// getDownloadsFiles.js
import fs from 'fs/promises';
import path from 'path';
import os from 'os';

const DOWNLOADS = path.join(os.homedir(), 'Downloads');

/**
 * Recursively get all files in Downloads with name, path, and inode.
 * @returns {Promise<Array<{name: string, path: string, inode: number|null}>>}
 */
async function getAllDownloadsFiles() {
  const files = [];

  async function scan(dir) {
    let entries;
    try {
      entries = await fs.readdir(dir, { withFileTypes: true });
    } catch (err) {
      console.warn(`Cannot read directory: ${dir}`, err.message);
      return;
    }

    for (const entry of entries) {
      const fullPath = path.join(dir, entry.name);

      try {
        // Get stats (inode = ino on Unix, null on Windows)
        // const stats = await fs.stat(fullPath);
        // const inode = stats.ino ?? null;

        if (entry.isDirectory()) {
          // Recurse into subdirectories
          await scan(fullPath);
        } else if (entry.isFile()) {
          const parsed = path.parse(entry.name);  // splits name/ext
          const realExtension = path.extname(fullPath); // from full path (more reliable)

          // Use realExtension if available, fallback to parsed.ext
          const extension = realExtension || parsed.ext;

          // Build clean name + extension
          const nameWithExt = parsed.name + extension;

          files.push({
            name: entry.name,                    // original (may hide ext)
            // nameWithExt: nameWithExt,            // ALWAYS has correct ext
            // displayName: nameWithExt,            // use this in UI
            // extension: extension.slice(1).toLowerCase() || null, // "jpg", null if none
            // path: fullPath,
            // inode: stats.ino ?? null,
            // size: stats.size,
            // mtime: stats.mtime.toISOString()
          });
        }
        // Skip symlinks, sockets, etc. (or handle if needed)
      } catch (err) {
        console.warn(`Cannot access: ${fullPath}`, err.message);
      }
    }
  }

  await scan(DOWNLOADS);
  return files;
}

export default getAllDownloadsFiles;