private bool CheckExisted(int customerId)
{
using (var db = new ChatSignalrContext())
{
return(db.Customers.Any(n => n.Id == customerId));
}
}
private void SaveMessageToConversation(long customerId, long toCustomerId, string message)
{
using (var db = new ChatSignalrContext())
{
var ids = new long[] { customerId, toCustomerId };
// get old conversation between 2 customers
var conv = db.Conversations
.Include(i => i.Customers)
.FirstOrDefault(x => x.Customers.Count == 2 && x.Customers.All(n => ids.Contains(n.Id)));
var newMsg = new Message
{
Content = message,
DateCreated = DateTime.Now,
Customer = db.Customers.Find(customerId)
};
if (conv == null)
{
conv = new Conversation();
conv.Customers.Add(db.Customers.Find(customerId));
conv.Customers.Add(db.Customers.Find(toCustomerId));
conv.FirstMessage = newMsg;
db.Conversations.Add(conv);
db.SaveChanges();
}
conv.Messages.Add(newMsg);
conv.LastMessage = conv.Messages.Last();
db.Entry(conv).State = EntityState.Modified;
db.SaveChanges();
}
}
private Customer GetCustomerById(long customerId)
{
using (var db = new ChatSignalrContext())
{
return(db.Customers.FirstOrDefault(x => x.Id == customerId));
}
}
public void SendToSpecific(string message, long toUserId)
{
var currentUserId = GetCurrentContextUserId();
using (var db = new ChatSignalrContext())
{
// current user id from cookie phai luon co trong db, buoc nay da duoc kiem tra o ChatRoomController
if (currentUserId == 0 || !db.Customers.Any(n => n.Id == currentUserId))
{
Clients.Caller.showErrorMessage("Could not find current user (" + toUserId + ") or CurrentUserId is empty, please reload page again to get new UserId");
return;
}
var toUser = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Id == toUserId);
var activeConnIds = toUser.Connections
.Where(x => x.Connected)
.Select(s => s.ConnectionId)
.ToList();
if (toUser == null)
{
Clients.Caller.showErrorMessage("Could not find dest user (" + toUserId + "), but this user will be received this message when this user is online");
}
else
{
if (activeConnIds.Count == 0)
{
// thong bao cho nguoi gui // current caller connection only.
Clients.Caller.showErrorMessage("The user is no longer connected.");
}
else
{
// broadcast messae to caller
var caller = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Id == currentUserId);
var activeCallerConnIds = caller.Connections.Where(x => x.Connected)
.Select(s => s.ConnectionId)
.ToList();
foreach (var connId in activeCallerConnIds)
{
Clients.Client(connId).broadcastMessage(currentUserId, toUser.Name, message); // Clients.Caller
}
// Gửi tin nhắn cho tất các các kết nối hiện tại của user can gui // all user connections
foreach (var connId in activeConnIds)
{
Clients.Client(connId).broadcastMessage(currentUserId, toUser.Name, message);
}
}
// save message to conversation
SaveMessageToConversation(currentUserId, toUserId, message);
}
}
}
//public void SendToSpecific(string message, long toCustomerId)
//{
// // get current customer by connection
// var customer = GetCurrentCustomerByConnectionId(Context.ConnectionId);
// //string toConnectionId = dic[to];
// string toConnectionId = GetActivedConnectionIdByCustomerId(toCustomerId);
// // broadcast messae to caller
// Clients.Caller.broadcastMessage(customer.Id, customer.Name, message);
// // broadcast message to dest customer
// Clients.Client(toConnectionId).broadcastMessage(customer.Id, customer.Name, message);
// // save message to conversation
// SaveMessageToConversation(customer.Id, toCustomerId, message);
//}
//public void SendToSpecific(string message, long toCustomerId)
//{
// // get current customer by connection
// var customer = GetCurrentCustomerByConnectionId(Context.ConnectionId);
// // broadcast messae to caller
// Clients.Caller.broadcastMessage(customer.Id, customer.Name, message);
// // broadcast message to all dest customer connections // gui cho tat ca ket noi hien tai cua kh, tat ca cac tabs
// //string toConnectionId = GetActivedConnectionIdByCustomerId(toCustomerId);
