public ChatMessage()
{
Author = new ChatRoomUser();
Message = "";
MessageDate = DateTime.Now;
Room = new ChatRoom();
}
public MessageViewModel(ChatMessage message, ChatRoom room)
{
Id = message.Id;
Content = message.Content;
User = new UserViewModel(message.User);
When = message.When;
Room = room.Name;
}
public UserViewModel(ChatUser user, ChatRoom room)
{
Name = user.Name;
Hash = user.Hash;
Id = user.Id;
Active = user.Active;
Room = room == null ? null : room.Name;
}
public static ChatRoomModel Convert(ChatRoom chatRoom)
{
ChatRoomModel model = new ChatRoomModel
{
ChatRoomId = chatRoom.Id,
Name = chatRoom.Name,
PostCount = chatRoom.Posts.Count,
UserCount = chatRoom.Users.Count
};
return model;
}
public static ChatRoomFullModel Convert(ChatRoom chatRoom)
{
ChatRoomFullModel model = new ChatRoomFullModel
{
ChatRoomId = chatRoom.Id,
Name = chatRoom.Name,
PostCount = chatRoom.Posts.Count,
UserCount = chatRoom.Users.Count,
Posts = (
from post in chatRoom.Posts
select PostModel.Convert(post)).ToList(),
Users = (
from user in chatRoom.Users
select UserModel.Convert(user)).ToList()
};
return model;
}
public ActionResult CreateRoom(string nm)
{
ChatRoom cr = new ChatRoom();
cr.name = nm;
Db.chatRooms.Add(cr);
if (Db.currentRoom == null)
{
Db.currentRoom = Db.chatRooms.FirstOrDefault();
if (Db.currentRoom != null)
{
Db.currentRoom.isCurrent = true;
}
}
Db.SaveChanges();
return RedirectToAction("ChatIndex");
}
static void Main()
{
//Create and initialize the database
Database.SetInitializer(new MigrateDatabaseToLatestVersion
<ChatContext, Chat.Data.Migrations.Configuration>());
var context = new ChatContext();
using (context)
{
var user = new User { Username = "******", Password = "******", Picture = "....." };
context.Users.Add(user);
var chatRoom = new ChatRoom { Name = "chatroom", Users = new User[] { user } };
context.ChatRooms.Add(chatRoom);
var post = new Post { Date = DateTime.Now, UserId = user.Id, ChatRoomId = chatRoom.Id, Content = "ok" };
context.Posts.Add(post);
context.SaveChanges();
}
}
private void HandleLeave(ChatRoom room, ChatUser user)
{
room.Users.Remove(user);
user.Rooms.Remove(room);
var userViewModel = new UserViewModel(user);
Clients[room.Name].leave(userViewModel).Wait();
RemoveFromGroup(room.Name).Wait();
}
private void HandleJoin(string room, string name, string[] parts)
{
if (parts.Length < 2) {
throw new InvalidOperationException("Join which room?");
}
string newRoom = parts[1];
ChatRoom chatRoom;
// Create the room if it doesn't exist
if (!_rooms.TryGetValue(newRoom, out chatRoom)) {
chatRoom = new ChatRoom();
_rooms.Add(newRoom, chatRoom);
}
// Only support one room at a time for now (until we support tabs)
// Remove the old room
if (!String.IsNullOrEmpty(room)) {
_userRooms[name].Remove(room);
_rooms[room].Users.Remove(name);
RemoveFromGroup(room);
Clients[room].leave(_users[name]).Wait();
}
_userRooms[name].Add(newRoom);
if (!chatRoom.Users.Add(name)) {
throw new InvalidOperationException("You're already in that room!");
}
// Tell the people in this room that you're joining
Clients[newRoom].addUser(_users[name]);
// Set the room on the caller
Caller.room = newRoom;
AddToGroup(newRoom).Wait();
Caller.joinRoom(newRoom);
}
public ICollection<Post> GetPosts(ChatRoom chatRoom)
{
var entity = this.chatRoomRepository.Get(chatRoom.Id).Posts;
return entity;
}
public ICollection<User> GetUsers(ChatRoom chatRoom)
{
var entity = this.chatRoomRepository.Get(chatRoom.Id).Users;
return entity;
}
private ChatRoom AddRoom(string name)
{
if (name.Equals("Lobby", StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException("Lobby is not a valid chat room.");
}
if (!IsValidRoomName(name))
{
throw new InvalidOperationException(String.Format("'{0}' is not a valid room name.", name));
}
var chatRoom = new ChatRoom { Name = name };
_db.Rooms.Add(chatRoom);
return chatRoom;
}
public HttpResponseMessage Post(ChatRoom model)
{
if (model.Name == null)
{
var errResponse = this.Request.CreateErrorResponse(
HttpStatusCode.BadRequest, "ChatRoom Name could not be null");
throw new HttpResponseException(errResponse);
}
var entity = this.chatRoomRepository.Add(model);
var response =
Request.CreateResponse(HttpStatusCode.Created, entity);
response.Headers.Location = new Uri(Url.Link("DefaultApi",
new { id = entity.Id }));
return response;
}
private void HandleNudge(ChatRoom room, ChatUser user, string[] parts)
{
var betweenNudges = TimeSpan.FromMinutes(1);
if (room.LastNudged == null || room.LastNudged < DateTime.Now.Subtract(betweenNudges)) {
room.LastNudged = DateTime.Now;
Clients[room.Name].nudge(user.Name);
}
else {
throw new InvalidOperationException(String.Format("Room can only be nudged once every {0} seconds", betweenNudges.TotalSeconds));
}
}
private void ProcessUrls(IEnumerable<string> links, ChatRoom chatRoom, ChatMessage chatMessage)
{
// REVIEW: is this safe to do? We're holding on to this instance
// when this should really be a fire and forget.
