FurryChat/lib/utils/famedlysdk_store.dart

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import 'dart:convert';
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import 'dart:typed_data';
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import 'package:famedlysdk/famedlysdk.dart';
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import 'package:flutter/foundation.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:localstorage/localstorage.dart';
import 'dart:async';
import 'dart:core';
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import 'package:path/path.dart' as p;
import 'package:sqflite/sqflite.dart';
class Store extends StoreAPI {
final Client client;
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final LocalStorage storage;
final FlutterSecureStorage secureStorage;
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Store(this.client)
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: storage = LocalStorage('LocalStorage'),
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secureStorage = kIsWeb ? null : FlutterSecureStorage() {
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_init();
}
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Future<dynamic> getItem(String key) async {
if (kIsWeb) {
await storage.ready;
try {
return await storage.getItem(key);
} catch (_) {
return null;
}
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}
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try {
return await secureStorage.read(key: key);
} catch (_) {
return null;
}
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}
Future<void> setItem(String key, String value) async {
if (kIsWeb) {
await storage.ready;
return await storage.setItem(key, value);
}
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if (value == null) {
return await secureStorage.delete(key: key);
} else {
return await secureStorage.write(key: key, value: value);
}
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}
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Future<Map<String, DeviceKeysList>> getUserDeviceKeys() async {
final deviceKeysListString = await getItem(_UserDeviceKeysKey);
if (deviceKeysListString == null) return {};
Map<String, dynamic> rawUserDeviceKeys = json.decode(deviceKeysListString);
Map<String, DeviceKeysList> userDeviceKeys = {};
for (final entry in rawUserDeviceKeys.entries) {
userDeviceKeys[entry.key] = DeviceKeysList.fromJson(entry.value);
}
return userDeviceKeys;
}
Future<void> storeUserDeviceKeys(
Map<String, DeviceKeysList> userDeviceKeys) async {
await setItem(_UserDeviceKeysKey, json.encode(userDeviceKeys));
}
String get _UserDeviceKeysKey => "${client.clientName}.user_device_keys";
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_init() async {
final credentialsStr = await getItem(client.clientName);
if (credentialsStr == null || credentialsStr.isEmpty) {
client.onLoginStateChanged.add(LoginState.loggedOut);
return;
}
debugPrint("[Matrix] Restoring account credentials");
final Map<String, dynamic> credentials = json.decode(credentialsStr);
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if (credentials["homeserver"] == null ||
credentials["token"] == null ||
credentials["userID"] == null) {
client.onLoginStateChanged.add(LoginState.loggedOut);
return;
}
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client.connect(
newDeviceID: credentials["deviceID"],
newDeviceName: credentials["deviceName"],
newHomeserver: credentials["homeserver"],
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newMatrixVersions: List<String>.from(credentials["matrixVersions"] ?? []),
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newToken: credentials["token"],
newUserID: credentials["userID"],
newPrevBatch: kIsWeb
? null
: (credentials["prev_batch"]?.isEmpty ?? true)
? null
: credentials["prev_batch"],
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newOlmAccount: credentials["olmAccount"],
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);
}
Future<void> storeClient() async {
final Map<String, dynamic> credentials = {
"deviceID": client.deviceID,
"deviceName": client.deviceName,
"homeserver": client.homeserver,
"matrixVersions": client.matrixVersions,
"token": client.accessToken,
"userID": client.userID,
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"olmAccount": client.pickledOlmAccount,
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};
await setItem(client.clientName, json.encode(credentials));
return;
}
Future<void> clear() => kIsWeb ? storage.clear() : secureStorage.deleteAll();
}
/// Responsible to store all data persistent and to query objects from the
/// database.
class ExtendedStore extends Store implements ExtendedStoreAPI {
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/// The maximum time that files are allowed to stay in the
/// store. By default this is are 30 days.
static const int MAX_FILE_STORING_TIME = 1 * 30 * 24 * 60 * 60 * 1000;
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@override
final bool extended = true;
ExtendedStore(Client client) : super(client);
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Database _db;
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var txn;
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/// SQLite database for all persistent data. It is recommended to extend this
/// SDK instead of writing direct queries to the database.
//Database get db => _db;
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@override
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_init() async {
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// Open the database and migrate if necessary.
