const test = require('node:test');
const assert = require('node:assert/strict');

require('../src/common');

const registerPlaylistRoutes = require('../src/web/routes/admin/playlists');

function createAppAndHandlers() {
  const handlers = {};
  const app = {
    post(path, ...routeHandlers) {
      handlers[path] = routeHandlers;
    },
    get() {}
  };

  return { app, handlers };
}

function createResponse() {
  return {
    redirectedTo: '',
    statusCode: 200,
    redirect(url) {
      this.redirectedTo = url;
    },
    status(code) {
      this.statusCode = code;
      return this;
    },
    send(body) {
      this.body = body;
      return this;
    }
  };
}

test('playlist create and update redirect to the canonical edit path', async () => {
  const calls = [];
  let groupInsertParams = null;
  let slideInsertParams = null;
  const groupRuleInsertParams = [];
  let canvasSizeEnabled = 1;
  const connection = {
    async beginTransaction() {},
    async commit() {},
    async rollback() {},
    release() {},
    async query(sql, params) {
      if (sql.startsWith('INSERT INTO c_playlists')) {
        return [{ insertId: 4 }];
      }
      if (sql.startsWith('UPDATE c_playlists SET')) {
        calls.push('update-playlist');
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('SELECT ps.id, ps.slide_id, ps.group_id')) return [[]];
      if (sql.startsWith('SELECT id, group_key FROM c_playlist_groups')) return [[]];
      if (sql.startsWith('SELECT r.id, r.playlist_slide_id')) return [[]];
      if (sql.startsWith('SELECT sl.id, st.canvas_size_id')) {
        return [[{ id: 11, canvas_size_id: 7 }]];
      }
      if (sql.startsWith('INSERT INTO c_playlist_groups')) {
        groupInsertParams = params;
        calls.push('insert-group');
        return [{ insertId: 71 }];
      }
      if (sql.startsWith('INSERT INTO c_playlist_slides')) {
        slideInsertParams = params;
        calls.push('insert-slide');
        return [{ insertId: 101 }];
      }
      if (sql.startsWith('INSERT INTO c_playlist_schedule_rules')) {
        groupRuleInsertParams.push(params);
        calls.push('insert-group-rule');
        return [{ insertId: 81 }];
      }
      return [[]];
    }
  };

  const { app, handlers } = createAppAndHandlers();
  registerPlaylistRoutes(app, {
    pool: {
      async getConnection() {
        return connection;
      }
    },
    common: {
      async fetchDuplicateName() { return null; },
      async fetchCanvasSizeById() { return { id: 7, enabled: canvasSizeEnabled }; },
      async fetchPlaylistById() { return { id: 4, canvas_id: 7 }; }
    },
    pages: {},
    fetchOrderedPlaylistSlides: async () => [],
    fetchScreensByPlaylistId: async () => [],
    fetchPlaylistCanvasId: async () => null,
    readArrayField(body, keys) {
      for (const key of keys) {
        if (Object.prototype.hasOwnProperty.call(body, key)) {
          return Array.isArray(body[key]) ? body[key] : [body[key]];
        }
      }
      return [];
    },
    getAuditUserId: () => 12,
    redirectAfterSave(req, res, url) {
      calls.push({ kind: 'redirectAfterSave', url, path: req.path });
      res.redirect(url);
    },
    notifyPlayerScreens: async () => {},
    broadcastDashboardState: async () => {},
    getPlaylistDeleteBlockMessage: async () => '',
    requirePermission() {
      return function (_req, _res, next) {
        next();
      };
    }
  });

  const createHandlers = handlers['/playlists'];
  const updateHandlers = handlers['/playlists/:id'];
  assert.equal(Array.isArray(createHandlers), true);
  assert.equal(Array.isArray(updateHandlers), true);

  const createRes = createResponse();
  await createHandlers[1]({
    path: '/playlists',
    body: {
      name: 'Lunch Loop',
      canvas_size_id: '7',
      slide_id: []
    }
  }, createRes, () => {});

  const updateRes = createResponse();
  await updateHandlers[1]({
    path: '/playlists/4',
    params: { id: '4' },
    body: {
      name: 'Lunch Loop',
      slide_id: ['11'],
      row_key: ['row-11'],
      duration_seconds: ['10'],
      use_video_duration: ['0'],
      disable_audio: ['1'],
      group_key: ['news'],
      group_name: ['News'],
      group_pick_count: ['1'],
      group_shuffle: ['1'],
      group_mode: ['repeat'],
      group_repeat_count: ['2'],
      group_schedule_rules_json: [JSON.stringify([
        { start_datetime: '2026-10-01T09:00', days: [1, 2, 3] },
        { end_datetime: '2026-10-31T18:00' }
      ])]
    }
  }, updateRes, error => { throw error; });

