+            Pair(
+                imgTitle.ifEmpty { getDefaultImageName(imgUrl) }, imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val CONTINUE_BUTTON_XPATH = "//input[@id='continuebutton']"
+        private const val IMG_XPATH = "//img[@class='centred']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/DPicMeHost.kt

@@ -0,0 +1,61 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.util.*
+
+class DPicMeHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("dpic.me", 1, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle =
+                Optional.ofNullable(imgNode.attributes.getNamedItem("alt"))
+                    .map { e: Node -> e.textContent.trim() }
+                    .orElse("")
+            val imgUrl =
+                Optional.ofNullable(imgNode.attributes.getNamedItem("src"))
+                    .map { e: Node -> e.textContent.trim() }
+                    .orElse("")
+            var defaultName: String = UUID.randomUUID().toString()
+            val index = imgUrl.lastIndexOf('/')
+            if (index != -1 && index < imgUrl.length) {
+                defaultName = imgUrl.substring(imgUrl.lastIndexOf('/') + 1)
+            }
+            Pair((imgTitle.ifEmpty { defaultName })!!, imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='pic']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/Host.kt

@@ -0,0 +1,217 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.DownloadException
+import me.vripper.exception.HostException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.PathUtils.getFileNameWithoutExtension
+import org.apache.hc.client5.http.classic.methods.HttpGet
+import org.apache.hc.client5.http.classic.methods.HttpHead
+import org.apache.hc.core5.http.ClassicHttpResponse
+import org.apache.hc.core5.http.Header
+import org.jetbrains.exposed.sql.transactions.transaction
+import org.w3c.dom.Document
+import java.nio.file.Files
+import java.nio.file.Path
+
+abstract class Host(
+    val hostName: String,
+    val hostId: Byte,
+    private val httpService: HTTPService,
+    private val dataTransaction: DataTransaction,
+    private val downloadSpeedService: DownloadSpeedService
+) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    companion object {
+        private const val READ_BUFFER_SIZE = 8192
+        private val hosts: MutableMap<String, Byte> = mutableMapOf()
+
+        fun getHosts(): Map<String, Byte> {
+            return hosts.toMap()
+        }
+    }
+
+    init {
+        hosts[hostName] = hostId
+    }
+
+    @Throws(HostException::class)
+    abstract fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String>
+
+    @Throws(HostException::class)
+    fun downloadInternal(url: String, context: ImageDownloadContext): DownloadedImage {
+        val headers = head(url, context)
+        // is the body of type image ?
+        val imageMimeType = getImageMimeType(headers)
+        val downloadedImage = if (imageMimeType != null) {
+            // a direct link, awesome
+            val downloadedImage = fetch(url, context) {
+                handleImageDownload(it, context)
+            }
+            DownloadedImage(getDefaultImageName(url), downloadedImage.first, downloadedImage.second)
+        } else {
+            // linked image ?
+            val value = headers.find { it.name.contains("content-type", true) }?.value
+            if (value != null) {
+                if (value.contains("text/html")) {
+                    val document = fetch(url, context) {
+                        HtmlUtils.clean(it.entity.content)
+                    }
+                    if (log.isDebugEnabled) {
+                        log.debug("Cleaning $url response", url)
+                    }
+                    val resolvedImage = resolve(url, document, context)
+                    val downloadImage: Pair<Path, ImageMimeType> =
+                        fetch(resolvedImage.second, context) {
+                            handleImageDownload(it, context)
+                        }
+                    DownloadedImage(resolvedImage.first, downloadImage.first, downloadImage.second)
+                } else {
+                    throw HostException("Unable to download $url, can't process content type $value")
+                }
+            } else {
+                throw HostException("Unexpected server response for $url, response have no content type")
+            }
+        }
+        return downloadedImage
+    }
+
+    private fun handleImageDownload(
+        response: ClassicHttpResponse,
+        context: ImageDownloadContext
+    ): Pair<Path, ImageMimeType> {
+        val mimeType = getImageMimeType(response.headers)
+            ?: throw HostException("Unsupported image type ${response.getFirstHeader("content-type")}")
+
+        val tempImage = Files.createTempFile(
+            Path.of(context.settings.systemSettings.tempPath),
+            "vripper_",
+            ".tmp"
+        )
+        return Files.newOutputStream(tempImage).use { fos ->
+            val image = context.imageEntity
+            synchronized(image.postId.toString().intern()) {
+                val post = dataTransaction.findPostById(context.postId).orElseThrow()
+                val size = if (image.size < 0) {
+                    response.entity.contentLength
+                } else {
+                    0
+                }
+                image.size = response.entity.contentLength
+                post.size += size
+                transaction {
+                    dataTransaction.updateImage(image)
+                    dataTransaction.updatePost(post)
+                }
+            }
+            log.debug(
+                "Length is ${image.size}"
+            )
+            log.debug(
+                "Starting data transfer"
+            )
+            val buffer = ByteArray(READ_BUFFER_SIZE)
+            var read: Int
+            while (response.entity.content.read(buffer, 0, READ_BUFFER_SIZE)
+                    .also { read = it } != -1 && !context.stopped
+            ) {
+                fos.write(buffer, 0, read)
+                image.downloaded += read
+                dataTransaction.updateImage(image)
+                downloadSpeedService.reportDownloadedBytes(read.toLong())
+            }
+            Pair(tempImage, mimeType)
+        }
+    }
+
+    fun isSupported(url: String): Boolean {
+        return url.contains(hostName)
+    }
+
+    @Throws(HostException::class)
+    fun head(url: String, context: ImageDownloadContext): Array<Header> {
+        val httpHead = HttpHead(url).also { context.requests.add(it) }
+        log.debug(String.format("Requesting %s", url))
+        return httpService.client.execute(
+            httpHead,
+            context.httpContext
+        ) {
+            if (it.code / 100 != 2) {
+                throw HostException("Unexpected response code: ${it.code}")
+            }
+            it.headers
+        }
+    }
+
+    @Throws(HostException::class)
+    fun <T> fetch(
+        url: String,
+        context: ImageDownloadContext,
+        transformer: (ClassicHttpResponse) -> T
+    ): T {
+        val httpGet =
+            HttpGet(url).also { it.addHeader("Referer", context.imageEntity.url) }.also { context.requests.add(it) }
+        log.debug(String.format("Requesting %s", url))
+        return httpService.client.execute(httpGet, context.httpContext) {
+            if (it.code / 100 != 2) {
+                throw DownloadException("Server returned code ${it.code}")
+            }
+            transformer(it)
+        }
+    }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    private fun getImageMimeType(headers: Array<Header>): ImageMimeType? {
+
+        // first check if content type header exists
+        val value = headers.find { it.name.contains("content-type", true) }?.value
+
+        // header found, check the type
+        return if (value != null) {
+            ImageMimeType.entries.find {
+                value.contains(it.strValue, true)
+            }
+        } else {
+            null
+        }
+    }
+
+    fun getDefaultImageName(imgUrl: String): String {
+        val imageTitle = imgUrl.substring(imgUrl.lastIndexOf('/') + 1)
+        log.debug(String.format("Extracting name from url %s: %s", imgUrl, imageTitle))
+        return getFileNameWithoutExtension(imageTitle)
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Host
+
+        return hostName == other.hostName
+    }
+
+    override fun hashCode(): Int {
+        return hostName.hashCode()
+    }
+
+    override fun toString(): String {
+        return hostName
+    }
+}
+
+data class DownloadedImage(val name: String, val path: Path, val type: ImageMimeType)
+
+enum class ImageMimeType(val strValue: String) {
+    IMAGE_BMP("image/bmp"),
+    IMAGE_GIF("image/gif"),
+    IMAGE_JPEG("image/jpeg"),
+    IMAGE_PNG("image/png"),
+    IMAGE_WEBP("image/webp"),
+}

vripper-core/src/main/kotlin/me/vripper/host/ImageBamHost.kt

@@ -0,0 +1,85 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.XpathUtils
+import org.apache.hc.client5.http.impl.cookie.BasicClientCookie
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.sql.Date
+import java.time.LocalDateTime
+import java.time.ZoneId
+import java.util.*
+
+class ImageBamHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imagebam.com", 2, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val doc = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", CONTINUE_XPATH, url))
+            if (XpathUtils.getAsNode(document, CONTINUE_XPATH) != null) {
+                val clientCookie = BasicClientCookie("nsfw_inter", "1")
+                clientCookie.domain = "www.imagebam.com"
+                clientCookie.path = "/"
+                clientCookie.expiryDate =
+                    Date.from(
+                        LocalDateTime.now().plusDays(3).atZone(ZoneId.systemDefault()).toInstant()
+                    )
+                context.httpContext.cookieStore.addCookie(clientCookie)
+                fetch(url, context) {
+                    HtmlUtils.clean(it.entity.content)
+                }
+            } else {
+                document
+            }
+        } catch (e: XpathException) {
+            throw HostException(e)
+        }
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(doc, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = Optional.ofNullable(imgNode.attributes.getNamedItem("alt"))
+                .map { e: Node -> e.textContent.trim { it <= ' ' } }
+                .orElse("")
+            val imgUrl = Optional.ofNullable(imgNode.attributes.getNamedItem("src"))
+                .map { e: Node -> e.textContent.trim { it <= ' ' } }
+                .orElse("")
+            var defaultName: String = UUID.randomUUID().toString()
+            val index = imgUrl.lastIndexOf('/')
+            if (index != -1 && index < imgUrl.length) {
+                defaultName = imgUrl.substring(imgUrl.lastIndexOf('/') + 1)
+            }
+            Pair((imgTitle.ifEmpty { defaultName })!!, imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[contains(@class,'main-image')]"
+        private const val CONTINUE_XPATH = "//*[contains(text(), 'Continue')]"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImageTwistHost.kt

@@ -0,0 +1,53 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.util.*
+
+class ImageTwistHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imagetwist.com", 3, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle =
+                Optional.ofNullable(imgNode.attributes.getNamedItem("alt"))
+                    .map { obj: Node -> obj.textContent }
+                    .map { obj: String -> obj.trim { it <= ' ' } }.orElse(null)
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(imgTitle!!, imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[contains(@class, 'img')]"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImageVenueHost.kt

@@ -0,0 +1,73 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class ImageVenueHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imagevenue.com", 4, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val doc = try {
+            log.debug(
+                String.format(
+                    "Looking for xpath expression %s in %s",
+                    CONTINUE_BUTTON_XPATH,
+                    url
+                )
+            )
+            if (XpathUtils.getAsNode(document, CONTINUE_BUTTON_XPATH) != null) {
+                // Button detected. No need to actually click it, just make the call again.
+                fetch(url, context) {
+                    HtmlUtils.clean(it.entity.content)
+                }
+            } else {
+                document
+            }
+        } catch (e: XpathException) {
+            throw HostException(e)
+        }
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(doc, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(
+                if (imgTitle.isEmpty()) imgUrl.substring(imgUrl.lastIndexOf('/') + 1) else imgTitle,
+                imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val CONTINUE_BUTTON_XPATH = "//a[@title='Continue to ImageVenue']"
+        private const val IMG_XPATH = "//a[@data-toggle='full']/img[@id='main-image']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImageZillaHost.kt

@@ -0,0 +1,51 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+
+class ImageZillaHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imagezilla.net", 5, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val titleNode = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        log.debug(String.format("Resolving name for %s", url))
+        var title = titleNode.attributes.getNamedItem("title").textContent.trim()
+        titleNode.textContent.trim()
+        if (title.isEmpty()) {
+            title = getDefaultImageName(url)
+        }
+        return try {
+            Pair(title, url.replace("show", "images"))
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='photo']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImgSpiceHost.kt

@@ -0,0 +1,51 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class ImgSpiceHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imgspice.com", 7, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(
+                imgTitle.ifEmpty { imgUrl.substring(imgUrl.lastIndexOf('/') + 1) }, imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='imgpreview']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImgboxHost.kt

@@ -0,0 +1,49 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class ImgboxHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imgbox.com", 6, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = imgNode.attributes.getNamedItem("title").textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(imgTitle, imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='img']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ImxHost.kt

