famedlysdk/lib/src/room.dart

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/*
* Famedly Matrix SDK
* Copyright (C) 2019, 2020 Famedly GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import 'dart:async';
import 'package:famedlysdk/matrix_api.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:famedlysdk/src/client.dart';
import 'package:famedlysdk/src/event.dart';
import 'package:famedlysdk/src/utils/event_update.dart';
import 'package:famedlysdk/src/utils/room_update.dart';
import 'package:famedlysdk/src/utils/matrix_file.dart';
import 'package:image/image.dart';
import 'package:matrix_file_e2ee/matrix_file_e2ee.dart';
import 'package:mime/mime.dart';
import 'package:html_unescape/html_unescape.dart';
import './user.dart';
import 'timeline.dart';
import 'utils/matrix_localizations.dart';
import 'utils/states_map.dart';
import './utils/markdown.dart';
import './database/database.dart' show DbRoom;
enum PushRuleState { notify, mentions_only, dont_notify }
enum JoinRules { public, knock, invite, private }
enum GuestAccess { can_join, forbidden }
enum HistoryVisibility { invited, joined, shared, world_readable }
/// Represents a Matrix room.
class Room {
/// The full qualified Matrix ID for the room in the format '!localid:server.abc'.
final String id;
/// Membership status of the user for this room.
Membership membership;
/// The count of unread notifications.
int notificationCount;
/// The count of highlighted notifications.
int highlightCount;
/// A token that can be supplied to the from parameter of the rooms/{roomId}/messages endpoint.
String prev_batch;
/// The users which can be used to generate a room name if the room does not have one.
/// Required if the room's m.room.name or m.room.canonical_alias state events are unset or empty.
List<String> mHeroes = [];
/// The number of users with membership of join, including the client's own user ID.
int mJoinedMemberCount;
/// The number of users with membership of invite.
int mInvitedMemberCount;
StatesMap states = StatesMap();
/// Key-Value store for ephemerals.
Map<String, BasicRoomEvent> ephemerals = {};
/// Key-Value store for private account data only visible for this user.
Map<String, BasicRoomEvent> roomAccountData = {};
double _newestSortOrder;
double _oldestSortOrder;
double get newSortOrder {
var now = DateTime.now().millisecondsSinceEpoch.toDouble();
if (_newestSortOrder >= now) {
now = _newestSortOrder + 1;
}
_newestSortOrder = now;
return _newestSortOrder;
}
double get oldSortOrder {
_oldestSortOrder--;
return _oldestSortOrder;
}
void resetSortOrder() {
_oldestSortOrder = _newestSortOrder = 0.0;
}
Future<void> updateSortOrder() async {
await client.database?.updateRoomSortOrder(
_oldestSortOrder, _newestSortOrder, client.id, id);
}
/// Returns the [Event] for the given [typeKey] and optional [stateKey].
/// If no [stateKey] is provided, it defaults to an empty string.
Event getState(String typeKey, [String stateKey = '']) =>
states.states[typeKey] != null ? states.states[typeKey][stateKey] : null;
/// Adds the [state] to this room and overwrites a state with the same
/// typeKey/stateKey key pair if there is one.
void setState(Event state) {
// Decrypt if necessary
if (state.type == EventTypes.Encrypted && client.encryptionEnabled) {
try {
state = client.encryption.decryptRoomEventSync(id, state);
} catch (e) {
print('[LibOlm] Could not decrypt room state: ' + e.toString());
}
}
if (!(state.stateKey is String) &&
![EventTypes.Message, EventTypes.Sticker, EventTypes.Encrypted]
.contains(state.type)) {
return;
}
if ((getState(state.type, state.stateKey ?? '')
?.originServerTs
?.millisecondsSinceEpoch ??
0) >
(state.originServerTs?.millisecondsSinceEpoch ?? 1)) {
return;
}
if (!states.states.containsKey(state.type)) {
states.states[state.type] = {};
}
states.states[state.type][state.stateKey ?? ''] = state;
}
/// ID of the fully read marker event.
String get fullyRead => roomAccountData['m.fully_read'] != null
? roomAccountData['m.fully_read'].content['event_id']
: '';
/// If something changes, this callback will be triggered. Will return the
/// room id.
final StreamController<String> onUpdate = StreamController.broadcast();
/// If there is a new session key received, this will be triggered with
/// the session ID.
final StreamController<String> onSessionKeyReceived =
StreamController.broadcast();
/// The name of the room if set by a participant.
String get name => states[EventTypes.RoomName] != null
? states[EventTypes.RoomName].content['name']
: '';
/// The pinned events for this room. If there are no this returns an empty
/// list.
List<String> get pinnedEventIds => states[EventTypes.RoomPinnedEvents] != null
? (states[EventTypes.RoomPinnedEvents].content['pinned'] is List<String>
? states[EventTypes.RoomPinnedEvents].content['pinned']
: <String>[])
: <String>[];
/// Returns a localized displayname for this server. If the room is a groupchat
/// without a name, then it will return the localized version of 'Group with Alice' instead
/// of just 'Alice' to make it different to a direct chat.
/// Empty chats will become the localized version of 'Empty Chat'.
/// This method requires a localization class which implements [MatrixLocalizations]
String getLocalizedDisplayname(MatrixLocalizations i18n) {
if ((name?.isEmpty ?? true) &&
(canonicalAlias?.isEmpty ?? true) &&
!isDirectChat &&
(mHeroes != null && mHeroes.isNotEmpty)) {
return i18n.groupWith(displayname);
}
if (displayname?.isNotEmpty ?? false) {
return displayname;
}
return i18n.emptyChat;
}
/// The topic of the room if set by a participant.
String get topic => states[EventTypes.RoomTopic] != null
? states[EventTypes.RoomTopic].content['topic']
: '';
/// The avatar of the room if set by a participant.
Uri get avatar {
if (states[EventTypes.RoomAvatar] != null &&
states[EventTypes.RoomAvatar].content['url'] != null) {
return Uri.parse(states[EventTypes.RoomAvatar].content['url']);
}
if (mHeroes != null && mHeroes.length == 1 && states[mHeroes[0]] != null) {
return states[mHeroes[0]].asUser.avatarUrl;
}
if (membership == Membership.invite &&
getState(EventTypes.RoomMember, client.userID) != null) {
return getState(EventTypes.RoomMember, client.userID).sender.avatarUrl;
}
return null;
}
/// The address in the format: #roomname:homeserver.org.