  assert.equal(createRes.redirectedTo, '/playlists/4/edit');
  assert.equal(updateRes.redirectedTo, '/playlists/4/edit', updateRes.statusCode + ': ' + String(updateRes.body || ''));
  assert.deepEqual(groupInsertParams, [4, 'news', 'News', 1, 1, 'repeat', 2, 12, 12]);
  assert.equal(slideInsertParams[6], 71);
  assert.deepEqual(groupRuleInsertParams, [
    [71, 0, '2026-10-01T09:00', null, null, null, '[1,2,3]', 12, 12],
    [71, 1, null, '2026-10-31T18:00', null, null, null, 12, 12]
  ]);
  assert.deepEqual(calls, [
    { kind: 'redirectAfterSave', url: '/playlists/4/edit', path: '/playlists' },
    'update-playlist',
    'insert-group',
    'insert-group-rule',
    'insert-group-rule',
    'insert-slide',
    { kind: 'redirectAfterSave', url: '/playlists/4/edit', path: '/playlists/4' }
  ]);

  canvasSizeEnabled = 0;
  const disabledCreateRes = createResponse();
  await createHandlers[1]({
    path: '/playlists',
    body: { name: 'Disabled size playlist', canvas_size_id: '7', slide_id: [] }
  }, disabledCreateRes, (error) => { throw error; });
  assert.equal(disabledCreateRes.statusCode, 400);
  assert.equal(disabledCreateRes.body, 'Canvas size is disabled.');

  const retainDisabledRes = createResponse();
  await updateHandlers[1]({
    path: '/playlists/4',
    params: { id: '4' },
    body: { name: 'Lunch Loop', canvas_size_id: '7', slide_id: [] }
  }, retainDisabledRes, (error) => { throw error; });
  assert.equal(retainDisabledRes.redirectedTo, '/playlists/4/edit');

  for (const pickCount of ['0', '2']) {
    const invalidRes = createResponse();
    await updateHandlers[1]({
      path: '/playlists/4',
      params: { id: '4' },
      body: { name: 'Lunch Loop', slide_id: ['11'], group_key: ['news'], group_name: ['News'], group_pick_count: [pickCount] }
    }, invalidRes, () => {});
    assert.equal(invalidRes.statusCode, 400);
  }
  for (const settings of [{ group_mode: ['unknown'] }, { group_repeat_count: ['0'] }, { group_repeat_count: ['101'] }, { group_repeat_count: ['1.5'] }]) {
    const invalidRes = createResponse();
    await updateHandlers[1]({
      path: '/playlists/4', params: { id: '4' },
      body: Object.assign({ name: 'Lunch Loop', slide_id: ['11'], group_key: ['news'], group_name: ['News'], group_pick_count: ['1'] }, settings)
    }, invalidRes, () => {});
    assert.equal(invalidRes.statusCode, 400);
  }
});

