mirror of
https://gitlab.com/veilid/veilidchat.git
synced 2024-12-15 11:04:20 -05:00
356 lines
12 KiB
Dart
356 lines
12 KiB
Dart
// A Conversation is a type of Chat that is 1:1 between two Contacts only
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// Each Contact in the ContactList has at most one Conversation between the
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// remote contact and the local account
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import 'dart:convert';
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import 'package:fast_immutable_collections/fast_immutable_collections.dart';
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import 'package:riverpod_annotation/riverpod_annotation.dart';
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import '../../proto/proto.dart' as proto;
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import '../../tools/tools.dart';
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import '../../init.dart';
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import '../../../packages/veilid_support/veilid_support.dart';
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import 'account.dart';
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import 'chat.dart';
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import 'contact.dart';
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part 'conversation.g.dart';
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class Conversation {
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Conversation._(
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{required ActiveAccountInfo activeAccountInfo,
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required TypedKey localConversationRecordKey,
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required TypedKey remoteIdentityPublicKey,
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required TypedKey remoteConversationRecordKey})
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: _activeAccountInfo = activeAccountInfo,
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_localConversationRecordKey = localConversationRecordKey,
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_remoteIdentityPublicKey = remoteIdentityPublicKey,
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_remoteConversationRecordKey = remoteConversationRecordKey;
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Future<Conversation> open() async {}
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Future<void> close() async {
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//
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}
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Future<proto.Conversation?> readRemoteConversation() async {
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final accountRecordKey =
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_activeAccountInfo.userLogin.accountRecordInfo.accountRecord.recordKey;
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final pool = await DHTRecordPool.instance();
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final crypto = await getConversationCrypto();
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return (await pool.openRead(_remoteConversationRecordKey,
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parent: accountRecordKey, crypto: crypto))
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.scope((remoteConversation) async {
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//
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final conversation =
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await remoteConversation.getProtobuf(proto.Conversation.fromBuffer);
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return conversation;
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});
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}
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Future<proto.Conversation?> readLocalConversation() async {
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final accountRecordKey =
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_activeAccountInfo.userLogin.accountRecordInfo.accountRecord.recordKey;
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final pool = await DHTRecordPool.instance();
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final crypto = await getConversationCrypto();
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return (await pool.openRead(_localConversationRecordKey,
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parent: accountRecordKey, crypto: crypto))
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.scope((localConversation) async {
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//
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final update =
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await localConversation.getProtobuf(proto.Conversation.fromBuffer);
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if (update != null) {
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return update;
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}
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return null;
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});
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}
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Future<proto.Conversation?> writeLocalConversation({
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required proto.Conversation conversation,
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}) async {
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final accountRecordKey =
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_activeAccountInfo.userLogin.accountRecordInfo.accountRecord.recordKey;
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final pool = await DHTRecordPool.instance();
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final crypto = await getConversationCrypto();
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final writer = _activeAccountInfo.getConversationWriter();
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return (await pool.openWrite(_localConversationRecordKey, writer,
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parent: accountRecordKey, crypto: crypto))
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.scope((localConversation) async {
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//
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final update = await localConversation.tryWriteProtobuf(
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proto.Conversation.fromBuffer, conversation);
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if (update != null) {
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return update;
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}
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return null;
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});
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}
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Future<void> addLocalConversationMessage(
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{required proto.Message message}) async {
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final conversation = await readLocalConversation();
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if (conversation == null) {
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return;
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}
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final messagesRecordKey =
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proto.TypedKeyProto.fromProto(conversation.messages);
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final crypto = await getConversationCrypto();
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final writer = _activeAccountInfo.getConversationWriter();
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await (await DHTShortArray.openWrite(messagesRecordKey, writer,
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parent: _localConversationRecordKey, crypto: crypto))
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.scope((messages) async {
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await messages.tryAddItem(message.writeToBuffer());
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});
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}
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Future<bool> mergeLocalConversationMessages(
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{required IList<proto.Message> newMessages}) async {
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final conversation = await readLocalConversation();
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if (conversation == null) {
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return false;
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}
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var changed = false;
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final messagesRecordKey =
