public List <string> LoadMessages(string username, string otherUserEmail)
{
using (var db = new ChatAppContext())
{
User myUser = db.Users.SingleOrDefault(user => user.Username == username);
User otherUser = db.Users.SingleOrDefault(user => user.Email == otherUserEmail);
List <string> MessagesBetweenTwoUsers = new List <string>();
if (myUser != null && otherUser != null)
{
List <Message> MessagesInDB = myUser.Messages.ToList();
foreach (Message msg in MessagesInDB)
{
if ((msg.FromUserId == myUser.Id && msg.ToUserId == otherUser.Id) ||
(msg.FromUserId == otherUser.Id && msg.ToUserId == myUser.Id))
{
if (msg.IsNew)
{
MessagesBetweenTwoUsers.Add(msg.MessageText);
msg.IsNew = false;
}
}
//need to update message status to Read
}
}
return(MessagesBetweenTwoUsers);
}
}
public Boolean SendMessage(string usernameFrom, string userToEmail, string messageText)
{
using (var db = new ChatAppContext())
{
User userFrom = db.Users.SingleOrDefault(user => user.Username == usernameFrom);
User userTo = db.Users.SingleOrDefault(user => user.Email == userToEmail);
if (userFrom == null || userTo == null)
{
return(false);
}
Message messageFrom = new Message();
messageFrom.FromUserId = userFrom.Id;
messageFrom.ToUserId = userTo.Id;
messageFrom.MessageText = messageText;
messageFrom.User = userFrom;
messageFrom.Date = DateTimeOffset.UtcNow;
messageFrom.IsNew = true;
userFrom.Messages.Add(messageFrom);
Message messageTo = new Message();
messageTo.FromUserId = userFrom.Id;
messageTo.ToUserId = userTo.Id;
messageTo.MessageText = messageText;
messageTo.User = userTo;
messageTo.Date = DateTimeOffset.UtcNow;
messageTo.IsNew = true;
userTo.Messages.Add(messageTo);
Contact contactTo = userFrom.Contacts.SingleOrDefault(contact => contact.Email == userTo.Email);
contactTo.LastMessageText = messageText;
db.SaveChanges();
return(true);
}
}
public bool CheckIfValidLogin(string username, string password)
{
using (var db = new ChatAppContext())
{
if (db.Users.Any(c => c.Username == username && c.Password == password))
{
return(true);
}
return(false);
}
}
//TODO: check if username or email already exsits
//if yes then return relative status code
public void RegisterUser(User user)
{
using (var db = new ChatAppContext())
{
if (db.Users.Any(u => u.Username == user.Username || u.Email == user.Email))
{
throw new UserNameOrEmailAlreadyExistsException();
}
db.Users.Add(user);
db.SaveChanges();
}
}
public Boolean AddContactToUser(string username, Contact contact)
{
using (var db = new ChatAppContext())
{
User myUser = db.Users.SingleOrDefault(user => user.Username == username);
//check if contact exists
User contactAsUser = db.Users.SingleOrDefault(user => user.Email == contact.Email);
if (myUser == null || contactAsUser == null)
{
return(false);
}
contact.User = myUser;
db.Contacts.Add(contact);
myUser.Contacts.Add(contact);
db.SaveChanges();
return(true);
}
}
public List <User> LoadContacts(string username, string filter = "")
{
using (var db = new ChatAppContext())
{
// User userInDB = db.Users.Find(username);
IQueryable <User> contacts;
if (!string.IsNullOrEmpty(filter))
{
contacts = from e in db.Users
where (e.Username != username) && (e.FirstName.Contains(filter))
select e;
return(contacts.ToList());
}
contacts = from e in db.Users
where e.Username != username
select e;
return(contacts.ToList());
}
}
