// Admin data aggregation helpers for dashboards, playlists, slides, templates, and screens.

const { fetchPagedRows } = require('./utils');

async function fetchAdminData(pool) {
  const [playlists] = await pool.query('SELECT id, name, fade_between_slides, skip_unavailable_rtmp, created_at, modified_at, created_by, modified_by FROM c_playlists ORDER BY id DESC');
  const [canvasSizes] = await pool.query('SELECT id, name, width, height, created_at, modified_at, created_by, modified_by FROM c_canvas_sizes ORDER BY width ASC, height ASC, name ASC');
  const [templates] = await pool.query(`
    SELECT st.id, st.name, st.canvas_size_id, st.background_image_path, st.background_color, st.created_at, st.modified_at,
           cs.name AS canvas_size_name, cs.width AS canvas_size_width, cs.height AS canvas_size_height
    FROM c_templates st
    LEFT JOIN c_canvas_sizes cs ON cs.id = st.canvas_size_id
    ORDER BY st.id DESC
  `);
  const [templateRegions] = await pool.query('SELECT id, template_id, region_key, region_type, label, lock_ratio, x, y, width, height, z_index, created_at, modified_at, created_by, modified_by FROM c_template_regions ORDER BY template_id ASC, z_index ASC, id ASC');
  const [slides] = await pool.query(`
    SELECT s.id, s.title, s.template_id, s.content_json, s.thumbnail_path, s.created_at, s.modified_at, s.created_by, s.modified_by, st.name AS template_name, st.canvas_size_id, cs.width AS canvas_width, cs.height AS canvas_height,
           (SELECT COUNT(DISTINCT ps.playlist_id) FROM c_playlist_slides ps WHERE ps.slide_id = s.id) AS playlist_count
    FROM c_slides s
    LEFT JOIN c_templates st ON st.id = s.template_id
    LEFT JOIN c_canvas_sizes cs ON cs.id = st.canvas_size_id
    ORDER BY s.id DESC
  `);
  const [screens] = await pool.query(`
    SELECT s.id, s.name, s.slug, s.playlist_id, s.created_at, s.modified_at, s.created_by, s.modified_by, p.name AS playlist_name, pl.public_base_url
    FROM d_screens s
    LEFT JOIN c_playlists p ON p.id = s.playlist_id
    LEFT JOIN d_players pl ON pl.device_id = s.player_id
    ORDER BY s.id DESC
  `);
  const [playlistSlides] = await pool.query(`
    SELECT ps.id, ps.playlist_id, ps.position, ps.duration_seconds, ps.use_video_duration, ps.disable_audio, sl.id AS slide_id, sl.title, sl.content_json, sl.thumbnail_path, st.canvas_size_id, cs.width AS canvas_width, cs.height AS canvas_height
    FROM c_playlist_slides ps
    JOIN c_slides sl ON sl.id = ps.slide_id
    LEFT JOIN c_templates st ON st.id = sl.template_id
    LEFT JOIN c_canvas_sizes cs ON cs.id = st.canvas_size_id
    ORDER BY ps.playlist_id ASC, ps.position ASC, ps.id ASC
  `);
  const [playlistScheduleRules] = await pool.query(`
    SELECT id, playlist_slide_id, position, start_datetime, end_datetime, start_time, end_time, schedule_days_json, created_at, modified_at, created_by, modified_by
    FROM c_playlist_slide_schedule_rules
    ORDER BY playlist_slide_id ASC, position ASC, id ASC
  `);

  const rulesBySlideId = new Map();
  playlistScheduleRules.forEach(function (rule) {
    const slideId = Number(rule.playlist_slide_id);
    if (!rulesBySlideId.has(slideId)) {
      rulesBySlideId.set(slideId, []);
    }
    rulesBySlideId.get(slideId).push(rule);
  });

  const playlistSlidesWithRules = playlistSlides.map(function (slide) {
    return Object.assign({}, slide, {
      scheduleRules: rulesBySlideId.get(Number(slide.id)) || []
    });
  });

  return { playlists, canvasSizes, templates, templateRegions, slides, screens, playlistSlides: playlistSlidesWithRules };
}

async function fetchPlaylistsPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
  const paged = await fetchPagedRows(pool, {
        selectSql: `SELECT p.id, p.name, p.fade_between_slides, p.skip_unavailable_rtmp, p.created_at, p.modified_at, p.created_by, p.modified_by,
          (SELECT COUNT(*) FROM c_playlist_slides ps WHERE ps.playlist_id = p.id) AS slide_count,
          (SELECT COUNT(*) FROM d_screens s WHERE s.playlist_id = p.id) AS screen_count
         FROM c_playlists p
     ORDER BY p.id DESC`,
    countSql: 'SELECT COUNT(*) AS count FROM c_playlists',
    searchColumns: ['p.name'],
    searchTerm: searchTerm,
    sortColumns: {
      name: 'p.name',
      slides: 'slide_count',
      created: 'p.created_at',
      modified: 'p.modified_at'
    },
    sortKey: sortKey,
    sortDirection: sortDirection,
    page: page,
    pageSize: pageSize
  });