// var toConnectionIds = GetActiveCustomerConnections(toCustomerId);
// foreach (var connId in toConnectionIds)
// {
// Clients.Client(connId).broadcastMessage(customer.Id, customer.Name, message);
// }
// // save message to conversation
// SaveMessageToConversation(customer.Id, toCustomerId, message);
//}
public void SendToSpecific(string message, long toUserId)
{
var curentUserId = GetCurrentUserId();
using (var db = new ChatSignalrContext())
{
var user = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Id == toUserId);
var activeConnIds = user.Connections.Where(x => x.Connected)
.Select(s => s.ConnectionId)
.ToList();
if (user == null)
{
Clients.Caller.showErrorMessage("Could not find that user (" + toUserId + ")");
}
else
{
if (activeConnIds.Count == 0)
{
// Thong bao nhung van gui va luu tin nhan vao db cho user nay doc
Clients.Caller.showErrorMessage("The user is no longer connected.");
}
else
{
// Gửi tin nhắn cho tất các các kết nối hiện tại của user // all user connections
Clients.Clients(activeConnIds).broadcastMessage(user.Id, user.Name, message);
}
}
}
// get current customer by connection
var customer = GetCurrentCustomerByConnectionId(Context.ConnectionId);
// broadcast messae to caller
Clients.Caller.broadcastMessage(customer.Id, customer.Name, message);
// broadcast message to all dest customer connections // gui cho tat ca ket noi hien tai cua kh, tat ca cac tabs
//string toConnectionId = GetActivedConnectionIdByCustomerId(toCustomerId);
var toConnectionIds = GetActiveCustomerConnections(toUserId);
foreach (var connId in toConnectionIds)
{
Clients.Client(connId).broadcastMessage(customer.Id, customer.Name, message);
}
// save message to conversation
SaveMessageToConversation(customer.Id, toUserId, message);
}
public override Task OnConnected()
{
var currentUserId = GetCurrentContextUserId();
using (var db = new ChatSignalrContext())
{
// #1 - Check Valid: current user id from cookie phai luon co trong db, buoc nay da duoc kiem tra o ChatRoomController
if (currentUserId == 0 || !db.Customers.Any(n => n.Id == currentUserId))
{
// Nếu ko tìm thấy user , nhưng ko chắc chắn có set đc cookie ở trong Hub này không
// nên tạm thời xử lý trường hợp này ở ChatRoomController.
Clients.Caller.showErrorMessage("Could not find current user (" + currentUserId + ") or CurrentUserId is empty, please reload page again to get new UserId");
return(base.OnConnected());
}
// #2 - Add new user connection
var user = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Id == currentUserId);
user.Connections.Add(new Connection
{
Connected = true,
UserAgent = Context.Request.Headers["User-Agent"],
ConnectionId = Context.ConnectionId
});
db.Entry(user).State = EntityState.Modified;
db.SaveChanges();
// #3 show list all online users to the caller
var onlineUsers = db.Customers
.Include(i => i.Connections)
.Where(x => x.Connections.Any(n => n.Connected));
foreach (var item in onlineUsers) // (KeyValuePair<long, Customer> entry in dictOnlineCustomers)
{
// load onlines in caller
Clients.Caller.online(item.Id, item.Name);
}
// #4 notify this user have entered to the others.
Clients.Others.enters(user.Id, user.Name);
}
return(base.OnConnected());
}
private void TestDataDemo()
{
using (var db = new ChatSignalrContext())
{
var allConn = db.Customers
.Include(i => i.Connections)
.SelectMany(s => s.Connections)
.Where(x => x.Connected)
.ToList();
foreach (var item in allConn)
{
item.Connected = false;
db.Entry(item).State = EntityState.Modified;
db.SaveChanges();
}
}
}
// Can test lai ve ham disconnect nay
//public override Task OnDisconnected(bool stopCalled)
//{
// //var name = dic.FirstOrDefault(x => x.Value == Context.ConnectionId.ToString());
// var item = dictOnlineCustomers.FirstOrDefault(x => x.Value.Connections.Any(n => n.ConnectionId == Context.ConnectionId));
// Customer s;
// if (!dictOnlineCustomers.TryRemove(item.Key, out s))
// throw new Exception("Customer " + item.Key + " remove failed!");
// // notify caller about the disconnection if current chat view is still existing.
