using Infrastructure.Attribute;
using Microsoft.AspNetCore.Http;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ARW.Model;
using ARW.Repository;
using ARW.Repository.Business.Advertisement.Banners;
using ARW.Service.Api.IBusinessService.Advertisement.Banners;
using ARW.Model.Dto.Api.Advertisement.Banners;
using ARW.Model.Models.Business.Advertisement.Banners;
using ARW.Model.Vo.Api.Advertisement.Banners;

namespace ARW.Service.Api.BusinessService.Advertisement.Banners
{
    /// <summary>
    /// 轮播图接口实现类Api
    ///
    /// @author lwh
    /// @date 2023-10-09
    /// </summary>
    [AppService(ServiceType = typeof(IBannerServiceApi), ServiceLifetime = LifeTime.Transient)]
    public class BannerServiceImplApi : BaseService<Banner>, IBannerServiceApi
    {
        private readonly BannerRepository _BannerRepository;

        public BannerServiceImplApi(BannerRepository BannerRepository)
        {
            this._BannerRepository = BannerRepository;
        }

        #region Api接口代码


        /// <summary>
        /// 查询轮播图列表(Api)
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public async Task<List<BannerVoApi>> GetBannerListApi(BannerQueryDtoApi parm)
        {
            //开始拼装查询条件d
            var predicate = Expressionable.Create<Banner>();

            predicate = predicate.AndIF(parm.BannerPosition != null, s => s.BannerPosition == parm.BannerPosition);
            var query = _BannerRepository
                .Queryable()
                .Where(predicate.ToExpression())
                .OrderBy(s => s.BannerSort, OrderByType.Asc)
                .Select(s => new BannerVoApi
                {
                    BannerPosition = s.BannerPosition,
                    BannerImg = s.BannerImg,
                    BannerSort = s.BannerSort,
                });


            return await query.ToListAsync();
        }



        #endregion

    }
}