(function () {
  const onboardingBridgeState = {
    chapters: null,
    pending: null,
  };

  function getPuzzleModalManagerClass() {
    if (typeof PuzzleModalManager !== 'undefined') {
      return PuzzleModalManager;
    }
    if (typeof window.PuzzleModalManager !== 'undefined') {
      return window.PuzzleModalManager;
    }
    return null;
  }

  function ensureDependencies() {
    if (!getPuzzleModalManagerClass()) {
      throw new Error('PuzzleModalManager is not loaded');
    }
  }

  async function loadOnboardingChapters() {
    if (Array.isArray(onboardingBridgeState.chapters)) {
      return onboardingBridgeState.chapters;
    }

    if (onboardingBridgeState.pending) {
      return onboardingBridgeState.pending;
    }

    onboardingBridgeState.pending = fetch('/bbs/api/get_onboarding_chapters.php', {
      credentials: 'same-origin',
    })
      .then(async function (response) {
        const payload = await response.json();
        if (!response.ok || !payload || payload.success !== true || !Array.isArray(payload.chapters)) {
          throw new Error(payload?.message || 'failed_to_load_onboarding_chapters');
        }

        onboardingBridgeState.chapters = payload.chapters;
        window.puzzleChapterData = payload.chapters;
        return payload.chapters;
      })
      .finally(function () {
        onboardingBridgeState.pending = null;
      });

    return onboardingBridgeState.pending;
  }

  function cloneChapter(chapter) {
    return JSON.parse(JSON.stringify(chapter || {}));
  }

  function findChapterIndexByContentId(chapters, contentId) {
    const id = String(contentId || '');
    if (id === '') {
      return -1;
    }

    return chapters.findIndex(function (chapter) {
      const lessons = Array.isArray(chapter?.lessons) ? chapter.lessons : [];
      return lessons.some(function (lesson) {
        return String(lesson?.content_id || '') === id;
      });
    });
  }

  function applyBridgeOverrides(chapter, info) {
    const contentId = String(info?.contentId || '');
    if (!contentId || !Array.isArray(chapter?.lessons)) {
      return chapter;
    }

    chapter.lessons = chapter.lessons.map(function (lesson) {
      if (String(lesson?.content_id || '') !== contentId) {
        return lesson;
      }

      return {
        ...lesson,
        watch_tm: Math.max(Number(lesson?.watch_tm || 0), Number(info?.watchTm || 0)),
        content_tm: Math.max(Number(lesson?.content_tm || 0), Number(info?.contentTm || 0)),
        is_bookmarked: info?.bookmark === true ? true : lesson?.is_bookmarked === true,
      };
    });

    return chapter;
  }

  window._onboardingOpenModal = async function (info) {
    ensureDependencies();

    const PuzzleModalManagerClass = getPuzzleModalManagerClass();
    const chapters = await loadOnboardingChapters();
    const chapterIndex = findChapterIndexByContentId(chapters, info?.contentId);

    if (chapterIndex < 0) {
      throw new Error('onboarding chapter not found');
    }

    const chapter = applyBridgeOverrides(cloneChapter(chapters[chapterIndex]), info);
    await PuzzleModalManagerClass.openChapterModal(chapterIndex, chapter);
  };
})();