test('playlist save updates retained slide, group, and schedule rows in place', async () => {
  const writes = [];
  let items = [
    { id: 101, slide_id: 11, group_id: 201, duration_seconds: 10, position: 0, use_video_duration: 0, disable_audio: 1 },
    { id: 102, slide_id: 12, group_id: null, duration_seconds: 15, position: 1, use_video_duration: 0, disable_audio: 1 }
  ];
  let groups = [{ id: 201, group_key: 'news' }];
  let rules = [
    { id: 301, playlist_slide_id: null, playlist_group_id: 201, position: 0, start_datetime: null, end_datetime: null, start_time: '08:00:00', end_time: '17:00:00', schedule_days_json: '[1,2]' },
    { id: 302, playlist_slide_id: 101, playlist_group_id: null, position: 0, start_datetime: null, end_datetime: null, start_time: '09:00:00', end_time: '18:00:00', schedule_days_json: null },
    { id: 303, playlist_slide_id: 102, playlist_group_id: null, position: 0, start_datetime: null, end_datetime: null, start_time: '10:00:00', end_time: '19:00:00', schedule_days_json: null }
  ];
  const connection = {
    async beginTransaction() {}, async commit() {}, async rollback() {}, release() {},
    async query(sql, params) {
      if (sql.startsWith('SELECT ps.id, ps.slide_id, ps.group_id FROM c_playlist_slides')) return [structuredClone(items)];
      if (sql.startsWith('SELECT id, group_key FROM c_playlist_groups')) return [structuredClone(groups)];
      if (sql.startsWith('SELECT r.id, r.playlist_slide_id')) return [structuredClone(rules)];
      if (sql.startsWith('SELECT sl.id, st.canvas_size_id')) return [[{ id: 11, canvas_size_id: 7 }, { id: 13, canvas_size_id: 7 }]];
      if (sql.startsWith('UPDATE c_playlists SET')) return [{ affectedRows: 1 }];
      if (sql.startsWith('UPDATE c_playlist_groups SET')) {
        writes.push({ kind: 'update-group', id: params[6], name: params[0] });
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('UPDATE c_playlist_slides SET')) {
        writes.push({ kind: 'update-slide', id: params[7], duration: params[2] });
        items = items.map(item => item.id === params[7] ? Object.assign({}, item, {
          slide_id: params[0], position: params[1], duration_seconds: params[2],
          use_video_duration: params[3], disable_audio: params[4], group_id: params[5]
        }) : item);
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('UPDATE c_playlist_schedule_rules SET')) {
        writes.push({ kind: 'update-rule', id: params[7] });
        rules = rules.map(rule => rule.id === params[7] ? Object.assign({}, rule, {
          position: params[0], start_datetime: params[1], end_datetime: params[2],
          start_time: params[3], end_time: params[4], schedule_days_json: params[5]
        }) : rule);
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('INSERT INTO c_playlist_slides')) {
        writes.push({ kind: 'insert-slide', slideId: params[1] });
        items.push({ id: 103, slide_id: params[1], group_id: params[6], duration_seconds: params[3], position: params[2] });
        return [{ insertId: 103 }];
      }
      if (sql.startsWith('DELETE FROM c_playlist_slides')) {
        writes.push({ kind: 'delete-slide', id: params[0] });
        items = items.filter(item => item.id !== params[0]);
        rules = rules.filter(rule => rule.playlist_slide_id !== params[0]);
      }
      return [[]];
    }
  };
  const { app, handlers } = createAppAndHandlers();
  registerPlaylistRoutes(app, {
    pool: { async getConnection() { return connection; } },
    common: {
      async fetchDuplicateName() { return null; },
      async fetchPlaylistById() { return { id: 4, name: 'Loop', canvas_id: 7 }; }
    },
    readArrayField(body, keys) {
      for (const key of keys) {
        if (Object.hasOwn(body, key)) return Array.isArray(body[key]) ? body[key] : [body[key]];
      }
      return [];
    },
    fetchScreensByPlaylistId: async () => [], getAuditUserId: () => 12,
    redirectAfterSave(_req, res, url) { res.redirect(url); }, notifyPlayerScreens: async () => {}, broadcastDashboardState: async () => {},
    requirePermission: () => () => {}
  });

  const response = createResponse();
  await handlers['/playlists/:id'].at(-1)({
    params: { id: '4' },
    body: {
      name: 'Loop',
      slide_id: ['11', '13'], row_key: ['101', 'new-slide'],
      duration_seconds: ['20', '12'], use_video_duration: ['0', '0'], disable_audio: ['1', '1'],
      group_key: ['news', ''], group_name: ['News updated', ''], group_pick_count: ['1', ''], group_shuffle: ['0', ''],
      group_mode: ['repeat', ''], group_repeat_count: ['3', ''],
      group_schedule_rules_json: [JSON.stringify([{ start_time: '08:30', end_time: '17:30', days: [1, 2] }]), ''],
      schedule_rule_row_key: ['101'], schedule_rule_start_time: ['09:30'],
      schedule_rule_end_time: ['18:30'], schedule_rule_days_csv: ['']
    }
  }, response, error => { throw error; });

  assert.equal(response.redirectedTo, '/playlists/4/edit', response.statusCode + ': ' + String(response.body || ''));
  assert.deepEqual(writes, [
    { kind: 'update-group', id: 201, name: 'News updated' },
    { kind: 'update-rule', id: 301 },
    { kind: 'update-slide', id: 101, duration: 20 },
    { kind: 'update-rule', id: 302 },
    { kind: 'insert-slide', slideId: 13 },
    { kind: 'delete-slide', id: 102 }
  ]);
  assert.deepEqual(items.map(item => item.id), [101, 103]);
  assert.deepEqual(rules.map(rule => rule.id), [301, 302]);
});

