51 lines
1.9 KiB
Dart
51 lines
1.9 KiB
Dart
import 'package:moor/moor.dart';
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import 'package:stream_chat/stream_chat.dart';
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import 'package:stream_chat_persistence/src/db/moor_chat_database.dart';
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import 'package:stream_chat_persistence/src/entity/channels.dart';
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import 'package:stream_chat_persistence/src/entity/users.dart';
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import 'package:stream_chat_persistence/src/mapper/mapper.dart';
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part 'channel_dao.g.dart';
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/// The Data Access Object for operations in [Channels] table.
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@UseDao(tables: [Channels, Users])
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class ChannelDao extends DatabaseAccessor<MoorChatDatabase>
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with _$ChannelDaoMixin {
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/// Creates a new channel dao instance
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ChannelDao(MoorChatDatabase db) : super(db);
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/// Get channel by cid
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Future<ChannelModel?> getChannelByCid(String cid) async =>
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(select(channels)..where((c) => c.cid.equals(cid))).join([
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leftOuterJoin(users, channels.createdById.equalsExp(users.id)),
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]).map((rows) {
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final channel = rows.readTable(channels);
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final createdBy = rows.readTableOrNull(users);
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return channel.toChannelModel(createdBy: createdBy?.toUser());
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}).getSingleOrNull();
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/// Delete all channels by matching cid in [cids]
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///
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/// This will automatically delete the following linked records
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/// 1. Channel Reads
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/// 2. Channel Members
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/// 3. Channel Messages -> Messages Reactions
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Future<int> deleteChannelByCids(List<String> cids) async =>
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(delete(channels)..where((tbl) => tbl.cid.isIn(cids))).go();
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/// Get the channel cids saved in the storage
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Future<List<String>> get cids => (select(channels)
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..orderBy([(c) => OrderingTerm.desc(c.lastMessageAt)])
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..limit(250))
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.map((c) => c.cid)
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.get();
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/// Updates all the channels using the new [channelList] data
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Future<void> updateChannels(List<ChannelModel> channelList) => batch(
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(it) => it.insertAllOnConflictUpdate(
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channels,
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channelList.map((c) => c.toEntity()).toList(),
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),
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);
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}
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