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

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

const { registerPlayerRoutes } = require('../src/player/routes');

function createAppAndHandlers() {
  const handlers = {};
  const app = {
    use() {},
    get(path, ...routeHandlers) {
      handlers[path] = function (req, res) {
        return new Promise((resolve, reject) => {
          const runHandler = (index) => {
            const handler = routeHandlers[index];
            if (!handler) {
              resolve();
              return;
            }

            let nextCalled = false;
            const next = function () {
              nextCalled = true;
              return runHandler(index + 1);
            };

            let result;
            try {
              result = handler(req, res, next);
            } catch (error) {
              reject(error);
              return;
            }

            Promise.resolve(result).then(function (value) {
              if (!nextCalled) {
                resolve(value);
              }
            }, reject);
          };

          runHandler(0);
        });
      };
    },
    post() {},
    put() {},
    delete() {}
  };

  return { app, handlers };
}

function createResponse() {
  const headers = {};
  return {
    headers,
    statusCode: 200,
    body: null,
    ended: false,
    set(name, value) {
      headers[name] = value;
      return this;
    },
    status(code) {
      this.statusCode = code;
      return this;
    },
    json(value) {
      this.body = value;
      return this;
    },
    send(value) {
      this.body = value;
      return this;
    },
    end() {
      this.ended = true;
      return this;
    }
  };
}

function createPlayerRouteOptions(overrides) {
  return Object.assign({
    mediaDir: 'e:\\Projects Git\\pulse-signage\\media',
    assetDir: 'e:\\Projects Git\\pulse-signage\\src\\player\\public',
    playerRuntime: { broadcastAnnouncementRefresh() {}, snapshotConnections() { return []; } },
    playerPlaylistService: { async buildScreenPlaylist() { return { screen: { slug: 'test2' } }; } },
    rtmpStreamService: {
      async getSessionStatus() { return { ready: false, live: false, session: {} }; },
      async getManifestFilePath() { return null; },
      async getSegmentFilePath() { return null; }
    },
    playerIdentifier: ''
  }, overrides);
}

test('screen route falls back to offline rendering when playlist build fails', async () => {
  const { app, handlers } = createAppAndHandlers();
  const renderCalls = [];
  const originalConsoleError = console.error;
  console.error = () => {};
  const pool = {
    async query() {
      return [[{ id: 1 }]];
    },
    async getConnection() {
      return {
        async beginTransaction() {},
        async query() {},
        async commit() {},
        async rollback() {},
        release() {}
      };
    }
  };
  const common = {
    renderPlayerPage(slug, data) {
      renderCalls.push({ slug, data });
      return data ? 'online' : 'offline';
    }
  };

  registerPlayerRoutes(app, {
    app,
    pool,
    common,
    ...createPlayerRouteOptions({
      playerPlaylistService: {
        async buildScreenPlaylist() {
          const error = new Error('db unavailable');
          error.code = 'ECONNREFUSED';
          throw error;
        }
      }
    })
  });

  const handler = handlers['/screen/:slug'];
  assert.equal(typeof handler, 'function');

  const res = createResponse();

  try {
    await handler({ params: { slug: 'test2' } }, res);
    await new Promise((resolve) => setImmediate(resolve));

    assert.equal(res.headers['X-Player-Offline'], '1');
    assert.equal(res.body, 'offline');
    assert.deepEqual(renderCalls, [
      { slug: 'test2', data: null }
    ]);
  } finally {
    console.error = originalConsoleError;
  }
});

test('screen route renders the shell when playlist data is missing', async () => {
  const { app, handlers } = createAppAndHandlers();
  const renderCalls = [];
  const pool = {
    async query() {
      return [[{ id: 1 }]];
    },
    async getConnection() {
      return {
        async beginTransaction() {},
        async query() {},
        async commit() {},
        async rollback() {},
        release() {}
      };
    }
  };
  const common = {
    renderPlayerPage(slug, data) {
      renderCalls.push({ slug, data });
      return '<html><body><div id="app"><div class="empty">Loading screen...</div></div></body></html>';
    }
  };

  registerPlayerRoutes(app, {
    app,
    pool,
    common,
    ...createPlayerRouteOptions({
      playerPlaylistService: {
        async buildScreenPlaylist() {
          return {
            screen: { id: 7, slug: 'test2' },
            playlist: null,
            slides: [],
            rssFeeds: [],
            apiSources: [],
            timetableGroups: [],
            revision: 'abc123'
          };
        }
      }
    })
  });

  const handler = handlers['/screen/:slug'];
  const res = createResponse();

  await handler({ params: { slug: 'test2' } }, res);

  assert.equal(res.statusCode, 200);
  assert.match(String(res.body), /Loading screen/);
  assert.deepEqual(renderCalls, [
    {
      slug: 'test2',
      data: {
        screen: { id: 7, slug: 'test2' },
        playlist: null,
        slides: [],
        rssFeeds: [],
        apiSources: [],
        timetableGroups: [],
        revision: 'abc123'
      }
    }
  ]);
});

test('playlist api route returns 404, etag, and 304 responses', async () => {
  const { app, handlers } = createAppAndHandlers();
  const playlistData = {
    screen: { id: 7, slug: 'test2' },
    playlist: { id: 22 },
    slides: [],
    rssFeeds: [],
    apiSources: [],
    timetableGroups: [],
    revision: 'rev-123'
  };

  registerPlayerRoutes(app, {
    app,
    pool: { async query() { return [[{ id: 1 }]]; } },
    common: { renderPlayerPage() { return ''; } },
    ...createPlayerRouteOptions({
      playerPlaylistService: {
        async buildScreenPlaylist(slug) {
          if (slug === 'missing') {
            return { screen: null, playlist: null, slides: [], rssFeeds: [], apiSources: [], timetableGroups: [], revision: 'none' };
          }
          return playlistData;
        }
      }
    })
  });