@@ -0,0 +1,87 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.HtmlProcessorException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.XpathUtils
+import org.apache.hc.client5.http.classic.methods.HttpPost
+import org.apache.hc.client5.http.entity.UrlEncodedFormEntity
+import org.apache.hc.core5.http.message.BasicNameValuePair
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.io.IOException
+
+class ImxHost(
+    private val httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("imx.to", 8, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val httpsUrl = url.replace("http:", "https:")
+        var value: String? = null
+        try {
+            log.debug("Looking for xpath expression $CONTINUE_BUTTON_XPATH in $httpsUrl")
+            val contDiv = XpathUtils.getAsNode(document, CONTINUE_BUTTON_XPATH)
+                ?: throw HostException("$CONTINUE_BUTTON_XPATH cannot be found")
+            val node = contDiv.attributes.getNamedItem("value")
+            if (node != null) {
+                value = node.textContent
+            }
+        } catch (e: XpathException) {
+            throw HostException(e)
+        }
+        if (value == null) {
+            throw HostException("Failed to obtain value attribute from continue input")
+        }
+        log.debug("Click button found for $httpsUrl")
+        val httpPost: HttpPost = HttpPost(httpsUrl).also {
+            it.entity = UrlEncodedFormEntity(listOf(BasicNameValuePair("imgContinue", value)))
+        }.also { context.requests.add(it) }
+        log.debug("Requesting {}", httpPost)
+        val doc = try {
+            httpService.client.execute(
+                httpPost, context.httpContext
+            ) { response ->
+                log.debug("Cleaning response for {}", httpPost)
+                HtmlUtils.clean(response.entity.content)
+            }
+        } catch (e: IOException) {
+            throw HostException(e)
+        } catch (e: HtmlProcessorException) {
+            throw HostException(e)
+        }
+        val imgNode: Node = try {
+            log.debug("Looking for xpath expression $IMG_XPATH in $httpsUrl")
+            XpathUtils.getAsNode(doc, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            "Xpath $IMG_XPATH cannot be found in $httpsUrl"
+        )
+        return try {
+            log.debug("Resolving name and image url for $httpsUrl")
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(
+                imgTitle.ifEmpty { getDefaultImageName(imgUrl) }, imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val CONTINUE_BUTTON_XPATH = "//*[@name='imgContinue']"
+        private const val IMG_XPATH = "//img[@class='centred']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/PimpandhostHost.kt

@@ -0,0 +1,78 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.net.URI
+import java.net.URISyntaxException
+
+class PimpandhostHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("pimpandhost.com", 9, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val newUrl: String
+        try {
+            newUrl = appendUri(url.replace("http://", "https://").replace("-medium(\\.html)?".toRegex(), ""), "size=original")
+        } catch (e: Exception) {
+            throw HostException(e)
+        }
+        val doc = fetch(newUrl, context) {
+            HtmlUtils.clean(it.entity.content)
+        }
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, newUrl))
+            XpathUtils.getAsNode(doc, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", newUrl))
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' }
+            val imgUrl =
+                "https:" + imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(
+                imgTitle.ifEmpty { imgUrl.substring(imgUrl.lastIndexOf('/') + 1) }, imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    @Throws(URISyntaxException::class)
+    fun appendUri(uri: String, appendQuery: String): String {
+        val oldUri = URI(uri)
+        var newQuery = oldUri.query
+        if (newQuery == null) {
+            newQuery = appendQuery
+        } else {
+            newQuery += "&$appendQuery"
+        }
+        return URI(
+            oldUri.scheme, oldUri.authority, oldUri.path, newQuery, oldUri.fragment
+        ).toString()
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[contains(@class, 'original')]"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/PixRouteHost.kt

@@ -0,0 +1,48 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class PixRouteHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("pixroute.com", 11, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            Pair(imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' },
+                imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' })
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='imgpreview']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/PixhostHost.kt

@@ -0,0 +1,49 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class PixhostHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("pixhost.to", 10, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = imgNode.attributes.getNamedItem("alt").textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' }
+            Pair(imgTitle.substring(imgTitle.indexOf('_') + 1), imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[@id='image']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/PixxxelsHost.kt

@@ -0,0 +1,63 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+
+class PixxxelsHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("pixxxels.cc", 12, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        val titleNode = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", TITLE_XPATH, url))
+            XpathUtils.getAsNode(document, TITLE_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                TITLE_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = titleNode.textContent.trim { it <= ' ' }
+            val imgUrl = imgNode.attributes.getNamedItem("href").textContent.trim { it <= ' ' }
+            Pair(
+                imgTitle.ifEmpty { imgUrl.substring(imgUrl.lastIndexOf('/') + 1) }, imgUrl
+            )
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//*[@id='download']"
+        private const val TITLE_XPATH = "//*[contains(@class,'imagename')]"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/PostImgHost.kt

@@ -0,0 +1,64 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.util.*
+
+class PostImgHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("postimg.cc", 13, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val titleNode = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", TITLE_XPATH, url))
+            XpathUtils.getAsNode(document, TITLE_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                TITLE_XPATH,
+                url
+            )
+        )
+        val urlNode = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle = Optional.ofNullable(titleNode)
+                .map { node: Node -> node.textContent.trim { it <= ' ' } }
+                .orElseGet { getDefaultImageName(url) }
+            Pair(imgTitle, urlNode.attributes.getNamedItem("href").textContent.trim { it <= ' ' })
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val TITLE_XPATH = "//span[contains(@class,'imagename')]"
+        private const val IMG_XPATH = "//a[@id='download']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/TurboImageHost.kt

@@ -0,0 +1,51 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+
+class TurboImageHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("turboimagehost.com", 14, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        var title: String?
+        title = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", TITLE_XPATH, url))
+            val titleNode: Node? = XpathUtils.getAsNode(document, TITLE_XPATH)
+            log.debug(String.format("Resolving name for %s", url))
+            titleNode?.textContent?.trim { it <= ' ' }
+        } catch (e: XpathException) {
+            throw HostException(e)
+        }
+        if (title.isNullOrEmpty()) {
+            title = getDefaultImageName(url)
+        }
+        val urlNode: Node = XpathUtils.getAsNode(document, IMG_XPATH)
+            ?: throw HostException(
+                String.format(
+                    "Xpath '%s' cannot be found in '%s'",
+                    IMG_XPATH,
+                    url
+                )
+            )
+        return Pair(title, urlNode.attributes.getNamedItem("src").textContent.trim { it <= ' ' })
+    }
+
+    companion object {
+        private const val TITLE_XPATH = "//div[contains(@class,'titleFullS')]/h1"
+        private const val IMG_XPATH = "//img[@id='imageid']"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/host/ViprImHost.kt

@@ -0,0 +1,53 @@
+package me.vripper.host
+
+import me.vripper.download.ImageDownloadContext
+import me.vripper.exception.HostException
+import me.vripper.exception.XpathException
+import me.vripper.services.*
+import me.vripper.utilities.XpathUtils
+import org.w3c.dom.Document
+import org.w3c.dom.Node
+import java.util.*
+
+class ViprImHost(
+    httpService: HTTPService,
+    dataTransaction: DataTransaction,
+    downloadSpeedService: DownloadSpeedService,
+) : Host("vipr.im", 15, httpService, dataTransaction, downloadSpeedService) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    @Throws(HostException::class)
+    override fun resolve(
+        url: String,
+        document: Document,
+        context: ImageDownloadContext
+    ): Pair<String, String> {
+        val imgNode: Node = try {
+            log.debug(String.format("Looking for xpath expression %s in %s", IMG_XPATH, url))
+            XpathUtils.getAsNode(document, IMG_XPATH)
+        } catch (e: XpathException) {
+            throw HostException(e)
+        } ?: throw HostException(
+            String.format(
+                "Xpath '%s' cannot be found in '%s'",
+                IMG_XPATH,
+                url
+            )
+        )
+        return try {
+            log.debug(String.format("Resolving name and image url for %s", url))
+            val imgTitle =
+                Optional.ofNullable(imgNode.attributes.getNamedItem("alt"))
+                    .map { obj: Node -> obj.textContent }
+                    .map { obj: String -> obj.trim() }.orElse(null)
+            val imgUrl = imgNode.attributes.getNamedItem("src").textContent.trim()
+            Pair(imgTitle!!, imgUrl)
+        } catch (e: Exception) {
+            throw HostException("Unexpected error occurred", e)
+        }
+    }
+
+    companion object {
+        private const val IMG_XPATH = "//img[contains(@class, 'img')]"
+    }
+}

vripper-core/src/main/kotlin/me/vripper/listeners/AppLock.kt

@@ -0,0 +1,30 @@
+package me.vripper.listeners
+
+import me.vripper.utilities.ApplicationProperties.VRIPPER_DIR
+import java.io.RandomAccessFile
+import java.nio.file.Files
+import kotlin.io.path.pathString
+import kotlin.system.exitProcess
+
+object AppLock {
+    fun exclusiveLock() {
+        val lock = VRIPPER_DIR.resolve("lock")
+        try {
+            val randomFile = RandomAccessFile(lock.pathString, "rw")
+            val channel = randomFile.channel
+            val fileLock = channel.tryLock()
+            if (fileLock == null) {
+                System.err.println("Another instance is already running in ${lock.parent.pathString}")
+                exitProcess(-1)
+            } else {
+                Runtime.getRuntime().addShutdownHook(Thread {
+                    fileLock.release()
+                    channel.close()
+                    Files.deleteIfExists(lock)
+                })
+            }
+        } catch (e: Exception) {
+            println(e.toString())
+        }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/listeners/OnStartupListener.kt

@@ -0,0 +1,16 @@
+package me.vripper.listeners
+
+import me.vripper.services.DataTransaction
+import me.vripper.services.MetadataService
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.inject
+
+open class OnStartupListener : KoinComponent {
+    private val dataTransaction: DataTransaction by inject()
+    private val metadataService: MetadataService by inject()
+
+    open fun run() {
+        dataTransaction.setDownloadingToStopped()
+        metadataService.init()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/model/DownloadSpeed.kt

@@ -0,0 +1,3 @@
+package me.vripper.model
+
+data class DownloadSpeed(val speed: Long)

vripper-core/src/main/kotlin/me/vripper/model/ErrorCount.kt

@@ -0,0 +1,3 @@
+package me.vripper.model
+
+data class ErrorCount(val count: Int)

vripper-core/src/main/kotlin/me/vripper/model/Image.kt

@@ -0,0 +1,5 @@
+package me.vripper.model
+
+import me.vripper.entities.ImageEntity
+
+typealias Image = ImageEntity

vripper-core/src/main/kotlin/me/vripper/model/LogEntry.kt

@@ -0,0 +1,5 @@
+package me.vripper.model
+
+import me.vripper.entities.LogEntryEntity
+
+typealias LogEntry = LogEntryEntity

vripper-core/src/main/kotlin/me/vripper/model/LoggedUser.kt

@@ -0,0 +1,3 @@
+package me.vripper.model
+
+data class LoggedUser(val user: String)

vripper-core/src/main/kotlin/me/vripper/model/Metadata.kt

@@ -0,0 +1,5 @@
+package me.vripper.model
+
+import me.vripper.entities.MetadataEntity
+
+typealias Metadata = MetadataEntity

vripper-core/src/main/kotlin/me/vripper/model/Post.kt

@@ -0,0 +1,34 @@
+package me.vripper.model
+
+import me.vripper.entities.domain.Status
+import java.time.LocalDateTime
+import kotlin.io.path.Path
+import kotlin.io.path.pathString
+
+data class Post(
+    val id: Long = -1,
+    val postTitle: String,
+    val threadTitle: String,
+    val forum: String,
+    val url: String,
+    val token: String,
+    val postId: Long,
+    val threadId: Long,
+    val total: Int,
+    val hosts: Set<String>,
+    val downloadDirectory: String,
+    val addedOn: LocalDateTime = LocalDateTime.now(),
+    var folderName: String,
+    var status: Status = Status.STOPPED,
+    var done: Int = 0,
+    var rank: Int = Int.MAX_VALUE,
+    var size: Long = -1,
+    var downloaded: Long = 0,
+    val previews: List<String>,
+    val postedBy: String,
+    val resolvedNames: List<String>
+) {
+    fun getDownloadFolder(): String {
+        return Path(downloadDirectory, folderName).pathString
+    }
+}

vripper-core/src/main/kotlin/me/vripper/model/PostSelection.kt

@@ -0,0 +1,14 @@
+package me.vripper.model
+
+data class PostSelection(
+    val threadId: Long,
+    val threadTitle: String,
+    val postId: Long,
+    val number: Int,
+    val title: String,
+    val imageCount: Int,
+    val url: String,
+    val hosts: String,
+    val forum: String,
+    val previews: List<String>
+)

vripper-core/src/main/kotlin/me/vripper/model/QueueState.kt

@@ -0,0 +1,6 @@
+package me.vripper.model
+
+data class QueueState(
+    val running: Int,
+    val remaining: Int
+)

vripper-core/src/main/kotlin/me/vripper/model/Settings.kt

@@ -0,0 +1,48 @@
+package me.vripper.model
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Settings(
+    val connectionSettings: ConnectionSettings = ConnectionSettings(),
+    val downloadSettings: DownloadSettings = DownloadSettings(),
+    val viperSettings: ViperSettings = ViperSettings(),
+    val systemSettings: SystemSettings = SystemSettings()
+)
+
+@Serializable
+data class ViperSettings(
+    val login: Boolean = false,
+    val username: String = "",
+    val password: String = "",
+    val thanks: Boolean = false,
+    val host: String = "https://vipergirls.to",
+)
+
+@Serializable
+data class DownloadSettings(
+    val downloadPath: String = System.getProperty("user.home"),
+    val autoStart: Boolean = true,
+    val autoQueueThreshold: Int = 1,
+    val forceOrder: Boolean = false,
+    val forumSubDirectory: Boolean = false,
+    val threadSubLocation: Boolean = false,
+    val clearCompleted: Boolean = false,
+    val appendPostId: Boolean = false
+)
+
+@Serializable
+data class ConnectionSettings(
+    val maxConcurrentPerHost: Int = 2,
+    val maxGlobalConcurrent: Int = 0,
+    val timeout: Int = 30,
+    val maxAttempts: Int = 3,
+)
+
+@Serializable
+data class SystemSettings(
+    val tempPath: String = System.getProperty("java.io.tmpdir"),
+    val enableClipboardMonitoring: Boolean = false,
+    val clipboardPollingRate: Int = 500,
+    val maxEventLog: Int = 1_000,
+)