String get canonicalAlias => states[EventTypes.RoomCanonicalAlias] != null &&
states[EventTypes.RoomCanonicalAlias].content['alias'] is String
? states[EventTypes.RoomCanonicalAlias].content['alias']
: '';
/// If this room is a direct chat, this is the matrix ID of the user.
/// Returns null otherwise.
String get directChatMatrixID {
String returnUserId;
if (client.directChats is Map<String, dynamic>) {
client.directChats.forEach((String userId, dynamic roomIds) {
if (roomIds is List<dynamic>) {
for (var i = 0; i < roomIds.length; i++) {
if (roomIds[i] == id) {
returnUserId = userId;
break;
}
}
}
});
}
return returnUserId;
}
/// Wheither this is a direct chat or not
bool get isDirectChat => directChatMatrixID != null;
/// Must be one of [all, mention]
String notificationSettings;
Event get lastEvent {
// as lastEvent calculation is based on the state events we unfortunately cannot
// use sortOrder here: With many state events we just know which ones are the
// newest ones, without knowing in which order they actually happened. As such,
// using the origin_server_ts is the best guess for this algorithm. While not
// perfect, it is only used for the room preview in the room list and sorting
// said room list, so it should be good enough.
var lastTime = DateTime.fromMillisecondsSinceEpoch(0);
var lastEvent = getState(EventTypes.Message);
if (lastEvent == null) {
states.forEach((final String key, final entry) {
if (!entry.containsKey('')) return;
final Event state = entry[''];
if (state.originServerTs != null &&
state.originServerTs.millisecondsSinceEpoch >
lastTime.millisecondsSinceEpoch) {
lastTime = state.originServerTs;
lastEvent = state;
}
});
}
return lastEvent;
}
/// Returns a list of all current typing users.
List<User> get typingUsers {
if (!ephemerals.containsKey('m.typing')) return [];
List<dynamic> typingMxid = ephemerals['m.typing'].content['user_ids'];
var typingUsers = <User>[];
for (var i = 0; i < typingMxid.length; i++) {
typingUsers.add(getUserByMXIDSync(typingMxid[i]));
}
return typingUsers;
}
/// Your current client instance.
final Client client;
Room({
this.id,
this.membership = Membership.join,
this.notificationCount = 0,
this.highlightCount = 0,
this.prev_batch = '',
this.client,
this.notificationSettings,
this.mHeroes = const [],
this.mInvitedMemberCount = 0,
this.mJoinedMemberCount = 0,
this.roomAccountData = const {},
double newestSortOrder = 0.0,
double oldestSortOrder = 0.0,
}) : _newestSortOrder = newestSortOrder,
_oldestSortOrder = oldestSortOrder;
/// The default count of how much events should be requested when requesting the
/// history of this room.
static const int DefaultHistoryCount = 100;
/// Calculates the displayname. First checks if there is a name, then checks for a canonical alias and
/// then generates a name from the heroes.
String get displayname {
if (name != null && name.isNotEmpty) return name;
if (canonicalAlias != null &&
canonicalAlias.isNotEmpty &&
canonicalAlias.length > 3) {
return canonicalAlias.localpart;
}
var heroes = <String>[];
if (mHeroes != null &&
mHeroes.isNotEmpty &&
mHeroes.any((h) => h.isNotEmpty)) {
heroes = mHeroes;
} else {
if (states[EventTypes.RoomMember] is Map<String, dynamic>) {
for (var entry in states[EventTypes.RoomMember].entries) {
Event state = entry.value;
if (state.type == EventTypes.RoomMember &&
state.stateKey != client?.userID) heroes.add(state.stateKey);
}
}
}
if (heroes.isNotEmpty) {
var displayname = '';
for (var i = 0; i < heroes.length; i++) {
if (heroes[i].isEmpty) continue;
displayname += getUserByMXIDSync(heroes[i]).calcDisplayname() + ', ';
}
return displayname.substring(0, displayname.length - 2);
}
if (membership == Membership.invite &&
getState(EventTypes.RoomMember, client.userID) != null) {
return getState(EventTypes.RoomMember, client.userID)
.sender
.calcDisplayname();
}
return 'Empty chat';
}
/// The last message sent to this room.
String get lastMessage {
if (lastEvent != null) {
return lastEvent.body;
} else {
return '';
}
}
/// When the last message received.
DateTime get timeCreated {
if (lastEvent != null) {
return lastEvent.originServerTs;
}
return DateTime.now();
}
/// Call the Matrix API to change the name of this room. Returns the event ID of the
/// new m.room.name event.
Future<String> setName(String newName) => client.api.sendState(
id,
EventTypes.RoomName,
{'name': newName},
);
/// Call the Matrix API to change the topic of this room.
Future<String> setDescription(String newName) => client.api.sendState(
id,
EventTypes.RoomTopic,
{'topic': newName},
);
/// Add a tag to the room.
Future<void> addTag(String tag, {double order}) => client.api.addRoomTag(
client.userID,
id,
tag,
order: order,
);
/// Removes a tag from the room.
Future<void> removeTag(String tag) => client.api.removeRoomTag(
client.userID,
id,
tag,
);
/// Returns all tags for this room.
Map<String, Tag> get tags {
if (roomAccountData['m.tag'] == null ||
!(roomAccountData['m.tag'].content['tags'] is Map)) {
return {};
}
final tags = (roomAccountData['m.tag'].content['tags'] as Map)
.map((k, v) => MapEntry<String, Tag>(k, Tag.fromJson(v)));
tags.removeWhere((k, v) => !TagType.isValid(k));
return tags;
}
/// Returns true if this room has a m.favourite tag.
bool get isFavourite => tags[TagType.Favourite] != null;
/// Sets the m.favourite tag for this room.
Future<void> setFavourite(bool favourite) =>
favourite ? addTag(TagType.Favourite) : removeTag(TagType.Favourite);
/// Call the Matrix API to change the pinned events of this room.