var contentTasks = links.Select(ExtractContent).ToArray();
Task.Factory.ContinueWhenAll(contentTasks, tasks => {
foreach (var task in tasks) {
if (task.IsFaulted) {
Trace.TraceError(task.Exception.GetBaseException().Message);
continue;
}
if (String.IsNullOrEmpty(task.Result)) {
continue;
}
// Try to get content from each url we're resolved in the query
string extractedContent = "<p>" + task.Result + "</p>";
// If we did get something, update the message and notify all clients
chatMessage.Content += extractedContent;
Clients[chatRoom.Name].addMessageContent(chatMessage.Id, extractedContent);
}
});
}
private void HandleRejoin(ChatRoom room, ChatUser user)
{
JoinRoom(user, room);
}
private void HandleMe(ChatRoom room, ChatUser user, string[] parts)
{
if (parts.Length < 2) {
throw new InvalidOperationException("You what?");
}
var content = String.Join(" ", parts.Skip(1));
Clients[room.Name].sendMeMessage(user.Name, content);
}
private void HandleJoin(string oldRoomName, ChatUser user, string[] parts)
{
if (parts.Length < 2) {
throw new InvalidOperationException("Join which room?");
}
var userViewModel = new UserViewModel(user);
// Only support joining one room at a time for now (until we support tabs)
ChatRoom oldRoom = _db.Rooms.FirstOrDefault(r => r.Name.Equals(oldRoomName, StringComparison.OrdinalIgnoreCase));
if (oldRoom != null) {
HandleLeave(oldRoom, user);
}
// Create the room if it doesn't exist
string newRoomName = parts[1];
ChatRoom newRoom = _db.Rooms.FirstOrDefault(r => r.Name.Equals(newRoomName, StringComparison.OrdinalIgnoreCase));
if (newRoom == null) {
newRoom = new ChatRoom {
Name = newRoomName
};
_db.Rooms.Add(newRoom);
}
if (user.Rooms.Contains(newRoom)) {
throw new InvalidOperationException("You're already in that room!");
}
// Add this room to the user's list of rooms
user.Rooms.Add(newRoom);
// Add this user to the list of room's users
newRoom.Users.Add(user);
// Tell the people in this room that you're joining
Clients[newRoom.Name].addUser(userViewModel).Wait();
// Set the room on the caller
Caller.room = newRoom.Name;
// Add the caller to the group so they receive messages
AddToGroup(newRoomName).Wait();
Caller.joinRoom(newRoomName);
}
private void JoinRoom(ChatUser user, ChatRoom newRoom)
{
var userViewModel = new UserViewModel(user);
// Add this room to the user's list of rooms
user.Rooms.Add(newRoom);
// Add this user to the list of room's users
newRoom.Users.Add(user);
// Tell the people in this room that you're joining
Clients[newRoom.Name].addUser(userViewModel).Wait();
// Set the room on the caller
Caller.room = newRoom.Name;
// Add the caller to the group so they receive messages
AddToGroup(newRoom.Name).Wait();
Caller.joinRoom(newRoom.Name);
}
private bool IsUserInRoom(ChatRoom room, ChatUser user)
{
return room.Users.Any(x => x.Name.Equals(user.Name, StringComparison.OrdinalIgnoreCase)) || user.Rooms.Any(x => x.Name.Equals(room.Name, StringComparison.OrdinalIgnoreCase));
}
private void HandleRejoin(ChatRoom room, ChatUser user)
{
// check if the user is in a room
if (IsUserInRoom(room, user))
{
// Only support joining one room at a time for now (until we support tabs)
HandleLeave(room, user);
}
JoinRoom(user, room);
}
private ChatRoom AddRoom(string name)
{
var chatRoom = new ChatRoom { Name = name };
_db.Rooms.Add(chatRoom);
return chatRoom;
}