// Clients.Caller.selfDisconnected(item.Key, item.Value.Name);
// // notify all about the disconnection
// return Clients.All.disconnected(item.Key, item.Value.Name);
// //base.OnDisconnected(stopCalled: true);
//}
/// <summary>
/// Kiem tra lai truong hop nao se goi
/// </summary>
/// <param name="stopCalled"></param>
/// <returns></returns>
public override Task OnDisconnected(bool stopCalled)
{
// #1 truon ghop refresh lai page
// #2 truon ghop close tab or browser
//var name = dic.FirstOrDefault(x => x.Value == Context.ConnectionId.ToString());
var dictItem = dictOnlineCustomers.FirstOrDefault(x => x.Value.Connections.Any(n => n.ConnectionId == Context.ConnectionId));
using (var db = new ChatSignalrContext())
{
// update connected status
var customer = db.Customers
.FirstOrDefault(x => x.Id == dictItem.Key);
var conn = customer.Connections.FirstOrDefault(x => x.ConnectionId == Context.ConnectionId);
conn.Connected = false;
db.Entry(conn).State = EntityState.Modified;
db.SaveChanges();
var connItem = dictItem.Value.Connections.FirstOrDefault(x => x.ConnectionId == Context.ConnectionId);
dictItem.Value.Connections.Remove(connItem);
}
// if this customer not has nay connections: notify to all about this disconnection
if (dictItem.Value.Connections.Count == 1)
{
Customer s;
if (!dictOnlineCustomers.TryRemove(dictItem.Key, out s))
{
throw new Exception("Customer " + dictItem.Key + " remove failed!");
}
// notify caller about the disconnection if current chat view is still existing.
Clients.Caller.selfDisconnected(dictItem.Key, dictItem.Value.Name);
// notify all about the disconnection
Clients.All.disconnected(dictItem.Key, dictItem.Value.Name);
}
return(base.OnDisconnected(stopCalled));
}
public override Task OnDisconnected(bool stopCalled)
{
using (var db = new ChatSignalrContext())
{
var user = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Connections.Any(n => n.ConnectionId == Context.ConnectionId));
var conn = user.Connections
.FirstOrDefault(x => x.ConnectionId == Context.ConnectionId);
conn.Connected = false;
db.Entry(conn).State = EntityState.Modified;
db.SaveChanges();
if (!user.Connections.Any(n => n.Connected))
{
// If all user connections is disconnected, notify to all about this disconnection of the user.
Clients.All.disconnected(user.Id, user.Name);
}
}
return(base.OnDisconnected(stopCalled));
}
//public void Notify() // public void Notify(string name, string id)
//{
// var customerId = GetCookieCustomerId();
// if (dictOnlineCustomers.ContainsKey(customerId))
// {
// Clients.Caller.differentName();
// }
// else
// {
// dictOnlineCustomers.TryAdd(customerId, id);
// foreach (KeyValuePair<String, String> entry in dic)
// {
// Clients.Caller.online(entry.Key);
// }
// Clients.Others.enters(name);
// }
//}
//public override Task OnConnected()
//{
// // #1 check valid customerid (ChatRoom/SignalrChat is already checked & prepared)
// Cookie s;
// int customerId = 0;
// if (!Context.Request.Cookies.TryGetValue(AppConstants.COOKIE_CHAT_CUSTOMERID, out s) // neu ko ton tai cookie
// || !int.TryParse(s.Value, out customerId) // neu ko parse dc customerId
// || !CheckExisted(customerId)) // neu customer ko ton tai trong db
// throw new Exception("Need to check valid cookie " + AppConstants.COOKIE_CHAT_CUSTOMERID + " in action ChatRoom/SignalRChat");
// using (var db = new ChatSignalrContext())
// {
// var customer = db.Customers
// .Include(i => i.Connections)
// .FirstOrDefault(x => x.Id == customerId);
// // #2 update old customer connections, set connected = false
// foreach (var itm in customer.Connections.Where(x => !x.Connected).ToList())
// {
// itm.Connected = false;
