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

namespace DepartmentDatabaseImplementation.Implementations.AbstractGenerticEntityService
{
    /// <summary>
    /// Реализация IDisciplineService
    /// </summary>
    public class DisciplineService :
		AbstractGenerticEntityService<DisciplineGetBindingModel, DisciplineSetBindingModel, Discipline, DisciplineListViewModel, DisciplineViewModel>, 
		IDisciplineService
	{
		protected override OperationResultModel AdditionalCheckingWhenAdding(DbContext context, DisciplineSetBindingModel model) => OperationResultModel.Success(null);

		protected override OperationResultModel AdditionalCheckingWhenDeleting(DbContext context, Discipline entity, DisciplineGetBindingModel model)
		{
			if (context.Set<AcademicPlanRecord>().Any(x => x.DisciplineId == model.Id && !x.IsDeleted))
			{
				return OperationResultModel.Error("Error:", "Есть записи учебного плана, относящиеся к этой дисциплине", ResultServiceStatusCode.ExsistItem);
			}
			return OperationResultModel.Success(null);
		}

		protected override IQueryable<Discipline> AdditionalCheckingWhenReadingList(IQueryable<Discipline> query, DisciplineGetBindingModel model)
		{
			if (model.DisciplineName.IsNotEmpty())
			{
				query = query.Where(x => x.DisciplineName.Contains(model.DisciplineName));
			}
			if (model.DisciplineBlockId.HasValue)
			{
				query = query.Where(x => x.DisciplineBlockId == model.DisciplineBlockId.Value);
			}
			return query;
		}

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

		protected override void AdditionalDeleting(DbContext context, Discipline entity, DisciplineGetBindingModel model) { }

		protected override Discipline GetUniqueEntity(DisciplineSetBindingModel model, DbContext context) => context.Set<Discipline>().FirstOrDefault(x => x.DisciplineName == model.DisciplineName && x.Id != model.Id);

		protected override IQueryable<Discipline> IncludingWhenReading(IQueryable<Discipline> query) => query.Include(x => x.DisciplineBlock);

		protected override IQueryable<Discipline> OrderingWhenReading(IQueryable<Discipline> query) => query.OrderBy(x => x.DisciplineBlock.DisciplineBlockOrder).ThenBy(x => x.DisciplineName);
	}
}