vripper-core/src/main/kotlin/me/vripper/model/Thread.kt

@@ -0,0 +1,5 @@
+package me.vripper.model
+
+import me.vripper.entities.ThreadEntity
+
+typealias Thread = ThreadEntity

vripper-core/src/main/kotlin/me/vripper/model/ThreadPostId.kt

@@ -0,0 +1,3 @@
+package me.vripper.model
+
+data class ThreadPostId(val threadId: Long, val postId: Long)

vripper-core/src/main/kotlin/me/vripper/parser/ImageItem.kt

@@ -0,0 +1,5 @@
+package me.vripper.parser
+
+import me.vripper.host.Host
+
+data class ImageItem(val mainLink: String, val thumbLink: String, val host: Host)

vripper-core/src/main/kotlin/me/vripper/parser/PostItem.kt

@@ -0,0 +1,15 @@
+package me.vripper.parser
+
+data class PostItem(
+    val threadId: Long,
+    val threadTitle: String,
+    val postId: Long,
+    val number: Int,
+    val title: String,
+    val imageCount: Int,
+    val url: String,
+    val hosts: List<Pair<String, Int>>,
+    val securityToken: String,
+    val forum: String,
+    val imageItemList: List<ImageItem>
+)

vripper-core/src/main/kotlin/me/vripper/parser/PostLookupAPIParser.kt

@@ -0,0 +1,74 @@
+package me.vripper.parser
+
+import me.vripper.entities.LogEntryEntity
+import me.vripper.exception.DownloadException
+import me.vripper.exception.PostParseException
+import me.vripper.services.*
+import me.vripper.utilities.Tasks
+import me.vripper.utilities.formatToString
+import net.jodah.failsafe.Failsafe
+import net.jodah.failsafe.function.CheckedSupplier
+import org.apache.hc.client5.http.classic.HttpClient
+import org.apache.hc.client5.http.classic.methods.HttpGet
+import org.apache.hc.core5.net.URIBuilder
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.inject
+import javax.xml.parsers.SAXParserFactory
+
+class PostLookupAPIParser(private val threadId: Long, private val postId: Long) : KoinComponent {
+    private val log by me.vripper.delegate.LoggerDelegate()
+    private val settingsService: SettingsService by inject()
+    private val retryPolicyService: RetryPolicyService by inject()
+    private val httpService: HTTPService by inject()
+    private val vgAuthService: VGAuthService by inject()
+    private val dataTransaction: DataTransaction by inject()
+
+    @Throws(PostParseException::class)
+    fun parse(): ThreadItem? {
+        log.debug("Parsing post $postId")
+        val httpGet =
+            HttpGet(URIBuilder("${settingsService.settings.viperSettings.host}/vr.php").also {
+                it.setParameter(
+                    "p", postId.toString()
+                )
+            }.build())
+        val threadLookupAPIResponseHandler = ThreadLookupAPIResponseHandler()
+        log.debug("Requesting {}", httpGet)
+        Tasks.increment()
+        return try {
+            Failsafe.with(retryPolicyService.buildGenericRetryPolicy<Any>()).onFailure {
+                log.error(
+                    "parsing failed for thread $threadId, post $postId", it.failure
+                )
+                dataTransaction.saveLog(
+                    LogEntryEntity(
+                        type = LogEntryEntity.Type.POST, status = LogEntryEntity.Status.ERROR, message = """
+                    Failed to process thread $threadId, post $postId
+                    ${it.failure.formatToString()}
+                    """.trimIndent()
+                    )
+                )
+            }.get(CheckedSupplier {
+                val connection: HttpClient = httpService.client
+                connection.execute(
+                    httpGet, vgAuthService.context
+                ) { response ->
+                    if (response.code / 100 != 2) {
+                        throw DownloadException("Unexpected response code '${response.code}' for $httpGet")
+                    }
+                    factory.newSAXParser()
+                        .parse(response.entity.content, threadLookupAPIResponseHandler)
+                    threadLookupAPIResponseHandler.result
+                }
+            })
+        } catch (e: Exception) {
+            throw PostParseException(e)
+        } finally {
+            Tasks.decrement()
+        }
+    }
+
+    companion object {
+        private val factory = SAXParserFactory.newInstance()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/parser/ThreadItem.kt

@@ -0,0 +1,10 @@
+package me.vripper.parser
+
+data class ThreadItem(
+    val threadId: Long,
+    val title: String,
+    val securityToken: String,
+    val forum: String,
+    val postItemList: List<PostItem>,
+    val error: String
+)

vripper-core/src/main/kotlin/me/vripper/parser/ThreadLookupAPIParser.kt

@@ -0,0 +1,78 @@
+package me.vripper.parser
+
+import me.vripper.entities.LogEntryEntity
+import me.vripper.exception.DownloadException
+import me.vripper.exception.PostParseException
+import me.vripper.services.*
+import me.vripper.utilities.Tasks
+import me.vripper.utilities.formatToString
+import net.jodah.failsafe.Failsafe
+import net.jodah.failsafe.function.CheckedSupplier
+import org.apache.hc.client5.http.classic.methods.HttpGet
+import org.apache.hc.core5.net.URIBuilder
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.inject
+import java.io.BufferedInputStream
+import java.util.*
+import javax.xml.parsers.SAXParserFactory
+
+class ThreadLookupAPIParser(private val threadId: Long) : KoinComponent {
+    private val log by me.vripper.delegate.LoggerDelegate()
+    private val cm: HTTPService by inject()
+    private val retryPolicyService: RetryPolicyService by inject()
+    private val vgAuthService: VGAuthService by inject()
+    private val settingsService: SettingsService by inject()
+    private val dataTransaction: DataTransaction by inject()
+
+    @Throws(PostParseException::class)
+    fun parse(): ThreadItem {
+        log.debug("Parsing thread $threadId")
+        val httpGet =
+            HttpGet(URIBuilder(settingsService.settings.viperSettings.host + "/vr.php").also {
+                it.setParameter(
+                    "t",
+                    threadId.toString()
+                )
+            }.build())
+        val threadLookupAPIResponseHandler = ThreadLookupAPIResponseHandler()
+        log.debug("Requesting {}", httpGet)
+        Tasks.increment()
+        return try {
+            Failsafe.with(retryPolicyService.buildGenericRetryPolicy<Any>()).onFailure {
+                log.error(
+                    "parsing failed for thread $threadId",
+                    it.failure
+                )
+                dataTransaction.saveLog(
+                    LogEntryEntity(
+                        type = LogEntryEntity.Type.THREAD, status = LogEntryEntity.Status.ERROR, message = """
+                    Failed to process thread $threadId
+                    ${it.failure.formatToString()}
+                    """.trimIndent()
+                    )
+                )
+            }.get(CheckedSupplier {
+                cm.client.execute(
+                    httpGet, vgAuthService.context
+                ) { response ->
+                    if (response.code / 100 != 2) {
+                        throw DownloadException("Unexpected response code '${response.code}' for $httpGet")
+                    }
+                    factory.newSAXParser().parse(
+                        BufferedInputStream(response.entity.content),
+                        threadLookupAPIResponseHandler
+                    )
+                    threadLookupAPIResponseHandler.result
+                }
+            })
+        } catch (e: Exception) {
+            throw PostParseException(e)
+        } finally {
+            Tasks.decrement()
+        }
+    }
+
+    companion object {
+        private val factory = SAXParserFactory.newInstance()
+    }
+}

vripper-core/src/main/kotlin/me/vripper/parser/ThreadLookupAPIResponseHandler.kt

@@ -0,0 +1,93 @@
+package me.vripper.parser
+
+import me.vripper.host.Host
+import me.vripper.services.SettingsService
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.inject
+import org.xml.sax.Attributes
+import org.xml.sax.helpers.DefaultHandler
+
+class ThreadLookupAPIResponseHandler : KoinComponent, DefaultHandler() {
+    private val supportedHosts: List<Host> = getKoin().getAll()
+    private val settingsService: SettingsService by inject()
+    private var error: String = ""
+    private val hostMap: MutableMap<Host, Int> = mutableMapOf()
+    private val postItemList: MutableList<PostItem> = mutableListOf()
+    private val imageItemList: MutableList<ImageItem> = mutableListOf()
+    private lateinit var threadItem: ThreadItem
+    private var threadId: Long = -1
+    private var threadTitle: String = ""
+    private var forum: String = ""
+    private var securityToken: String = ""
+    private var postId: Long = -1
+    private var postTitle: String = ""
+
+    private var postCounter: Int = 0
+    val result: ThreadItem
+        get() = threadItem
+
+    override fun startDocument() {}
+    override fun startElement(
+        uri: String, localName: String, qName: String, attributes: Attributes
+    ) {
+        when (qName.lowercase()) {
+            "error" -> error = attributes.getValue("details")
+            "thread" -> {
+                threadId = attributes.getValue("id")?.trim()?.toLong() ?: -1
+                threadTitle = attributes.getValue("title")?.trim() ?: ""
+            }
+
+            "forum" -> forum = attributes.getValue("title")?.trim() ?: ""
+            "user" -> securityToken = attributes.getValue("hash")?.trim() ?: ""
+            "post" -> {
+                postId = attributes.getValue("id")?.trim()?.toLong() ?: -1
+                postCounter = attributes.getValue("number")?.trim()?.toInt() ?: 0
+                val title = attributes.getValue("title")?.trim() ?: ""
+                postTitle = title.ifBlank { threadTitle }
+            }
+
+            "image" -> {
+                val mainLink = attributes.getValue("main_url")?.trim() ?: ""
+                val thumbLink = attributes.getValue("thumb_url")?.trim() ?: ""
+                val type = attributes.getValue("type")?.trim() ?: ""
+                if (type == "linked") {
+                    supportedHosts.firstOrNull {
+                        it.isSupported(mainLink)
+                    }?.also { host ->
+                        hostMap.computeIfAbsent(host) { 0 }
+                        hostMap[host] = hostMap[host]!! + 1
+                        imageItemList.add(ImageItem(mainLink, thumbLink, host))
+                    }
+                }
+            }
+        }
+    }
+
+    override fun endElement(uri: String, localName: String, qName: String) {
+        if ("post".equals(qName, true)) {
+            if (imageItemList.isNotEmpty()) {
+                postItemList.add(
+                    PostItem(
+                        threadId,
+                        threadTitle,
+                        postId,
+                        postCounter,
+                        postTitle,
+                        imageItemList.size,
+                        "${settingsService.settings.viperSettings.host}/threads/$threadId?p=$postId&viewfull=1#post$postId",
+                        hostMap.toMap().map { Pair(it.key.hostName, it.value) },
+                        securityToken,
+                        forum,
+                        imageItemList.toList()
+                    )
+                )
+            }
+            imageItemList.clear()
+            hostMap.clear()
+        }
+    }
+
+    override fun endDocument() {
+        threadItem = ThreadItem(threadId, threadTitle, securityToken, forum, postItemList.toList(), error)
+    }
+}

vripper-core/src/main/kotlin/me/vripper/repositories/ImageRepository.kt

@@ -0,0 +1,20 @@
+package me.vripper.repositories
+
+import me.vripper.entities.ImageEntity
+import java.util.*
+
+interface ImageRepository {
+    fun save(imageEntity: ImageEntity): ImageEntity
+    fun save(imageEntityList: List<ImageEntity>)
+    fun deleteAllByPostId(postId: Long)
+    fun findByPostId(postId: Long): List<ImageEntity>
+    fun countError(): Int
+    fun findByPostIdAndIsNotCompleted(postId: Long): List<ImageEntity>
+    fun stopByPostIdAndIsNotCompleted(postId: Long): Int
+    fun stopByPostIdAndIsNotCompleted(): Int
+    fun findByPostIdAndIsError(postId: Long): List<ImageEntity>
+    fun findById(id: Long): Optional<ImageEntity>
+    fun update(imageEntity: ImageEntity)
+    fun update(imageEntities: List<ImageEntity>)
+    fun deleteAllByPostId(postIds: List<Long>)
+}

vripper-core/src/main/kotlin/me/vripper/repositories/LogRepository.kt

@@ -0,0 +1,14 @@
+package me.vripper.repositories
+
+import me.vripper.entities.LogEntryEntity
+import java.util.*
+
+interface LogRepository {
+    fun save(logEntryEntity: LogEntryEntity): LogEntryEntity
+    fun update(logEntryEntity: LogEntryEntity)
+    fun findAll(): List<LogEntryEntity>
+    fun findById(id: Long): Optional<LogEntryEntity>
+
+    fun deleteOldest(): List<Long>
+    fun deleteAll()
+}

vripper-core/src/main/kotlin/me/vripper/repositories/MetadataRepository.kt

@@ -0,0 +1,11 @@
+package me.vripper.repositories
+
+import me.vripper.entities.MetadataEntity
+import java.util.*
+
+interface MetadataRepository {
+    fun save(metadataEntity: MetadataEntity): MetadataEntity
+    fun findByPostId(postId: Long): Optional<MetadataEntity>
+    fun deleteByPostId(postId: Long): Int
+    fun deleteAllByPostId(postIds: List<Long>)
+}

vripper-core/src/main/kotlin/me/vripper/repositories/PostDownloadStateRepository.kt

