using CoreDatabase;
using CoreDatabase.Models.Department;
using DepartmentContract.BindingModels;
using DepartmentContract.Services.IGenericEntityService;
using DepartmentContract.ViewModels;
using Microsoft.EntityFrameworkCore;
using System.Linq;
using ToolsModule.Models;

namespace DepartmentDatabaseImplementation.Implementations
{
    /// <summary>
    /// Реализация ILecturerPostService
    /// </summary>
    public class LecturerPostService :
		AbstractGenerticEntityService<LecturerPostGetBindingModel, LecturerPostSetBindingModel, LecturerPost, LecturerPostListViewModel, LecturerPostViewModel>, 
		ILecturerPostService
	{
		protected override OperationResultModel AdditionalCheckingWhenAdding(DbContext context, LecturerPostSetBindingModel model) => OperationResultModel.Success(null);

		protected override OperationResultModel AdditionalCheckingWhenDeleting(DbContext context, LecturerPost entity, LecturerPostGetBindingModel model) => OperationResultModel.Success(null);

		protected override IQueryable<LecturerPost> AdditionalCheckingWhenReadingList(IQueryable<LecturerPost> query, LecturerPostGetBindingModel model)
		{
			if (model.PostId.HasValue)
			{
				query = query.Where(x => x.PostId == model.PostId);
			}
			if (model.LecturerId.HasValue)
			{
				query = query.Where(x => x.LecturerId == model.LecturerId);
			}
			return query;
		}

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

		protected override void AdditionalDeleting(DbContext context, LecturerPost entity, LecturerPostGetBindingModel model) { }

		protected override LecturerPost GetUniqueEntity(LecturerPostSetBindingModel model, DbContext context) => context.Set<LecturerPost>().FirstOrDefault(x => x.LecturerId == model.LecturerId && x.PostId == model.PostId && x.Id != model.Id);

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

		protected override IQueryable<LecturerPost> OrderingWhenReading(IQueryable<LecturerPost> query) => query.OrderBy(x => x.Lecturer.LastName);
	}
}