test('playlist audit compares persisted items and schedules without recreated row IDs', async () => {
  let items = [{ id: 101, slide_id: 11, group_id: null, duration_seconds: 10, position: 0, use_video_duration: 0, disable_audio: 1 }];
  let rules = [{ id: 301, playlist_slide_id: 101, playlist_group_id: null, position: 0, start_datetime: null, end_datetime: null, start_time: '08:00:00', end_time: '17:00:00', schedule_days_json: '[1,2]' }];
  const events = [];
  const connection = {
    async beginTransaction() {}, async commit() {}, async rollback() {}, release() {},
    async query(sql, params) {
      if (sql.startsWith('SELECT ps.id, ps.slide_id, ps.group_id FROM c_playlist_slides')) return [structuredClone(items)];
      if (sql.includes('FROM c_playlist_slides ps') && sql.includes('WHERE ps.playlist_id')) return [structuredClone(items)];
      if (sql.startsWith('SELECT id, group_key FROM c_playlist_groups')) return [[]];
      if (sql.includes('FROM c_playlist_schedule_rules r')) return [structuredClone(rules)];
      if (sql.startsWith('SELECT sl.id, st.canvas_size_id')) return [[{ id: 11, canvas_size_id: 7 }]];
      if (sql.startsWith('UPDATE c_playlist_slides SET')) {
        items = items.map(item => item.id === params[7] ? Object.assign({}, item, {
          slide_id: params[0], position: params[1], duration_seconds: params[2],
          use_video_duration: params[3], disable_audio: params[4], group_id: params[5]
        }) : item);
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('UPDATE c_playlist_schedule_rules SET')) {
        rules = rules.map(rule => rule.id === params[7] ? Object.assign({}, rule, {
          position: params[0], start_datetime: params[1], end_datetime: params[2],
          start_time: params[3] + ':00', end_time: params[4] + ':00', schedule_days_json: params[5]
        }) : rule);
        return [{ affectedRows: 1 }];
      }
      if (sql.startsWith('DELETE FROM c_playlist_slides')) {
        items = items.filter(item => item.id !== params[0]);
        rules = rules.filter(rule => rule.playlist_slide_id !== params[0]);
      }
      return [[]];
    }
  };
  const { app, handlers } = createAppAndHandlers();
  registerPlaylistRoutes(app, {
    pool: { async getConnection() { return connection; } },
    common: {
      async fetchDuplicateName() { return null; },
      async fetchPlaylistById() { return { id: 4, name: 'Loop', canvas_id: 7, fade_between_slides: 0, skip_unavailable_rtmp: 0 }; }
    },
    readArrayField(body, keys) {
      for (const key of keys) {
        if (Object.hasOwn(body, key)) return Array.isArray(body[key]) ? body[key] : [body[key]];
      }
      return [];
    },
    fetchScreensByPlaylistId: async () => [], getAuditUserId: () => 12,
    recordRequestAuditEvent: async (_pool, _req, event) => { events.push(event); },
    redirectAfterSave() {}, notifyPlayerScreens: async () => {}, broadcastDashboardState: async () => {},
    requirePermission: () => () => {}
  });
  const body = {
    name: 'Loop', slide_id: ['11'], row_key: ['row-11'], duration_seconds: ['10'],
    schedule_rule_row_key: ['row-11'], schedule_rule_start_time: ['08:00'], schedule_rule_end_time: ['17:00'], schedule_rule_days_csv: ['1,2']
  };
  const save = async () => {
    const response = createResponse();
    await handlers['/playlists/:id'].at(-1)({ params: { id: '4' }, body }, response, error => { throw error; });
    assert.equal(response.statusCode, 200);
    return events.at(-1).details.changes;
  };
  assert.deepEqual(await save(), {});
  body.duration_seconds = ['20'];
  assert.deepEqual(await save(), { 'items[0].duration_seconds': { from: 10, to: 20 } });
  body.schedule_rule_start_time = ['09:00'];
  assert.deepEqual(await save(), { 'items[0].scheduleRules[0].start_time': { from: '08:00:00', to: '09:00:00' } });
  body.slide_id = [];
  body.row_key = [];
  body.duration_seconds = [];
  const removed = await save();
  assert.deepEqual(removed['items[0].slide_id'], { from: 11, to: null });
  assert.deepEqual(removed['items[0].scheduleRules[0].start_time'], { from: '09:00:00', to: null });
});