@@ -0,0 +1,21 @@
+package me.vripper.repositories
+
+import me.vripper.entities.PostEntity
+import java.util.*
+
+interface PostDownloadStateRepository {
+    fun save(postEntities: List<PostEntity>): List<PostEntity>
+    fun findByPostId(postId: Long): Optional<PostEntity>
+    fun findById(id: Long): Optional<PostEntity>
+    fun findCompleted(): List<Long>
+    fun findAll(): List<PostEntity>
+    fun existByPostId(postId: Long): Boolean
+    fun setDownloadingToStopped(): Int
+    fun deleteByPostId(postId: Long): Int
+    fun update(postEntity: PostEntity)
+    fun update(postEntities: List<PostEntity>)
+    fun findMaxRank(): Int?
+    fun deleteAll(postIds: List<Long>)
+    fun stopAll()
+    fun findAllNonCompletedPostIds(): List<Long>
+}

vripper-core/src/main/kotlin/me/vripper/repositories/ThreadRepository.kt

@@ -0,0 +1,14 @@
+package me.vripper.repositories
+
+import me.vripper.entities.ThreadEntity
+import java.util.*
+
+interface ThreadRepository {
+    fun save(threadEntity: ThreadEntity): ThreadEntity
+    fun update(threadEntity: ThreadEntity)
+    fun findByThreadId(threadId: Long): Optional<ThreadEntity>
+    fun findAll(): List<ThreadEntity>
+    fun findById(id: Long): Optional<ThreadEntity>
+    fun deleteByThreadId(threadId: Long): Int
+    fun deleteAll()
+}

vripper-core/src/main/kotlin/me/vripper/repositories/impl/ImageRepositoryImpl.kt

@@ -0,0 +1,174 @@
+package me.vripper.repositories.impl
+
+import me.vripper.entities.ImageEntity
+import me.vripper.entities.domain.Status
+import me.vripper.repositories.ImageRepository
+import me.vripper.tables.ImageTable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.transactions.TransactionManager
+import java.sql.Connection
+import java.util.*
+
+class ImageRepositoryImpl : ImageRepository {
+    override fun save(imageEntity: ImageEntity): ImageEntity {
+        val id = ImageTable.insertAndGetId {
+            it[downloaded] = imageEntity.downloaded
+            it[host] = imageEntity.host
+            it[index] = imageEntity.index
+            it[postId] = imageEntity.postId
+            it[status] = imageEntity.status.name
+            it[size] = imageEntity.size
+            it[url] = imageEntity.url
+            it[thumbUrl] = imageEntity.thumbUrl
+            it[postIdRef] = imageEntity.postIdRef
+            it[filename] = imageEntity.filename
+        }.value
+        return imageEntity.copy(id = id)
+    }
+
+    override fun save(imageEntityList: List<ImageEntity>) {
+        ImageTable.batchInsert(imageEntityList, shouldReturnGeneratedValues = false) {
+            this[ImageTable.downloaded] = it.downloaded
+            this[ImageTable.host] = it.host
+            this[ImageTable.index] = it.index
+            this[ImageTable.postId] = it.postId
+            this[ImageTable.status] = it.status.name
+            this[ImageTable.size] = it.size
+            this[ImageTable.url] = it.url
+            this[ImageTable.thumbUrl] = it.thumbUrl
+            this[ImageTable.postIdRef] = it.postIdRef
+            this[ImageTable.filename] = it.filename
+        }
+    }
+
+    override fun deleteAllByPostId(postId: Long) {
+        ImageTable.deleteWhere { ImageTable.postId eq postId }
+    }
+
+    override fun findByPostId(postId: Long): List<ImageEntity> {
+        return ImageTable.select {
+            ImageTable.postId eq postId
+        }.map(this::transform)
+    }
+
+    override fun countError(): Int {
+        return ImageTable
+            .slice(ImageTable.id)
+            .select { ImageTable.status eq Status.ERROR.name }
+            .count().toInt()
+    }
+
+    override fun findByPostIdAndIsNotCompleted(postId: Long): List<ImageEntity> {
+        return ImageTable
+            .select {
+                (ImageTable.postId eq postId) and (ImageTable.status neq Status.FINISHED.name)
+            }.map(this::transform)
+    }
+
+    override fun stopByPostIdAndIsNotCompleted(postId: Long): Int {
+        return ImageTable.update({ (ImageTable.postId eq postId) and (ImageTable.status neq Status.FINISHED.name) }) {
+            it[status] = Status.STOPPED.name
+        }
+    }
+
+    override fun stopByPostIdAndIsNotCompleted(): Int {
+        return ImageTable.update({ (ImageTable.status neq Status.FINISHED.name) }) {
+            it[status] = Status.STOPPED.name
+        }
+    }
+
+    override fun findByPostIdAndIsError(postId: Long): List<ImageEntity> {
+        return ImageTable.select {
+            (ImageTable.postId eq postId) and (ImageTable.status eq Status.ERROR.name)
+        }.map(this::transform)
+    }
+
+    override fun findById(id: Long): Optional<ImageEntity> {
+        val result = ImageTable.select {
+            ImageTable.id eq id
+        }.map(this::transform)
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun update(imageEntity: ImageEntity) {
+        ImageTable.update({ ImageTable.id eq imageEntity.id }) {
+            it[status] = imageEntity.status.name
+            it[downloaded] = imageEntity.downloaded
+            it[size] = imageEntity.size
+            it[filename] = imageEntity.filename
+        }
+    }
+
+    override fun update(imageEntities: List<ImageEntity>) {
+        ImageTable.batchUpsert(imageEntities, shouldReturnGeneratedValues = false) {
+            this[ImageTable.id] = it.id
+            this[ImageTable.downloaded] = it.downloaded
+            this[ImageTable.host] = it.host
+            this[ImageTable.index] = it.index
+            this[ImageTable.postId] = it.postId
+            this[ImageTable.status] = it.status.name
+            this[ImageTable.size] = it.size
+            this[ImageTable.url] = it.url
+            this[ImageTable.thumbUrl] = it.thumbUrl
+            this[ImageTable.postIdRef] = it.postIdRef
+            this[ImageTable.filename] = it.filename
+        }
+    }
+
+    override fun deleteAllByPostId(postIds: List<Long>) {
+        val conn = TransactionManager.current().connection.connection as Connection
+        conn.prepareStatement("CREATE LOCAL TEMPORARY TABLE IMAGES_DELETE(POST_ID BIGINT PRIMARY KEY)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("INSERT INTO IMAGES_DELETE VALUES ( ? )").use { ps ->
+            postIds.forEach {
+                ps.setLong(1, it)
+                ps.addBatch()
+            }
+            ps.executeBatch()
+        }
+
+        conn.prepareStatement("DELETE FROM IMAGE WHERE POST_ID IN (SELECT POST_ID FROM IMAGES_DELETE)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("TRUNCATE TABLE IMAGES_DELETE").use {
+            it.execute()
+        }
+    }
+
+    private fun transform(resultRow: ResultRow): ImageEntity {
+        val id = resultRow[ImageTable.id].value
+        val postId = resultRow[ImageTable.postId]
+        val url = resultRow[ImageTable.url]
+        val thumbUrl = resultRow[ImageTable.thumbUrl]
+        val host = resultRow[ImageTable.host]
+        val index = resultRow[ImageTable.index]
+        val current = resultRow[ImageTable.downloaded]
+        val total = resultRow[ImageTable.size]
+        val status = Status.valueOf(resultRow[ImageTable.status])
+        val postIdRef = resultRow[ImageTable.postIdRef]
+        val filename = resultRow[ImageTable.filename]
+        return ImageEntity(
+            id,
+            postId,
+            url,
+            thumbUrl,
+            host,
+            index,
+            postIdRef,
+            total,
+            current,
+            status,
+            filename
+        )
+    }
+}

vripper-core/src/main/kotlin/me/vripper/repositories/impl/LogRepositoryImpl.kt

@@ -0,0 +1,74 @@
+package me.vripper.repositories.impl
+
+import me.vripper.entities.LogEntryEntity
+import me.vripper.repositories.LogRepository
+import me.vripper.services.SettingsService
+import me.vripper.tables.LogTable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.notInSubQuery
+import java.util.*
+
+class LogRepositoryImpl(val settingsService: SettingsService) : LogRepository {
+
+    @Synchronized
+    override fun save(logEntryEntity: LogEntryEntity): LogEntryEntity {
+        val id = LogTable.insertAndGetId {
+            it[type] = logEntryEntity.type.name
+            it[status] = logEntryEntity.status.name
+            it[time] = logEntryEntity.time
+            it[message] = logEntryEntity.message.take(500)
+        }.value
+        return logEntryEntity.copy(id = id)
+    }
+
+    override fun update(logEntryEntity: LogEntryEntity) {
+        LogTable.update({ LogTable.id eq logEntryEntity.id }) {
+            it[type] = logEntryEntity.type.name
+            it[status] = logEntryEntity.status.name
+            it[message] = logEntryEntity.message.take(500)
+        }
+    }
+
+    override fun findById(id: Long): Optional<LogEntryEntity> {
+        val result = LogTable.select {
+            LogTable.id eq id
+        }.map(::transform)
+
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun findAll(): List<LogEntryEntity> {
+        return LogTable.selectAll().map(::transform)
+    }
+
+    override fun deleteOldest(): List<Long> {
+        val sub = LogTable.slice(LogTable.id).selectAll().orderBy(LogTable.time to SortOrder.DESC)
+            .limit(settingsService.settings.systemSettings.maxEventLog)
+        val ids = LogTable.select { LogTable.id notInSubQuery sub }.map { it[LogTable.id].value }
+        LogTable.deleteWhere { LogTable.id notInSubQuery sub }
+        return ids
+    }
+
+    override fun deleteAll() {
+        LogTable.deleteAll()
+    }
+
+    private fun transform(resultRow: ResultRow): LogEntryEntity {
+        val id = resultRow[LogTable.id].value
+        val type = LogEntryEntity.Type.valueOf(resultRow[LogTable.type])
+        val status = LogEntryEntity.Status.valueOf(resultRow[LogTable.status])
+        val time = resultRow[LogTable.time]
+        val message = resultRow[LogTable.message]
+        return LogEntryEntity(
+            id,
+            type,
+            status,
+            time,
+            message
+        )
+    }
+}

vripper-core/src/main/kotlin/me/vripper/repositories/impl/MetadataRepositoryImpl.kt

@@ -0,0 +1,75 @@
+package me.vripper.repositories.impl
+
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import me.vripper.entities.MetadataEntity
+import me.vripper.repositories.MetadataRepository
+import me.vripper.tables.MetadataTable
+import org.jetbrains.exposed.sql.ResultRow
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.insert
+import org.jetbrains.exposed.sql.select
+import org.jetbrains.exposed.sql.transactions.TransactionManager
+import java.sql.Connection
+import java.util.*
+
+class MetadataRepositoryImpl: MetadataRepository {
+
+    override fun save(metadataEntity: MetadataEntity): MetadataEntity {
+        MetadataTable.insert {
+            it[postId] = metadataEntity.postId
+            it[data] = Json.encodeToString(metadataEntity.data)
+        }
+
+        return metadataEntity
+    }
+
+    override fun findByPostId(postId: Long): Optional<MetadataEntity> {
+
+        val result = MetadataTable.select {
+            MetadataTable.postId eq postId
+        }.map(::transform)
+
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    private fun transform(row: ResultRow): MetadataEntity {
+        val id = row[MetadataTable.postId]
+        val data = Json.decodeFromString(row[MetadataTable.data]) as MetadataEntity.Data
+        return MetadataEntity(id, data)
+    }
+
+    override fun deleteByPostId(postId: Long): Int {
+        return MetadataTable.deleteWhere { MetadataTable.postId eq postId }
+    }
+
+    override fun deleteAllByPostId(postIds: List<Long>) {
+        val conn = TransactionManager.current().connection.connection as Connection
+        conn.prepareStatement("CREATE LOCAL TEMPORARY TABLE METADATA_DELETE(POST_ID BIGINT PRIMARY KEY)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("INSERT INTO METADATA_DELETE VALUES ( ? )").use { ps ->
+            postIds.forEach {
+                ps.setLong(1, it)
+                ps.addBatch()
+            }
+            ps.executeBatch()
+        }
+
+        conn.prepareStatement("DELETE FROM METADATA WHERE POST_ID IN (SELECT POST_ID FROM METADATA_DELETE)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("TRUNCATE TABLE METADATA_DELETE").use {
+            it.execute()
+        }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/repositories/impl/PostDownloadStateRepositoryImpl.kt

