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108 lines
2.6 KiB
108 lines
2.6 KiB
import 'dart:convert';
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import 'package:pointycastle/export.dart';
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import '/utils/encryption/crypto_utils.dart';
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import '/utils/encryption/aes_helper.dart';
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import '/utils/storage/database.dart';
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import '/models/friends.dart';
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const messageTypeSender = 'sender';
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const messageTypeReceiver = 'receiver';
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class Message {
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String id;
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String symmetricKey;
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String messageThreadKey;
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String data;
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String senderId;
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String senderUsername;
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String createdAt;
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Message({
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required this.id,
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required this.symmetricKey,
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required this.messageThreadKey,
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required this.data,
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required this.senderId,
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required this.senderUsername,
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required this.createdAt,
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});
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factory Message.fromJson(Map<String, dynamic> json, RSAPrivateKey privKey) {
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var symmetricKey = CryptoUtils.rsaDecrypt(
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base64.decode(json['symmetric_key']),
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privKey,
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);
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var data = AesHelper.aesDecrypt(
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symmetricKey,
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base64.decode(json['message_data']['data']),
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);
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var senderId = AesHelper.aesDecrypt(
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symmetricKey,
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base64.decode(json['message_data']['sender_id']),
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);
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return Message(
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id: json['id'],
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messageThreadKey: json['message_thread_key'],
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symmetricKey: base64.encode(symmetricKey),
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data: data,
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senderId: senderId,
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senderUsername: 'Unknown', // TODO
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createdAt: json['created_at'],
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);
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}
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@override
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String toString() {
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return '''
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id: $id
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data: $data
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senderId: $senderId
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senderUsername: $senderUsername
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createdAt: $createdAt
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''';
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}
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Map<String, dynamic> toMap() {
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return {
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'id': id,
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'message_thread_key': messageThreadKey,
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'symmetric_key': symmetricKey,
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'data': data,
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'sender_id': senderId,
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'sender_username': senderUsername,
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'created_at': createdAt,
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};
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}
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}
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Future<List<Message>> getMessagesForThread(String messageThreadKey) async {
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final db = await getDatabaseConnection();
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List<dynamic> whereArguments = [messageThreadKey];
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final List<Map<String, dynamic>> maps = await db.query(
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'messages',
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where: 'message_thread_key = ?',
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whereArgs: whereArguments,
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orderBy: 'created_at DESC',
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);
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return List.generate(maps.length, (i) {
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return Message(
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id: maps[i]['id'],
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messageThreadKey: maps[i]['message_thread_key'],
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symmetricKey: maps[i]['symmetric_key'],
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data: maps[i]['data'],
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senderId: maps[i]['sender_id'],
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senderUsername: maps[i]['sender_username'],
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createdAt: maps[i]['created_at'],
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);
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});
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}
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