private void UpdateLastSeen()
{
using (var context = new ApplicationDbContext())
{
// get user name
var userName = Context.User.Identity.Name;
// get time now
var lastSeen = DateTime.Now;
// update chat rooms in memory
var rooms = from r in ChatRooms.GetAll()
where r.User1ID.Equals(userName) || r.User2ID.Equals(userName)
select r;
foreach (var room in rooms)
{
if (room.User1ID.Equals(userName))
{
room.User1LastSeen = lastSeen;
}
else
{
room.User2LastSeen = lastSeen;
}
Clients.OthersInGroup(room.Name).updateLastSeen(new { Name = room.Name, LastSeen = lastSeen });
}
// update user last seen time in database
var userManager = new UserManager <ApplicationUser>(new UserStore <ApplicationUser>(context));
var user = userManager.FindByName(userName);
user.LastSeen = lastSeen;
userManager.Update(user);
}
}
/// <summary>
/// Send message to the chat room
/// </summary>
/// <param name="roomName">the name of the room</param>
/// <param name="message">the message to send</param>
/// <param name="senderID">The ID of the sender</param>
/// <param name="senderName">The name of the sender</param>
public async Task Send(string roomName, string message, string senderID, string senderName, int messageType)
{
// Get the time now (on server)
DateTime time = DateTime.Now;
// Get the sender details
var sender = await(from u in db.Users
where u.Id.Equals(senderID)
select u).FirstAsync();
// Get the room
var room = ChatRooms.getRoom(roomName);
// Get the receiver details
var receiverID = room.User1DatabaseID.Equals(senderID) ? room.User2ID : room.User1ID;
var receiver = await(from u in db.Users
where u.UserName.Equals(receiverID)
select u).FirstAsync();
// Get message type
var mType = messageType == 0 ? MessageType.NORMAL :
messageType == 1 ? MessageType.SALEREQUEST : MessageType.SYSTEM;
// get last message sent by receiver to sender and check if it was a sale request
//var sendReplyEmail = false;
//var receiverName = "";
//var receiverEmail = "";
//if (mType == MessageType.NORMAL)
//{
// var conv = from c in db.Conversations
// where c.FromUser.UserName.Equals(receiverID) && c.ToUser.UserName.Equals(sender.UserName)
// orderby c.Time descending
// select c;
// var count = await conv.CountAsync();
// if (count > 0)
// {
// var con = await conv.FirstAsync();
// sendReplyEmail = con.MessageType == MessageType.SALEREQUEST;
// if (sendReplyEmail)
// {
// receiverName = receiver.TitleID + " " + receiver.Intials + " " + receiver.Surname;
// receiverEmail = receiver.Email;
// }
// }
//}
// Add conversation
db.Conversations.Add(new Conversation()
{
FromUser = sender,
ToUser = receiver,
MessageStatus = MessageStatus.UNREAD,
Text = message,
Time = time,
MessageType = mType
});
// save changes
await db.SaveChangesAsync();
// Send message to the room
time = time.AddHours(2);
// send message to receiver
await Clients.OthersInGroup(roomName).addMessage(roomName, new ChatMessage()
{
SenderID = senderID,
ReceiverID = receiver.Id,
SenderName = senderName,
Text = message,
Time = time.ToShortDateString() + " @ " + time.ToShortTimeString(),
Read = MessageStatus.UNREAD,
MessageType = mType
});
// update last seen
UpdateLastSeen();
// send reply email to receiver
//if (sendReplyEmail)
//{
// ChatRooms.SendSaleRequestReplyEmail(receiverEmail, receiverName, senderName);
//}
}
public async Task CreateChatRoomForLiveChat(string requestMessage, string customerID, string customerName, string supplierID, int productId)
{
// (Task) Get more necessary supplier details
var supplierDetails = await(from u in db.Users
where u.Id.Equals(supplierID)
select new { id = u.UserName, name = u.TitleID + " " + u.Intials + " " + u.Surname, Email = u.Email }).FirstAsync();
// (Task) Get more details of product involved
var product = await db.Products.FindAsync(productId);
// (Task) Get the number of sale requests of the product
var currentSaleRequestNumber = await(from sr in db.ConversationRoomProducts
where sr.ProductID == productId
select sr).CountAsync();
// Get possible room names
string roomName = customerID + "_" + supplierID;
string roomName2 = supplierID + "_" + customerID;
var user1 = db.Users.Find(customerID);
string customerEmail = user1.Email;
/*Create new room or add product to existing room*/
if (ChatRooms.Exists(roomName)) // room exists
