using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using PersonalFinance;
using System.ComponentModel;
using System.Windows;
using System.Data.Entity;
using PersonalFinance.Entity;

namespace PersonalFinanceWindow.ViewModel
{
    class UserViewModel : ViewModelBase
    {
        public static int loggedUserId;
        public static User loggedUser;
        UserService usrsrv;

        BindingList<User> users;
        public BindingList<User> Users { get { return users; } set { Set(ref users, value); } }

        User selected;
        public User Selected { get { return selected; } set { Set(ref selected, value); } }

        public BindingList<Sex> Sexs { get; set; }

        Sex selectedSex;
        public Sex SelectedSex { get { return selectedSex; } set { Set(ref selectedSex, value); } }

        public RelayCommand AddUser { get; set; }

        public RelayCommand DeleteUser { get; set; }

        public UserViewModel()
        {
            AddUser = new RelayCommand(AddUserAction);
            DeleteUser = new RelayCommand(DeleteUserAction);
            Sexs = new BindingList<Sex>();
            Sexs.Add(Sex.Male);
            Sexs.Add(Sex.Female);

            if ((bool)(DesignerProperties.IsInDesignModeProperty.GetMetadata(typeof(DependencyObject)).DefaultValue))
            {
                //dummy data
                Users = new BindingList<User>(new List<User> {
                    new User("123456") {UserId = 1, Name="Antonín", Lastname="Neumann", Login="tonda", Sex = Sex.Male}
                });
            }else {
                Database.SetInitializer<EntityContext>(new EntityContextInit());
                usrsrv = new UserService(ctx);
                Users = new BindingList<User>(usrsrv.GetAllUsers());
            }
            if (Users.Count > 0)
            {
                Selected = Users[0];
                SelectedSex = Selected.Sex;
            }
        }

        public void AddUserAction()
        {
            User u = new User("123456")
            {
                UserId = Users.Max(i => i.UserId) + 1,
                Login = "NEW_USER",
                Name = "NEW",
                Lastname = "USER"
            };
            Users.Add(u);
            usrsrv.AddUser(u);
            Selected = u;
        }

        bool AddUserCanExecute() { return true; }

        public void DeleteUserAction()
        {
            User u = Selected as User;
            Users.Remove(u);
            usrsrv.DeleteUser(u);
        }
    }
}