using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Amotz
{
    public class Users
    {
        private int id;
        private string username;
        private string password;
        private bool isAdmin;
        private int approval;
        private Groups group;
        private DateTime regDate;

        public int Id { get => id; set => id = value; }
        public string Username { get => username; set => username = value; }
        public string Password { get => password; set => password = value; }
        public bool IsAdmin { get => isAdmin; set => isAdmin = value; }
        public int Approval { get => approval; set => approval = value; }
        public Groups Group { get => group; set => group = value; }
        public DateTime RegDate { get => regDate; set => regDate = value; }

        public static List<Users> AllUsers = new List<Users>();

        public override string ToString()
        {
            return Username;
        }

        public static void BackDoor() // Created the first username.
        {
            Users admin = new Users();
            admin.Username = "ornakash";
            admin.Password = "qerqer";
            admin.IsAdmin = true;
            admin.Approval = 1;
            admin.regDate = DateTime.Now;
            ApplicationForm.SetUser(admin);
            AllUsers.Add(admin);
        }

        public static string GetUserById(int id)
        {
            foreach (Users users in AllUsers)
            {
                if(users.Id == id)
                {
                    return users.Username;
                }
            }
            return "Not found";
        }
        public static int CheckLogin(string username, string password)
        {
            foreach (Users users in AllUsers)
            {
               if (users.Username == username && users.Password == password)
                {
                    if (users.Approval == 0) return -1;
                    if (users.Approval == -1) return -2;
                    ApplicationForm.SetUser(users);
                    return 1;
                }
            }
            return 0;
        }
        public static int RegisterUser(Users newUser)
        {
            foreach(Users users in AllUsers)
            {
                if(users.Username == newUser.Username) { return 0; } // Username is taken.
            }
            newUser.Id = Convert.ToInt32(AllUsers.Count()); // Last ID.
            newUser.Approval = 0;
            newUser.RegDate = DateTime.Now;
            AllUsers.Add(newUser);
            return Convert.ToInt32(AllUsers.Count());
        }

    }
}