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var databasePath = await getDatabasesPath();
String path = p.join(databasePath, "FluffyMatrix.db");
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_db = await openDatabase(path, version: 20,
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onCreate: (Database db, int version) async {
await createTables(db);
}, onUpgrade: (Database db, int oldVersion, int newVersion) async {
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debugPrint(
"[Store] Migrate database from version $oldVersion to $newVersion");
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if (oldVersion >= 18 && newVersion <= 20) {
await createTables(db);
} else if (oldVersion != newVersion) {
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// Look for an old entry in an old clients library
List<Map> list = [];
try {
list = await db.rawQuery(
"SELECT * FROM Clients WHERE client=?", [client.clientName]);
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} catch (_) {
list = [];
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}
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client.prevBatch = null;
await this.storePrevBatch(null);
schemes.forEach((String name, String scheme) async {
await db.execute("DROP TABLE IF EXISTS $name");
});
await createTables(db);
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if (list.length == 1) {
debugPrint("[Store] Found old client from deprecated store");
var clientList = list[0];
_db = db;
client.connect(
newToken: clientList["token"],
newHomeserver: clientList["homeserver"],
newUserID: clientList["matrix_id"],
newDeviceID: clientList["device_id"],
newDeviceName: clientList["device_name"],
newMatrixVersions:
clientList["matrix_versions"].toString().split(","),
newPrevBatch: null,
);
await db.execute("DROP TABLE IF EXISTS Clients");
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debugPrint(
"[Store] Restore client credentials from deprecated database of ${client.userID}");
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}
} else {
client.onLoginStateChanged.add(LoginState.loggedOut);
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}
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return;
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});
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// Mark all pending events as failed.
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await _db.rawUpdate("UPDATE Events SET status=-1 WHERE status=0");
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// Delete all stored files which are older than [MAX_FILE_STORING_TIME]
final int currentDeadline = DateTime.now().millisecondsSinceEpoch -
ExtendedStore.MAX_FILE_STORING_TIME;
await _db.rawDelete(
"DELETE From Files WHERE saved_at<?",
[currentDeadline],
);
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super._init();
}
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Future<void> setRoomPrevBatch(String roomId, String prevBatch) async {
await txn.rawUpdate(
"UPDATE Rooms SET prev_batch=? WHERE room_id=?", [roomId, prevBatch]);
return;
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}
Future<void> createTables(Database db) async {
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schemes.forEach((String name, String scheme) async {
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await db.execute(scheme);
});
}
/// Clears all tables from the database.
Future<void> clear() async {
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schemes.forEach((String name, String scheme) async {
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await _db.rawDelete("DELETE FROM $name");
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});
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await super.clear();
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return;
}
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Future<void> transaction(Function queries) async {
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return _db.transaction((txnObj) async {
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txn = txnObj.batch();
queries();
await txn.commit(noResult: true);
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});
}
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/// Will be automatically called on every synchronisation.
Future<void> storePrevBatch(String prevBatch) async {
final credentialsStr = await getItem(client.clientName);
if (credentialsStr == null) return;
final Map<String, dynamic> credentials = json.decode(credentialsStr);
credentials["prev_batch"] = prevBatch;
await setItem(client.clientName, json.encode(credentials));
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}
Future<void> storeRoomPrevBatch(Room room) async {
await _db.rawUpdate("UPDATE Rooms SET prev_batch=? WHERE room_id=?",
[room.prev_batch, room.id]);
return null;
}
/// Stores a RoomUpdate object in the database. Must be called inside of
/// [transaction].