  return Object.assign({ playlists: paged.rows }, paged);
}

async function fetchSlidesPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
  const paged = await fetchPagedRows(pool, {
    selectSql: `SELECT s.id, s.title, s.template_id, s.content_json, s.thumbnail_path, s.created_at, s.modified_at, s.created_by, s.modified_by, st.name AS template_name, cs.width AS canvas_width, cs.height AS canvas_height,
          (SELECT COUNT(DISTINCT ps.playlist_id) FROM c_playlist_slides ps WHERE ps.slide_id = s.id) AS playlist_count
    FROM c_slides s
    LEFT JOIN c_templates st ON st.id = s.template_id
    LEFT JOIN c_canvas_sizes cs ON cs.id = st.canvas_size_id
     ORDER BY s.id DESC`,
    countSql: 'SELECT COUNT(*) AS count FROM c_slides',
    searchColumns: ['s.title', 'st.name'],
    searchTerm: searchTerm,
    sortColumns: {
      title: 's.title',
      template: 'st.name',
      created: 's.created_at',
      modified: 's.modified_at'
    },
    sortKey: sortKey,
    sortDirection: sortDirection,
    page: page,
    pageSize: pageSize
  });

  return Object.assign({ slides: paged.rows }, paged);
}

async function fetchTemplatesPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
  const paged = await fetchPagedRows(pool, {
    selectSql: `SELECT st.id, st.name, st.canvas_size_id, st.background_image_path, st.background_color, st.created_at, st.modified_at,
           cs.name AS canvas_size_name, cs.width AS canvas_size_width, cs.height AS canvas_size_height,
        (SELECT COUNT(*) FROM c_template_regions str WHERE str.template_id = st.id) AS region_count,
           (SELECT COUNT(*) FROM c_slides s WHERE s.template_id = st.id) AS slide_count
    FROM c_templates st
    LEFT JOIN c_canvas_sizes cs ON cs.id = st.canvas_size_id
    ORDER BY st.id DESC`,
    countSql: 'SELECT COUNT(*) AS count FROM c_templates',
    searchColumns: ['st.name', 'st.background_image_path', 'st.background_color', 'cs.name'],
    searchTerm: searchTerm,
    sortColumns: {
      name: 'st.name',
      canvas: ['cs.width', 'cs.height', 'cs.name'],
      regions: 'region_count',
      slides: 'slide_count',
      created: 'st.created_at',
      modified: 'st.modified_at'
    },
    sortKey: sortKey,
    sortDirection: sortDirection,
    page: page,
    pageSize: pageSize
  });

  return Object.assign({ templates: paged.rows }, paged);
}

async function fetchCanvasSizesPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
  const paged = await fetchPagedRows(pool, {
    selectSql: `SELECT id, name, width, height, created_at, modified_at, created_by, modified_by,
                 (SELECT COUNT(*) FROM c_templates st WHERE st.canvas_size_id = c_canvas_sizes.id) AS template_count
               FROM c_canvas_sizes
     ORDER BY width ASC, height ASC, name ASC`,
    countSql: 'SELECT COUNT(*) AS count FROM c_canvas_sizes',
    searchColumns: ['name', 'width', 'height'],
    searchTerm: searchTerm,
    sortColumns: {
      name: 'name',
      dimensions: ['width', 'height', 'name'],
      templates: 'template_count',
      created: 'created_at',
      modified: 'modified_at'
    },
    sortKey: sortKey,
    sortDirection: sortDirection,
    page: page,
    pageSize: pageSize
  });

  return Object.assign({ canvasSizes: paged.rows }, paged);
}

async function fetchScreensPage(pool, page, pageSize, searchTerm, sortKey, sortDirection) {
  const paged = await fetchPagedRows(pool, {
    selectSql: `SELECT s.id, s.name, s.slug, s.playlist_id, s.created_at, s.modified_at, s.created_by, s.modified_by, p.name AS playlist_name
     FROM d_screens s
     LEFT JOIN c_playlists p ON p.id = s.playlist_id
     ORDER BY s.id DESC`,
    countSql: 'SELECT COUNT(*) AS count FROM d_screens',
    searchColumns: ['s.name', 's.slug', 'p.name'],
    searchTerm: searchTerm,
    sortColumns: {
      name: 's.name',
      url: 's.slug',
      playlist: 'p.name',
      created: 's.created_at',
      modified: 's.modified_at'
    },
    sortKey: sortKey,
    sortDirection: sortDirection,
    page: page,
    pageSize: pageSize
  });

  return Object.assign({ screens: paged.rows }, paged);
}

module.exports = {
  fetchAdminData,
  fetchPlaylistsPage,
  fetchSlidesPage,
  fetchTemplatesPage,
  fetchCanvasSizesPage,
  fetchScreensPage
};