veilidchat/lib/tick.dart
Christien Rioux e76e3cf0ba 1.0.2
2023-08-08 23:33:31 -07:00

169 lines
5.3 KiB
Dart

// XXX Eliminate this when we have ValueChanged
import 'dart:async';
import 'package:fast_immutable_collections/fast_immutable_collections.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../entities/proto.dart' as proto;
import 'providers/account.dart';
import 'providers/chat.dart';
import 'providers/contact.dart';
import 'providers/contact_invite.dart';
import 'providers/conversation.dart';
const int ticksPerContactInvitationCheck = 5;
const int ticksPerNewMessageCheck = 5;
class BackgroundTicker extends ConsumerStatefulWidget {
const BackgroundTicker({required this.builder, super.key});
final Widget Function(BuildContext) builder;
@override
BackgroundTickerState createState() => BackgroundTickerState();
}
class BackgroundTickerState extends ConsumerState<BackgroundTicker> {
Timer? _tickTimer;
bool _inTick = false;
int _contactInvitationCheckTick = 0;
int _newMessageCheckTick = 0;
@override
void initState() {
super.initState();
_tickTimer = Timer.periodic(const Duration(seconds: 1), (timer) {
if (!_inTick) {
unawaited(_onTick());
}
});
}
@override
void dispose() {
final tickTimer = _tickTimer;
if (tickTimer != null) {
tickTimer.cancel();
}
super.dispose();
}
@override
// ignore: prefer_expression_function_bodies
Widget build(BuildContext context) {
return widget.builder(context);
}
Future<void> _onTick() async {
_inTick = true;
try {
final unord = <Future<void>>[];
// Check extant contact invitations once every N seconds
_contactInvitationCheckTick += 1;
if (_contactInvitationCheckTick >= ticksPerContactInvitationCheck) {
_contactInvitationCheckTick = 0;
unord.add(_doContactInvitationCheck());
}
// Check new messages once every N seconds
_newMessageCheckTick += 1;
if (_newMessageCheckTick >= ticksPerNewMessageCheck) {
_newMessageCheckTick = 0;
unord.add(_doNewMessageCheck());
}
if (unord.isNotEmpty) {
await Future.wait(unord);
}
} finally {
_inTick = false;
}
}
Future<void> _doContactInvitationCheck() async {
final contactInvitationRecords =
await ref.read(fetchContactInvitationRecordsProvider.future);
final activeAccountInfo = await ref.read(fetchActiveAccountProvider.future);
if (contactInvitationRecords == null || activeAccountInfo == null) {
return;
}
final allChecks = <Future<void>>[];
for (final contactInvitationRecord in contactInvitationRecords) {
allChecks.add(() async {
final acceptReject = await checkAcceptRejectContact(
activeAccountInfo: activeAccountInfo,
contactInvitationRecord: contactInvitationRecord);
if (acceptReject != null) {
final acceptedContact = acceptReject.acceptedContact;
if (acceptedContact != null) {
// Accept
await createContact(
activeAccountInfo: activeAccountInfo,
profile: acceptedContact.profile,
remoteIdentity: acceptedContact.remoteIdentity,
remoteConversationRecordKey:
acceptedContact.remoteConversationRecordKey,
localConversationRecordKey:
acceptedContact.localConversationRecordKey,
);
ref
..invalidate(fetchContactInvitationRecordsProvider)
..invalidate(fetchContactListProvider);
} else {
// Reject
ref.invalidate(fetchContactInvitationRecordsProvider);
}
}
}());
}
await Future.wait(allChecks);
}
Future<void> _doNewMessageCheck() async {
final activeChat = activeChatState.currentState;
if (activeChat == null) {
return;
}
final activeAccountInfo = await ref.read(fetchActiveAccountProvider.future);
if (activeAccountInfo == null) {
return;
}
final contactList = ref.read(fetchContactListProvider).asData?.value ??
const IListConst([]);
final activeChatContactIdx = contactList.indexWhere(
(c) =>
proto.TypedKeyProto.fromProto(c.remoteConversationRecordKey) ==
activeChat,
);
if (activeChatContactIdx == -1) {
return;
}
final activeChatContact = contactList[activeChatContactIdx];
final remoteIdentityPublicKey =
proto.TypedKeyProto.fromProto(activeChatContact.identityPublicKey);
final remoteConversationRecordKey = proto.TypedKeyProto.fromProto(
activeChatContact.remoteConversationRecordKey);
final localConversationRecordKey = proto.TypedKeyProto.fromProto(
activeChatContact.localConversationRecordKey);
final newMessages = await getRemoteConversationMessages(
activeAccountInfo: activeAccountInfo,
remoteIdentityPublicKey: remoteIdentityPublicKey,
remoteConversationRecordKey: remoteConversationRecordKey);
if (newMessages != null) {
final changed = await mergeLocalConversationMessages(
activeAccountInfo: activeAccountInfo,
localConversationRecordKey: localConversationRecordKey,
remoteIdentityPublicKey: remoteIdentityPublicKey,
newMessages: newMessages);
if (changed) {
ref.invalidate(activeConversationMessagesProvider);
}
}
}
}