using CoreDatabase;
using CoreDatabase.Models.Department;
using DepartmentBusinessLogic.BindingModels;
using DepartmentBusinessLogic.Interfaces;
using DepartmentBusinessLogic.ViewModels;
using Microsoft.EntityFrameworkCore;
using ToolsModule.Enums;
using ToolsModule.Models;
using System;
using System.Linq;

namespace DepartmentDatabaseImplementation.Implementations
{
	/// <summary>
	/// Реализация интерфейса IEducationDirectionService
	/// </summary>
	public class EducationDirectionService :
		AbstractGenerticEntityService<EducationDirectionGetBindingModel, EducationDirectionSetBindingModel, EducationDirection, EducationDirectionListViewModel, EducationDirectionViewModel>,
		IEducationDirectionService
	{
		protected override OperationResultModel AdditionalCheckingWhenAdding(DbContext context, EducationDirectionSetBindingModel model) => OperationResultModel.Success(null);

		protected override OperationResultModel AdditionalCheckingWhenDeleting(DbContext context, EducationDirection entity, EducationDirectionGetBindingModel model)
		{
			if (context.Set<AcademicPlan>().Any(x => x.EducationDirectionId == model.Id && !x.IsDeleted))
			{
				return OperationResultModel.Error("Error:", "Есть учебные планы, относящиеся к этому направлению", ResultServiceStatusCode.ExsistItem);
			}
			if (context.Set<StudentGroup>().Any(x => x.EducationDirectionId == model.Id && !x.IsDeleted))
			{
				return OperationResultModel.Error("Error:", "Есть учебные группы, относящиеся к этому направлению", ResultServiceStatusCode.ExsistItem);
			}
			return OperationResultModel.Success(null);
		}

		protected override IQueryable<EducationDirection> AdditionalCheckingWhenReadingList(IQueryable<EducationDirection> query, EducationDirectionGetBindingModel model)
		{
			if (model.LecturerId.HasValue)
			{
				query = query.Where(x => x.LecturerId == model.LecturerId.Value);
			}
			return query;
		}

		protected override OperationResultModel AdditionalCheckingWhenUpdateing(DbContext context, EducationDirectionSetBindingModel model) => OperationResultModel.Success(null);

		protected override void AdditionalDeleting(DbContext context, EducationDirection entity, EducationDirectionGetBindingModel model) { }

		protected override EducationDirection GetUniqueEntity(EducationDirectionSetBindingModel model, DbContext context) => context.Set<EducationDirection>().FirstOrDefault(x => x.Title == model.Title && x.Profile == model.Profile && x.Id != model.Id);

		protected override IQueryable<EducationDirection> IncludingWhenReading(IQueryable<EducationDirection> query) => query.Include(x => x.Lecturer);

		protected override IQueryable<EducationDirection> OrderingWhenReading(IQueryable<EducationDirection> query) => query.OrderBy(x => x.Cipher);
	}
}