Future<void> storeRoomUpdate(RoomUpdate roomUpdate) {
if (txn == null) return null;
// Insert the chat into the database if not exists
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if (roomUpdate.membership != Membership.leave) {
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txn.rawInsert(
"INSERT OR IGNORE INTO Rooms " + "VALUES(?, ?, 0, 0, '', 0, 0, '') ",
[roomUpdate.id, roomUpdate.membership.toString().split('.').last]);
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} else {
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txn.rawDelete("DELETE FROM Rooms WHERE room_id=? ", [roomUpdate.id]);
return null;
}
// Update the notification counts and the limited timeline boolean and the summary
String updateQuery =
"UPDATE Rooms SET highlight_count=?, notification_count=?, membership=?";
List<dynamic> updateArgs = [
roomUpdate.highlight_count,
roomUpdate.notification_count,
roomUpdate.membership.toString().split('.').last
];
if (roomUpdate.summary?.mJoinedMemberCount != null) {
updateQuery += ", joined_member_count=?";
updateArgs.add(roomUpdate.summary.mJoinedMemberCount);
}
if (roomUpdate.summary?.mInvitedMemberCount != null) {
updateQuery += ", invited_member_count=?";
updateArgs.add(roomUpdate.summary.mInvitedMemberCount);
}
if (roomUpdate.summary?.mHeroes != null) {
updateQuery += ", heroes=?";
updateArgs.add(roomUpdate.summary.mHeroes.join(","));
}
updateQuery += " WHERE room_id=?";
updateArgs.add(roomUpdate.id);
txn.rawUpdate(updateQuery, updateArgs);
// Is the timeline limited? Then all previous messages should be
// removed from the database!
if (roomUpdate.limitedTimeline) {
txn.rawDelete("DELETE FROM Events WHERE room_id=?", [roomUpdate.id]);
txn.rawUpdate("UPDATE Rooms SET prev_batch=? WHERE room_id=?",
[roomUpdate.prev_batch, roomUpdate.id]);
}
return null;
}
/// Stores an UserUpdate object in the database. Must be called inside of
/// [transaction].
Future<void> storeUserEventUpdate(UserUpdate userUpdate) {
if (txn == null) return null;
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if (userUpdate.type == "account_data") {
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txn.rawInsert("INSERT OR REPLACE INTO AccountData VALUES(?, ?)", [
userUpdate.eventType,
json.encode(userUpdate.content["content"]),
]);
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} else if (userUpdate.type == "presence") {
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txn.rawInsert("INSERT OR REPLACE INTO Presences VALUES(?, ?, ?)", [
userUpdate.eventType,
userUpdate.content["sender"],
json.encode(userUpdate.content["content"]),
]);
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}
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return null;
}
Future<dynamic> redactMessage(EventUpdate eventUpdate) async {
List<Map<String, dynamic>> res = await _db.rawQuery(
"SELECT * FROM Events WHERE event_id=?",
[eventUpdate.content["redacts"]]);
if (res.length == 1) {
Event event = Event.fromJson(res[0], null);
event.setRedactionEvent(Event.fromJson(eventUpdate.content, null));
final int changes1 = await _db.rawUpdate(
"UPDATE Events SET unsigned=?, content=?, prev_content=? WHERE event_id=?",
[
json.encode(event.unsigned ?? ""),
json.encode(event.content ?? ""),
json.encode(event.prevContent ?? ""),
event.eventId,
],
);
final int changes2 = await _db.rawUpdate(
"UPDATE RoomStates SET unsigned=?, content=?, prev_content=? WHERE event_id=?",
[
json.encode(event.unsigned ?? ""),
json.encode(event.content ?? ""),
json.encode(event.prevContent ?? ""),
event.eventId,
],
);
if (changes1 == 1 && changes2 == 1) return true;
}
return false;
}
/// Stores an EventUpdate object in the database. Must be called inside of
/// [transaction].
Future<void> storeEventUpdate(EventUpdate eventUpdate) {
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if (txn == null || eventUpdate.type == "ephemeral") return null;
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Map<String, dynamic> eventContent = eventUpdate.content;
String type = eventUpdate.type;
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String chatId = eventUpdate.roomID;
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// Get the state_key for m.room.member events
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String stateKey = "";
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if (eventContent["state_key"] is String) {
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stateKey = eventContent["state_key"];
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}
if (eventUpdate.eventType == "m.room.redaction") {
redactMessage(eventUpdate);
}
if (type == "timeline" || type == "history") {
// calculate the status
num status = 2;
if (eventContent["status"] is num) status = eventContent["status"];
// Save the event in the database
if ((status == 1 || status == -1) &&
eventContent["unsigned"] is Map<String, dynamic> &&
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eventContent["unsigned"]["transaction_id"] is String) {
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txn.rawUpdate(
"UPDATE Events SET status=?, event_id=? WHERE event_id=?", [
status,
eventContent["event_id"],
eventContent["unsigned"]["transaction_id"]
]);
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} else {
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txn.rawInsert(
"INSERT OR REPLACE INTO Events VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
[
eventContent["event_id"],
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chatId,
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eventContent["origin_server_ts"],
eventContent["sender"],
eventContent["type"],
json.encode(eventContent["unsigned"] ?? ""),
json.encode(eventContent["content"]),
json.encode(eventContent["prevContent"]),
eventContent["state_key"],
status
]);
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}
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// Is there a transaction id? Then delete the event with this id.
