using Microsoft.EntityFrameworkCore;
using SchoolContracts.BindingModels;
using SchoolContracts.SearchModel;
using SchoolContracts.StoragesContracts;
using SchoolContracts.ViewModels;
using SchoolDatabaseImplement;
using SchoolDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SchoolDatabaseImplements.Implements
{
	public class CircleLessonStorage : ICircleLessonStorage
	{
		public CircleLessonViewModel? Delete(CircleLessonBindingModel model)
		{
			using var context = new SchoolDatabase();
			var circlelesson = context.CircleLessons.FirstOrDefault(rec => rec.Id == model.Id);
			if (circlelesson != null)
			{
				context.CircleLessons.Remove(circlelesson);
				context.SaveChanges();
				return circlelesson.GetViewModel;
			}
			return null;
		}

		public CircleLessonViewModel? GetElement(CircleLessonSearchModel model)
		{
			if (model == null)
			{
				return null;
			}
			using var context = new SchoolDatabase();
			if (model.Id.HasValue)
			{
				return context.CircleLessons.Include(x => x.Circle)
					.Include(x => x.Lesson)
					.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
			}
			return null;
		}

		public List<CircleLessonViewModel> GetFilteredList(CircleLessonSearchModel model)
		{
			using var context = new SchoolDatabase();
			return context.CircleLessons
				.Where(x => x.Id == model.Id)
				.Include(x => x.Circle)
				.Include(x => x.Lesson)
				.Select(x => x.GetViewModel)
				.ToList();
		}

		public List<CircleLessonViewModel> GetFullList()
		{
			using var context = new SchoolDatabase();
			return context.CircleLessons
				.Include(x => x.Circle)
				.Include(x => x.Lesson)
				.Select(x => x.GetViewModel)
				.ToList();
		}

		public CircleLessonViewModel? Insert(CircleLessonBindingModel model)
		{
			using var context = new SchoolDatabase();
			var newCircleLesson = CircleLesson.Create(context, model);
			if (newCircleLesson == null)
			{
				return null;
			}
			context.CircleLessons.Add(newCircleLesson);
			context.SaveChanges();
			return newCircleLesson.GetViewModel;
		}

		public CircleLessonViewModel? Update(CircleLessonBindingModel model)
		{
			using var context = new SchoolDatabase();
			var circlelesson = context.CircleLessons.FirstOrDefault(x => x.Id == model.Id);
			if (circlelesson == null)
			{
				return null;
			}
			circlelesson.Update(model);
			context.SaveChanges();
			return circlelesson.GetViewModel;
		}
	}
}