using StudentProgressRecord.Entity;
using StudentProgressRecord.Repositories;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace StudentProgressRecord
{
    public partial class FormFaculty : Form
    {

        private readonly IFacultyRepository _facultyRepository;
        private int? _facultyId;
        public int Id
        {
            set
            {
                try
                {
                    var faculty =
                    _facultyRepository.ReadFacultyById(value);
                    if (faculty == null)
                    {
                        throw new InvalidDataException(nameof(faculty));
                    }
                    textBoxFaculty.Text = faculty.FacultyName;
                    _facultyId = value;
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Ошибка при полученииданных", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
        }
        public FormFaculty(IFacultyRepository facultyRepository)
        {
            InitializeComponent();
            _facultyRepository = facultyRepository ?? throw new ArgumentNullException(nameof(facultyRepository));
        }
        private void ButtonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(textBoxFaculty.Text))
                {
                    throw new Exception("Название факультета не может быть пустым");
                }
                if (_facultyId.HasValue)
                {
                    _facultyRepository.UpdateFaculty(CreateFaculty(_facultyId.Value));
                }
                else
                {
                    _facultyRepository.CreateFaculty(CreateFaculty(0));
                }
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении",
                MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private void ButtonCancel_Click(object sender, EventArgs e) => Close();
        private Faculty CreateFaculty(int id) => Faculty.CreateEntity(id, textBoxFaculty.Text);
    }
}