@@ -0,0 +1,205 @@
+package me.vripper.repositories.impl
+
+import me.vripper.entities.PostEntity
+import me.vripper.entities.domain.Status
+import me.vripper.repositories.PostDownloadStateRepository
+import me.vripper.tables.PostTable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.transactions.TransactionManager
+import java.sql.Connection
+import java.util.*
+
+class PostDownloadStateRepositoryImpl :
+    PostDownloadStateRepository {
+
+    private val delimiter = ";"
+
+    override fun save(postEntities: List<PostEntity>): List<PostEntity> {
+        return PostTable.batchInsert(postEntities, shouldReturnGeneratedValues = true) { post ->
+            this[PostTable.status] = post.status.name
+            this[PostTable.done] = post.done
+            this[PostTable.total] = post.total
+            this[PostTable.rank] = post.rank
+            this[PostTable.hosts] = post.hosts.joinToString(delimiter)
+            this[PostTable.outputPath] = post.downloadDirectory
+            this[PostTable.folderName] = post.folderName
+            this[PostTable.postId] = post.postId
+            this[PostTable.threadId] = post.threadId
+            this[PostTable.postTitle] = post.postTitle
+            this[PostTable.threadTitle] = post.threadTitle
+            this[PostTable.forum] = post.forum
+            this[PostTable.url] = post.url
+            this[PostTable.token] = post.token
+            this[PostTable.addedAt] = post.addedOn
+            this[PostTable.size] = post.size
+            this[PostTable.downloaded] = post.downloaded
+        }.map(::transform)
+    }
+
+    override fun findByPostId(postId: Long): Optional<PostEntity> {
+        val result = PostTable.select {
+            PostTable.postId eq postId
+        }.map(::transform)
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun findCompleted(): List<Long> {
+        return PostTable.slice(PostTable.postId).select {
+            (PostTable.status eq Status.FINISHED.name) and (PostTable.done greaterEq PostTable.total)
+        }.map { it[PostTable.postId] }
+    }
+
+    override fun findById(id: Long): Optional<PostEntity> {
+        val result = PostTable.select {
+            PostTable.id eq id
+        }.map { transform(it) }
+
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun findAll(): List<PostEntity> {
+        return PostTable.selectAll().map { transform(it) }
+    }
+
+    override fun existByPostId(postId: Long): Boolean {
+        return PostTable.slice(PostTable.id).select { PostTable.postId eq postId }.count() > 0
+    }
+
+    override fun setDownloadingToStopped(): Int {
+        return PostTable.update({ (PostTable.status eq Status.DOWNLOADING.name) or (PostTable.status eq Status.PENDING.name) }) {
+            it[status] = Status.STOPPED.name
+        }
+    }
+
+    override fun deleteByPostId(postId: Long): Int {
+        return PostTable.deleteWhere { PostTable.postId eq postId }
+    }
+
+    override fun update(postEntity: PostEntity) {
+        PostTable.update({ PostTable.id eq postEntity.id }) {
+            it[status] = postEntity.status.name
+            it[done] = postEntity.done
+            it[rank] = postEntity.rank
+            it[size] = postEntity.size
+            it[downloaded] = postEntity.downloaded
+            it[folderName] = postEntity.folderName
+        }
+    }
+
+    override fun update(postEntities: List<PostEntity>) {
+        PostTable.batchUpsert(postEntities, shouldReturnGeneratedValues = false) { post ->
+            this[PostTable.id] = post.id
+            this[PostTable.status] = post.status.name
+            this[PostTable.done] = post.done
+            this[PostTable.total] = post.total
+            this[PostTable.rank] = post.rank
+            this[PostTable.hosts] = post.hosts.joinToString(delimiter)
+            this[PostTable.outputPath] = post.downloadDirectory
+            this[PostTable.folderName] = post.folderName
+            this[PostTable.postId] = post.postId
+            this[PostTable.threadId] = post.threadId
+            this[PostTable.postTitle] = post.postTitle
+            this[PostTable.threadTitle] = post.threadTitle
+            this[PostTable.forum] = post.forum
+            this[PostTable.url] = post.url
+            this[PostTable.token] = post.token
+            this[PostTable.size] = post.size
+            this[PostTable.downloaded] = post.downloaded
+        }
+    }
+
+    override fun findMaxRank(): Int? {
+        return PostTable.slice(PostTable.rank.max())
+            .selectAll()
+            .firstOrNull()
+            ?.get(PostTable.rank.max())
+    }
+
+    override fun deleteAll(postIds: List<Long>) {
+        val conn = TransactionManager.current().connection.connection as Connection
+        conn.prepareStatement("CREATE LOCAL TEMPORARY TABLE POSTS_DELETE(POST_ID BIGINT PRIMARY KEY)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("INSERT INTO POSTS_DELETE VALUES ( ? )").use { ps ->
+            postIds.forEach {
+                ps.setLong(1, it)
+                ps.addBatch()
+            }
+            ps.executeBatch()
+        }
+
+        conn.prepareStatement("DELETE FROM POST WHERE POST_ID IN (SELECT POST_ID FROM POSTS_DELETE)")
+            .use {
+                it.execute()
+            }
+
+        conn.prepareStatement("TRUNCATE TABLE POSTS_DELETE").use {
+            it.execute()
+        }
+    }
+
+    override fun stopAll() {
+        PostTable.update {
+            it[status] = Status.STOPPED.name
+        }
+    }
+
+    override fun findAllNonCompletedPostIds(): List<Long> {
+        return PostTable.slice(PostTable.postId).select {
+            PostTable.status neq Status.FINISHED.name
+        }.map { it[PostTable.postId] }
+    }
+
+    private fun transform(resultRow: ResultRow): PostEntity {
+        val id = resultRow[PostTable.id].value
+        val status = Status.valueOf(resultRow[PostTable.status])
+        val postId = resultRow[PostTable.postId]
+        val threadId = resultRow[PostTable.threadId]
+        val postTitle = resultRow[PostTable.postTitle]
+        val threadTitle = resultRow[PostTable.threadTitle]
+        val forum = resultRow[PostTable.forum]
+        val url = resultRow[PostTable.url]
+        val token = resultRow[PostTable.token]
+        val done = resultRow[PostTable.done]
+        val total = resultRow[PostTable.total]
+        val hosts =
+            resultRow[PostTable.hosts].split(delimiter).dropLastWhile { it.isEmpty() }.toSet()
+        val downloadDirectory = resultRow[PostTable.outputPath]
+        val folderName = resultRow[PostTable.folderName]
+        val addedOn = resultRow[PostTable.addedAt]
+        val rank = resultRow[PostTable.rank]
+        val size = resultRow[PostTable.size]
+        val downloaded = resultRow[PostTable.downloaded]
+        return PostEntity(
+            id,
+            postTitle,
+            threadTitle,
+            forum,
+            url,
+            token,
+            postId,
+            threadId,
+            total,
+            hosts,
+            downloadDirectory,
+            addedOn,
+            folderName,
+            status,
+            done,
+            rank,
+            size,
+            downloaded
+        )
+    }
+}

vripper-core/src/main/kotlin/me/vripper/repositories/impl/ThreadRepositoryImpl.kt

@@ -0,0 +1,71 @@
+package me.vripper.repositories.impl
+
+import me.vripper.entities.ThreadEntity
+import me.vripper.repositories.ThreadRepository
+import me.vripper.tables.ThreadTable
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import java.util.*
+
+class ThreadRepositoryImpl : ThreadRepository {
+
+    override fun save(threadEntity: ThreadEntity): ThreadEntity {
+        val id = ThreadTable.insertAndGetId {
+            it[title] = threadEntity.title
+            it[total] = threadEntity.total
+            it[url] = threadEntity.link
+            it[threadId] = threadEntity.threadId
+        }.value
+        return threadEntity.copy(id = id)
+    }
+
+    override fun update(threadEntity: ThreadEntity) {
+        ThreadTable.update({ ThreadTable.id eq threadEntity.id }) {
+            it[title] = threadEntity.title
+            it[total] = threadEntity.total
+        }
+    }
+
+    override fun findByThreadId(threadId: Long): Optional<ThreadEntity> {
+        val result = ThreadTable.select {
+            ThreadTable.threadId eq threadId
+        }.map(this::transform)
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun findAll(): List<ThreadEntity> {
+        return ThreadTable.selectAll().map(this::transform)
+    }
+
+    override fun findById(id: Long): Optional<ThreadEntity> {
+        val result = ThreadTable.select {
+            ThreadTable.id eq id
+        }.map(this::transform)
+        return if (result.isEmpty()) {
+            Optional.empty()
+        } else {
+            Optional.of(result.first())
+        }
+    }
+
+    override fun deleteByThreadId(threadId: Long): Int {
+        return ThreadTable.deleteWhere { ThreadTable.threadId eq threadId }
+    }
+
+    override fun deleteAll() {
+        ThreadTable.deleteAll()
+    }
+
+    private fun transform(resultRow: ResultRow): ThreadEntity {
+        val id = resultRow[ThreadTable.id].value
+        val title = resultRow[ThreadTable.title]
+        val url = resultRow[ThreadTable.url]
+        val threadId = resultRow[ThreadTable.threadId]
+        val total = resultRow[ThreadTable.total]
+        return ThreadEntity(id, title, url, threadId, total)
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/AppEndpointService.kt