Future<String> setPinnedEvents(List<String> pinnedEventIds) =>
client.api.sendState(
id,
EventTypes.RoomPinnedEvents,
{'pinned': pinnedEventIds},
);
/// return all current emote packs for this room
Map<String, Map<String, String>> get emotePacks {
final packs = <String, Map<String, String>>{};
final normalizeEmotePackName = (String name) {
name = name.replaceAll(' ', '-');
name = name.replaceAll(RegExp(r'[^\w-]'), '');
return name.toLowerCase();
};
final addEmotePack = (String packName, Map<String, dynamic> content,
[String packNameOverride]) {
if (!(content['short'] is Map)) {
return;
}
if (content['pack'] is Map && content['pack']['name'] is String) {
packName = content['pack']['name'];
}
if (packNameOverride != null && packNameOverride.isNotEmpty) {
packName = packNameOverride;
}
packName = normalizeEmotePackName(packName);
if (!packs.containsKey(packName)) {
packs[packName] = <String, String>{};
}
content['short'].forEach((key, value) {
if (key is String && value is String && value.startsWith('mxc://')) {
packs[packName][key] = value;
}
});
};
// first add all the room emotes
final allRoomEmotes = states.states['im.ponies.room_emotes'];
if (allRoomEmotes != null) {
for (final entry in allRoomEmotes.entries) {
final stateKey = entry.key;
final event = entry.value;
addEmotePack(stateKey.isEmpty ? 'room' : stateKey, event.content);
}
}
// next add all the user emotes
final userEmotes = client.accountData['im.ponies.user_emotes'];
if (userEmotes != null) {
addEmotePack('user', userEmotes.content);
}
// finally add all the external emote rooms
final emoteRooms = client.accountData['im.ponies.emote_rooms'];
if (emoteRooms != null && emoteRooms.content['rooms'] is Map) {
for (final roomEntry in emoteRooms.content['rooms'].entries) {
final roomId = roomEntry.key;
if (roomId == id) {
continue;
}
final room = client.getRoomById(roomId);
if (room != null && roomEntry.value is Map) {
for (final stateKeyEntry in roomEntry.value.entries) {
final stateKey = stateKeyEntry.key;
final event = room.getState('im.ponies.room_emotes', stateKey);
if (event != null && stateKeyEntry.value is Map) {
addEmotePack(
(room.canonicalAlias?.isEmpty ?? true)
? room.id
: canonicalAlias,
event.content,
stateKeyEntry.value['name']);
}
}
}
}
}
return packs;
}
/// Sends a normal text message to this room. Returns the event ID generated
/// by the server for this message.
Future<String> sendTextEvent(String message,
{String txid,
Event inReplyTo,
bool parseMarkdown = true,
Map<String, Map<String, String>> emotePacks}) {
final event = <String, dynamic>{
'msgtype': 'm.text',
'body': message,
};
if (message.startsWith('/me ')) {
event['msgtype'] = 'm.emote';
event['body'] = message.substring(4);
}
if (parseMarkdown) {
final html = markdown(event['body'], emotePacks ?? this.emotePacks);
// if the decoded html is the same as the body, there is no need in sending a formatted message
if (HtmlUnescape().convert(html) != event['body']) {
event['format'] = 'org.matrix.custom.html';
event['formatted_body'] = html;
}
}
return sendEvent(event, txid: txid, inReplyTo: inReplyTo);
}
/// Sends a [file] to this room after uploading it. The [msgType] is optional
/// and will be detected by the mimetype of the file. Returns the mxc uri of
/// the uploaded file. If [waitUntilSent] is true, the future will wait until
/// the message event has received the server. Otherwise the future will only
/// wait until the file has been uploaded.
Future<String> sendFileEvent(
MatrixFile file, {
String msgType,
String txid,
Event inReplyTo,
Map<String, dynamic> info,
bool waitUntilSent = false,
MatrixFile thumbnail,
}) async {
Image fileImage;
Image thumbnailImage;
EncryptedFile encryptedThumbnail;
String thumbnailUploadResp;
var fileName = file.path.split('/').last;
final mimeType = lookupMimeType(file.path, headerBytes: file.bytes) ?? '';
if (msgType == null) {
final metaType = (mimeType).split('/')[0];
switch (metaType) {
case 'image':
case 'audio':
case 'video':
msgType = 'm.$metaType';
break;
default:
msgType = 'm.file';
break;
}
}
if (msgType == 'm.image') {
fileImage = decodeImage(file.bytes.toList());
if (thumbnail != null) {
thumbnailImage = decodeImage(thumbnail.bytes.toList());
}
}
final sendEncrypted = encrypted && client.fileEncryptionEnabled;
EncryptedFile encryptedFile;
if (sendEncrypted) {
encryptedFile = await file.encrypt();
if (thumbnail != null) {
encryptedThumbnail = await thumbnail.encrypt();
}
}
final uploadResp = await client.api.upload(
file.bytes,
file.path,
contentType: sendEncrypted ? 'application/octet-stream' : null,
);
if (thumbnail != null) {
thumbnailUploadResp = await client.api.upload(
thumbnail.bytes,
thumbnail.path,
contentType: sendEncrypted ? 'application/octet-stream' : null,
);
}
// Send event
var content = <String, dynamic>{
'msgtype': msgType,
'body': fileName,
'filename': fileName,
if (!sendEncrypted) 'url': uploadResp,
if (sendEncrypted)
'file': {
'url': uploadResp,
'mimetype': mimeType,
'v': 'v2',
'key': {
'alg': 'A256CTR',
'ext': true,
'k': encryptedFile.k,
'key_ops': ['encrypt', 'decrypt'],
'kty': 'oct'
},
'iv': encryptedFile.iv,
'hashes': {'sha256': encryptedFile.sha256}
},
'info': info ??
