using SchoolScheduleContracts.BindingModels;
using SchoolScheduleContracts.ViewModels;
using SchoolScheduleDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SchoolScheduleDataBaseImplement.Models
{
	public class Lesson : ILessonModel
	{
		public int Id { get; private set; }
		[Required]
		public DateOnly Date { get; private set; }
		[Required]
		public string? Homework { get; private set; } = null;
		[Required]
		public int SchedulePlaceId { get; private set; }
		[Required]
		public int TeacherId { get; private set; }
		[Required]
		public int SubjectId { get; private set; }
		[Required]
		public int GradeId { get; private set; }
		[ForeignKey("LessonId")]
		public virtual List<LessonStudent> Students { get; set; } = new();
		public virtual SchedulePlace SchedulePlace { get; set; } = new();
		public virtual Teacher Teacher { get; set; } = new();
		public virtual Subject Subject { get; set; } = new();
		public virtual Grade Grade { get; set; } = new();

		public static Lesson Create(SchoolScheduleDataBase context, LessonBindingModel model)
		{
			return new Lesson
			{
				Id = model.Id,
				Date = model.Date,
				Homework = model.Homework,
				SchedulePlaceId = model.SchedulePlaceId,
				SchedulePlace = context.SchedulePlaces.First(y => y.Id == model.SchedulePlaceId),
				TeacherId = model.TeacherId,
				SubjectId = model.SubjectId,
				GradeId = model.GradeId,
				Teacher = context.Teachers.First(x => x.Id == model.TeacherId),
				Subject = context.Subjects.First(x => x.Id == model.SubjectId),
				Grade = context.Grades.First(x => x.Id == model.GradeId)
			};
		}
		public void Update(SchoolScheduleDataBase context, LessonBindingModel model)
		{
			if (model == null)
			{
				return;
			}
			Date = model.Date;
			Homework = model.Homework;
			SchedulePlaceId = model.SchedulePlaceId;
			SchedulePlace = context.SchedulePlaces.First(y => y.Id == model.SchedulePlaceId);
			TeacherId = model.TeacherId;
			SubjectId = model.SubjectId;
			GradeId = model.GradeId;
			Teacher = context.Teachers.First(x => x.Id == model.TeacherId);
			Subject = context.Subjects.First(x => x.Id == model.SubjectId);
			Grade = context.Grades.First(x => x.Id == model.GradeId);
		}
		public LessonViewModel GetViewModel => new()
		{
			Id = Id,
			Date = Date,
			Homework = Homework,
			SchedulePlaceId = SchedulePlaceId,
			GradeId = GradeId,
			TeacherId = TeacherId,
			SubjectId = SubjectId,
 			SchedulePlaceTime = SchedulePlace.Time,
			TeacherFullName = Teacher.FullName,
			SubjectName = Subject.SubjectName,
			GradeName = Grade.Year.ToString() + Grade.Letter.ToString()

		};

	}
}