@@ -0,0 +1,338 @@
+package me.vripper.services
+
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.time.sample
+import me.vripper.download.DownloadService
+import me.vripper.entities.LogEntryEntity
+import me.vripper.entities.PostEntity
+import me.vripper.event.*
+import me.vripper.exception.PostParseException
+import me.vripper.model.*
+import me.vripper.tasks.AddPostRunnable
+import me.vripper.tasks.ThreadLookupRunnable
+import me.vripper.utilities.ApplicationProperties
+import me.vripper.utilities.GLOBAL_EXECUTOR
+import me.vripper.utilities.PathUtils
+import java.time.Duration
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.locks.ReentrantLock
+import java.util.regex.Pattern
+import kotlin.concurrent.withLock
+import kotlin.io.path.Path
+import kotlin.io.path.exists
+import kotlin.jvm.optionals.getOrNull
+
+class AppEndpointService(
+    private val downloadService: DownloadService,
+    private val dataTransaction: DataTransaction,
+    private val threadCacheService: ThreadCacheService,
+    private val settingsService: SettingsService,
+    private val vgAuthService: VGAuthService,
+) : IAppEndpointService {
+    private val log by me.vripper.delegate.LoggerDelegate()
+
+    private val lock = ReentrantLock()
+
+    override suspend fun scanLinks(postLinks: String) {
+        lock.withLock {
+            if (postLinks.isBlank()) {
+                return
+            }
+            val urlList = postLinks.split(Pattern.compile("\\r?\\n")).dropLastWhile { it.isEmpty() }.map { it.trim() }
+                .filter { it.isNotEmpty() }
+            for (link in urlList) {
+                log.debug("Starting to process thread: $link")
+                if (!link.startsWith(settingsService.settings.viperSettings.host)) {
+                    continue
+                }
+                var threadId: Long
+                var postId: Long?
+                val m = Pattern.compile(
+                    Pattern.quote(settingsService.settings.viperSettings.host) + "/threads/(\\d+)((.*p=)(\\d+))?"
+                ).matcher(link)
+                if (m.find()) {
+                    threadId = m.group(1).toLong()
+                    postId = m.group(4)?.toLong()
+                    if (postId == null) {
+                        CompletableFuture.runAsync(
+                            ThreadLookupRunnable(
+                                threadId, settingsService.settings
+                            ), GLOBAL_EXECUTOR
+                        )
+                    } else {
+                        CompletableFuture.runAsync(
+                            AddPostRunnable(
+                                listOf(ThreadPostId(threadId, postId))
+                            ), GLOBAL_EXECUTOR
+                        )
+                    }
+                } else {
+                    log.error("Cannot retrieve thread id from URL $link")
+                    dataTransaction.saveLog(
+                        LogEntryEntity(
+                            type = LogEntryEntity.Type.SCAN,
+                            status = LogEntryEntity.Status.ERROR,
+                            message = "Invalid link $link, link is missing the threadId"
+                        )
+                    )
+                    continue
+                }
+            }
+        }
+    }
+
+    override suspend fun restartAll(posIds: List<Long>) {
+        lock.withLock {
+            downloadService.restartAll(posIds.map { dataTransaction.findPostByPostId(it) }.filter { it.isPresent }
+                .map { it.get() })
+        }
+    }
+
+    override suspend fun download(posts: List<ThreadPostId>) {
+        CompletableFuture.runAsync(
+            AddPostRunnable(posts), GLOBAL_EXECUTOR
+        )
+    }
+
+    override suspend fun stopAll(postIdList: List<Long>) {
+        lock.withLock {
+            downloadService.stop(postIdList)
+        }
+    }
+
+    override suspend fun remove(postIdList: List<Long>) {
+        lock.withLock {
+            downloadService.stop(postIdList)
+            dataTransaction.removeAll(postIdList)
+        }
+    }
+
+    override suspend fun clearCompleted(): List<Long> {
+        lock.withLock {
+            return dataTransaction.clearCompleted()
+        }
+    }
+
+    override suspend fun grab(threadId: Long): List<PostSelection> {
+        lock.withLock {
+            return try {
+                val thread = dataTransaction.findThreadByThreadId(threadId).orElseThrow {
+                    PostParseException(
+                        String.format(
+                            "Unable to find links for threadId = %s", threadId
+                        )
+                    )
+                }
+                val threadLookupResult = threadCacheService[thread.threadId]
+                threadLookupResult.postItemList.map { postItem ->
+                    PostSelection(
+                        postItem.threadId,
+                        postItem.threadTitle,
+                        postItem.postId,
+                        postItem.number,
+                        postItem.title,
+                        postItem.imageCount,
+                        postItem.url,
+                        postItem.hosts.joinToString(", ") { "${it.first} (${it.second})" },
+                        postItem.forum,
+                        postItem.imageItemList.map { it.thumbLink })
+                }.ifEmpty {
+                    log.error(
+                        String.format(
+                            "Failed to get links for threadId = %s", threadId
+                        )
+                    )
+                    throw PostParseException(
+                        String.format(
+                            "Failed to get links for threadId = %s", threadId
+                        )
+                    )
+                }
+            } catch (e: Exception) {
+                throw PostParseException(
+                    String.format(
+                        "Failed to get links for threadId = %s, %s", threadId, e.message
+                    )
+                )
+            }
+        }
+    }
+
+    override suspend fun threadRemove(threadIdList: List<Long>) {
+        lock.withLock {
+            threadIdList.forEach {
+                dataTransaction.removeThread(it)
+            }
+        }
+    }
+
+    override suspend fun threadClear() {
+        lock.withLock {
+            dataTransaction.clearQueueLinks()
+        }
+    }
+
+    override suspend fun logClear() {
+        lock.withLock {
+            dataTransaction.deleteAllLogs()
+        }
+    }
+
+    override suspend fun renameToFirst(postIds: List<Long>) {
+        postIds.forEach { postId ->
+            dataTransaction
+                .findMetadataByPostId(postId)
+                .map { it.data.resolvedNames }
+                .filter { it.isNotEmpty() }
+                .getOrNull()?.let { rename(postId, it.first()) }
+        }
+    }
+
+    override suspend fun rename(postId: Long, newName: String) {
+        CompletableFuture.runAsync({
+            synchronized(postId.toString().intern()) {
+                dataTransaction.findPostByPostId(postId).ifPresent { post ->
+                    if (Path(post.downloadDirectory, post.folderName).exists()) {
+                        PathUtils.rename(
+                            dataTransaction.findImagesByPostId(postId), post.downloadDirectory, post.folderName, newName
+                        )
+                    }
+                    post.folderName = PathUtils.sanitize(newName)
+                    dataTransaction.updatePost(post)
+                }
+            }
+        }, GLOBAL_EXECUTOR)
+    }
+
+    override fun onNewPosts(): Flow<Post> =
+        EventBus.events.filterIsInstance(PostCreateEvent::class).map { it.postEntities.map(::mapper) }
+            .flatMapConcat { it.asFlow() }
+
+
+    override fun onUpdatePosts() =
+        EventBus.events.filterIsInstance(PostUpdateEvent::class).map { it.postEntities.map(::mapper) }
+            .flatMapConcat { it.asFlow() }
+
+
+    override fun onDeletePosts() =
+        EventBus.events.filterIsInstance(PostDeleteEvent::class).flatMapConcat { it.postIds.asFlow() }
+
+
+    override fun onUpdateMetadata() =
+        EventBus.events.filterIsInstance(MetadataUpdateEvent::class).map { it.metadataEntity }
+
+
+    override suspend fun findAllPosts(): List<Post> {
+        return dataTransaction.findAllPosts().map(::mapper)
+    }
+
+    private fun mapper(postEntity: PostEntity): Post {
+        val metadata: Metadata? = dataTransaction.findMetadataByPostId(postEntity.postId).orElse(null)
+        val images = dataTransaction.findImagesByPostId(postEntity.postId)
+        return Post(
+            postEntity.id,
+            postEntity.postTitle,
+            postEntity.threadTitle,
+            postEntity.forum,
+            postEntity.url,
+            postEntity.token,
+            postEntity.postId,
+            postEntity.threadId,
+            postEntity.total,
+            postEntity.hosts,
+            postEntity.downloadDirectory,
+            postEntity.addedOn,
+            postEntity.folderName,
+            postEntity.status,
+            postEntity.done,
+            postEntity.rank,
+            postEntity.size,
+            postEntity.downloaded,
+            images.take(4).map { it.thumbUrl },
+            metadata?.data?.postedBy ?: "",
+            metadata?.data?.resolvedNames ?: emptyList(),
+        )
+    }
+
+    override suspend fun findPost(postId: Long): Post {
+        return mapper(dataTransaction.findPostByPostId(postId).orElseThrow())
+    }
+
+    override suspend fun findImagesByPostId(postId: Long): List<Image> {
+        return dataTransaction.findImagesByPostId(postId)
+    }
+
+    override fun onUpdateImages(postId: Long): Flow<Image> = EventBus.events.filterIsInstance(ImageEvent::class).map {
+        it.imageEntities.filter { imageEntity: Image -> imageEntity.postId == postId }
+    }.filter { it.isNotEmpty() }.flatMapConcat { it.asFlow() }
+
+
+    override fun onStopped(): Flow<Long> =
+        EventBus.events.filterIsInstance(StoppedEvent::class).flatMapConcat { it.postIds.asFlow() }
+
+
+    override suspend fun findAllLogs(): List<LogEntry> {
+        return dataTransaction.findAllLogs()
+    }
+
+    override fun onNewLog() = EventBus.events.filterIsInstance(LogCreateEvent::class).map { it.logEntryEntity }
+
+
+    override fun onUpdateLog() = EventBus.events.filterIsInstance(LogUpdateEvent::class).map {
+        it.logEntryEntity
+    }
+
+
+    override fun onDeleteLogs(): Flow<Long> = EventBus.events.filterIsInstance(LogDeleteEvent::class).flatMapConcat {
+        it.deleted.asFlow()
+    }
+
+
+    override fun onNewThread(): Flow<Thread> =
+        EventBus.events.filterIsInstance(ThreadCreateEvent::class).map { it.threadEntity }
+
+
+    override fun onUpdateThread(): Flow<Thread> =
+        EventBus.events.filterIsInstance(ThreadUpdateEvent::class).map { it.threadEntity }
+
+
+    override fun onDeleteThread(): Flow<Long> =
+        EventBus.events.filterIsInstance(ThreadDeleteEvent::class).map { it.threadId }
+
+
+    override fun onClearThreads(): Flow<Unit> = EventBus.events.filterIsInstance(ThreadClearEvent::class).map { }
+
+
+    override suspend fun findAllThreads(): List<Thread> {
+        return dataTransaction.findAllThreads()
+    }
+
+    override fun onDownloadSpeed(): Flow<Long> =
+        EventBus.events.filterIsInstance(DownloadSpeedEvent::class).map { it.downloadSpeed.speed }
+
+    override fun onVGUserUpdate(): Flow<String> =
+        EventBus.events.filterIsInstance(VGUserLoginEvent::class).map { it.username }
+
+    override fun onQueueStateUpdate(): Flow<QueueState> =
+        EventBus.events.filterIsInstance(QueueStateEvent::class).map { it.queueState }
+
+    override fun onErrorCountUpdate(): Flow<Int> =
+        EventBus.events.filterIsInstance(ErrorCountEvent::class).map { it.errorCount.count }
+
+    override fun onTasksRunning(): Flow<Boolean> =
+        EventBus.events.filterIsInstance(LoadingTasks::class).sample(Duration.ofMillis(500)).map { it.loading }
+
+    override suspend fun getSettings(): Settings = settingsService.settings
+
+    override suspend fun saveSettings(settings: Settings) = settingsService.newSettings(settings)
+
+    override suspend fun getProxies(): List<String> = settingsService.getProxies()
+
+    override fun onUpdateSettings(): Flow<Settings> =
+        EventBus.events.filterIsInstance(SettingsUpdateEvent::class).map { it.settings }
+
+    override suspend fun loggedInUser(): String = vgAuthService.loggedUser
+
+    override suspend fun getVersion(): String = ApplicationProperties.VERSION
+
+}