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proto.TypedKeyProto.fromProto(conversation.messages);
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final crypto = await getConversationCrypto();
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final writer = _activeAccountInfo.getConversationWriter();
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newMessages = newMessages.sort((a, b) => Timestamp.fromInt64(a.timestamp)
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.compareTo(Timestamp.fromInt64(b.timestamp)));
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await (await DHTShortArray.openWrite(messagesRecordKey, writer,
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parent: _localConversationRecordKey, crypto: crypto))
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.scope((messages) async {
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// Ensure newMessages is sorted by timestamp
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newMessages =
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newMessages.sort((a, b) => a.timestamp.compareTo(b.timestamp));
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// Existing messages will always be sorted by timestamp so merging is easy
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var pos = 0;
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outer:
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for (final newMessage in newMessages) {
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var skip = false;
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while (pos < messages.length) {
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final m =
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await messages.getItemProtobuf(proto.Message.fromBuffer, pos);
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if (m == null) {
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log.error('unable to get message #$pos');
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break outer;
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}
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// If timestamp to insert is less than
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// the current position, insert it here
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final newTs = Timestamp.fromInt64(newMessage.timestamp);
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final curTs = Timestamp.fromInt64(m.timestamp);
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final cmp = newTs.compareTo(curTs);
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if (cmp < 0) {
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break;
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} else if (cmp == 0) {
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skip = true;
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break;
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}
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pos++;
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}
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// Insert at this position
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if (!skip) {
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await messages.tryInsertItem(pos, newMessage.writeToBuffer());
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changed = true;
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}
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}
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});
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return changed;
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}
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Future<IList<proto.Message>?> getRemoteConversationMessages() async {
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final conversation = await readRemoteConversation();
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if (conversation == null) {
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return null;
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}
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final messagesRecordKey =
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proto.TypedKeyProto.fromProto(conversation.messages);
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final crypto = await getConversationCrypto();
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return (await DHTShortArray.openRead(messagesRecordKey,
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parent: _remoteConversationRecordKey, crypto: crypto))
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.scope((messages) async {
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var out = IList<proto.Message>();
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for (var i = 0; i < messages.length; i++) {
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final msg = await messages.getItemProtobuf(proto.Message.fromBuffer, i);
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if (msg == null) {
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throw Exception('Failed to get message');
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}
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out = out.add(msg);
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}
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return out;
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});
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}
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//
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Future<DHTRecordCrypto> getConversationCrypto() async {
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var conversationCrypto = _conversationCrypto;
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if (conversationCrypto != null) {
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return conversationCrypto;
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}
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final veilid = await eventualVeilid.future;
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final identitySecret = _activeAccountInfo.userLogin.identitySecret;
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final cs = await veilid.getCryptoSystem(identitySecret.kind);
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final sharedSecret =
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await cs.cachedDH(_remoteIdentityPublicKey.value, identitySecret.value);
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conversationCrypto = await DHTRecordCryptoPrivate.fromSecret(
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identitySecret.kind, sharedSecret);
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_conversationCrypto = conversationCrypto;
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return conversationCrypto;
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}
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Future<IList<proto.Message>?> getLocalConversationMessages() async {
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final conversation = await readLocalConversation();
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if (conversation == null) {
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return null;
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}
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final messagesRecordKey =
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proto.TypedKeyProto.fromProto(conversation.messages);
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final crypto = await getConversationCrypto();
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return (await DHTShortArray.openRead(messagesRecordKey,
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parent: _localConversationRecordKey, crypto: crypto))
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.scope((messages) async {
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var out = IList<proto.Message>();
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for (var i = 0; i < messages.length; i++) {
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final msg = await messages.getItemProtobuf(proto.Message.fromBuffer, i);
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if (msg == null) {
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throw Exception('Failed to get message');
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}
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out = out.add(msg);
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}
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return out;
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});
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}
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final ActiveAccountInfo _activeAccountInfo;
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final TypedKey _localConversationRecordKey;
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final TypedKey _remoteIdentityPublicKey;
