public static string register(string username, string pwd)
{
string userName = username;
if (!Regex.IsMatch(userName, @"^[a-zA-Z]+$") || userName.Length < 4 || !UniquieUsername(userName))
{
return("Invalid format or Nickname already exsists\n username:"******"Password mast be min 8 char:");
}
MD5 md5Hash = MD5.Create();
string hashedpwd = GetMd5Hash(md5Hash, newpwd);
using (chatEntities context = new chatEntities())
{
user users = new user
{
username = userName,
pwd = hashedpwd
};
context.users.Add(users);
context.SaveChanges();
return("U registered successfully");
}
}
public static List <group> listgroup()
{
chatEntities context = new chatEntities();
var chatgroupstoreturn = context.groups.ToList();
return(chatgroupstoreturn);
}
public static void UpdateGroup()
{
Console.Clear();
chatEntities context = new chatEntities();
var groups = context.groups.ToList();
foreach (var element in groups)
{
Console.WriteLine($"[{element.group_id}] {element.title}");
}
Console.WriteLine("tell number which u want to update");
string groups_id = Console.ReadLine();
int gr_id = Int32.Parse(groups_id);
group group_to_delete = context.groups.FirstOrDefault(r => r.group_id.Equals(gr_id));
if (group_to_delete != null)
{
Console.WriteLine("Group Title");
string group_title = Console.ReadLine();
while (!Regex.IsMatch(group_title, @"^[a-zA-Z]+$") || group_title.Length < 4 || !UniquieGroup(group_title))
{
Console.WriteLine("Invalid format or title already exsists\n title:");
group_title = Console.ReadLine();
}
group_to_delete.title = group_title;
context.SaveChanges();
}
Admin();
}
public static void RemoveUserAdmin(String Name)
{
chatEntities context = new chatEntities();
user privilegie = context.users.FirstOrDefault(r => r.username.Equals(Name));
privilegie.privilegie = 0;
context.SaveChanges();
}
public static List <Chats> listchats()
{
chatEntities context = new chatEntities();
var chatgroupstoreturn = context.groups.Select(x => new Chats
{
title = x.title
}).ToList();
//mara ar moaqvs axla :/ ra ar moaqvs
return(chatgroupstoreturn);
}
public static List <UserDTO> listAdmin()
{
chatEntities context = new chatEntities();
var items = context.users.Where(r => r.privilegie == 1 && r.user1 != Program.user_id).Select(x => new UserDTO
{
username = x.username,
}).ToList();
return(items);
}
public static List <UserDTO> listusers()
{
chatEntities context = new chatEntities();
var items = context.users.Where(r => r.privilegie == 0).Select(x => new UserDTO
{
username = x.username,
}).ToList();
return(items);
}
public static void SendMessage(string message_content)
{
chatEntities context = new chatEntities();
message send_message = new message
{
group_id = Program.chat_id,
sender_id = Program.user_id,
message1 = message_content
};
context.messages.Add(send_message);
context.SaveChanges();
}
public static int DeleteGroup(int groups_id)
{
chatEntities context = new chatEntities();
int gr_id = groups_id;
group group_to_delete = context.groups.FirstOrDefault(r => r.group_id.Equals(gr_id));
if (group_to_delete != null)
{
context.groups.Remove(group_to_delete);
context.SaveChanges();
}
return(1);
}
public static bool UniquieGroup(string title)
{
bool to_ret = true;
using (chatEntities context = new chatEntities())
{
group groups_title = context.groups.FirstOrDefault(r => r.title.Equals(title));
if (groups_title == null)
{
to_ret = true;
}
else
{
to_ret = false;
}
}
return(to_ret);
}
public static bool UniquieUsername(string nickname)
{
bool to_ret = true;
using (chatEntities context = new chatEntities())
{
user users = context.users.FirstOrDefault(r => r.username.Equals(nickname));
if (users == null)
{
to_ret = true;
}
else
{
to_ret = false;
}
}
return(to_ret);
}
public static string CreateGroup(String GroupName)
{
string group_title = GroupName;
if (!Regex.IsMatch(group_title, @"^[a-zA-Z]+$") || group_title.Length < 4 || !UniquieGroup(group_title))
{
return("no match format");
}
using (chatEntities context = new chatEntities())
{
group groups = new group
{
title = group_title,
};
context.groups.Add(groups);
context.SaveChanges();
}
return("added succesfully");
}
public static List <MessageModel> Messages(String chatname)
{
chatEntities context = new chatEntities();
int group_id = Int32.Parse(context.groups.FirstOrDefault(r => r.title.Equals(chatname)).group_id.ToString());
Program.chat_id = group_id;
var result = context.users.Join(
context.messages.Where(x => x.group_id == chat_id && x.m_id > Program.last_message_id),
x => x.user1,
y => y.sender_id,
(x, y) => new MessageModel {
message = y.message1,
username = x.username,
messageId = y.m_id
}
).ToList();
return(result);
}
public static int Login(String Username, String Pwd)
{
string userName = Username;
string newpwd = Pwd;
MD5 md5Hash = MD5.Create();
string hashedpwd = GetMd5Hash(md5Hash, newpwd);
using (chatEntities context = new chatEntities())
{
user users = context.users.FirstOrDefault(r => r.username.Equals(userName) && r.pwd.Equals(hashedpwd));
if (users == null)
{
return(0);
}
else
{
Program.is_logged = true;
Program.user_id = users.user1;
Program.priv = users.privilegie;
return(1);
}
}
}
