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174 lines
5.0 KiB
174 lines
5.0 KiB
import 'dart:convert';
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import 'dart:io';
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import 'package:Envelope/utils/storage/get_file.dart';
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import 'package:flutter_dotenv/flutter_dotenv.dart';
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import 'package:pointycastle/impl.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '/utils/encryption/aes_helper.dart';
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import '/utils/encryption/crypto_utils.dart';
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// TODO: Replace this with the prod url when server is deployed
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String defaultServerUrl = dotenv.env['SERVER_URL'] ?? 'http://localhost:8080/';
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class MyProfile {
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String id;
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String username;
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String? friendId;
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RSAPrivateKey? privateKey;
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RSAPublicKey? publicKey;
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String? symmetricKey;
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DateTime? loggedInAt;
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File? image;
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String? imageLink;
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String messageExpiryDefault = 'no_expiry';
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MyProfile({
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required this.id,
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required this.username,
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this.friendId,
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this.privateKey,
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this.publicKey,
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this.symmetricKey,
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this.loggedInAt,
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this.image,
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this.imageLink,
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required this.messageExpiryDefault,
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});
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factory MyProfile._fromJson(Map<String, dynamic> json) {
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DateTime loggedInAt = DateTime.now();
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if (json.containsKey('logged_in_at')) {
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loggedInAt = DateTime.parse(json['logged_in_at']);
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}
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RSAPrivateKey privateKey = CryptoUtils.rsaPrivateKeyFromPem(json['asymmetric_private_key']);
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RSAPublicKey publicKey = CryptoUtils.rsaPublicKeyFromPem(json['asymmetric_public_key']);
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return MyProfile(
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id: json['user_id'],
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username: json['username'],
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privateKey: privateKey,
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publicKey: publicKey,
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symmetricKey: json['symmetric_key'],
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loggedInAt: loggedInAt,
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messageExpiryDefault: json['message_expiry_default'],
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image: json['file'] != null ? File(json['file']) : null,
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imageLink: json['image_link'],
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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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user_id: $id
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username: $username
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logged_in_at: $loggedInAt
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public_key: $publicKey
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private_key: $privateKey
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''';
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}
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String toJson() {
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return jsonEncode(<String, dynamic>{
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'user_id': id,
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'username': username,
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'asymmetric_private_key': privateKey != null ?
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CryptoUtils.encodeRSAPrivateKeyToPem(privateKey!) :
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null,
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'asymmetric_public_key': publicKey != null ?
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CryptoUtils.encodeRSAPublicKeyToPem(publicKey!) :
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null,
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'symmetric_key': symmetricKey,
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'logged_in_at': loggedInAt?.toIso8601String(),
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'message_expiry_default': messageExpiryDefault,
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'file': image?.path,
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'image_link': imageLink,
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});
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}
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static Future<MyProfile> login(Map<String, dynamic> json, String password) async {
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json['asymmetric_private_key'] = AesHelper.aesDecrypt(
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password,
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base64.decode(json['asymmetric_private_key'])
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);
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json['symmetric_key'] = base64.encode(CryptoUtils.rsaDecrypt(
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base64.decode(json['symmetric_key']),
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CryptoUtils.rsaPrivateKeyFromPem(json['asymmetric_private_key']),
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));
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if (json['image_link'] != '') {
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File profileIcon = await getFile(
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'$defaultServerUrl/files/${['image_link']}',
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json['user_id'],
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json['symmetric_key'],
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);
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json['file'] = profileIcon.path;
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}
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MyProfile profile = MyProfile._fromJson(json);
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final preferences = await SharedPreferences.getInstance();
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preferences.setString('profile', profile.toJson());
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return profile;
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}
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static Future<void> logout() async {
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final preferences = await SharedPreferences.getInstance();
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preferences.remove('profile');
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}
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static Future<MyProfile> getProfile() async {
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final preferences = await SharedPreferences.getInstance();
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String? profileJson = preferences.getString('profile');
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if (profileJson == null) {
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throw Exception('No profile');
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}
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return MyProfile._fromJson(json.decode(profileJson));
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}
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static Future<bool> isLoggedIn() async {
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MyProfile profile = await MyProfile.getProfile();
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if (profile.loggedInAt == null) {
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return false;
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}
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return profile.loggedInAt!.add(const Duration(hours: 12)).isAfter(
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(DateTime.now())
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);
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}
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static Future<RSAPrivateKey> getPrivateKey() async {
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MyProfile profile = await MyProfile.getProfile();
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if (profile.privateKey == null) {
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throw Exception('Could not get privateKey');
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}
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return profile.privateKey!;
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}
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static Future<String> getBaseServerUrl() async {
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final preferences = await SharedPreferences.getInstance();
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return preferences.getString('server_url') ?? defaultServerUrl;
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}
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static setServerUrl(String url) async {
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final preferences = await SharedPreferences.getInstance();
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preferences.setString('server_url', url);
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}
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static Future<Uri> getServerUrl(String path) async {
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final preferences = await SharedPreferences.getInstance();
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String? baseUrl = preferences.getString('server_url');
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if (baseUrl == null) {
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setServerUrl(defaultServerUrl);
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return Uri.parse('$defaultServerUrl$path');
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}
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return Uri.parse('$baseUrl$path');
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}
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}
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