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final TypedKey _remoteConversationRecordKey;
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//
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DHTRecordCrypto? _conversationCrypto;
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}
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// Create a conversation
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// If we were the initiator of the conversation there may be an
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// incomplete 'existingConversationRecord' that we need to fill
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// in now that we have the remote identity key
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Future<T> createConversation<T>(
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{required ActiveAccountInfo activeAccountInfo,
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required TypedKey remoteIdentityPublicKey,
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required FutureOr<T> Function(DHTRecord) callback,
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TypedKey? existingConversationRecordKey}) async {
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final pool = await DHTRecordPool.instance();
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final accountRecordKey =
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activeAccountInfo.userLogin.accountRecordInfo.accountRecord.recordKey;
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final crypto = await getConversationCrypto(
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activeAccountInfo: activeAccountInfo,
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remoteIdentityPublicKey: remoteIdentityPublicKey);
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final writer = activeAccountInfo.getConversationWriter();
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// Open with SMPL scheme for identity writer
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late final DHTRecord localConversationRecord;
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if (existingConversationRecordKey != null) {
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localConversationRecord = await pool.openWrite(
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existingConversationRecordKey, writer,
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parent: accountRecordKey, crypto: crypto);
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} else {
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final localConversationRecordCreate = await pool.create(
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parent: accountRecordKey,
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crypto: crypto,
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schema: DHTSchema.smpl(
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oCnt: 0, members: [DHTSchemaMember(mKey: writer.key, mCnt: 1)]));
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await localConversationRecordCreate.close();
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localConversationRecord = await pool.openWrite(
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localConversationRecordCreate.key, writer,
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parent: accountRecordKey, crypto: crypto);
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}
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return localConversationRecord
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// ignore: prefer_expression_function_bodies
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.deleteScope((localConversation) async {
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// Make messages log
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return (await DHTShortArray.create(
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parent: localConversation.key, crypto: crypto, smplWriter: writer))
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.deleteScope((messages) async {
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// Write local conversation key
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final conversation = proto.Conversation()
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..profile = activeAccountInfo.account.profile
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..identityMasterJson =
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jsonEncode(activeAccountInfo.localAccount.identityMaster.toJson())
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..messages = messages.record.key.toProto();
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//
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final update = await localConversation.tryWriteProtobuf(
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proto.Conversation.fromBuffer, conversation);
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if (update != null) {
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throw Exception('Failed to write local conversation');
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}
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return await callback(localConversation);
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});
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});
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}
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//
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//
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//
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//
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@riverpod
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class ActiveConversationMessages extends _$ActiveConversationMessages {
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/// Get message for active conversation
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@override
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FutureOr<IList<proto.Message>?> build() async {
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await eventualVeilid.future;
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final activeChat = ref.watch(activeChatStateProvider);
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if (activeChat == null) {
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return null;
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}
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final activeAccountInfo =
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await ref.watch(fetchActiveAccountProvider.future);
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if (activeAccountInfo == null) {
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return null;
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}
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final contactList = ref.watch(fetchContactListProvider).asData?.value ??
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const IListConst([]);
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final activeChatContactIdx = contactList.indexWhere(
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(c) =>
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proto.TypedKeyProto.fromProto(c.remoteConversationRecordKey) ==
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activeChat,
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);
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if (activeChatContactIdx == -1) {
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return null;
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}
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final activeChatContact = contactList[activeChatContactIdx];
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final remoteIdentityPublicKey =
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proto.TypedKeyProto.fromProto(activeChatContact.identityPublicKey);
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// final remoteConversationRecordKey = proto.TypedKeyProto.fromProto(
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// activeChatContact.remoteConversationRecordKey);
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final localConversationRecordKey = proto.TypedKeyProto.fromProto(
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activeChatContact.localConversationRecordKey);
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return await getLocalConversationMessages(
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activeAccountInfo: activeAccountInfo,
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localConversationRecordKey: localConversationRecordKey,
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remoteIdentityPublicKey: remoteIdentityPublicKey,
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);
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}
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}
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