using DatabaseCore;
using DatabaseCore.Models.Department;
using DepartmentBusinessLogic.BindingModels;
using DepartmentBusinessLogic.Interfaces;
using DepartmentBusinessLogic.ViewModels;
using Microsoft.EntityFrameworkCore;
using ModuleTools.Models;
using System.Linq;

namespace DepartmentDatabaseImplementation.Implementations
{
	/// <summary>
	/// Реализация IOrderStudentRecordService
	/// </summary>
	public class OrderStudentRecordService :
		AbstractGenerticEntityService<OrderStudentRecordGetBindingModel, OrderStudentRecordSetBindingModel, OrderStudentRecord, OrderStudentRecordListViewModel, OrderStudentRecordViewModel>,
		IOrderStudentRecordService
	{
		protected override OperationResultModel AdditionalCheckingWhenAdding(DbContext context, OrderStudentRecordSetBindingModel model) => OperationResultModel.Success(null);

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

		protected override IQueryable<OrderStudentRecord> AdditionalCheckingWhenReadingList(IQueryable<OrderStudentRecord> query, OrderStudentRecordGetBindingModel model)
		{
			if (model.OrderId.HasValue)
			{
				query = query.Where(x => x.OrderId == model.OrderId.Value);
			}
			if (model.StudentId.HasValue)
			{
				query = query.Where(x => x.StudentId == model.StudentId.Value);
			}
			if (model.StudentGroupId.HasValue)
			{
				query = query.Where(x => x.StudentGroupFromId == model.StudentGroupId.Value || x.StudentGroupToId == model.StudentGroupId.Value);
			}
			return query;
		}

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

		protected override void AdditionalDeleting(DbContext context, OrderStudentRecord entity, OrderStudentRecordGetBindingModel model) { }

		protected override OrderStudentRecord GetUniqueEntity(OrderStudentRecordSetBindingModel model, DbContext context) => context.Set<OrderStudentRecord>().FirstOrDefault(x => x.StudentId == model.StudentId && x.OrderId == model.OrderId && x.Id != model.Id);

		protected override IQueryable<OrderStudentRecord> IncludingWhenReading(IQueryable<OrderStudentRecord> query) => query.Include(x => x.Order).Include(x => x.Student).Include(x => x.StudentGroupFrom).Include(x => x.StudentGroupTo);

		protected override IQueryable<OrderStudentRecord> OrderingWhenReading(IQueryable<OrderStudentRecord> query) => query.OrderBy(x => x.Order.OrderDate).ThenBy(x => x.Order.OrderNumber).ThenBy(x => x.OrderStudentMoveType).ThenBy(x => x.Student.LastName).ThenBy(x => x.Student.FirstName);

		protected override bool AdditionalCheckForSingleGet(OrderStudentRecordGetBindingModel model)
		{
			if (model.OrderId.HasValue && model.StudentId.HasValue && model.OrderStudentMoveType.HasValue)
			{
				return true;
			}
			return base.AdditionalCheckForSingleGet(model);
		}

		protected override OrderStudentRecord GetSingleRecord(IQueryable<OrderStudentRecord> list, OrderStudentRecordGetBindingModel model)
		{
			if (model.OrderId.HasValue && model.StudentId.HasValue && model.OrderStudentMoveType.HasValue)
			{
				return list.FirstOrDefault(x => x.OrderId == model.OrderId && x.StudentId == model.StudentId && x.OrderStudentMoveType == (int)model.OrderStudentMoveType);
			}
			return base.GetSingleRecord(list, model);
		}
	}
}