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@ -11,14 +11,10 @@ import '/utils/encryption/aes_helper.dart'; |
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import '/utils/storage/database.dart'; |
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import '/utils/strings.dart'; |
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Conversation findConversationByDetailId(List<Conversation> conversations, String id) { |
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for (var conversation in conversations) { |
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if (conversation.conversationDetailId == id) { |
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return conversation; |
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} |
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} |
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// Or return `null`. |
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throw ArgumentError.value(id, "id", "No element with that id"); |
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enum ConversationStatus { |
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complete, |
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pending, |
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error, |
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} |
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class Conversation { |
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@ -28,6 +24,7 @@ class Conversation { |
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String symmetricKey; |
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bool admin; |
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String name; |
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ConversationStatus status; |
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Conversation({ |
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required this.id, |
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@ -36,35 +33,86 @@ class Conversation { |
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required this.symmetricKey, |
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required this.admin, |
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required this.name, |
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required this.status, |
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}); |
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factory Conversation.fromJson(Map<String, dynamic> json, RSAPrivateKey privKey) { |
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var symmetricKeyDecrypted = CryptoUtils.rsaDecrypt( |
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base64.decode(json['symmetric_key']), |
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privKey, |
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base64.decode(json['symmetric_key']), |
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privKey, |
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); |
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var detailId = AesHelper.aesDecrypt( |
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symmetricKeyDecrypted, |
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base64.decode(json['conversation_detail_id']), |
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symmetricKeyDecrypted, |
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base64.decode(json['conversation_detail_id']), |
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); |
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var admin = AesHelper.aesDecrypt( |
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symmetricKeyDecrypted, |
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base64.decode(json['admin']), |
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symmetricKeyDecrypted, |
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base64.decode(json['admin']), |
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); |
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return Conversation( |
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id: json['id'], |
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userId: json['user_id'], |
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conversationDetailId: detailId, |
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symmetricKey: base64.encode(symmetricKeyDecrypted), |
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admin: admin == 'true', |
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name: 'Unknown', |
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id: json['id'], |
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userId: json['user_id'], |
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conversationDetailId: detailId, |
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symmetricKey: base64.encode(symmetricKeyDecrypted), |
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admin: admin == 'true', |
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name: 'Unknown', |
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status: ConversationStatus.complete, |
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); |
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} |
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Future<Map<String, dynamic>> toJson() async { |
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MyProfile profile = await MyProfile.getProfile(); |
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var symKey = base64.decode(symmetricKey); |
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List<ConversationUser> users = await getConversationUsers(this); |
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List<Object> userConversations = []; |
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for (var x in users) { |
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print(x.toMap()); |
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} |
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for (ConversationUser user in users) { |
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if (profile.id == user.userId) { |
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userConversations.add({ |
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'id': user.id, |
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'user_id': profile.id, |
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'conversation_detail_id': AesHelper.aesEncrypt(symKey, Uint8List.fromList(id.codeUnits)), |
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'admin': AesHelper.aesEncrypt(symKey, Uint8List.fromList((admin ? 'true' : 'false').codeUnits)), |
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'symmetric_key': base64.encode(CryptoUtils.rsaEncrypt(symKey, profile.publicKey!)), |
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}); |
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continue; |
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} |
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Friend friend = await getFriendByFriendId(user.userId); |
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RSAPublicKey pubKey = CryptoUtils.rsaPublicKeyFromPem(friend.asymmetricPublicKey); |
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userConversations.add({ |
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'id': user.id, |
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'user_id': friend.userId, |
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'conversation_detail_id': AesHelper.aesEncrypt(symKey, Uint8List.fromList(id.codeUnits)), |
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'admin': AesHelper.aesEncrypt(symKey, Uint8List.fromList((admin ? 'true' : 'false').codeUnits)), |
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'symmetric_key': base64.encode(CryptoUtils.rsaEncrypt(symKey, pubKey)), |
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}); |
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} |
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for (var x in userConversations) { |
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print(x); |
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} |
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return { |
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'id': id, |
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'name': AesHelper.aesEncrypt(symKey, Uint8List.fromList(name.codeUnits)), |
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'users': AesHelper.aesEncrypt(symKey, Uint8List.fromList(jsonEncode(users).codeUnits)), |
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'user_conversations': userConversations, |
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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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@ -84,6 +132,7 @@ class Conversation { |
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'symmetric_key': symmetricKey, |
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'admin': admin ? 1 : 0, |
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'name': name, |
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'status': status.index, |
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}; |
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} |
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} |
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@ -107,43 +156,57 @@ Future<Conversation> createConversation(String title, List<Friend> friends) asyn |
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symmetricKey: base64.encode(symmetricKey), |
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admin: true, |
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name: title, |
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status: ConversationStatus.pending, |
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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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'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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conversationId: conversationId, |
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username: profile.username, |
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associationKey: associationKey, |
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admin: false, |
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).toMap(), |
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conflictAlgorithm: ConflictAlgorithm.replace, |
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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: associationKey, |
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admin: true, |
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).toMap(), |
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conflictAlgorithm: ConflictAlgorithm.replace, |
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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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conversationId: conversationId, |
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username: friend.username, |
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associationKey: associationKey, |
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admin: false, |
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).toMap(), |
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conflictAlgorithm: ConflictAlgorithm.replace, |
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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: associationKey, |
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admin: 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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return conversation; |
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} |
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Conversation findConversationByDetailId(List<Conversation> conversations, String id) { |
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for (var conversation in conversations) { |
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if (conversation.conversationDetailId == id) { |
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return conversation; |
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} |
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} |
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// Or return `null`. |
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throw ArgumentError.value(id, "id", "No element with that id"); |
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} |
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// A method that retrieves all the dogs from the dogs table. |
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Future<List<Conversation>> getConversations() async { |
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final db = await getDatabaseConnection(); |
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@ -152,12 +215,38 @@ Future<List<Conversation>> getConversations() async { |
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return List.generate(maps.length, (i) { |
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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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conversationDetailId: maps[i]['conversation_detail_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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id: maps[i]['id'], |
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userId: maps[i]['user_id'], |
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conversationDetailId: maps[i]['conversation_detail_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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status: ConversationStatus.values[maps[i]['status']], |
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); |
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}); |
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} |
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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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return Conversation( |
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id: maps[0]['id'], |
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userId: maps[0]['user_id'], |
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conversationDetailId: maps[0]['conversation_detail_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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status: ConversationStatus.values[maps[0]['status']], |
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); |
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} |