public void Send(string name, string message, string recipientName)
{
ChatRoomMessageService messageService = new ChatRoomMessageService();
UsersService userService = new UsersService();
ChatRoomsService roomService = new ChatRoomsService();
if (recipientName != null)
{
ChatRoomMessage chatRoomMessage = new ChatRoomMessage();
User sender = userService.FindUserByUsername(name);
User recipient = userService.FindUserByUsername(recipientName);
if (sender != null && recipient != null)
{
chatRoomMessage.CreatedBy = sender.UserId;
chatRoomMessage.DateCreated = DateTime.Now;
chatRoomMessage.Message = message;
chatRoomMessage.SentTo = recipient.UserId;
int roomId = roomService.FindRoomIdForPrivateChat(chatRoomMessage);
if (roomId != -1)
{
chatRoomMessage.RoomId = roomId;
}
else
{
ChatRoom chatRoom = new ChatRoom();
chatRoom.CreatedBy = sender.UserId;
chatRoom.DateCreated = DateTime.Now;
chatRoom.IsDeleted = false;
chatRoom.RoomDescription = "Private chat";
chatRoom.RoomName = "Private_Chat";
chatRoom.IsPrivate = true;
int currentRoomId = roomService.CreateWithId(chatRoom);
chatRoomMessage.RoomId = currentRoomId;
}
messageService.Create(chatRoomMessage);
previousMessages = messageService.FindAllMessagesForCurrentRoom(chatRoomMessage.RoomId);
Clients.User(recipientName).addNewMessageToPage(name, message, recipientName, previousMessages);
}
}
else
{
ChatRoomMessage chatRoomMessage = new ChatRoomMessage();
User sender = userService.FindUserByUsername(name);
if (sender != null)
{
chatRoomMessage.CreatedBy = sender.UserId;
chatRoomMessage.DateCreated = DateTime.Now;
chatRoomMessage.Message = message;
chatRoomMessage.SentTo = null;
chatRoomMessage.RoomId = 1; // MASTER ROOM
messageService.Create(chatRoomMessage);
previousMessages = messageService.FindAllMessagesForCurrentRoom(chatRoomMessage.RoomId);
Clients.All.addNewMessageToPage(name, message, recipientName, previousMessages);
}
}
}
public void InitialCheckUp()
{
ChatRoomMessageService messageService = new ChatRoomMessageService();
ChatRoomsService roomService = new ChatRoomsService();
List<ChatMessageModel> previousMessages = new List<ChatMessageModel>();
ChatRoomMessage chatRoomMessage = new ChatRoomMessage();
previousMessages = messageService.FindAllMessagesForCurrentRoom(1);
Clients.All.addNewMessageToPageInitial(previousMessages);
}
public object FindById(int messageId)
{
ChatRoomMessage message = new ChatRoomMessage();
message = context.ChatRoomMessages.Find(messageId);
return message;
}
/// <summary>
/// Return a RoomId for new message.
/// </summary>
/// <param name="currentMessage"> Message for sending.</param>
/// <returns>RoomId for currentMessage. If value is -1, need to create new room.</returns>
public int FindRoomIdForPrivateChat(ChatRoomMessage currentMessage)
{
foreach (ChatRoomMessage chatMessage in context.ChatRoomMessages)
{
if (isExistPreviousConversation(currentMessage, chatMessage))
{
return chatMessage.RoomId;
}
}
return -1;
}
/// <summary>
/// Check does already exist combination of Created-SentTo combination to get RoomId
/// </summary>
/// <param name="currentMessage">Message for sending.</param>
/// <param name="chatMessage">Loop thought all messages in database.</param>
/// <returns>True if exist, False if isn't exist.</returns>
private Boolean isExistPreviousConversation(ChatRoomMessage currentMessage, ChatRoomMessage chatMessage)
{
if (chatMessage.CreatedBy.Equals(currentMessage.CreatedBy) && chatMessage.SentTo.Equals(currentMessage.SentTo)
|| chatMessage.CreatedBy.Equals(currentMessage.SentTo) && chatMessage.SentTo.Equals(currentMessage.CreatedBy))
{
return true;
}
else
{
return false;
}
}
public IList<ChatMessageModel> LoadPrivateMessagesHistory(string userFrom, string userTo)
{
UsersService userService = new UsersService();
ChatRoomMessageService msgService = new ChatRoomMessageService();
User sender = userService.FindUserByUsername(userFrom);
User recipient = userService.FindUserByUsername(userTo);
ChatRoomMessage messageTemp = new ChatRoomMessage();
messageTemp.CreatedBy = sender.UserId;
messageTemp.SentTo = recipient.UserId;
int roomId = FindRoomIdForPrivateChat(messageTemp);
if (roomId != -1)
{
return msgService.FindAllMessagesForCurrentRoom(roomId).ToList();
}
return null;
}
