import fs from "fs";
import path from "path";
import { fileURLToPath } from "url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

const seccionesDir = path.join(__dirname, "descargas", "secciones");
const videosOfflineDir = path.join(__dirname, "descargas", "videos_offline");
const mapaPath = path.join(__dirname, ".mapa_videos.json");

if (!fs.existsSync(videosOfflineDir)) fs.mkdirSync(videosOfflineDir, { recursive: true });

let mapa = {};
try {
  if (fs.existsSync(mapaPath)) {
    mapa = JSON.parse(fs.readFileSync(mapaPath, "utf-8"));
  }
} catch (e) {}

// Find all MX_video_*.mp4 in secciones
function findVideos(dir) {
  let results = [];
  const list = fs.readdirSync(dir);
  for (const file of list) {
    const filePath = path.join(dir, file);
    const stat = fs.statSync(filePath);
    if (stat && stat.isDirectory()) {
      results = results.concat(findVideos(filePath));
    } else if (file.startsWith("MX_video_") ) {
      results.push(filePath);
    }
  }
  return results;
}

const videos = findVideos(seccionesDir);
for (const vidPath of videos) {
  const filename = path.basename(vidPath);
  // Extact ID: MX_video_1175436659.mp4
  const match = filename.match(/MX_video_(\d+)/);
  if (match) {
    const vimeoID = match[1];
    const newPath = path.join(videosOfflineDir, filename);
    fs.renameSync(vidPath, newPath);
    console.log(`Movido: ${filename} a videos_offline`);
    mapa[vimeoID] = filename;
  }
}

fs.writeFileSync(mapaPath, JSON.stringify(mapa, null, 2));
console.log("Mapa de videos actualizado.");