script.js

async function fetchFolderContents(repo, branch, path) {
    const apiUrl = `https://api.github.com/repos/${repo}/contents/${path}?ref=${branch}`;
    const res = await fetch(apiUrl);
    if (!res.ok) throw new Error(`Failed to fetch ${apiUrl}`);
    return res.json();
  }
  
  async function downloadFolder(repo, branch, path) {
    const JSZip = window.JSZip;
    const zip = new JSZip();
  
    async function addFilesToZip(folder, currentPath) {
      for (const file of folder) {
        if (file.type === 'file') {
          const content = await fetch(file.download_url).then(r => r.blob());
          zip.file(currentPath + file.name, content);
        } else if (file.type === 'dir') {
          const subFolder = await fetchFolderContents(repo, branch, file.path);
          await addFilesToZip(subFolder, currentPath + file.name + '/');
        }
      }
    }
  
    const rootFolder = await fetchFolderContents(repo, branch, path);
    await addFilesToZip(rootFolder, '');
  
    const blob = await zip.generateAsync({ type: "blob" });
    const a = document.createElement("a");
    a.href = URL.createObjectURL(blob);
    a.download = path.split('/').pop() + ".zip";
    a.click();
  }
  
  function parseGitHubUrl(url) {
    const match = url.match(/github\.com\/([^\/]+\/[^\/]+)\/tree\/([^\/]+)\/(.+)/);
    if (!match) throw new Error("Invalid GitHub folder URL");
    return {
      repo: match[1],
      branch: match[2],
      path: match[3]
    };
  }
  
  document.getElementById("downloadBtn").addEventListener("click", async () => {
    const url = document.getElementById("folderUrl").value.trim();
    const status = document.getElementById("status");
    status.textContent = "⏳ Downloading...";
  
    try {
      const { repo, branch, path } = parseGitHubUrl(url);
      await downloadFolder(repo, branch, path);
      status.textContent = "✅ Download complete!";
    } catch (e) {
      console.error(e);
      status.textContent = "❌ " + e.message;
    }
  });
  
  // Load JSZip
  const script = document.createElement("script");
  script.src = "https://cdnjs.cloudflare.com/ajax/libs/jszip/3.10.1/jszip.min.js";
  document.head.appendChild(script);