vripper-core/src/main/kotlin/me/vripper/services/DataTransaction.kt

@@ -0,0 +1,319 @@
+package me.vripper.services
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import me.vripper.entities.*
+import me.vripper.entities.domain.Status
+import me.vripper.event.*
+import me.vripper.model.ErrorCount
+import me.vripper.parser.PostItem
+import me.vripper.repositories.*
+import me.vripper.utilities.PathUtils
+import me.vripper.utilities.PathUtils.sanitize
+import org.jetbrains.exposed.sql.transactions.transaction
+import java.util.*
+import kotlin.io.path.pathString
+
+class DataTransaction(
+    private val settingsService: SettingsService,
+    private val postDownloadStateRepository: PostDownloadStateRepository,
+    private val imageRepository: ImageRepository,
+    private val threadRepository: ThreadRepository,
+    private val metadataRepository: MetadataRepository,
+    private val logRepository: LogRepository,
+    private val eventBus: EventBus,
+) {
+
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    private fun save(postEntities: List<PostEntity>): List<PostEntity> {
+        return transaction { postDownloadStateRepository.save(postEntities) }
+    }
+
+    fun updatePosts(postEntities: List<PostEntity>) {
+        transaction { postDownloadStateRepository.update(postEntities) }
+        coroutineScope.launch {
+            eventBus.publishEvent(PostUpdateEvent(postEntities))
+        }
+    }
+
+    fun updatePost(postEntity: PostEntity) {
+        transaction { postDownloadStateRepository.update(postEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(PostUpdateEvent(listOf(postEntity)))
+        }
+    }
+
+    fun save(threadEntity: ThreadEntity) {
+        val savedThread = transaction { threadRepository.save(threadEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(ThreadCreateEvent(savedThread))
+        }
+    }
+
+    fun update(threadEntity: ThreadEntity) {
+        transaction { threadRepository.update(threadEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(ThreadUpdateEvent(threadEntity))
+        }
+    }
+
+    fun updateImages(imageEntities: List<ImageEntity>) {
+        transaction { imageRepository.update(imageEntities) }
+        coroutineScope.launch {
+            eventBus.publishEvent(ImageEvent(imageEntities))
+        }
+    }
+
+    fun updateImage(imageEntity: ImageEntity) {
+        transaction { imageRepository.update(imageEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(ImageEvent(listOf(imageEntity)))
+        }
+    }
+
+    fun exists(postId: Long): Boolean {
+        return transaction { postDownloadStateRepository.existByPostId(postId) }
+    }
+
+    @Synchronized
+    fun newPosts(postItems: List<PostItem>): List<PostEntity> {
+        var queuePosition = transaction {
+            getQueuePosition()?.plus(1) ?: 0
+        }
+
+        val posts = postItems.associate { postItem ->
+            val postEntity = PostEntity(
+                postTitle = postItem.title,
+                url = postItem.url,
+                token = postItem.securityToken,
+                postId = postItem.postId,
+                threadId = postItem.threadId,
+                total = postItem.imageCount,
+                hosts = postItem.hosts.map { "${it.first} (${it.second})" }.toSet(),
+                threadTitle = postItem.threadTitle,
+                forum = postItem.forum,
+                rank = queuePosition++,
+                downloadDirectory = PathUtils.calculateDownloadPath(
+                    postItem.forum,
+                    postItem.threadTitle,
+                    settingsService.settings
+                ).pathString,
+                folderName = if (settingsService.settings.downloadSettings.appendPostId) "${sanitize(postItem.title)}_${postItem.postId}" else sanitize(
+                    postItem.title
+                )
+            )
+            val imageEntities = postItem.imageItemList.mapIndexed { index, imageItem ->
+                ImageEntity(
+                    postId = postItem.postId,
+                    url = imageItem.mainLink,
+                    thumbUrl = imageItem.thumbLink,
+                    host = imageItem.host.hostId,
+                    index = index,
+                )
+            }
+            Pair(postEntity, imageEntities)
+        }
+
+
+        val savedPosts = transaction {
+            val savedPosts = save(posts.keys.toList())
+            savedPosts.associateWith {
+                posts[it]!!
+            }.forEach { (key, value) ->
+                save(value.map { it.copy(postIdRef = key.id) })
+            }
+            savedPosts
+        }
+        coroutineScope.launch {
+            eventBus.publishEvent(PostCreateEvent(savedPosts))
+        }
+        return savedPosts
+    }
+
+    private fun getQueuePosition(): Int? {
+        return postDownloadStateRepository.findMaxRank()
+    }
+
+    private fun save(imageEntities: List<ImageEntity>) {
+        transaction { imageRepository.save(imageEntities) }
+    }
+
+    fun finishPost(postId: Long, automatic: Boolean = false) {
+        val post = findPostByPostId(postId).orElseThrow()
+        val imagesInErrorStatus = findByPostIdAndIsError(post.postId)
+        if (imagesInErrorStatus.isNotEmpty()) {
+            post.status = Status.ERROR
+            updatePost(post)
+        } else {
+            if (post.done < post.total) {
+                post.status = Status.STOPPED
+                updatePost(post)
+            } else {
+                post.status = Status.FINISHED
+                transaction {
+                    updatePost(post)
+                    if (settingsService.settings.downloadSettings.clearCompleted && automatic) {
+                        remove(listOf(post.postId))
+                    }
+                }
+            }
+        }
+    }
+
+    private fun findByPostIdAndIsError(postId: Long): List<ImageEntity> {
+        return transaction { imageRepository.findByPostIdAndIsError(postId) }
+
+    }
+
+    private fun remove(postIds: List<Long>) {
+
+        transaction {
+            metadataRepository.deleteAllByPostId(postIds)
+            imageRepository.deleteAllByPostId(postIds)
+            postDownloadStateRepository.deleteAll(postIds)
+            sortPostsByRank()
+        }
+
+        coroutineScope.launch {
+            eventBus.publishEvent(PostDeleteEvent(postIds = postIds))
+        }
+        coroutineScope.launch {
+            eventBus.publishEvent(ErrorCountEvent(ErrorCount(countImagesInError())))
+        }
+    }
+
+    fun removeThread(threadId: Long) {
+        transaction { threadRepository.deleteByThreadId(threadId) }
+        coroutineScope.launch {
+            eventBus.publishEvent(ThreadDeleteEvent(threadId))
+        }
+    }
+
+    fun clearCompleted(): List<Long> {
+        val completed = transaction { postDownloadStateRepository.findCompleted() }
+        remove(completed)
+        return completed
+    }
+
+    fun removeAll(postIds: List<Long> = emptyList()) {
+        if (postIds.isNotEmpty()) {
+            remove(postIds)
+        } else {
+            remove(findAllPosts().map(PostEntity::postId))
+        }
+    }
+
+    fun stopImagesByPostIdAndIsNotCompleted(postId: Long) {
+        transaction { imageRepository.stopByPostIdAndIsNotCompleted(postId) }
+    }
+
+    fun saveMetadata(metadataEntity: MetadataEntity) {
+        transaction { metadataRepository.save(metadataEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(MetadataUpdateEvent(metadataEntity))
+        }
+    }
+
+    fun clearQueueLinks() {
+        transaction { threadRepository.deleteAll() }
+        coroutineScope.launch {
+            eventBus.publishEvent(ThreadClearEvent())
+        }
+    }
+
+    @Synchronized
+    fun sortPostsByRank() {
+        val postEntities = findAllPosts().sortedWith(Comparator.comparing(PostEntity::addedOn))
+        for (i in postEntities.indices) {
+            postEntities[i].rank = i
+        }
+        updatePosts(postEntities)
+    }
+
+    fun setDownloadingToStopped() {
+        transaction { postDownloadStateRepository.setDownloadingToStopped() }
+    }
+
+    fun findAllPosts(): List<PostEntity> {
+        return transaction { postDownloadStateRepository.findAll() }
+    }
+
+    fun findPostById(id: Long): Optional<PostEntity> {
+        return transaction { postDownloadStateRepository.findById(id) }
+    }
+
+    fun findImagesByPostId(postId: Long): List<ImageEntity> {
+        return transaction { imageRepository.findByPostId(postId) }
+    }
+
+    fun findImageById(id: Long): Optional<ImageEntity> {
+        return transaction { imageRepository.findById(id) }
+    }
+
+    fun findAllThreads(): List<ThreadEntity> {
+        return transaction { threadRepository.findAll() }
+    }
+
+    fun findThreadById(id: Long): Optional<ThreadEntity> {
+        return transaction {
+            threadRepository.findById(id)
+        }
+    }
+
+    fun findByPostIdAndIsNotCompleted(postId: Long): List<ImageEntity> {
+        return transaction { imageRepository.findByPostIdAndIsNotCompleted(postId) }
+    }
+
+    fun countImagesInError(): Int {
+        return transaction { imageRepository.countError() }
+    }
+
+    fun findPostByPostId(postId: Long): Optional<PostEntity> {
+        return transaction { postDownloadStateRepository.findByPostId(postId) }
+    }
+
+    fun findThreadByThreadId(threadId: Long): Optional<ThreadEntity> {
+        return transaction { threadRepository.findByThreadId(threadId) }
+    }
+
+    fun saveLog(logEntryEntity: LogEntryEntity): LogEntryEntity {
+        val pair = transaction {
+            val saved = logRepository.save(logEntryEntity)
+            val deleted = logRepository.deleteOldest()
+            Pair(saved, deleted)
+        }
+        coroutineScope.launch {
+            eventBus.publishEvent(LogCreateEvent(pair.first))
+        }
+        coroutineScope.launch {
+            eventBus.publishEvent(LogDeleteEvent(pair.second))
+        }
+        return pair.first
+    }
+
+    fun updateLog(logEntryEntity: LogEntryEntity) {
+        transaction { logRepository.update(logEntryEntity) }
+        coroutineScope.launch {
+            eventBus.publishEvent(LogUpdateEvent(logEntryEntity))
+        }
+    }
+
+    fun deleteAllLogs() {
+        transaction { logRepository.deleteAll() }
+    }
+
+    fun findAllLogs(): List<LogEntryEntity> {
+        return transaction { logRepository.findAll() }
+    }
+
+    fun findAllNonCompletedPostIds(): List<Long> {
+        return transaction { postDownloadStateRepository.findAllNonCompletedPostIds() }
+    }
+
+    fun findMetadataByPostId(postId: Long): Optional<MetadataEntity> {
+        return transaction { metadataRepository.findByPostId(postId) }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/DownloadSpeedService.kt

@@ -0,0 +1,52 @@
+package me.vripper.services
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.filterIsInstance
+import me.vripper.event.DownloadSpeedEvent
+import me.vripper.event.EventBus
+import me.vripper.event.QueueStateEvent
+import me.vripper.model.DownloadSpeed
+import java.util.concurrent.atomic.AtomicLong
+
+class DownloadSpeedService(
+    private val eventBus: EventBus,
+) {
+
+    companion object {
+        const val DOWNLOAD_POLL_RATE = 2500
+    }
+
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+    private val bytesCount = AtomicLong(0)
+    private var job: Job? = null
+
+    init {
+        coroutineScope.launch {
+            eventBus.events.filterIsInstance(QueueStateEvent::class).collect {
+                if (it.queueState.running + it.queueState.remaining > 0) {
+                    if (job == null || job?.isActive == false) {
+                        job = coroutineScope.launch {
+                            eventBus.publishEvent(DownloadSpeedEvent(DownloadSpeed(0L)))
+                            while (isActive) {
+                                delay(DOWNLOAD_POLL_RATE.toLong())
+                                val newValue = bytesCount.getAndSet(0)
+
+                                eventBus.publishEvent(DownloadSpeedEvent(DownloadSpeed(((newValue * 1000) / DOWNLOAD_POLL_RATE))))
+                            }
+                        }
+                    }
+                } else {
+                    job?.cancel()
+                    coroutineScope.launch {
+                        delay(DOWNLOAD_POLL_RATE + 500L)
+                        eventBus.publishEvent(DownloadSpeedEvent(DownloadSpeed(0L)))
+                    }
+                }
+            }
+        }
+    }
+
+    fun reportDownloadedBytes(count: Long) {
+        bytesCount.addAndGet(count)
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/HTTPService.kt

@@ -0,0 +1,100 @@
+package me.vripper.services
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.filterIsInstance
+import me.vripper.event.EventBus
+import me.vripper.event.SettingsUpdateEvent
+import org.apache.hc.client5.http.config.ConnectionConfig
+import org.apache.hc.client5.http.config.RequestConfig
+import org.apache.hc.client5.http.cookie.StandardCookieSpec
+import org.apache.hc.client5.http.impl.DefaultRedirectStrategy
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient
+import org.apache.hc.client5.http.impl.classic.HttpClients
+import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager
+import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder
+import org.apache.hc.core5.pool.PoolConcurrencyPolicy
+import org.apache.hc.core5.pool.PoolReusePolicy
+import org.apache.hc.core5.util.TimeValue
+import org.apache.hc.core5.util.Timeout
+
+class HTTPService(
+    private val eventBus: EventBus,
+    settingsService: SettingsService
+) {
+
+    companion object {
+        const val USER_AGENT =
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/118.0"
+    }
+
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    private lateinit var pcm: PoolingHttpClientConnectionManager
+    private lateinit var rc: RequestConfig
+    private lateinit var cc: ConnectionConfig
+    lateinit var client: CloseableHttpClient
+    private var connectionTimeout = settingsService.settings.connectionSettings.timeout
+
+    init {
+        buildRequestConfig()
+        buildConnectionConfig()
+        buildConnectionPool()
+        buildClientBuilder()
+        coroutineScope.launch {
+            pcm.closeIdle(TimeValue.ofSeconds(60))
+            delay(15000)
+        }
+        coroutineScope.launch {
+            eventBus
+                .events
+                .filterIsInstance(SettingsUpdateEvent::class)
+                .collect {
+                    if (connectionTimeout != it.settings.connectionSettings.timeout) {
+                        connectionTimeout = it.settings.connectionSettings.timeout
+                        client.close()
+                        pcm.close()
+                        buildRequestConfig()
+                        buildConnectionConfig()
+                        buildConnectionPool()
+                        buildClientBuilder()
+                    }
+                }
+        }
+    }
+
+    private fun buildConnectionPool() {
+        pcm = PoolingHttpClientConnectionManagerBuilder.create()
+            .setPoolConcurrencyPolicy(PoolConcurrencyPolicy.STRICT)
+            .setConnPoolPolicy(PoolReusePolicy.LIFO)
+            .setDefaultConnectionConfig(cc)
+            .setMaxConnTotal(Int.MAX_VALUE)
+            .setMaxConnPerRoute(Int.MAX_VALUE)
+            .build()
+    }
+
+    private fun buildRequestConfig() {
+        rc = RequestConfig.custom()
+            .setConnectionRequestTimeout(Timeout.ofSeconds(connectionTimeout.toLong()))
+            .setCookieSpec(StandardCookieSpec.RELAXED)
+            .build()
+    }
+
+    private fun buildConnectionConfig() {
+        cc = ConnectionConfig.custom()
+            .setConnectTimeout(Timeout.ofSeconds(connectionTimeout.toLong()))
+            .setSocketTimeout(Timeout.ofSeconds(connectionTimeout.toLong()))
+            .setTimeToLive(TimeValue.ofMinutes(10))
+            .build()
+    }
+
+    private fun buildClientBuilder() {
+        client = HttpClients.custom()
+            .setConnectionManager(pcm)
+            .setRedirectStrategy(DefaultRedirectStrategy.INSTANCE)
+            .setUserAgent(USER_AGENT)
+            .disableAutomaticRetries()
+            .setDefaultRequestConfig(rc)
+            .build()
+
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/IAppEndpointService.kt