{
'mimetype': mimeType,
'size': file.size,
if (fileImage != null) 'h': fileImage.height,
if (fileImage != null) 'w': fileImage.width,
if (thumbnailUploadResp != null && !sendEncrypted)
'thumbnail_url': thumbnailUploadResp,
if (thumbnailUploadResp != null && sendEncrypted)
'thumbnail_file': {
'url': thumbnailUploadResp,
'mimetype': mimeType,
'v': 'v2',
'key': {
'alg': 'A256CTR',
'ext': true,
'k': encryptedThumbnail.k,
'key_ops': ['encrypt', 'decrypt'],
'kty': 'oct'
},
'iv': encryptedThumbnail.iv,
'hashes': {'sha256': encryptedThumbnail.sha256}
},
if (thumbnailImage != null)
'thumbnail_info': {
'h': thumbnailImage.height,
'mimetype': mimeType,
'size': thumbnail.size,
'w': thumbnailImage.width,
}
}
};
final sendResponse = sendEvent(
content,
txid: txid,
inReplyTo: inReplyTo,
);
if (waitUntilSent) {
await sendResponse;
}
return uploadResp;
}
/// Sends an audio file to this room and returns the mxc uri.
Future<String> sendAudioEvent(MatrixFile file,
{String txid, Event inReplyTo}) async {
return await sendFileEvent(file,
msgType: 'm.audio', txid: txid, inReplyTo: inReplyTo);
}
/// Sends an image to this room and returns the mxc uri.
Future<String> sendImageEvent(MatrixFile file,
{String txid, int width, int height, Event inReplyTo}) async {
return await sendFileEvent(file,
msgType: 'm.image',
txid: txid,
inReplyTo: inReplyTo,
info: {
'size': file.size,
'mimetype': lookupMimeType(file.path, headerBytes: file.bytes),
'w': width,
'h': height,
});
}
/// Sends an video to this room and returns the mxc uri.
Future<String> sendVideoEvent(MatrixFile file,
{String txid,
int videoWidth,
int videoHeight,
int duration,
MatrixFile thumbnail,
int thumbnailWidth,
int thumbnailHeight,
Event inReplyTo}) async {
var info = <String, dynamic>{
'size': file.size,
'mimetype': lookupMimeType(file.path, headerBytes: file.bytes),
};
if (videoWidth != null) {
info['w'] = videoWidth;
}
if (thumbnailHeight != null) {
info['h'] = thumbnailHeight;
}
if (duration != null) {
info['duration'] = duration;
}
if (thumbnail != null && !(encrypted && client.encryptionEnabled)) {
final thumbnailUploadResp = await client.api.upload(
thumbnail.bytes,
thumbnail.path,
);
info['thumbnail_url'] = thumbnailUploadResp;
info['thumbnail_info'] = {
'size': thumbnail.size,
'mimetype':
lookupMimeType(thumbnail.path, headerBytes: thumbnail.bytes),
};
if (thumbnailWidth != null) {
info['thumbnail_info']['w'] = thumbnailWidth;
}
if (thumbnailHeight != null) {
info['thumbnail_info']['h'] = thumbnailHeight;
}
}
return await sendFileEvent(
file,
msgType: 'm.video',
txid: txid,
inReplyTo: inReplyTo,
info: info,
);
}
/// Sends an event to this room with this json as a content. Returns the
/// event ID generated from the server.
Future<String> sendEvent(Map<String, dynamic> content,
{String type, String txid, Event inReplyTo}) async {
type = type ?? EventTypes.Message;
final sendType =
(encrypted && client.encryptionEnabled) ? EventTypes.Encrypted : type;
// Create new transaction id
String messageID;
if (txid == null) {
messageID = client.generateUniqueTransactionId();
} else {
messageID = txid;
}
if (inReplyTo != null) {
var replyText = '<${inReplyTo.senderId}> ' + inReplyTo.body;
var replyTextLines = replyText.split('\n');
for (var i = 0; i < replyTextLines.length; i++) {
replyTextLines[i] = '> ' + replyTextLines[i];
}
replyText = replyTextLines.join('\n');
content['format'] = 'org.matrix.custom.html';
content['formatted_body'] =
'<mx-reply><blockquote><a href="https://matrix.to/#/${inReplyTo.room.id}/${inReplyTo.eventId}">In reply to</a> <a href="https://matrix.to/#/${inReplyTo.senderId}">${inReplyTo.senderId}</a><br>${inReplyTo.body}</blockquote></mx-reply>${content["formatted_body"] ?? content["body"]}';
content['body'] = replyText + "\n\n${content["body"] ?? ""}";
content['m.relates_to'] = {
'm.in_reply_to': {
'event_id': inReplyTo.eventId,
},
};
}
final sortOrder = newSortOrder;
// Display a *sending* event and store it.
var eventUpdate = EventUpdate(
type: 'timeline',
roomID: id,
eventType: type,
sortOrder: sortOrder,
content: {
'type': type,
'event_id': messageID,
'sender': client.userID,
'status': 0,
'origin_server_ts': DateTime.now().millisecondsSinceEpoch,
'content': content
},
);
client.onEvent.add(eventUpdate);
await client.database?.transaction(() async {
await client.database.storeEventUpdate(client.id, eventUpdate);
await updateSortOrder();
});
// Send the text and on success, store and display a *sent* event.
try {
final sendMessageContent = encrypted && client.encryptionEnabled
? await client.encryption
.encryptGroupMessagePayload(id, content, type: type)
: content;
final res = await client.api.sendMessage(
id,
sendType,
messageID,
sendMessageContent,
);
eventUpdate.content['status'] = 1;
eventUpdate.content['unsigned'] = {'transaction_id': messageID};
eventUpdate.content['event_id'] = res;
client.onEvent.add(eventUpdate);
await client.database?.transaction(() async {
await client.database.storeEventUpdate(client.id, eventUpdate);
});
return res;
} catch (exception) {
print('[Client] Error while sending: ' + exception.toString());
// On error, set status to -1
eventUpdate.content['status'] = -1;
eventUpdate.content['unsigned'] = {'transaction_id': messageID};
client.onEvent.add(eventUpdate);
await client.database?.transaction(() async {
await client.database.storeEventUpdate(client.id, eventUpdate);
});
}
return null;
}
/// Call the Matrix API to join this room if the user is not already a member.
/// If this room is intended to be a direct chat, the direct chat flag will
/// automatically be set.
Future<void> join() async {
try {
await client.api.joinRoom(id);
final invitation = getState(EventTypes.RoomMember, client.userID);
if (invitation != null &&
invitation.content['is_direct'] is bool &&
invitation.content['is_direct']) {
await addToDirectChat(invitation.sender.id);
}
} on MatrixException catch (exception) {
if (exception.errorMessage == 'No known servers') {
await client.database?.forgetRoom(client.id, id);
client.onRoomUpdate.add(
RoomUpdate(
id: id,
membership: Membership.leave,
notification_count: 0,
highlight_count: 0),
);
}
rethrow;
}
}
/// Call the Matrix API to leave this room. If this room is set as a direct
/// chat, this will be removed too.
