using bububu.Models;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace bububu.ViewModels
{
    public class MainWindowViewModel : INotifyPropertyChanged
    {
        //Schedule[] schedules;
        Schedule selectedTeacher;
        public ObservableCollection<Schedule> Schedules { get; private set; }
        public Schedule SelectedTeacher
        {
            get { return selectedTeacher; }
            set { selectedTeacher = value; OnPropertyChanged("SelectedTeacher"); }
         }

        public ICommand AddCommand { get; private set; }
        public ICommand DeleteCommand { get; private set;  }
        public MainWindowViewModel()
        {
            Schedules = new ObservableCollection<Schedule>(Schedule.GetSchedules());
            AddCommand = new DelegateCommand(AddSchedule);
            DeleteCommand = new DelegateCommand(DeleteSchedule, CanDeleteSchedule);
        }

        private void DeleteSchedule(object obj)
        {
            Schedules.Remove((Schedule)obj);
        }

        private bool CanDeleteSchedule(object arg)
        {
            return (arg as Schedule) != null;
        }

        void AddSchedule(object obj)
        {
            Schedules.Add(new Schedule { Obj = "Предмет", Teacher = "Преподаватель", Comment = "TRAP LUV" });
        }

        public event PropertyChangedEventHandler PropertyChanged;
        void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}