{
// Get room
var room = ChatRooms.getRoom(roomName);
var conRoom = await(from cr in db.ConversationRooms
where cr.Name.Equals(roomName)
select cr).FirstAsync();
// Add product to room
db.ConversationRoomProducts.Add(new ConversationRoomProduct()
{
ConversationRoom = conRoom, Product = product
});
// save changes
await db.SaveChangesAsync();
// Send sale request message
await Send(roomName, requestMessage, customerID, customerName, 1);
}
else if (ChatRooms.Exists(roomName2)) // room exists
{
// Get room
var room = ChatRooms.getRoom(roomName2);
var conRoom = await(from cr in db.ConversationRooms
where cr.Name.Equals(roomName2)
select cr).FirstAsync();
// Add product to room
db.ConversationRoomProducts.Add(new ConversationRoomProduct()
{
ConversationRoom = conRoom, Product = product
});
// save changes
await db.SaveChangesAsync();
// Send sale request message
await Send(roomName2, requestMessage, customerID, customerName, 1);
}
else // room does not exist
{
// Get users involved
var user2 = db.Users.Find(supplierID);
// Create new room
var conRoom = new ConversationRoom()
{
User1 = user1, User2 = user2, Name = roomName
};
db.ConversationRoomProducts.Add(new ConversationRoomProduct()
{
ConversationRoom = conRoom, Product = product
});
Room room = new Room()
{
Name = roomName,
User1ID = Context.User.Identity.Name,
User1Name = customerName,
User1LastSeen = user1.LastSeen,
User1DatabaseID = customerID,
User2ID = supplierDetails.id,
User2Name = supplierDetails.name,
User2LastSeen = user2.LastSeen,
User2DatabaseID = supplierID,
};
// Add room to list of rooms
ChatRooms.Add(room);
// Join room
await Join(room.Name);
// Send room details to client (browser)
await Clients.User(supplierDetails.id).addChatRoom(new
{
Name = room.Name,
OtherUserID = room.User2DatabaseID,
OtherUserName = room.User2Name,
LastSeen = room.User2LastSeen,
Messages = new { },
Products = new { }
});
// save changes
await db.SaveChangesAsync();
// Send sale request message
await Send(roomName, requestMessage, customerID, customerName, 1);
}
// Send a sale request email to the supplier
var supplierEmail = (string.IsNullOrEmpty(product.ContactEmail) || string.IsNullOrWhiteSpace(product.ContactEmail)) ? supplierDetails.Email : product.ContactEmail;
ChatRooms.SendChatRequestEmail(supplierEmail, customerEmail, product.Name, requestMessage);
}
public override System.Threading.Tasks.Task OnConnected()
{
/* Get all the chat rooms and their conversations */
foreach (var room in ChatRooms.GetAll(Context.User.Identity.Name))
{
// Get all the messages in this room
var mis = (from c in db.Conversations
where (c.FromUser.UserName.Equals(room.User1ID) && c.ToUser.UserName.Equals(room.User2ID) ||
(c.FromUser.UserName.Equals(room.User2ID) && c.ToUser.UserName.Equals(room.User1ID)))
orderby c.Time ascending
select new
{
SenderID = c.FromUser.Id,
ReceiverID = c.ToUser.Id,
SenderName = c.FromUser.TitleID + " " + c.FromUser.Intials + " " + c.FromUser.Surname,
Text = c.Text,
Time = c.Time,
Read = c.MessageStatus,
MessageType = c.MessageType
}).ToList();
var messages = (from m in mis
select new ChatMessage
{
SenderID = m.SenderID,
ReceiverID = (room.User1ID.Equals(Context.User.Identity.Name) ? room.User1DatabaseID : room.User2DatabaseID),
SenderName = m.SenderName,
Text = m.Text,
Time = m.Time.AddHours(2).ToShortDateString() + " @ " + m.Time.AddHours(2).ToShortTimeString(),
Read = m.Read,
MessageType = m.MessageType
}).ToArray();
// Get all products in this room
var products = (from p in db.ConversationRoomProducts
where p.ConversationRoom.Name.Equals(room.Name)
select new NegotiationProductModel()
{
ProductID = p.ProductID,
Name = p.Product.Name
}).ToArray();
// Send everything to the user
if (room.User1ID.Equals(Context.User.Identity.Name))
{
Clients.Caller.addChatRoom(new
{
Name = room.Name,
OtherUserID = room.User2DatabaseID,
OtherUserName = room.User2Name,
LastSeen = room.User2LastSeen,
Messages = messages,
Products = products
});
}
else
{
Clients.Caller.addChatRoom(new
{
Name = room.Name,
OtherUserID = room.User1DatabaseID,
OtherUserName = room.User1Name,
LastSeen = room.User1LastSeen,
Messages = messages,
Products = products
});
}
}
// Update last seen time
UpdateLastSeen();
return(base.OnConnected());
}
