src/ZKEACMS/Common/Service/CarouselService.cs

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/* http://www.zkea.net/ 
 * Copyright (c) ZKEASOFT. All rights reserved. 
 * http://www.zkea.net/licenses */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using ZKEACMS.Common.Models;
using Easy.Constant;
using Easy.Extend;
using Easy.RepositoryPattern;
using Easy;
using Microsoft.EntityFrameworkCore;

namespace ZKEACMS.Common.Service
{
    public class CarouselService : ServiceBase<CarouselEntity, CMSDbContext>, ICarouselService
    {
        private readonly ICarouselItemService _carouselItemService;

        public CarouselService(ICarouselItemService carouselItemService, IApplicationContext applicationContext, CMSDbContext dbContext)
            : base(applicationContext, dbContext)
        {
            _carouselItemService = carouselItemService;
        }

        public override DbSet<CarouselEntity> CurrentDbSet => DbContext.Carousel;

        public override CarouselEntity Get(params object[] primaryKey)
        {
            var carousel = base.Get(primaryKey);
            carousel.CarouselItems = _carouselItemService.Get(m => m.CarouselID == carousel.ID).ToList();
            return carousel;
        }

        public override ServiceResult<CarouselEntity> Add(CarouselEntity item)
        {
            var result = base.Add(item);
            if (result.HasViolation)
            {
                return result;
            }
            if (item.CarouselItems != null)
            {
                _carouselItemService.BeginBulkSave();
                item.CarouselItems.Each(m =>
                {
                    m.CarouselID = item.ID;
                    if (m.ActionType == ActionType.Create)
                    {
                        var itemResult = _carouselItemService.Add(m);
                        if (itemResult.HasViolation)
                        {
                            result.RuleViolations.AddRange(itemResult.RuleViolations);
                        }
                    }
                });
                _carouselItemService.SaveChanges();
            }