Envelope/mobile/lib/utils/storage/conversations.dart

import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:pointycastle/export.dart';
import 'package:sqflite/sqflite.dart';
import '/models/conversations.dart';
import '/models/conversation_users.dart';
import '/utils/storage/database.dart';
import '/utils/storage/session_cookie.dart';
import '/utils/storage/encryption_keys.dart';
import '/utils/encryption/aes_helper.dart';

Future<void> updateConversations() async {
    RSAPrivateKey privKey = await getPrivateKey();

    var resp = await http.get(
            Uri.parse('${dotenv.env["SERVER_URL"]}api/v1/auth/conversations'),
            headers: {
                'cookie': await getSessionCookie(),
            }
    );

    if (resp.statusCode != 200) {
        throw Exception(resp.body);
    }

    List<Conversation> conversations = [];
    List<String> conversationsDetailIds = [];

    List<dynamic> conversationsJson = jsonDecode(resp.body);

    for (var i = 0; i < conversationsJson.length; i++) {
        Conversation conversation = Conversation.fromJson(
                conversationsJson[i] as Map<String, dynamic>,
                privKey,
        );
        conversations.add(conversation);
        conversationsDetailIds.add(conversation.conversationDetailId);
    }

    Map<String, String> params = {};
    params['conversation_detail_ids'] = conversationsDetailIds.join(',');
    var uri = Uri.parse('${dotenv.env["SERVER_URL"]}api/v1/auth/conversation_details');
    uri = uri.replace(queryParameters: params);

    resp = await http.get(
            uri,
            headers: {
                'cookie': await getSessionCookie(),
            }
    );

    if (resp.statusCode != 200) {
        throw Exception(resp.body);
    }

    final db = await getDatabaseConnection();

    List<dynamic> conversationsDetailsJson = jsonDecode(resp.body);
    for (var i = 0; i < conversationsDetailsJson.length; i++) {
        var conversationDetailJson = conversationsDetailsJson[i] as Map<String, dynamic>;
        var conversation = findConversationByDetailId(conversations, conversationDetailJson['id']);

        conversation.name = AesHelper.aesDecrypt(
                base64.decode(conversation.symmetricKey),
                base64.decode(conversationDetailJson['name']),
        );

        await db.insert(
                'conversations',
                conversation.toMap(),
                conflictAlgorithm: ConflictAlgorithm.replace,
        );

        List<dynamic> usersData = json.decode(
            AesHelper.aesDecrypt(
                base64.decode(conversation.symmetricKey),
                base64.decode(conversationDetailJson['users']),
            )
        );

        for (var i = 0; i < usersData.length; i++) {
            ConversationUser conversationUser = ConversationUser.fromJson(
                usersData[i] as Map<String, dynamic>,
                conversation.id,
            );

            await db.insert(
                'conversation_users',
                conversationUser.toMap(),
                conflictAlgorithm: ConflictAlgorithm.replace,
            );
        }
    }
}