Future<void> leave() async {
if (directChatMatrixID != '') await removeFromDirectChat();
await client.api.leaveRoom(id);
return;
}
/// Call the Matrix API to forget this room if you already left it.
Future<void> forget() async {
await client.database?.forgetRoom(client.id, id);
await client.api.forgetRoom(id);
return;
}
/// Call the Matrix API to kick a user from this room.
Future<void> kick(String userID) => client.api.kickFromRoom(id, userID);
/// Call the Matrix API to ban a user from this room.
Future<void> ban(String userID) => client.api.banFromRoom(id, userID);
/// Call the Matrix API to unban a banned user from this room.
Future<void> unban(String userID) => client.api.unbanInRoom(id, userID);
/// Set the power level of the user with the [userID] to the value [power].
/// Returns the event ID of the new state event. If there is no known
/// power level event, there might something broken and this returns null.
Future<String> setPower(String userID, int power) async {
if (states[EventTypes.RoomPowerLevels] == null) return null;
final powerMap = <String, dynamic>{}
..addAll(states[EventTypes.RoomPowerLevels].content);
if (powerMap['users'] == null) powerMap['users'] = {};
powerMap['users'][userID] = power;
return await client.api.sendState(
id,
EventTypes.RoomPowerLevels,
powerMap,
);
}
/// Call the Matrix API to invite a user to this room.
Future<void> invite(String userID) => client.api.inviteToRoom(id, userID);
/// Request more previous events from the server. [historyCount] defines how much events should
/// be received maximum. When the request is answered, [onHistoryReceived] will be triggered **before**
/// the historical events will be published in the onEvent stream.
Future<void> requestHistory(
{int historyCount = DefaultHistoryCount, onHistoryReceived}) async {
final resp = await client.api.requestMessages(
id,
prev_batch,
Direction.b,
limit: historyCount,
filter: Client.messagesFilters,
);
if (onHistoryReceived != null) onHistoryReceived();
prev_batch = resp.end;
final loadFn = () async {
if (!((resp.chunk?.isNotEmpty ?? false) && resp.end != null)) return;
if (resp.state != null) {
for (final state in resp.state) {
await EventUpdate(
type: 'state',
roomID: id,
eventType: state.type,
content: state.toJson(),
sortOrder: oldSortOrder,
).decrypt(this, store: true);
}
}
for (final hist in resp.chunk) {
final eventUpdate = await EventUpdate(
type: 'history',
roomID: id,
eventType: hist.type,
content: hist.toJson(),
sortOrder: oldSortOrder,
).decrypt(this, store: true);
client.onEvent.add(eventUpdate);
}
};
if (client.database != null) {
await client.database.transaction(() async {
await client.database.setRoomPrevBatch(resp.end, client.id, id);
await loadFn();
await updateSortOrder();
});
} else {
await loadFn();
}
client.onRoomUpdate.add(
RoomUpdate(
id: id,
membership: membership,
prev_batch: resp.end,
notification_count: notificationCount,
highlight_count: highlightCount,
),
);
}
/// Sets this room as a direct chat for this user if not already.
Future<void> addToDirectChat(String userID) async {
var directChats = client.directChats;
if (directChats.containsKey(userID)) {
if (!directChats[userID].contains(id)) {
directChats[userID].add(id);
} else {
return;
} // Is already in direct chats
} else {
directChats[userID] = [id];
}
await client.api.setAccountData(
client.userID,
'm.direct',
directChats,
);
return;
}
/// Removes this room from all direct chat tags.
Future<void> removeFromDirectChat() async {
var directChats = client.directChats;
if (directChats.containsKey(directChatMatrixID) &&
directChats[directChatMatrixID].contains(id)) {
directChats[directChatMatrixID].remove(id);
} else {
return;
} // Nothing to do here
await client.api.setRoomAccountData(
client.userID,
id,
'm.direct',
directChats,
);
return;
}
/// Sends *m.fully_read* and *m.read* for the given event ID.
Future<void> sendReadReceipt(String eventID) async {
notificationCount = 0;
await client.database?.resetNotificationCount(client.id, id);
await client.api.sendReadMarker(
id,
eventID,
readReceiptLocationEventId: eventID,
);
return;
}
/// Returns a Room from a json String which comes normally from the store. If the
/// state are also given, the method will await them.
static Future<Room> getRoomFromTableRow(
DbRoom row, // either Map<String, dynamic> or DbRoom
Client matrix, {
dynamic states, // DbRoomState, as iterator and optionally as future
dynamic
roomAccountData, // DbRoomAccountData, as iterator and optionally as future
}) async {
final newRoom = Room(
id: row.roomId,
membership: Membership.values
.firstWhere((e) => e.toString() == 'Membership.' + row.membership),
notificationCount: row.notificationCount,
highlightCount: row.highlightCount,
notificationSettings: 'mention', // TODO: do proper things
prev_batch: row.prevBatch,
mInvitedMemberCount: row.invitedMemberCount,
mJoinedMemberCount: row.joinedMemberCount,
mHeroes: row.heroes?.split(',') ?? [],
client: matrix,
roomAccountData: {},
newestSortOrder: row.newestSortOrder,
oldestSortOrder: row.oldestSortOrder,
);
if (states != null) {
var rawStates;
if (states is Future) {
rawStates = await states;
} else {
rawStates = states;
}
for (final rawState in rawStates) {
final newState = Event.fromDb(rawState, newRoom);
newRoom.setState(newState);
}
}
var newRoomAccountData = <String, BasicRoomEvent>{};
if (roomAccountData != null) {
var rawRoomAccountData;
if (roomAccountData is Future) {
rawRoomAccountData = await roomAccountData;
} else {
rawRoomAccountData = roomAccountData;
}
for (final singleAccountData in rawRoomAccountData) {
final content = Event.getMapFromPayload(singleAccountData.content);
final newData = BasicRoomEvent(
content: content,
type: singleAccountData.type,
roomId: singleAccountData.roomId,
);
newRoomAccountData[newData.type] = newData;
}
}
newRoom.roomAccountData = newRoomAccountData;
return newRoom;
}
/// Creates a timeline from the store. Returns a [Timeline] object.
