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

namespace DepartmentDatabaseImplementation.Implementations
{
	/// <summary>
	/// Реализация IOrderService
	/// </summary>
	public class OrderService :
		AbstractGenerticEntityService<OrderGetBindingModel, OrderSetBindingModel, Order, OrderListViewModel, OrderViewModel>,
		IOrderService
	{
		protected override OperationResultModel AdditionalCheckingWhenAdding(DbContext context, OrderSetBindingModel model) => OperationResultModel.Success(null);

		protected override OperationResultModel AdditionalCheckingWhenDeleting(DbContext context, Order entity, OrderGetBindingModel model)
		{
			if (context.Set<OrderStudentRecord>().Any(x => x.OrderId == model.Id && !x.IsDeleted))
			{
				return OperationResultModel.Error("Error:", "Есть записи приказа по студентам, относящиеся к этому приказу", ResultServiceStatusCode.ExsistItem);
			}
			return OperationResultModel.Success(null);
		}

		protected override IQueryable<Order> AdditionalCheckingWhenReadingList(IQueryable<Order> query, OrderGetBindingModel model)
		{
			if(model.OrderDate.HasValue && model.OrderNumber.IsNotEmpty())
			{
				query = query.Where(x => x.OrderNumber == model.OrderNumber && x.OrderDate == model.OrderDate);
			}

			return query;
		}

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

		protected override void AdditionalDeleting(DbContext context, Order entity, OrderGetBindingModel model) { }

		protected override Order GetUniqueEntity(OrderSetBindingModel model, DbContext context) => context.Set<Order>().FirstOrDefault(x => x.OrderNumber == model.OrderNumber && x.Id != model.Id);

		protected override IQueryable<Order> IncludingWhenReading(IQueryable<Order> query) => query;

		protected override IQueryable<Order> OrderingWhenReading(IQueryable<Order> query) => query.OrderBy(x => x.OrderDate).ThenBy(x => x.OrderNumber);

		protected override bool AdditionalCheckForSingleGet(OrderGetBindingModel model)
		{
			if (model.OrderNumber.IsNotEmpty())
			{
				return true;
			}
			return base.AdditionalCheckForSingleGet(model);
		}

		protected override Order GetSingleRecord(IQueryable<Order> list, OrderGetBindingModel model)
		{
			if (model.OrderNumber.IsNotEmpty())
			{
				return list.FirstOrDefault(x => x.OrderNumber == model.OrderNumber);
			}
			return base.GetSingleRecord(list, model);
		}
	}
}