// Startup queue auto-dedup logic. Extracted from renderer/app.js
// _autoDeduplicateFromLog so the decision can be unit-tested without a DOM or
// the renderer's module-level state.
//
// Loaded both as a CommonJS module (Node tests) and as a browser global
// (renderer/app.js via index.html script tag) so a single implementation backs
// runtime and tests — no drift.
//
// Behaviour: on launch the restored queue is compared against the lifetime
// upload log. ONLY genuinely-completed ('done') jobs that also appear in the
// log are dropped — that's pure decluttering of work that already finished.
//
// Pending jobs (preview / queued) and failed ones (error / aborted) are NEVER
// dropped here, even if a same-name+hoster line exists in the log. Those are
// work the user intentionally has queued (often a deliberate re-upload of a
// file that was uploaded before). The old code filtered on log-presence alone,
// regardless of status, so the ENTIRE restored queue vanished on the next
// restart/update whenever the files had been uploaded previously — surfacing as
// an empty "Dateien hierhin ziehen oder klicken" queue. Manual log import
// (importUploadLog) stays separate and explicit for users who do want bulk
// dedup of pending jobs.

(function (root) {
  'use strict';

  function _key(fileName, hoster) {
    return `${String(fileName).toLowerCase()}|${String(hoster).toLowerCase()}`;
  }

  /**
   * Partition restored queue jobs into kept vs removed, given lifetime log
   * entries. Removes only 'done' jobs whose fileName|hoster is in the log.
   * @param {Array<{status:string,fileName:string,hoster:string}>} jobs
   * @param {Array<{fileName:string,hoster:string}>} logEntries
   * @returns {{ kept: Array, removed: Array }}
   */
  function partitionRestoredJobsByLog(jobs, logEntries) {
    const kept = [];
    const removed = [];
    if (!Array.isArray(jobs) || jobs.length === 0) return { kept, removed };

    const logKeys = new Set();
    for (const e of (Array.isArray(logEntries) ? logEntries : [])) {
      if (e && e.fileName && e.hoster) logKeys.add(_key(e.fileName, e.hoster));
    }

    for (const job of jobs) {
      const isDone = job && job.status === 'done' && job.fileName && job.hoster;
      if (isDone && logKeys.has(_key(job.fileName, job.hoster))) {
        removed.push(job);
      } else {
        kept.push(job);
      }
    }
    return { kept, removed };
  }

  const api = { partitionRestoredJobsByLog };

  if (typeof module !== 'undefined' && module.exports) {
    module.exports = api;
  } else if (root) {
    root.QueueDedup = api;
  }
})(typeof window !== 'undefined' ? window : this);