Future<Timeline> getTimeline(
{onTimelineUpdateCallback onUpdate,
onTimelineInsertCallback onInsert}) async {
var events;
if (client.database != null) {
events = await client.database.getEventList(client.id, this);
} else {
events = <Event>[];
}
// Try again to decrypt encrypted events and update the database.
if (encrypted && client.database != null && client.encryptionEnabled) {
await client.database.transaction(() async {
for (var i = 0; i < events.length; i++) {
if (events[i].type == EventTypes.Encrypted &&
events[i].content['can_request_session'] == true) {
events[i] = await client.encryption
.decryptRoomEvent(id, events[i], store: true);
}
}
});
}
var timeline = Timeline(
room: this,
events: events,
onUpdate: onUpdate,
onInsert: onInsert,
);
if (client.database == null) {
prev_batch = '';
await requestHistory(historyCount: 10);
}
return timeline;
}
/// Returns all participants for this room. With lazy loading this
/// list may not be complete. User [requestParticipants] in this
/// case.
List<User> getParticipants() {
var userList = <User>[];
if (states[EventTypes.RoomMember] is Map<String, dynamic>) {
for (var entry in states[EventTypes.RoomMember].entries) {
Event state = entry.value;
if (state.type == EventTypes.RoomMember) userList.add(state.asUser);
}
}
return userList;
}
/// Request the full list of participants from the server. The local list
/// from the store is not complete if the client uses lazy loading.
Future<List<User>> requestParticipants() async {
if (participantListComplete) return getParticipants();
final matrixEvents = await client.api.requestMembers(id);
final users =
matrixEvents.map((e) => Event.fromMatrixEvent(e, this).asUser).toList();
users.removeWhere(
(u) => [Membership.leave, Membership.ban].contains(u.membership));
return users;
}
/// Checks if the local participant list of joined and invited users is complete.
bool get participantListComplete {
var knownParticipants = getParticipants();
knownParticipants.removeWhere(
(u) => ![Membership.join, Membership.invite].contains(u.membership));
return knownParticipants.length ==
(mJoinedMemberCount ?? 0) + (mInvitedMemberCount ?? 0);
}
/// Returns the [User] object for the given [mxID] or requests it from
/// the homeserver and waits for a response.
Future<User> getUserByMXID(String mxID) async {
if (states[mxID] != null) return states[mxID].asUser;
return requestUser(mxID);
}
/// Returns the [User] object for the given [mxID] or requests it from
/// the homeserver and returns a default [User] object while waiting.
User getUserByMXIDSync(String mxID) {
if (states[mxID] != null) {
return states[mxID].asUser;
} else {
requestUser(mxID, ignoreErrors: true);
return User(mxID, room: this);
}
}
final Set<String> _requestingMatrixIds = {};
/// Requests a missing [User] for this room. Important for clients using
/// lazy loading. If the user can't be found this method tries to fetch
/// the displayname and avatar from the profile if [requestProfile] is true.
Future<User> requestUser(
String mxID, {
bool ignoreErrors = false,
bool requestProfile = true,
}) async {
if (getState(EventTypes.RoomMember, mxID) != null) {
return getState(EventTypes.RoomMember, mxID).asUser;
}
if (mxID == null || !_requestingMatrixIds.add(mxID)) return null;
Map<String, dynamic> resp;
try {
resp = await client.api.requestStateContent(
id,
EventTypes.RoomMember,
mxID,
);
} catch (exception) {
if (!ignoreErrors) {
_requestingMatrixIds.remove(mxID);
rethrow;
}
}
if (resp == null && requestProfile) {
try {
final profile = await client.api.requestProfile(mxID);
resp = {
'displayname': profile.displayname,
'avatar_url': profile.avatarUrl,
};
} catch (exception) {
_requestingMatrixIds.remove(mxID);
if (!ignoreErrors) rethrow;
}
}
if (resp == null) {
return null;
}
final user = User(mxID,
displayName: resp['displayname'],
avatarUrl: resp['avatar_url'],
room: this);
states[mxID] = user;
await client.database?.transaction(() async {
final content = <String, dynamic>{
'sender': mxID,
'type': EventTypes.RoomMember,
'content': resp,
'state_key': mxID,
};
await client.database.storeEventUpdate(
client.id,
EventUpdate(
content: content,
roomID: id,
type: 'state',
eventType: EventTypes.RoomMember,
sortOrder: 0.0),
);
});
if (onUpdate != null) onUpdate.add(id);
_requestingMatrixIds.remove(mxID);
return user;
}
/// Searches for the event on the server. Returns null if not found.
Future<Event> getEventById(String eventID) async {
final matrixEvent = await client.api.requestEvent(id, eventID);
return Event.fromMatrixEvent(matrixEvent, this);
}
/// Returns the power level of the given user ID.
int getPowerLevelByUserId(String userId) {
var powerLevel = 0;
Event powerLevelState = states[EventTypes.RoomPowerLevels];
if (powerLevelState == null) return powerLevel;
if (powerLevelState.content['users_default'] is int) {
powerLevel = powerLevelState.content['users_default'];
}
if (powerLevelState.content['users'] is Map<String, dynamic> &&
powerLevelState.content['users'][userId] != null) {
powerLevel = powerLevelState.content['users'][userId];
}
return powerLevel;
}
/// Returns the user's own power level.
int get ownPowerLevel => getPowerLevelByUserId(client.userID);
/// Returns the power levels from all users for this room or null if not given.
Map<String, int> get powerLevels {
Event powerLevelState = states[EventTypes.RoomPowerLevels];
if (powerLevelState.content['users'] is Map<String, int>) {
return powerLevelState.content['users'];
}
return null;
}
/// Uploads a new user avatar for this room. Returns the event ID of the new
/// m.room.avatar event.
