import 'package:flutter_test/flutter_test.dart';
import 'package:matrix/matrix.dart';
import 'package:warp/matrix/sliding_sync.dart';

const me = '@alice:example.org';

Map<String, Object?> member(String userId, String membership, {int ts = 1}) =>
    {
      'type': 'm.room.member',
      'state_key': userId,
      'sender': userId,
      'event_id': '\$m$ts$membership',
      'origin_server_ts': ts,
      'content': {'membership': membership},
    };

Map<String, Object?> message(String body, {int ts = 2}) => {
  'type': 'm.room.message',
  'sender': '@bob:example.org',
  'event_id': '\$msg$ts',
  'origin_server_ts': ts,
  'content': {'msgtype': 'm.text', 'body': body},
};

void main() {
  group('SlidingToken', () {
    test('no token is a new connection', () {
      final t = SlidingToken.parse(null);
      expect(t.pos, isNull);
      expect(t.toDeviceSince, isNull);
    });

    test('a /sync token is a new connection', () {
      expect(SlidingToken.parse('s72594_4483_1934').pos, isNull);
    });

    test('round trip', () {
      final t = SlidingToken.parse(const SlidingToken('42', 'td7').toString());
      expect(t.pos, '42');
      expect(t.toDeviceSince, 'td7');
    });

    test('a token without a to-device position', () {
      final t = SlidingToken.parse(const SlidingToken('3', null).toString());
      expect(t.pos, '3');
      expect(t.toDeviceSince, isNull);
    });
  });

  group('slidingRequest', () {
    test('asks for both lists over the window, with the extensions', () {
      final body = slidingRequest(window: 20, toDeviceSince: 'x', connId: 'c');
      final lists = body['lists'] as Map;
      expect((lists['rooms'] as Map)['ranges'], [
        [0, 19],
      ]);
      expect(((lists['dms'] as Map)['filters'] as Map)['is_dm'], true);
      final ext = body['extensions'] as Map;
      expect((ext['to_device'] as Map)['since'], 'x');
      expect((ext['e2ee'] as Map)['enabled'], true);
    });
  });

  group('slidingToSyncJson', () {
    test('a joined room becomes a join with state, timeline and counts', () {
      final json = slidingToSyncJson(
        {
          'pos': '1',
          'rooms': {
            '!a:x': {
              'required_state': [member(me, 'join')],
              'timeline': [message('hi')],
              'prev_batch': 'p1',
              'limited': true,
              'joined_count': 2,
              'notification_count': 3,
              'highlight_count': 1,
              'heroes': [
                {'user_id': '@bob:example.org', 'displayname': 'Bob'},
              ],
            },
          },
        },
        userId: me,
        nextBatch: 'nb',
      );
      final sync = SyncUpdate.fromJson(json);
      expect(sync.nextBatch, 'nb');
      final room = sync.rooms!.join!['!a:x']!;
      expect(room.state!.single.type, 'm.room.member');
      expect(room.timeline!.events!.single.content['body'], 'hi');
      expect(room.timeline!.limited, true);
      expect(room.timeline!.prevBatch, 'p1');
      expect(room.unreadNotifications!.notificationCount, 3);
      expect(room.unreadNotifications!.highlightCount, 1);
      expect(room.summary!.mJoinedMemberCount, 2);
      expect(room.summary!.mHeroes, ['@bob:example.org']);
    });

    test('invite and knock state', () {
      final json = slidingToSyncJson(
        {
          'rooms': {
            '!i:x': {
              'invite_state': [
                {
                  'type': 'm.room.member',
                  'state_key': me,
                  'sender': '@bob:example.org',
                  'content': {'membership': 'invite'},
                },
              ],
            },
            '!k:x': {'knock_state': <Object?>[]},
          },
        },
        userId: me,
        nextBatch: 'nb',
      );
      final sync = SyncUpdate.fromJson(json);
      expect(sync.rooms!.invite!['!i:x']!.inviteState!.single.stateKey, me);
      expect(sync.rooms!.knock!.containsKey('!k:x'), true);
      expect(sync.rooms!.join, isNull);
    });

    test('a room the user left is a leave', () {
      final json = slidingToSyncJson(
        {
          'rooms': {
            '!l:x': {
              'required_state': [member(me, 'join', ts: 1)],
              'timeline': [member(me, 'leave', ts: 5)],
            },
          },
        },
        userId: me,
        nextBatch: 'nb',
      );
      final sync = SyncUpdate.fromJson(json);
      expect(sync.rooms!.leave!.containsKey('!l:x'), true);
      expect(sync.rooms!.join, isNull);
    });

    test('a rejoin after a leave is a join', () {
      final json = slidingToSyncJson(
        {
          'rooms': {
            '!r:x': {
              'timeline': [
                member(me, 'leave', ts: 1),
                member(me, 'join', ts: 2),
              ],
            },
          },
        },
        userId: me,
        nextBatch: 'nb',
      );
      expect(SyncUpdate.fromJson(json).rooms!.join!.containsKey('!r:x'), true);
    });

    test('extensions: to-device, keys, account data, typing, receipts', () {
      final json = slidingToSyncJson(
        {
          'rooms': {
            '!a:x': {'timeline': [message('hi')]},
          },
          'extensions': {
            'to_device': {
              'next_batch': 't2',
              'events': [
                {
                  'type': 'm.room_key_request',
                  'sender': '@bob:example.org',
                  'content': <String, Object?>{},
                },
              ],
            },
            'e2ee': {
              'device_lists': {
                'changed': ['@bob:example.org'],
                'left': <String>[],
              },
              'device_one_time_keys_count': {'signed_curve25519': 50},
              'device_unused_fallback_key_types': ['signed_curve25519'],
            },
            'account_data': {
              'global': [
                {'type': 'm.direct', 'content': <String, Object?>{}},
              ],
              'rooms': {
                '!a:x': [
                  {'type': 'm.fully_read', 'content': {'event_id': '\$x'}},
                ],
              },
            },
            'typing': {
              'rooms': {
                // A room with no other news still gets its typing list.
                '!quiet:x': {
                  'type': 'm.typing',
                  'content': {
                    'user_ids': ['@bob:example.org'],
                  },
                },
              },
            },
            'receipts': {
              'rooms': {
                '!a:x': {'type': 'm.receipt', 'content': <String, Object?>{}},
              },
            },
          },
        },
        userId: me,
        nextBatch: 'nb',
      );
      final sync = SyncUpdate.fromJson(json);
      expect(sync.toDevice!.single.type, 'm.room_key_request');
      expect(sync.deviceLists!.changed, ['@bob:example.org']);
      expect(sync.deviceOneTimeKeysCount!['signed_curve25519'], 50);
      expect(sync.deviceUnusedFallbackKeyTypes, ['signed_curve25519']);
      expect(sync.accountData!.single.type, 'm.direct');
      final a = sync.rooms!.join!['!a:x']!;
      expect(a.accountData!.single.type, 'm.fully_read');
      expect(a.ephemeral!.single.type, 'm.receipt');
      final quiet = sync.rooms!.join!['!quiet:x']!;
      expect(quiet.ephemeral!.single.type, 'm.typing');
    });

    test('an empty response is just a token', () {
      final json = slidingToSyncJson(
        {'pos': '9', 'rooms': <String, Object?>{}},
        userId: me,
        nextBatch: 'nb',
      );
      expect(json, {'next_batch': 'nb'});
    });
  });
}