// tools/listFolderIds.js
const fs = require('fs');
const fsp = require('fs/promises');
const path = require('path');
const readline = require('readline');
const { WEB_ROOT, INDEX_PATH } = require('../config');

async function buildIdsListForFolder(userName, cartella) {
  const indexPath = path.resolve(__dirname, '..', '..', WEB_ROOT, INDEX_PATH);
  const idsIndex = [];

  console.log("\n[LIST] buildIdsListForFolder()");
  console.log("[LIST] user    =", userName);
  console.log("[LIST] cartella=", cartella);
  console.log("[LIST] indexPath =", indexPath);

  if (!fs.existsSync(indexPath)) {
    console.log("[LIST] index.json non trovato");
    return idsIndex;
  }

  try {
    const raw = await fsp.readFile(indexPath, 'utf8');
    const index = JSON.parse(raw);

    const userObj = index[userName];
    if (!userObj) {
      console.log(`[LIST] Nessuna entry per user=${userName}`);
      return idsIndex;
    }

    const folder = userObj[cartella];
    if (!folder) {
      console.log(`[LIST] Nessuna cartella "${cartella}" per user=${userName}`);
      return idsIndex;
    }

    const ids = Object.keys(folder).filter(k => k !== "_folderHash");
    idsIndex.push(...ids);

    console.log(`\n[LIST] ID trovati in ${userName}/${cartella}: ${idsIndex.length}`);
    idsIndex.forEach(id => console.log(" -", id));
    console.log("");

    return idsIndex;

  } catch (err) {
    console.log("[LIST] Errore leggendo/parsing index.json:", err.message);
    return idsIndex;
  }
}

async function main() {
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });

  const ask = (q) => new Promise(res => rl.question(q, res));

  try {
    const user = await ask('User: ');
    const cartella = await ask('Cartella: ');

    await buildIdsListForFolder(user.trim(), cartella.trim());
  } finally {
    rl.close();
  }
}

main().catch(err => {
  console.error("Errore:", err);
});