// db.Entry(itm).State = EntityState.Modified;
// db.SaveChanges();
// }
// // #3 update new customer connection to current customer
// customer.Connections.Add(new Connection
// {
// Connected = true,
// UserAgent = Context.Request.Headers["User-Agent"],
// ConnectionId = Context.ConnectionId
// });
// db.Entry(customer).State = EntityState.Modified;
// db.SaveChanges();
// // #4 update onlines list to dict
// if (dictOnlineCustomers.ContainsKey(customer.Id))
// {
// /// truong hợp mở tab mới trong khi tab cũ chưa ngắt kết nối
// /// tạm thời ko xét trường hợp này
// // throw new Exception("This customer - " + customer.Id + " is online");
// }
// else
// {
// //add model only
// var customerModel = new Customer
// {
// Connections = customer.Connections.Where(x => x.Connected).ToList(),
// Id = customer.Id,
// Name = customer.Name,
// };
// if (!dictOnlineCustomers.TryAdd(customerModel.Id, customerModel))
// throw new Exception("Add this customer " + customerModel.Id + " to dictOnlineCustomers is failed!");
// }
// // #5 notify (update) onlines list to all current customers
// foreach (KeyValuePair<long, Customer> entry in dictOnlineCustomers)
// {
// // load onlines in caller
// string lastMessage = "";
// Clients.Caller.online(entry.Key, entry.Value.Name, lastMessage);
// //Clients.All.online(entry.Key, entry.Value.Name);
// }
// // notify other this customer have enter.
// Clients.Others.enters(customer.Id, customer.Name);
// }
// return base.OnConnected();
//}
public override Task OnConnected()
{
System.Threading.Thread.Sleep(4000);
// #1 check valid customerid (ChatRoom/SignalrChat is already checked & prepared)
Cookie s;
int customerId = 0;
if (!Context.Request.Cookies.TryGetValue(AppConstants.COOKIE_CHAT_CUSTOMERID, out s) || // neu ko ton tai cookie
!int.TryParse(s.Value, out customerId) || // neu ko parse dc customerId
!CheckExisted(customerId)) // neu customer ko ton tai trong db
{
throw new Exception("Need to check valid cookie " + AppConstants.COOKIE_CHAT_CUSTOMERID + " in action ChatRoom/SignalRChat");
}
using (var db = new ChatSignalrContext())
{
var user = db.Customers
.Include(i => i.Connections)
.FirstOrDefault(x => x.Id == customerId);
// #3 add connection to current user
var newConn = new Connection
{
Connected = true,
UserAgent = Context.Request.Headers["User-Agent"],
ConnectionId = Context.ConnectionId
};
user.Connections.Add(newConn);
db.Entry(user).State = EntityState.Modified;
db.SaveChanges();
var newestActiveConns = user.Connections.Where(x => x.Connected).ToList();
// #4 update onlines list to dict
if (dictOnlineCustomers.ContainsKey(user.Id))
{
// update connection to dictionary
//var item = dictOnlineCustomers.FirstOrDefault(x => x.Value.Connections.Any(n => n.ConnectionId == Context.ConnectionId));
var item = dictOnlineCustomers.FirstOrDefault(x => x.Key == user.Id);
item.Value.Connections.Clear();
item.Value.Connections = newestActiveConns; // kie tra lai de dam bao se cap nhat vao dict
}
else
{
// add model only
var customerModel = new Customer
{
Connections = newestActiveConns,
Id = user.Id,
Name = user.Name,
};
if (!dictOnlineCustomers.TryAdd(customerModel.Id, customerModel))
{
throw new Exception("Add this customer " + customerModel.Id + " to dictOnlineCustomers is failed!");
}
}
// #5 notify (update) onlines list to all current customers
foreach (KeyValuePair <long, Customer> entry in dictOnlineCustomers)
{
// load onlines in caller
string lastMessage = "";
Clients.Caller.online(entry.Key, entry.Value.Name, lastMessage);
//Clients.All.online(entry.Key, entry.Value.Name);
}
// notify other this customer have enter.
Clients.Others.enters(user.Id, user.Name);
}
return(base.OnConnected());
}
