using FreeSql;

using LiveForum.Code.Base;
using LiveForum.IService.Others;
using LiveForum.Model;
using LiveForum.Model.Dto.Others;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace LiveForum.Service.Others
{
    public class HomePopupsService : IHomePopupsService
    {
        private readonly IBaseRepository<T_HomePopups> _homePopupsRepository;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="homePopupsRepository">首页弹窗仓储</param>
        public HomePopupsService(IBaseRepository<T_HomePopups> homePopupsRepository)
        {
            _homePopupsRepository = homePopupsRepository;
        }

        /// <summary>
        /// 获取首页弹窗
        /// </summary>
        /// <returns></returns>
        public async Task<BaseResponse<HomePopupDto>> GetHomePopup()
        {
            var now = DateTime.Now;

            // 查询启用的弹窗，按排序顺序取第一个
            var popup = await _homePopupsRepository.Select
                .Where(x => x.IsActive &&
                           (x.StartTime == null || x.StartTime <= now) &&
                           (x.EndTime == null || x.EndTime >= now))
                .OrderBy(x => x.SortOrder)
                //.ThenByDescending(x => x.CreatedAt)
                .FirstAsync();

            if (popup == null)
            {
                return new BaseResponse<HomePopupDto>(ResponseCode.Success, null);
            }

            // 增加浏览次数
            popup.ViewCount++;
            await _homePopupsRepository.UpdateAsync(popup);

            var result = new HomePopupDto
            {
                PopupId = popup.Id,
                Title = popup.Title ?? "",
                ImageUrl = popup.ImageUrl ?? "",
                LinkUrl = popup.LinkUrl ?? "",
                LinkType = popup.LinkType ?? 4,
                TargetId = popup.LinkUrl,
                SortOrder = popup.SortOrder
            };

            return new BaseResponse<HomePopupDto>(result);
        }

        /// <summary>
        /// 点击弹窗
        /// </summary>
        /// <param name="request">请求参数</param>
        /// <returns></returns>
        public async Task<BaseResponse<HomePopupClickRespDto>> ClickPopup(HomePopupClickReq request)
        {
            // 获取弹窗
            var popup = await _homePopupsRepository.Select
                .Where(x => x.Id == request.PopupId)
                .FirstAsync();

            if (popup == null)
            {
                return new BaseResponse<HomePopupClickRespDto>(ResponseCode.Error, "弹窗不存在");
            }

            // 增加点击次数
            popup.ClickCount++;
            await _homePopupsRepository.UpdateAsync(popup);

            return new BaseResponse<HomePopupClickRespDto>(new HomePopupClickRespDto
            {
                ClickCount = popup.ClickCount
            });
        }
    }
}