import { Notice, TFile, TFolder } from "obsidian";

function getVaultId() {
  return window.__currentVaultId || "";
}

function triggerDownload(endpoint, filePath, downloadName) {
  const vaultId = getVaultId();
  const url =
    `/api/fs/${endpoint}` +
    `?vault=${encodeURIComponent(vaultId)}` +
    `&path=${encodeURIComponent(filePath)}`;

  const a = document.createElement("a");
  a.href = url;
  a.download = downloadName;
  a.click();
}

function showFilePicker(app, targetFolder = null) {
  const input = document.createElement("input");
  input.type = "file";
  input.multiple = true;
  input.style.display = "none";

  input.addEventListener("change", async () => {
    const files = Array.from(input.files || []);
    if (files.length === 0) return;

    const folder = targetFolder || app.vault.getRoot();
    const folderPath = folder.path;

    new Notice(`Uploading ${files.length} file(s)...`);

    let successCount = 0;
    let errorCount = 0;

    for (const file of files) {
      try {
        const arrayBuffer = await file.arrayBuffer();
        const targetPath = folderPath
          ? `${folderPath}/${file.name}`
          : file.name;

        await app.vault.createBinary(targetPath, arrayBuffer);
        successCount++;
      } catch (e) {
        console.error("[ignis-bridge] Upload failed:", file.name, e);
        errorCount++;
      }
    }

    if (successCount > 0) {
      new Notice(`Uploaded ${successCount} file(s) successfully`);
    }

    if (errorCount > 0) {
      new Notice(`Failed to upload ${errorCount} file(s)`, 5000);
    }

    input.remove();
  });

  document.body.appendChild(input);
  input.click();
}

function addFileMenuItems(menu, file) {
  menu.addItem((item) => {
    item
      .setTitle("Download")
      .setIcon("download")
      .onClick(() => triggerDownload("download", file.path, file.name));
  });
}

function addFolderMenuItems(menu, folder, app) {
  menu.addItem((item) => {
    item
      .setTitle("Download as ZIP")
      .setIcon("download")
      .onClick(() =>
        triggerDownload("download-zip", folder.path, `${folder.name}.zip`),
      );
  });

  menu.addItem((item) => {
    item
      .setTitle("Upload file")
      .setIcon("upload")
      .onClick(() => showFilePicker(app, folder));
  });
}

export { showFilePicker, addFileMenuItems, addFolderMenuItems };