using Infrastructure.Attribute;
using Infrastructure.Extensions;
using ZR.LiveForum.Model.Liveforum.Dto;
using ZR.LiveForum.Model.Liveforum;
using ZR.Repository;
using ZR.Service.Liveforum.ILiveforumService;

namespace ZR.Service.Liveforum
{
    /// <summary>
    /// 轮播图表，存储首页轮播图配置信息Service业务层处理
    /// </summary>
    [AppService(ServiceType = typeof(ITBannersService), ServiceLifetime = LifeTime.Transient)]
    public class TBannersService : BaseService<TBanners>, ITBannersService
    {
        /// <summary>
        /// 查询轮播图表，存储首页轮播图配置信息列表
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<TBannersDto> GetList(TBannersQueryDto parm)
        {
            var predicate = QueryExp(parm);

            var response = Queryable()
                //.OrderBy("Id desc")
                .Where(predicate.ToExpression())
                .ToPage<TBanners, TBannersDto>(parm);

            return response;
        }


        /// <summary>
        /// 获取详情
        /// </summary>
        /// <param name="Id"></param>
        /// <returns></returns>
        public TBanners GetInfo(int Id)
        {
            var response = Queryable()
                .Where(x => x.Id == Id)
                .First();

            return response;
        }

        /// <summary>
        /// 添加轮播图表，存储首页轮播图配置信息
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public TBanners AddTBanners(TBanners model)
        {
            return Insertable(model).ExecuteReturnEntity();
        }

        /// <summary>
        /// 修改轮播图表，存储首页轮播图配置信息
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public int UpdateTBanners(TBanners model)
        {
            return Update(model, true);
        }

        /// <summary>
        /// 查询导出表达式
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        private static Expressionable<TBanners> QueryExp(TBannersQueryDto parm)
        {
            var predicate = Expressionable.Create<TBanners>();

            return predicate;
        }
    }
}