StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentView/FormStudent.cs

using Microsoft.Extensions.Logging;
using StudentEnrollmentContracts.BindingModels;
using StudentEnrollmentContracts.BusinessLogicContracts;
using StudentEnrollmentContracts.SearchModels;
using StudentEnrollmentDataModels.Models;

namespace StudentEnrollmentView
{
	public partial class FormStudent : Form
	{
		private readonly ILogger _logger;
		private readonly IStudentLogic _logic;
		private readonly IExamPointsLogic _examPointsLogic;
		private int? _id;
		private Dictionary<int, ICourseModel> _studentCourses;
		private IExamPointsModel _examPoints;
		public int Id { set { _id = value; } }
		public FormStudent(ILogger<FormStudent> logger, IStudentLogic logic, IExamPointsLogic examPointsLogic)
		{
			InitializeComponent();
			dataGridView.AllowUserToAddRows = false;
			_logger = logger;
			_logic = logic;
			_examPointsLogic = examPointsLogic;
			_studentCourses = new Dictionary<int, ICourseModel>();
		}

		private void FormStudent_Load(object sender, EventArgs e)
		{
			if (_id.HasValue)
			{
				_logger.LogInformation("Загрузка студента");
				try
				{
					var view = _logic.ReadElement(new StudentSearchModel
					{
						student_id = _id.Value
					});
					if (view != null)
					{
						textBoxLastName.Text = view.LastName;
						textBoxFirstName.Text = view.FirstName;
						textBoxMiddleName.Text = view.MiddleName;
						textBoxEmail.Text = view.Email;
						textBoxTIN.Text = view.TIN.ToString();
						_studentCourses = view.StudentCourse ?? new Dictionary<int, ICourseModel>();
						var test = _examPointsLogic.ReadElement(new ExamPointsSearchModel
						{
							exampoints_id = view.ExamPointsId,
						});
						_examPoints = test;
						LoadData();
					}
				}
				catch (Exception ex)
				{
					_logger.LogError(ex, "Ошибка загрузки студента");
					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
			}
		}
		private void LoadData()
		{
			_logger.LogInformation("Загрузка направлений студента");
			try
			{
				if (_studentCourses != null)
				{
					dataGridView.Rows.Clear();
					foreach (var pc in _studentCourses)
					{
						dataGridView.Rows.Add(new object[] { pc.Key, pc.Value.name });
					}
				}
			}
			catch (Exception ex)
			{
				_logger.LogError(ex, "Ошибка загрузки направлений студента");
				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
		}
		private void buttonAdd_Click(object sender, EventArgs e)
		{
			var service = Program.ServiceProvider?.GetService(typeof(FormStudentCourse));
			if (service is FormStudentCourse form)
			{
				if (form.ShowDialog() == DialogResult.OK)
				{
					if (form.CourseModel == null)
					{
						return;
					}
					_logger.LogInformation("Добавление нового направления:{ CourseName}", form.CourseModel.name);
					if (_studentCourses.ContainsKey(form.Id))
					{
						_studentCourses[form.Id] = form.CourseModel;
					}
					else
					{
						_studentCourses.Add(form.Id, form.CourseModel);
					}
					LoadData();
				}
			}
		}

		private void buttonUpd_Click(object sender, EventArgs e)
		{
			if (dataGridView.SelectedRows.Count == 1)
			{
				var service = Program.ServiceProvider?.GetService(typeof(FormStudentCourse));
				if (service is FormStudentCourse form)
				{
					int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
					form.Id = id;
					if (form.ShowDialog() == DialogResult.OK)
					{
						if (form.CourseModel == null)
						{
							return;
						}
						_logger.LogInformation("Изменение направления:{ CourseName }", form.CourseModel.name);
						_studentCourses[form.Id] = form.CourseModel;
						LoadData();
					}
				}
			}
		}

		private void buttonDel_Click(object sender, EventArgs e)
		{
			if (dataGridView.SelectedRows.Count == 1)
			{
				if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
				{
					try
					{
						_logger.LogInformation("Удаление направления:{ CourseName}", dataGridView.SelectedRows[0].Cells[1].Value);
						_studentCourses?.Remove(Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value));
					}
					catch (Exception ex)
					{
						MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
					}
					LoadData();
				}
			}
		}

		private void buttonRef_Click(object sender, EventArgs e)
		{
			LoadData();
		}

		private void buttonSave_Click(object sender, EventArgs e)
		{
			if (string.IsNullOrEmpty(textBoxFirstName.Text))
			{
				MessageBox.Show("Заполните имя", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (string.IsNullOrEmpty(textBoxLastName.Text))
			{
				MessageBox.Show("Заполните фамилию", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (string.IsNullOrEmpty(textBoxEmail.Text))
			{
				MessageBox.Show("Заполните почту", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (string.IsNullOrEmpty(textBoxTIN.Text))
			{
				MessageBox.Show("Заполните ИНН", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (_studentCourses.Count == 0 || _studentCourses == null)
			{
				MessageBox.Show("Заполните направления", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (_examPoints == null 
				|| (_examPoints.FirstExamPoints == 0
				&& _examPoints.SecondExamPoints == 0
				&& _examPoints.ThirdExamPoints == 0))
			{
				MessageBox.Show("Заполните баллы студента", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			_logger.LogInformation("Сохранение студента");
			try
			{
				var model = new StudentBindingModel
				{
					Id = _id ?? 0,
					FirstName = textBoxFirstName.Text,
					LastName = textBoxLastName.Text,
					MiddleName = !string.IsNullOrEmpty(textBoxMiddleName.Text) ? textBoxMiddleName.Text : string.Empty,
					Email = textBoxEmail.Text,
					TIN = Convert.ToInt64(textBoxTIN.Text),
					StudentCourse = _studentCourses,
					ExamPointsId = _examPoints.Id,
				};
				var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
				if (!operationResult)
				{
					throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
				}
				MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
				DialogResult = DialogResult.OK;
				Close();
			}
			catch (Exception ex)
			{
				_logger.LogError(ex, "Ошибка сохранения студента");
				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
		}

		private void buttonCancel_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		private void buttonAddPoints_Click(object sender, EventArgs e)
		{
			var service = Program.ServiceProvider?.GetService(typeof(FormExamPoints));
			if (service is FormExamPoints form)
			{
				form.Id = _id ?? 0;
				if (form.ShowDialog() == DialogResult.OK)
				{
					_examPoints = form.ExamPoints;
				}
			}
		}
	}
}