if (status != -1 &&
eventUpdate.content.containsKey("unsigned") &&
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eventUpdate.content["unsigned"]["transaction_id"] is String) {
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txn.rawDelete("DELETE FROM Events WHERE event_id=?",
[eventUpdate.content["unsigned"]["transaction_id"]]);
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}
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}
if (type == "history") return null;
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if (type != "account_data") {
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final String now = DateTime.now().millisecondsSinceEpoch.toString();
txn.rawInsert(
"INSERT OR REPLACE INTO RoomStates VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)",
[
eventContent["event_id"] ?? now,
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chatId,
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eventContent["origin_server_ts"] ?? now,
eventContent["sender"],
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stateKey,
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json.encode(eventContent["unsigned"] ?? ""),
json.encode(eventContent["prev_content"] ?? ""),
eventContent["type"],
json.encode(eventContent["content"]),
]);
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} else if (type == "account_data") {
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txn.rawInsert("INSERT OR REPLACE INTO RoomAccountData VALUES(?, ?, ?)", [
eventContent["type"],
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chatId,
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json.encode(eventContent["content"]),
]);
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}
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return null;
}
/// Returns a User object by a given Matrix ID and a Room.
Future<User> getUser({String matrixID, Room room}) async {
List<Map<String, dynamic>> res = await _db.rawQuery(
"SELECT * FROM RoomStates WHERE state_key=? AND room_id=?",
[matrixID, room.id]);
if (res.length != 1) return null;
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return Event.fromJson(res[0], room).asUser;
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}
/// Returns a list of events for the given room and sets all participants.
Future<List<Event>> getEventList(Room room) async {
List<Map<String, dynamic>> eventRes = await _db.rawQuery(
"SELECT * " +
" FROM Events " +
" WHERE room_id=?" +
" GROUP BY event_id " +
" ORDER BY origin_server_ts DESC",
[room.id]);
List<Event> eventList = [];
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for (num i = 0; i < eventRes.length; i++) {
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eventList.add(Event.fromJson(eventRes[i], room));
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}
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return eventList;
}
/// Returns all rooms, the client is participating. Excludes left rooms.
Future<List<Room>> getRoomList({bool onlyLeft = false}) async {
List<Map<String, dynamic>> res = await _db.rawQuery("SELECT * " +
" FROM Rooms" +
" WHERE membership" +
(onlyLeft ? "=" : "!=") +
"'leave' " +
" GROUP BY room_id ");
List<Room> roomList = [];
for (num i = 0; i < res.length; i++) {
Room room = await Room.getRoomFromTableRow(
res[i],
client,
states: getStatesFromRoomId(res[i]["room_id"]),
roomAccountData: getAccountDataFromRoomId(res[i]["room_id"]),
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);
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roomList.add(room);
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}
return roomList;
}
Future<List<Map<String, dynamic>>> getStatesFromRoomId(String id) async {
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return _db.rawQuery(
"SELECT * FROM RoomStates WHERE room_id=? AND type IS NOT NULL", [id]);
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}
Future<List<Map<String, dynamic>>> getAccountDataFromRoomId(String id) async {
return _db.rawQuery("SELECT * FROM RoomAccountData WHERE room_id=?", [id]);
}
Future<void> resetNotificationCount(String roomID) async {
await _db.rawDelete(
"UPDATE Rooms SET notification_count=0, highlight_count=0 WHERE room_id=?",
[roomID]);
return;
}
Future<void> forgetRoom(String roomID) async {
await _db.rawDelete("DELETE FROM Rooms WHERE room_id=?", [roomID]);
return;
}
/// Searches for the event in the store.
