import 'dart:convert';
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import 'dart:io';
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import 'dart:typed_data';
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import 'package:Envelope/database/models/conversation_users.dart';
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import 'package:sqflite/sql.dart';
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import 'package:uuid/uuid.dart';
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import '/database/models/conversations.dart';
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import '/database/models/friends.dart';
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import '/database/models/my_profile.dart';
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import '/utils/encryption/aes_helper.dart';
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import '/utils/strings.dart';
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import '/utils/storage/database.dart';
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class ConversationsRepository {
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static Future<Conversation> createConversation(String title, List<Friend> friends, bool twoUser) async {
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final db = await getDatabaseConnection();
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MyProfile profile = await MyProfile.getProfile();
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var uuid = const Uuid();
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final String conversationId = uuid.v4();
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Uint8List symmetricKey = AesHelper.deriveKey(generateRandomString(32));
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Conversation conversation = Conversation(
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id: conversationId,
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userId: profile.id,
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symmetricKey: base64.encode(symmetricKey),
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admin: true,
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name: title,
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twoUser: twoUser,
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status: ConversationStatus.pending,
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isRead: true,
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messageExpiryDefault: 'no_expiry',
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adminAddMembers: true,
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adminEditInfo: true,
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adminSendMessages: false,
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createdAt: DateTime.now(),
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updatedAt: DateTime.now(),
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);
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await db.insert(
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'conversations',
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conversation.toMap(),
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conflictAlgorithm: ConflictAlgorithm.replace,
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);
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await db.insert(
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'conversation_users',
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ConversationUser(
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id: uuid.v4(),
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userId: profile.id,
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conversationId: conversationId,
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username: profile.username,
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associationKey: uuid.v4(),
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publicKey: profile.publicKey!,
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admin: true,
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).toMap(),
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conflictAlgorithm: ConflictAlgorithm.fail,
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);
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for (Friend friend in friends) {
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await db.insert(
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'conversation_users',
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ConversationUser(
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id: uuid.v4(),
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userId: friend.friendId,
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conversationId: conversationId,
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username: friend.username,
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associationKey: uuid.v4(),
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publicKey: friend.publicKey,
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admin: twoUser ? true : false,
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).toMap(),
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conflictAlgorithm: ConflictAlgorithm.replace,
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);
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}
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if (twoUser) {
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List<Map<String, dynamic>> maps = await db.query(
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'conversation_users',
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where: 'conversation_id = ? AND user_id != ?',
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whereArgs: [ conversation.id, profile.id ],
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);
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if (maps.length != 1) {
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throw ArgumentError('Invalid user id');
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}
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conversation.name = maps[0]['username'];
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await db.insert(
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'conversations',
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conversation.toMap(),
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conflictAlgorithm: ConflictAlgorithm.replace,
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);
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}
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return conversation;
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}
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static Future<Conversation> getConversationById(String id) async {
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final db = await getDatabaseConnection();
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final List<Map<String, dynamic>> maps = await db.query(
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'conversations',
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where: 'id = ?',
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whereArgs: [id],
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);
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if (maps.length != 1) {
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throw ArgumentError('Invalid user id');
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}
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File? file;
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if (maps[0]['file'] != null && maps[0]['file'] != '') {
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file = File(maps[0]['file']);
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}
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return Conversation(
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id: maps[0]['id'],
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userId: maps[0]['user_id'],
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symmetricKey: maps[0]['symmetric_key'],
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admin: maps[0]['admin'] == 1,
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name: maps[0]['name'],
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twoUser: maps[0]['two_user'] == 1,
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status: ConversationStatus.values[maps[0]['status']],
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isRead: maps[0]['is_read'] == 1,
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icon: file,
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messageExpiryDefault: maps[0]['message_expiry'],
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adminAddMembers: maps[0]['admin_add_members'] == 1,
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adminEditInfo: maps[0]['admin_edit_info'] == 1,
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adminSendMessages: maps[0]['admin_send_messages'] == 1,
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createdAt: DateTime.parse(maps[0]['created_at']),
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updatedAt: DateTime.parse(maps[0]['updated_at']),
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);
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}
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static Future<List<Conversation>> getConversations() async {
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final db = await getDatabaseConnection();
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final List<Map<String, dynamic>> maps = await db.query(
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'conversations',
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orderBy: 'name',
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);
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return List.generate(maps.length, (i) {
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File? file;
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if (maps[i]['file'] != null && maps[i]['file'] != '') {
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file = File(maps[i]['file']);
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}
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return Conversation(
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id: maps[i]['id'],
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userId: maps[i]['user_id'],
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symmetricKey: maps[i]['symmetric_key'],
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admin: maps[i]['admin'] == 1,
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name: maps[i]['name'],
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twoUser: maps[i]['two_user'] == 1,
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status: ConversationStatus.values[maps[i]['status']],
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isRead: maps[i]['is_read'] == 1,
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icon: file,
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messageExpiryDefault: maps[i]['message_expiry'] ?? 'no_expiry',
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adminAddMembers: maps[i]['admin_add_members'] == 1,
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adminEditInfo: maps[i]['admin_edit_info'] == 1,
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adminSendMessages: maps[i]['admin_send_messages'] == 1,
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createdAt: DateTime.parse(maps[i]['created_at']),
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updatedAt: DateTime.parse(maps[i]['updated_at']),
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);
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});
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}
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static Future<Conversation?> getTwoUserConversation(String userId) async {
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final db = await getDatabaseConnection();
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MyProfile profile = await MyProfile.getProfile();
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final List<Map<String, dynamic>> maps = await db.rawQuery(
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'''
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SELECT conversations.* FROM conversations
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LEFT JOIN conversation_users ON conversation_users.conversation_id = conversations.id
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WHERE conversation_users.user_id = ?
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AND conversation_users.user_id != ?
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AND conversations.two_user = 1
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''',
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[ userId, profile.id ],
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);
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if (maps.length != 1) {
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return null;
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}
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return Conversation(
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id: maps[0]['id'],
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userId: maps[0]['user_id'],
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symmetricKey: maps[0]['symmetric_key'],
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admin: maps[0]['admin'] == 1,
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name: maps[0]['name'],
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twoUser: maps[0]['two_user'] == 1,
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status: ConversationStatus.values[maps[0]['status']],
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isRead: maps[0]['is_read'] == 1,
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messageExpiryDefault: maps[0]['message_expiry'],
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adminAddMembers: maps[0]['admin_add_members'] == 1,
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adminEditInfo: maps[0]['admin_edit_info'] == 1,
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adminSendMessages: maps[0]['admin_send_messages'] == 1,
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createdAt: DateTime.parse(maps[0]['created_at']),
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updatedAt: DateTime.parse(maps[0]['updated_at']),
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);
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}
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static Future<DateTime?> getLatestUpdatedAt() async {
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final db = await getDatabaseConnection();
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final List<Map<String, dynamic>> maps = await db.rawQuery(
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'''
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SELECT conversations.updated_at FROM conversations
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ORDER BY updated_at DESC
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LIMIT 1;
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'''
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);
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return maps.isNotEmpty ? DateTime.parse(maps[0]['updated_at']) : null;
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}
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}
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