79 lines
2.4 KiB
Dart
79 lines
2.4 KiB
Dart
import 'package:sqflite/sqflite.dart';
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import 'package:path/path.dart';
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import 'package:chepuhagram/data/models/message_model.dart';
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class LocalDbService {
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static final LocalDbService _instance = LocalDbService._internal();
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static Database? _database;
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factory LocalDbService() => _instance;
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LocalDbService._internal();
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Future<Database> get database async {
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if (_database != null) return _database!;
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_database = await _initDb();
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return _database!;
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}
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Future<Database> _initDb() async {
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String path = join(await getDatabasesPath(), 'chat_app.db');
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return await openDatabase(
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path,
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version: 1,
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onCreate: (db, version) async {
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await db.execute('''
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CREATE TABLE messages(
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id INTEGER PRIMARY KEY,
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sender_id INTEGER,
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receiver_id INTEGER,
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content TEXT,
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timestamp TEXT
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)
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''');
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},
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);
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}
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// Сохранение списка сообщений (из истории)
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Future<void> saveMessages(List<dynamic> messages) async {
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final db = await database;
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Batch batch = db.batch();
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for (var msg in messages) {
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if (msg is MessageModel) {
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batch.insert('messages', {
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'id': msg.id,
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'sender_id': msg.senderId,
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'receiver_id': msg.receiverId,
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'content': msg.text, // ВАЖНО: сохраняй зашифрованный текст!
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'timestamp': msg.createdAt.toIso8601String(),
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}, conflictAlgorithm: ConflictAlgorithm.replace);
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} else {
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// Если это Map из API
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batch.insert('messages', {
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'id': msg['id'],
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'sender_id': msg['sender_id'],
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'receiver_id': msg['receiver_id'], // Убедись, что ключ совпадает с API
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'content': msg['content'],
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'timestamp': msg['timestamp'],
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}, conflictAlgorithm: ConflictAlgorithm.replace);
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}
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}
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await batch.commit(noResult: true);
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}
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// Получение сообщений конкретного чата
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Future<List<Map<String, dynamic>>> getChatHistory(
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int contactId,
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int myId,
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) async {
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final db = await database;
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return await db.query(
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'messages',
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where:
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'(sender_id = ? AND receiver_id = ?) OR (sender_id = ? AND receiver_id = ?)',
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whereArgs: [contactId, myId, myId, contactId],
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orderBy: 'timestamp ASC',
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);
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}
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}
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