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>
    /// 论坛帖子Service业务层处理
    /// </summary>
    [AppService(ServiceType = typeof(IT_PostsService), ServiceLifetime = LifeTime.Transient)]
    public class T_PostsService : BaseService<T_Posts>, IT_PostsService
    {
        /// <summary>
        /// 查询论坛帖子列表
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<T_PostsDto> GetList(T_PostsQueryDto parm)
        {
            var predicate = QueryExp(parm);

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

            return response;
        }


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

            return response;
        }

        /// <summary>
        /// 添加论坛帖子
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public T_Posts AddT_Posts(T_Posts model)
        {
            return Insertable(model).ExecuteReturnEntity();
        }

        /// <summary>
        /// 修改论坛帖子
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public int UpdateT_Posts(T_Posts model)
        {
            return Update(model, true, "修改论坛帖子");
        }

        /// <summary>
        /// 导出论坛帖子
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<T_PostsDto> ExportList(T_PostsQueryDto parm)
        {
            parm.PageNum = 1;
            parm.PageSize = 100000;
            var predicate = QueryExp(parm);

            var response = Queryable()
                .Where(predicate.ToExpression())
                .Select((it) => new T_PostsDto()
                {
                    //IsTopLabel = it.IsTop.GetConfigValue<Model.System.SysDictData>("liveforum_action_bool"),
                    //StatusLabel = it.Status.GetConfigValue<Model.System.SysDictData>("liveforum_posts_status"),
                }, true)
                .ToPage(parm);

            return response;
        }

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

            predicate = predicate.AndIF(parm.UserId != null, it => it.UserId == parm.UserId);
            predicate = predicate.AndIF(!string.IsNullOrEmpty(parm.Title), it => it.Title == parm.Title);
            predicate = predicate.AndIF(parm.Status != null, it => it.Status == parm.Status);
            predicate = predicate.AndIF(parm.IsDeleted != null, it => it.IsDeleted == parm.IsDeleted);
            return predicate;
        }
    }
}