public override bool AddContact(string login, string contact_login, string contact_nickname)
{
using (DataEntities ctx = new DataEntities())
{
user usr = ctx.users.FirstOrDefault(u => u.login == login);
user usr_ct = ctx.users.FirstOrDefault(u => u.login == contact_login);
if (usr == null || usr_ct == null)
return false;
if (ctx.contacts.FirstOrDefault(u => u.user_id == usr.user_id && u.contact_id == usr_ct.user_id) != null)
return false;
contact ct = new contact()
{
user_id = usr.user_id,
contact_id = usr_ct.user_id,
name = contact_nickname
};
ctx.contacts.Add(ct);
ctx.SaveChanges();
return true;
}
}
public override void AddMessage(DateTime time, List<int> users, int author, string message)
{
using (DataEntities ctx = new DataEntities())
{
if (ctx.users.FirstOrDefault(u => u.user_id == author) == null)
{
throw new UserNotExistingException();
}
foreach (int id in users)
{
if (ctx.users.FirstOrDefault(u => u.user_id == id) == null)
{
throw new UserNotExistingException();
}
}
message msg = new message
{
author_id = author,
time = time,
message1 = message
};
foreach (int id in users)
{
msg.users.Add(ctx.users.FirstOrDefault(u => u.user_id == id));
}
ctx.messages.Add(msg);
ctx.SaveChanges();
}
}
public override int CreateUser(string login, string password)
{
using (DataEntities ctx = new DataEntities())
{
if (ctx.users.FirstOrDefault(u => u.login == login) == null)
{
user new_user = new user()
{
login = login,
password = password,
status = 0,
description = "",
last_status_update = DateTime.UtcNow,
last_messages_download = DateTime.UtcNow
};
ctx.users.Add(new_user);
ctx.SaveChanges();
return ctx.users.FirstOrDefault(u => u.login == login).user_id;
}
throw new UserAlreadyExistsException();
}
}
public override List<Message> GetArchive(DateTime from, DateTime to, List<int> ids)
{
using (DataEntities ctx = new DataEntities())
{
List<message> msgs = ctx.messages.Where(m => m.users.Select(u => u.user_id).Intersect(ids).Count() == ids.Count()).Where(m2 => m2.time >= from && m2.time <= to).ToList();
return Convert(msgs);
}
}
public override bool SetStatus(string login, EUserStatus status, string description)
{
using (DataEntities ctx = new DataEntities())
{
user usr = ctx.users.FirstOrDefault(u => u.login == login);
if (usr == null)
return false;
usr.status = (int)status;
usr.description = description;
usr.last_status_update = DateTime.UtcNow;
ctx.SaveChanges();
return true;
}
}
public override void SetLastMessageUpdate(int user_id, DateTime time)
{
using (DataEntities ctx = new DataEntities())
{
user usr = ctx.users.FirstOrDefault(u => u.user_id == user_id);
if (usr == null)
{
throw new UserNotExistingException();
}
usr.last_messages_download = time;
ctx.SaveChanges();
}
}
public override List<string> GetUsersWithLoginInContactList(string login)
{
using (DataEntities ctx = new DataEntities())
{
return ctx.users.Where(u => u.contacts.FirstOrDefault(c => c.contact_.login == login) != null).Select(s => s.login).ToList();
}
}
public override User GetUser(string login)
{
using (DataEntities ctx = new DataEntities())
{
return Convert(ctx.users.FirstOrDefault(u => u.login == login));
}
}
public override User GetUser(int user_id)
{
using (DataEntities ctx = new DataEntities())
{
return Convert(ctx.users.FirstOrDefault(u => u.user_id == user_id));
}
}
public override List<Message> GetMessagesSince(int user, DateTime time)
{
using (DataEntities ctx = new DataEntities())
{
List<Message> msgs = new List<Message>();
foreach (message msg in ctx.messages.Where(m => m.author_id != user && m.users.FirstOrDefault(u => u.user_id == user) != null && m.time >= time).ToList())
{
msgs.Add(Convert(msg));
}
return msgs;
}
}
public override DateTime GetLastMessageUpdate(int user_id)
{
using (DataEntities ctx = new DataEntities())
{
user usr = ctx.users.FirstOrDefault(u => u.user_id == user_id);
if (usr == null)
{
throw new UserNotExistingException();
}
return usr.last_messages_download;
}
}