@@ -0,0 +1,48 @@
+package me.vripper.services
+
+import kotlinx.coroutines.flow.Flow
+import me.vripper.model.*
+
+interface IAppEndpointService {
+    suspend fun scanLinks(postLinks: String)
+    suspend fun restartAll(posIds: List<Long> = listOf())
+    suspend fun remove(postIdList: List<Long>)
+    suspend fun stopAll(postIdList: List<Long> = emptyList())
+    suspend fun clearCompleted(): List<Long>
+    suspend fun findPost(postId: Long): Post
+    suspend fun findAllPosts(): List<Post>
+    suspend fun rename(postId: Long, newName: String)
+    fun onNewPosts(): Flow<Post>
+    fun onUpdatePosts(): Flow<Post>
+    fun onDeletePosts(): Flow<Long>
+    fun onUpdateMetadata(): Flow<Metadata>
+    suspend fun findImagesByPostId(postId: Long): List<Image>
+    fun onUpdateImages(postId: Long): Flow<Image>
+    fun onStopped(): Flow<Long>
+    suspend fun logClear()
+    suspend fun findAllLogs(): List<LogEntry>
+    fun onNewLog(): Flow<LogEntry>
+    fun onUpdateLog(): Flow<LogEntry>
+    fun onDeleteLogs(): Flow<Long>
+    fun onNewThread(): Flow<Thread>
+    fun onUpdateThread(): Flow<Thread>
+    fun onDeleteThread(): Flow<Long>
+    fun onClearThreads(): Flow<Unit>
+    suspend fun findAllThreads(): List<Thread>
+    suspend fun threadRemove(threadIdList: List<Long>)
+    suspend fun threadClear()
+    suspend fun grab(threadId: Long): List<PostSelection>
+    suspend fun download(posts: List<ThreadPostId>)
+    fun onDownloadSpeed(): Flow<Long>
+    fun onVGUserUpdate(): Flow<String>
+    fun onQueueStateUpdate(): Flow<QueueState>
+    fun onErrorCountUpdate(): Flow<Int>
+    fun onTasksRunning(): Flow<Boolean>
+    suspend fun getSettings(): Settings
+    suspend fun saveSettings(settings: Settings)
+    suspend fun getProxies(): List<String>
+    fun onUpdateSettings(): Flow<Settings>
+    suspend fun loggedInUser(): String
+    suspend fun getVersion(): String
+    suspend fun renameToFirst(postIds: List<Long>)
+}

vripper-core/src/main/kotlin/me/vripper/services/MetadataService.kt

@@ -0,0 +1,113 @@
+package me.vripper.services
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.withPermit
+import me.vripper.entities.MetadataEntity
+import me.vripper.exception.DownloadException
+import me.vripper.exception.VripperException
+import me.vripper.utilities.HtmlUtils
+import me.vripper.utilities.RequestLimit
+import me.vripper.utilities.Tasks
+import me.vripper.utilities.XpathUtils
+import org.apache.hc.client5.http.classic.methods.HttpGet
+import org.apache.hc.core5.net.URIBuilder
+import org.w3c.dom.Node
+import java.util.concurrent.atomic.AtomicBoolean
+import java.util.stream.Collectors
+
+class MetadataService(
+    private val httpService: HTTPService,
+    private val settingsService: SettingsService,
+    private val dataTransaction: DataTransaction,
+    private val vgAuthService: VGAuthService,
+) {
+
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+    private val dictionary: List<String> = mutableListOf("download", "link", "rapidgator", "filefactory", "filefox")
+
+    fun init() {
+        dataTransaction.findAllPosts().filter { dataTransaction.findMetadataByPostId(it.postId).isEmpty }
+            .map { it.postId }.forEach(::fetchMetadata)
+    }
+
+    fun fetchMetadata(postId: Long) {
+        Tasks.increment()
+        coroutineScope.launch {
+            RequestLimit.semaphore.withPermit {
+                try {
+                    val httpGet = HttpGet(URIBuilder(settingsService.settings.viperSettings.host + "/threads/").also {
+                        it.setParameter(
+                            "p", postId.toString()
+                        )
+                    }.build())
+
+                    val metadataEntity = httpService.client.execute(httpGet, vgAuthService.context) {
+                        if (it.code / 100 != 2) {
+                            throw DownloadException("Unexpected response code '${it.code}' for $httpGet")
+                        }
+                        val document = HtmlUtils.clean(it.entity.content)
+                        val postNode: Node = XpathUtils.getAsNode(
+                            document,
+                            "//li[@id='post_$postId']/div[contains(@class, 'postdetails')]",
+
+                            ) ?: throw VripperException("Unable to find post #'$postId'")
+
+                        val postedBy: String = XpathUtils.getAsNode(
+                            postNode, "./div[contains(@class, 'userinfo')]//a[contains(@class, 'username')]//font"
+                        )?.textContent?.trim()
+                            ?: throw VripperException("Unable to find the poster for post #'$postId'")
+
+
+                        val node: Node = XpathUtils.getAsNode(
+                            document, java.lang.String.format("//div[@id='post_message_%s']", postId)
+                        ) ?: throw VripperException("Unable to locate post content")
+                        val titles = findTitleInContent(node)
+                        MetadataEntity(postId, MetadataEntity.Data(postedBy, titles))
+                    }
+                    try {
+                        dataTransaction.saveMetadata(metadataEntity)
+                    } catch (e: Exception) {
+                        e.printStackTrace()
+                    }
+                } finally {
+                    Tasks.decrement()
+                }
+            }
+        }
+    }
+
+    private fun findTitleInContent(node: Node): List<String> {
+        val altTitle: MutableList<String> = mutableListOf()
+        findTitle(node, altTitle, AtomicBoolean(true))
+        return altTitle.stream().distinct().collect(Collectors.toList())
+    }
+
+    private fun findTitle(node: Node, altTitle: MutableList<String>, keepGoing: AtomicBoolean) {
+        if (!keepGoing.get()) {
+            return
+        }
+        if (node.nodeName == "a" || node.nodeName == "img") {
+            keepGoing.set(false)
+            return
+        }
+        if (node.nodeType == Node.ELEMENT_NODE) {
+            for (i in 0 until node.childNodes.length) {
+                val item = node.childNodes.item(i)
+                findTitle(item, altTitle, keepGoing)
+                if (!keepGoing.get()) {
+                    return
+                }
+            }
+        } else if (node.nodeType == Node.TEXT_NODE) {
+            val text = node.textContent.trim()
+            if (text.isNotBlank() && dictionary.stream().noneMatch { e ->
+                    text.lowercase().contains(e.lowercase())
+                }) {
+                altTitle.add(text)
+            }
+        }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/RetryPolicyService.kt

@@ -0,0 +1,43 @@
+package me.vripper.services
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.filterIsInstance
+import kotlinx.coroutines.launch
+import me.vripper.event.EventBus
+import me.vripper.event.SettingsUpdateEvent
+import net.jodah.failsafe.RetryPolicy
+import net.jodah.failsafe.event.ExecutionAttemptedEvent
+import java.time.temporal.ChronoUnit
+
+class RetryPolicyService(
+    val eventBus: EventBus, settingsService: SettingsService
+) {
+    private val log by me.vripper.delegate.LoggerDelegate()
+    private var maxAttempts: Int = settingsService.settings.connectionSettings.maxAttempts
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    init {
+        coroutineScope.launch {
+            eventBus.events.filterIsInstance(SettingsUpdateEvent::class).collect {
+                if (maxAttempts != it.settings.connectionSettings.maxAttempts) {
+                    maxAttempts = it.settings.connectionSettings.maxAttempts
+                }
+            }
+        }
+    }
+
+    fun <T> buildRetryPolicyForDownload(): RetryPolicy<T> {
+        return RetryPolicy<T>().withDelay(2, 5, ChronoUnit.SECONDS).withMaxAttempts(maxAttempts).onFailedAttempt {
+                log.warn("#${it.attemptCount} tries failed", it.lastFailure)
+            }
+    }
+
+    fun <T> buildGenericRetryPolicy(): RetryPolicy<T> {
+        return RetryPolicy<T>().withDelay(2, 5, ChronoUnit.SECONDS).withMaxAttempts(maxAttempts)
+            .onFailedAttempt { e: ExecutionAttemptedEvent<T> ->
+                log.warn("#${e.attemptCount} tries failed", e.lastFailure)
+            }
+    }
+}

vripper-core/src/main/kotlin/me/vripper/services/SettingsService.kt

@@ -0,0 +1,201 @@
+package me.vripper.services
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
+import me.vripper.event.EventBus
+import me.vripper.event.SettingsUpdateEvent
+import me.vripper.exception.ValidationException
+import me.vripper.model.Settings
+import me.vripper.utilities.ApplicationProperties.VRIPPER_DIR
+import org.apache.commons.codec.digest.DigestUtils
+import java.io.FileWriter
+import java.nio.file.*
+import kotlin.io.path.readText
+
+class SettingsService(private val eventBus: EventBus) {
+
+    private val log by me.vripper.delegate.LoggerDelegate()
+    private val configPath = VRIPPER_DIR.resolve("config.json")
+    private val customProxiesPath = VRIPPER_DIR.resolve("proxies.json")
+    private val proxies: MutableSet<String> = HashSet()
+    private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    private val json = Json {
+        encodeDefaults = true
+        prettyPrint = true
+        ignoreUnknownKeys = true
+    }
+    var settings = Settings()
+
+    init {
+        init()
+    }
+
+    private fun init() {
+        loadViperProxies()
+        restore()
+        coroutineScope.launch {
+            eventBus.publishEvent(SettingsUpdateEvent(settings))
+        }
+
+    }
+
+    private fun loadViperProxies() {
+        try {
+            SettingsService::class.java.getResourceAsStream("/proxies.json")?.use {
+                val defaultProxies: List<String> = json.decodeFromStream(it)
+                val customProxies: List<String> = if (customProxiesPath.toFile()
+                        .exists() && Files.isRegularFile(customProxiesPath)
+                ) {
+                    try {
+                        json.decodeFromString(
+                            customProxiesPath.readText()
+                        )
+                    } catch (e: Exception) {
+                        e.printStackTrace()
+                        emptyList()
+                    }
+                } else {
+                    try {
+                        FileWriter(customProxiesPath.toFile()).use { fw ->
+                            fw.append("[]").append(System.lineSeparator())
+                            fw.flush()
+                        }
+                    } catch (e: Exception) {
+                        log.warn(
+                            "Unable to create " + customProxiesPath.toFile().absolutePath, e
+                        )
+                    }
+                    emptyList()
+                }
+
+                proxies.addAll(defaultProxies)
+                proxies.addAll(customProxies)
+            }
+        } catch (e: Exception) {
+            log.error("Failed to load vipergirls proxies list", e)
+        }
+        proxies.add("https://vipergirls.to")
+    }
+
+    fun getProxies(): List<String> {
+        return ArrayList(proxies)
+    }
+
+    fun newSettings(settings: Settings) {
+        check(settings)
+        val viperSettings = if (settings.viperSettings.login) {
+            if (this.settings.viperSettings.password != settings.viperSettings.password) {
+                settings.viperSettings.copy(password = DigestUtils.md5Hex(settings.viperSettings.password))
+            } else {
+                settings.viperSettings
+            }
+        } else {
+            settings.viperSettings.copy(username = "", password = "", thanks = false, login = false)
+        }
+        this.settings = settings.copy(viperSettings = viperSettings)
+        save()
+        coroutineScope.launch {
+            eventBus.publishEvent(SettingsUpdateEvent(this@SettingsService.settings))
+        }
+    }
+
+    private fun restore() {
+        try {
+            if (configPath.toFile().exists()) {
+                settings = json.decodeFromString(configPath.readText())
+            }
+        } catch (e: Exception) {
+            log.error("Failed restore user settings", e)
+            settings = Settings()
+        }
+        if (!proxies.contains(settings.viperSettings.host)) {
+            val viperSetting = settings.viperSettings.copy(host = "https://vipergirls.to")
+            settings = settings.copy(viperSettings = viperSetting)
+        }
+        try {
+            check(settings)
+        } catch (e: ValidationException) {
+            log.error("Your settings are invalid, using default settings", e)
+            settings = Settings()
+        }
+        save()
+    }
+
+    private fun save() {
+        try {
+            Files.writeString(
+                configPath,
+                json.encodeToString(settings),
+                StandardOpenOption.CREATE,
+                StandardOpenOption.WRITE,
+                StandardOpenOption.TRUNCATE_EXISTING,
+                StandardOpenOption.SYNC
+            )
+        } catch (e: Exception) {
+            log.error("Failed to store user settings", e)
+        }
+    }
+
+    @Throws(ValidationException::class)
+    fun check(settings: Settings) {
+        val path: Path = try {
+            Paths.get(settings.downloadSettings.downloadPath)
+        } catch (e: InvalidPathException) {
+            throw ValidationException(
+                String.format(
+                    "%s is invalid", settings.downloadSettings.downloadPath
+                )
+            )
+        }
+        if (!Files.exists(path)) {
+            throw ValidationException(
+                String.format(
+                    "%s does not exist", settings.downloadSettings.downloadPath
+                )
+            )
+        } else if (!Files.isDirectory(path)) {
+            throw ValidationException(
+                String.format(
+                    "%s is not a directory", settings.downloadSettings.downloadPath
+                )
+            )
+        }
+
+        if (settings.downloadSettings.autoQueueThreshold < 0) {
+            throw ValidationException("Invalid auto queue settings, value must be a positive integer")
+        }
+
+        if (settings.connectionSettings.maxGlobalConcurrent < 0 || settings.connectionSettings.maxGlobalConcurrent > 24) {
+            throw ValidationException(
+                "Invalid max global concurrent download settings, values must be in [0,24]"
+            )
+        }
+        if (settings.connectionSettings.maxConcurrentPerHost < 1 || settings.connectionSettings.maxConcurrentPerHost > 4) {
+            throw ValidationException("Invalid max concurrent download settings, values must be in [1,4]")
+        }
+        if (settings.connectionSettings.timeout < 1 || settings.connectionSettings.timeout > 300) {
+            throw ValidationException(
+                "Invalid connection timeout settings, values must be in [1,300]"
+            )
+        }
+        if (settings.connectionSettings.maxAttempts < 1 || settings.connectionSettings.maxAttempts > 10) {
+            throw ValidationException("Invalid maximum attempts settings, values must be in [1,10]")
+        }
+        if (settings.systemSettings.maxEventLog < 10 || settings.systemSettings.maxEventLog > 10000) {
+            throw ValidationException(
+                "Invalid maximum event log record settings, values must be in [100,10000]"
+            )
+        }
+        if (settings.systemSettings.clipboardPollingRate < 500) {
+            throw ValidationException(
+                "Invalid clipboard monitoring polling rate settings, values must be >= 500"
+            )
+        }
+    }
+}