Future<String> setAvatar(MatrixFile file) async {
final uploadResp = await client.api.upload(file.bytes, file.path);
return await client.api.sendState(
id,
EventTypes.RoomAvatar,
{'url': uploadResp},
);
}
bool _hasPermissionFor(String action) {
if (getState(EventTypes.RoomPowerLevels) == null ||
getState(EventTypes.RoomPowerLevels).content[action] == null) {
return true;
}
return ownPowerLevel >=
getState(EventTypes.RoomPowerLevels).content[action];
}
/// The level required to ban a user.
bool get canBan => _hasPermissionFor('ban');
/// The default level required to send message events. Can be overridden by the events key.
bool get canSendDefaultMessages => _hasPermissionFor('events_default');
/// The level required to invite a user.
bool get canInvite => _hasPermissionFor('invite');
/// The level required to kick a user.
bool get canKick => _hasPermissionFor('kick');
/// The level required to redact an event.
bool get canRedact => _hasPermissionFor('redact');
/// The default level required to send state events. Can be overridden by the events key.
bool get canSendDefaultStates => _hasPermissionFor('state_default');
bool get canChangePowerLevel => canSendEvent(EventTypes.RoomPowerLevels);
bool canSendEvent(String eventType) {
if (getState(EventTypes.RoomPowerLevels) == null) return true;
if (getState(EventTypes.RoomPowerLevels).content['events'] == null ||
getState(EventTypes.RoomPowerLevels).content['events'][eventType] ==
null) {
return eventType == EventTypes.Message
? canSendDefaultMessages
: canSendDefaultStates;
}
return ownPowerLevel >=
getState(EventTypes.RoomPowerLevels).content['events'][eventType];
}
/// Returns the [PushRuleState] for this room, based on the m.push_rules stored in
/// the account_data.
PushRuleState get pushRuleState {
if (!client.accountData.containsKey('m.push_rules') ||
!(client.accountData['m.push_rules'].content['global'] is Map)) {
return PushRuleState.notify;
}
final Map<String, dynamic> globalPushRules =
client.accountData['m.push_rules'].content['global'];
if (globalPushRules == null) return PushRuleState.notify;
if (globalPushRules['override'] is List) {
for (var i = 0; i < globalPushRules['override'].length; i++) {
if (globalPushRules['override'][i]['rule_id'] == id) {
if (globalPushRules['override'][i]['actions']
.indexOf('dont_notify') !=
-1) {
return PushRuleState.dont_notify;
}
break;
}
}
}
if (globalPushRules['room'] is List) {
for (var i = 0; i < globalPushRules['room'].length; i++) {
if (globalPushRules['room'][i]['rule_id'] == id) {
if (globalPushRules['room'][i]['actions'].indexOf('dont_notify') !=
-1) {
return PushRuleState.mentions_only;
}
break;
}
}
}
return PushRuleState.notify;
}
/// Sends a request to the homeserver to set the [PushRuleState] for this room.
/// Returns ErrorResponse if something goes wrong.
Future<void> setPushRuleState(PushRuleState newState) async {
if (newState == pushRuleState) return null;
dynamic resp;
switch (newState) {
// All push notifications should be sent to the user
case PushRuleState.notify:
if (pushRuleState == PushRuleState.dont_notify) {
await client.api.deletePushRule('global', PushRuleKind.override, id);
} else if (pushRuleState == PushRuleState.mentions_only) {
await client.api.deletePushRule('global', PushRuleKind.room, id);
}
break;
// Only when someone mentions the user, a push notification should be sent
case PushRuleState.mentions_only:
if (pushRuleState == PushRuleState.dont_notify) {
await client.api.deletePushRule('global', PushRuleKind.override, id);
await client.api.setPushRule(
'global',
PushRuleKind.room,
id,
[PushRuleAction.dont_notify],
);
} else if (pushRuleState == PushRuleState.notify) {
await client.api.setPushRule(
'global',
PushRuleKind.room,
id,
[PushRuleAction.dont_notify],
);
}
break;
// No push notification should be ever sent for this room.
case PushRuleState.dont_notify:
if (pushRuleState == PushRuleState.mentions_only) {
await client.api.deletePushRule('global', PushRuleKind.room, id);
}
await client.api.setPushRule(
'global',
PushRuleKind.override,
id,
[PushRuleAction.dont_notify],
conditions: [
PushConditions('event_match', key: 'room_id', pattern: id)
],
);
}
return resp;
}
/// Redacts this event. Returns [ErrorResponse] on error.
Future<String> redactEvent(String eventId,
{String reason, String txid}) async {
// Create new transaction id
String messageID;
final now = DateTime.now().millisecondsSinceEpoch;
if (txid == null) {
messageID = 'msg$now';
} else {
messageID = txid;
}
var data = <String, dynamic>{};
if (reason != null) data['reason'] = reason;
return await client.api.redact(
id,
eventId,
messageID,
reason: reason,
);
}
Future<void> sendTypingInfo(bool isTyping, {int timeout}) {
var data = <String, dynamic>{
'typing': isTyping,
};
if (timeout != null) data['timeout'] = timeout;
return client.api.sendTypingNotification(client.userID, id, isTyping);
}
/// This is sent by the caller when they wish to establish a call.
/// [callId] is a unique identifier for the call.
/// [version] is the version of the VoIP specification this message adheres to. This specification is version 0.
/// [lifetime] is the time in milliseconds that the invite is valid for. Once the invite age exceeds this value,
/// clients should discard it. They should also no longer show the call as awaiting an answer in the UI.
/// [type] The type of session description. Must be 'offer'.
/// [sdp] The SDP text of the session description.
Future<String> inviteToCall(String callId, int lifetime, String sdp,
{String type = 'offer', int version = 0, String txid}) async {
txid ??= 'txid${DateTime.now().millisecondsSinceEpoch}';
return await client.api.sendMessage(
id,
EventTypes.CallInvite,
txid,
{
'call_id': callId,
'lifetime': lifetime,
'offer': {'sdp': sdp, 'type': type},
'version': version,
},
);
}
/// This is sent by callers after sending an invite and by the callee after answering.
/// Its purpose is to give the other party additional ICE candidates to try using to communicate.
///
/// [callId] The ID of the call this event relates to.
///
/// [version] The version of the VoIP specification this messages adheres to. This specification is version 0.