  const handler = handlers['/api/screens/:slug/playlist'];
  assert.equal(typeof handler, 'function');

  const missingRes = createResponse();
  await handler({ params: { slug: 'missing' }, headers: {} }, missingRes);
  assert.equal(missingRes.statusCode, 404);
  assert.deepEqual(missingRes.body, { error: 'Screen not found' });

  const okRes = createResponse();
  await handler({ params: { slug: 'test2' }, headers: {} }, okRes);
  assert.equal(okRes.statusCode, 200);
  assert.equal(okRes.headers.ETag, '"rev-123"');
  assert.deepEqual(okRes.body, playlistData);

  const notModifiedRes = createResponse();
  await handler({ params: { slug: 'test2' }, headers: { 'if-none-match': '"rev-123"' } }, notModifiedRes);
  assert.equal(notModifiedRes.statusCode, 304);
  assert.equal(notModifiedRes.ended, true);
});

test('announcement route returns 503 for transient failures and 304 on matching etag', async () => {
  const { app, handlers } = createAppAndHandlers();
  const announcement = {
    id: 9,
    modified_at: '2026-08-03T00:00:00.000Z',
    expires_at: '2026-08-04T00:00:00.000Z',
    enabled: true
  };

  registerPlayerRoutes(app, {
    app,
    pool: { async query() { return [[{ id: 1 }]]; } },
    common: {
      async fetchActiveAnnouncement() {
        const error = new Error('db unavailable');
        error.code = 'ECONNREFUSED';
        throw error;
      },
      renderPlayerPage() { return ''; }
    },
    ...createPlayerRouteOptions({
      rtmpStreamService: {
        async getSessionStatus() { return { ready: false, live: false, session: {} }; },
        async getManifestFilePath() { return null; },
        async getSegmentFilePath() { return null; }
      }
    })
  });

  const handler = handlers['/api/screens/:slug/announcement'];
  const unavailableRes = createResponse();
  await handler({ params: { slug: 'test2' }, headers: {} }, unavailableRes);
  assert.equal(unavailableRes.statusCode, 503);
  assert.deepEqual(unavailableRes.body, { error: 'Announcement state unavailable.' });

  registerPlayerRoutes(app, {
    app,
    pool: { async query() { return [[{ id: 1 }]]; } },
    common: {
      async fetchActiveAnnouncement() {
        return announcement;
      },
      renderPlayerPage() { return ''; }
    },
    ...createPlayerRouteOptions({
      rtmpStreamService: {
        async getSessionStatus() { return { ready: false, live: false, session: {} }; },
        async getManifestFilePath() { return null; },
        async getSegmentFilePath() { return null; }
      }
    })
  });

  const okHandler = handlers['/api/screens/:slug/announcement'];
  const okRes = createResponse();
  await okHandler({ params: { slug: 'test2' }, headers: {} }, okRes);
  assert.equal(okRes.statusCode, 200);
  assert.equal(okRes.headers.ETag, '"9:2026-08-03T00:00:00.000Z:2026-08-04T00:00:00.000Z:1"');
  assert.deepEqual(okRes.body, { announcement, revision: '9:2026-08-03T00:00:00.000Z:2026-08-04T00:00:00.000Z:1' });

  const notModifiedRes = createResponse();
  await okHandler({ params: { slug: 'test2' }, headers: { 'if-none-match': '"9:2026-08-03T00:00:00.000Z:2026-08-04T00:00:00.000Z:1"' } }, notModifiedRes);
  assert.equal(notModifiedRes.statusCode, 304);
  assert.equal(notModifiedRes.ended, true);
});

test('rtmp session route returns not-ready and ready payloads', async () => {
  const { app, handlers } = createAppAndHandlers();
  const sessionCalls = [];

  registerPlayerRoutes(app, {
    app,
    pool: { async query() { return [[{ id: 1 }]]; } },
    common: { renderPlayerPage() { return ''; } },
    ...createPlayerRouteOptions({
      rtmpStreamService: {
        async getSessionStatus(source, useMutedOutput) {
          sessionCalls.push({ source, useMutedOutput });
          if (source === 'ready') {
            return {
              ready: true,
              live: true,
              session: { key: 'abc', playlistUrl: 'http://example.com/live.m3u8', disableAudio: useMutedOutput }
            };
          }
          return {
            ready: false,
            live: false,
            timedOut: true,
            stderr: 'starting',
            session: {}
          };
        },
        async getManifestFilePath() { return null; },
        async getSegmentFilePath() { return null; }
      }
    })
  });

  const handler = handlers['/api/rtmp/session'];

  const unavailableRes = createResponse();
  await handler({ headers: {}, query: { source: 'cold', disableAudio: 'true' } }, unavailableRes);
  assert.equal(unavailableRes.statusCode, 503);
  assert.deepEqual(unavailableRes.body, { ready: false, live: false, timedOut: true, stderr: 'starting' });

  const readyRes = createResponse();
  await handler({ headers: {}, query: { source: 'ready', disableAudio: 'yes' } }, readyRes);
  assert.equal(readyRes.statusCode, 200);
  assert.deepEqual(readyRes.body, {
    key: 'abc',
    playlistUrl: 'http://example.com/live.m3u8',
    disableAudio: true,
    ready: true,
    live: true
  });
  assert.deepEqual(sessionCalls, [
    { source: 'cold', useMutedOutput: true },
    { source: 'ready', useMutedOutput: true }
  ]);
});