Future<Event> getEventById(String eventID, Room room) async {
List<Map<String, dynamic>> res = await _db.rawQuery(
"SELECT * FROM Events WHERE event_id=? AND room_id=?",
[eventID, room.id]);
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if (res.isEmpty) return null;
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return Event.fromJson(res[0], room);
}
Future<Map<String, AccountData>> getAccountData() async {
Map<String, AccountData> newAccountData = {};
List<Map<String, dynamic>> rawAccountData =
await _db.rawQuery("SELECT * FROM AccountData");
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for (int i = 0; i < rawAccountData.length; i++) {
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newAccountData[rawAccountData[i]["type"]] =
AccountData.fromJson(rawAccountData[i]);
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}
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return newAccountData;
}
Future<Map<String, Presence>> getPresences() async {
Map<String, Presence> newPresences = {};
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List<Map<String, dynamic>> rawPresences =
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await _db.rawQuery("SELECT * FROM Presences");
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for (int i = 0; i < rawPresences.length; i++) {
Map<String, dynamic> rawPresence = {
"sender": rawPresences[i]["sender"],
"content": json.decode(rawPresences[i]["content"]),
};
newPresences[rawPresences[i]["type"]] = Presence.fromJson(rawPresence);
}
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return newPresences;
}
Future removeEvent(String eventId) async {
assert(eventId != "");
await _db.rawDelete("DELETE FROM Events WHERE event_id=?", [eventId]);
return;
}
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Future<void> storeFile(Uint8List bytes, String mxcUri) async {
await _db.rawInsert(
"INSERT OR REPLACE INTO Files VALUES(?, ?, ?)",
[mxcUri, bytes, DateTime.now().millisecondsSinceEpoch],
);
return;
}
Future<Uint8List> getFile(String mxcUri) async {
List<Map<String, dynamic>> res = await _db.rawQuery(
"SELECT * FROM Files WHERE mxc_uri=?",
[mxcUri],
);
if (res.isEmpty) return null;
return res.first["bytes"];
}
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static final Map<String, String> schemes = {
/// The database scheme for the Room class.
'Rooms': 'CREATE TABLE IF NOT EXISTS Rooms(' +
'room_id TEXT PRIMARY KEY, ' +
'membership TEXT, ' +
'highlight_count INTEGER, ' +
'notification_count INTEGER, ' +
'prev_batch TEXT, ' +
'joined_member_count INTEGER, ' +
'invited_member_count INTEGER, ' +
'heroes TEXT, ' +
'UNIQUE(room_id))',
/// The database scheme for the TimelineEvent class.
'Events': 'CREATE TABLE IF NOT EXISTS Events(' +
'event_id TEXT PRIMARY KEY, ' +
'room_id TEXT, ' +
'origin_server_ts INTEGER, ' +
'sender TEXT, ' +
'type TEXT, ' +
'unsigned TEXT, ' +
'content TEXT, ' +
'prev_content TEXT, ' +
'state_key TEXT, ' +
"status INTEGER, " +
'UNIQUE(event_id))',
/// The database scheme for room states.
'RoomStates': 'CREATE TABLE IF NOT EXISTS RoomStates(' +
'event_id TEXT PRIMARY KEY, ' +
'room_id TEXT, ' +
'origin_server_ts INTEGER, ' +
'sender TEXT, ' +
'state_key TEXT, ' +
'unsigned TEXT, ' +
'prev_content TEXT, ' +
'type TEXT, ' +
'content TEXT, ' +
'UNIQUE(room_id,state_key,type))',
/// The database scheme for room states.
'AccountData': 'CREATE TABLE IF NOT EXISTS AccountData(' +
'type TEXT PRIMARY KEY, ' +
'content TEXT, ' +
'UNIQUE(type))',
/// The database scheme for room states.
'RoomAccountData': 'CREATE TABLE IF NOT EXISTS RoomAccountData(' +
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'type TEXT, ' +
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'room_id TEXT, ' +
'content TEXT, ' +
'UNIQUE(type,room_id))',
/// The database scheme for room states.
'Presences': 'CREATE TABLE IF NOT EXISTS Presences(' +
'type TEXT PRIMARY KEY, ' +
'sender TEXT, ' +
'content TEXT, ' +
'UNIQUE(sender))',
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/// The database scheme for room states.
'Files': 'CREATE TABLE IF NOT EXISTS Files(' +
'mxc_uri TEXT PRIMARY KEY, ' +
'bytes BLOB, ' +
'saved_at INTEGER, ' +
'UNIQUE(mxc_uri))',
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};
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@override
int get maxFileSize => 1 * 1024 * 1024;
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}