///
/// [candidates] Array of objects describing the candidates. Example:
///
/// ```
/// [
/// {
/// "candidate": "candidate:863018703 1 udp 2122260223 10.9.64.156 43670 typ host generation 0",
/// "sdpMLineIndex": 0,
/// "sdpMid": "audio"
/// }
/// ],
/// ```
Future<String> sendCallCandidates(
String callId,
List<Map<String, dynamic>> candidates, {
int version = 0,
String txid,
}) async {
txid ??= 'txid${DateTime.now().millisecondsSinceEpoch}';
return await client.api.sendMessage(
id,
EventTypes.CallCandidates,
txid,
{
'call_id': callId,
'candidates': candidates,
'version': version,
},
);
}
/// This event is sent by the callee when they wish to answer the call.
/// [callId] is a unique identifier for the call.
/// [version] is the version of the VoIP specification this message adheres to. This specification is version 0.
/// [type] The type of session description. Must be 'answer'.
/// [sdp] The SDP text of the session description.
Future<String> answerCall(String callId, String sdp,
{String type = 'answer', int version = 0, String txid}) async {
txid ??= 'txid${DateTime.now().millisecondsSinceEpoch}';
return await client.api.sendMessage(
id,
EventTypes.CallAnswer,
txid,
{
'call_id': callId,
'answer': {'sdp': sdp, 'type': type},
'version': version,
},
);
}
/// This event is sent by the callee when they wish to answer the call.
/// [callId] The ID of the call this event relates to.
/// [version] is the version of the VoIP specification this message adheres to. This specification is version 0.
Future<String> hangupCall(String callId,
{int version = 0, String txid}) async {
txid ??= 'txid${DateTime.now().millisecondsSinceEpoch}';
return await client.api.sendMessage(
id,
EventTypes.CallHangup,
txid,
{
'call_id': callId,
'version': version,
},
);
}
/// Returns all aliases for this room.
List<String> get aliases {
var aliases = <String>[];
for (var aliasEvent in states.states[EventTypes.RoomAliases].values) {
if (aliasEvent.content['aliases'] is List) {
aliases.addAll(aliasEvent.content['aliases']);
}
}
return aliases;
}
/// A room may be public meaning anyone can join the room without any prior action. Alternatively,
/// it can be invite meaning that a user who wishes to join the room must first receive an invite
/// to the room from someone already inside of the room. Currently, knock and private are reserved
/// keywords which are not implemented.
JoinRules get joinRules => getState(EventTypes.RoomJoinRules) != null
? JoinRules.values.firstWhere(
(r) =>
r.toString().replaceAll('JoinRules.', '') ==
getState(EventTypes.RoomJoinRules).content['join_rule'],
orElse: () => null)
: null;
/// Changes the join rules. You should check first if the user is able to change it.
Future<void> setJoinRules(JoinRules joinRules) async {
await client.api.sendState(
id,
EventTypes.RoomJoinRules,
{
'join_rule': joinRules.toString().replaceAll('JoinRules.', ''),
},
);
return;
}
/// Whether the user has the permission to change the join rules.
bool get canChangeJoinRules => canSendEvent(EventTypes.RoomJoinRules);
/// This event controls whether guest users are allowed to join rooms. If this event
/// is absent, servers should act as if it is present and has the guest_access value "forbidden".
GuestAccess get guestAccess => getState(EventTypes.GuestAccess) != null
? GuestAccess.values.firstWhere(
(r) =>
r.toString().replaceAll('GuestAccess.', '') ==
getState(EventTypes.GuestAccess).content['guest_access'],
orElse: () => GuestAccess.forbidden)
: GuestAccess.forbidden;
/// Changes the guest access. You should check first if the user is able to change it.
Future<void> setGuestAccess(GuestAccess guestAccess) async {
await client.api.sendState(
id,
EventTypes.GuestAccess,
{
'guest_access': guestAccess.toString().replaceAll('GuestAccess.', ''),
},
);
return;
}
/// Whether the user has the permission to change the guest access.
bool get canChangeGuestAccess => canSendEvent(EventTypes.GuestAccess);
/// This event controls whether a user can see the events that happened in a room from before they joined.
HistoryVisibility get historyVisibility =>
getState(EventTypes.HistoryVisibility) != null
? HistoryVisibility.values.firstWhere(
(r) =>
r.toString().replaceAll('HistoryVisibility.', '') ==
getState(EventTypes.HistoryVisibility)
.content['history_visibility'],
orElse: () => null)
: null;
/// Changes the history visibility. You should check first if the user is able to change it.
Future<void> setHistoryVisibility(HistoryVisibility historyVisibility) async {
await client.api.sendState(
id,
EventTypes.HistoryVisibility,
{
'history_visibility':
historyVisibility.toString().replaceAll('HistoryVisibility.', ''),
},
);
return;
}
/// Whether the user has the permission to change the history visibility.
bool get canChangeHistoryVisibility =>
canSendEvent(EventTypes.HistoryVisibility);
/// Returns the encryption algorithm. Currently only `m.megolm.v1.aes-sha2` is supported.
/// Returns null if there is no encryption algorithm.
String get encryptionAlgorithm => getState(EventTypes.Encryption) != null
? getState(EventTypes.Encryption).content['algorithm'].toString()
: null;
/// Checks if this room is encrypted.
bool get encrypted => encryptionAlgorithm != null;
Future<void> enableEncryption({int algorithmIndex = 0}) async {
if (encrypted) throw ('Encryption is already enabled!');
final algorithm = Client.supportedGroupEncryptionAlgorithms[algorithmIndex];
await client.api.sendState(
id,
EventTypes.Encryption,
{
'algorithm': algorithm,
},
);
return;
}
/// Returns all known device keys for all participants in this room.
Future<List<DeviceKeys>> getUserDeviceKeys() async {
var deviceKeys = <DeviceKeys>[];
var users = await requestParticipants();
for (final user in users) {
if (client.userDeviceKeys.containsKey(user.id)) {
for (var deviceKeyEntry
in client.userDeviceKeys[user.id].deviceKeys.values) {
deviceKeys.add(deviceKeyEntry);
}
}
}
return deviceKeys;
}
Future<void> requestSessionKey(String sessionId, String senderKey) async {
if (!client.encryptionEnabled) {
return;
}
await client.encryption.keyManager.request(this, sessionId, senderKey);
}
}