using Infrastructure;
using Infrastructure.Attribute;
using Infrastructure.Extensions;

using ZR.LiveForum.Model.Liveforum;
using ZR.LiveForum.Model.Liveforum.Dto;
using ZR.Repository;
using ZR.Service.Liveforum.ILiveforumService;

namespace ZR.Service.Liveforum
{
    /// <summary>
    /// 认证申请记录Service业务层处理
    /// </summary>
    [AppService(ServiceType = typeof(IT_UserCertificationsService), ServiceLifetime = LifeTime.Transient)]
    public class T_UserCertificationsService : BaseService<T_UserCertifications>, IT_UserCertificationsService
    {
        private readonly IT_UsersService _usersService;
        private readonly IT_MessagesService _messagesService;

        public T_UserCertificationsService(IT_UsersService usersService, IT_MessagesService messagesService)
        {
            _usersService = usersService;
            _messagesService = messagesService;
        }
        /// <summary>
        /// 查询认证申请记录列表
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<T_UserCertificationsDto> GetList(T_UserCertificationsQueryDto parm)
        {
            var predicate = QueryExp(parm);

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

            return response;
        }


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

            return response;
        }

        /// <summary>
        /// 添加认证申请记录
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public T_UserCertifications AddT_UserCertifications(T_UserCertifications model)
        {
            
            return Insertable(model).ExecuteReturnEntity();
        }

        /// <summary>
        /// 修改认证申请记录
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public int UpdateT_UserCertifications(T_UserCertifications model)
        {
            return Update(model, true);
        }

        /// <summary>
        /// 审核认证申请
        /// </summary>
        /// <param name="parm">审核参数</param>
        /// <param name="reviewerId">审核人用户ID</param>
        /// <returns></returns>
        public int ReviewCertification(ReviewCertificationDto parm, long reviewerId)
        {
            // 验证审核状态
            if (parm.Status != 1 && parm.Status != 2)
            {
                throw new CustomException(ResultCode.CUSTOM_ERROR, "审核状态无效，只能为1（通过）或2（拒绝）");
            }

            // 验证拒绝时拒绝原因必填
            if (parm.Status == 2 && string.IsNullOrWhiteSpace(parm.RejectReason))
            {
                throw new CustomException(ResultCode.CUSTOM_ERROR, "审核拒绝时，拒绝原因不能为空");
            }

            // 获取认证记录
            var certification = GetById(parm.Id);
            if (certification == null)
            {
                throw new CustomException(ResultCode.CUSTOM_ERROR, "认证申请记录不存在");
            }

            // 验证状态为待审核
            if (certification.Status != 0)
            {
                throw new CustomException(ResultCode.CUSTOM_ERROR, "该认证申请记录已审核，不能重复审核");
            }
            
            // 使用事务处理
            return Context.Ado.UseTran(() =>
            {
                // 更新认证申请记录
                certification.Status = parm.Status;
                certification.ReviewerId = reviewerId;
                certification.ReviewedAt = DateTime.Now;
                if (parm.Status == 2)
                {
                    certification.RejectReason = parm.RejectReason;
                }
                Update(certification, false);

                // 如果审核通过，更新用户表
                if (parm.Status == 1)
                {
                    var user = _usersService.GetById(certification.UserId);
                    if (user == null)
                    {
                        throw new CustomException(ResultCode.CUSTOM_ERROR, "用户不存在");
                    }
                    user.CertifiedType = 1;
                    user.IsCertified = true;
                    _usersService.UpdateT_Users(user);
                }

                // 创建消息记录（审核通过或拒绝都需要发送消息）
                var messageContent = parm.Status == 1 
                    ? "您的认证申请已通过审核" 
                    : $"您的认证申请未通过审核，原因：{parm.RejectReason}";
                _messagesService.SendSystemNotification(certification.UserId, messageContent, certification.Id);

                return 1;
            }).IsSuccess ? 1 : 0;
        }

        /// <summary>
        /// 导出认证申请记录
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<T_UserCertificationsDto> ExportList(T_UserCertificationsQueryDto parm)
        {
            parm.PageNum = 1;
            parm.PageSize = 100000;
            var predicate = QueryExp(parm);

            var response = Queryable()
                .Where(predicate.ToExpression())
                .Select((it) => new T_UserCertificationsDto()
                {
                    CertificationTypeLabel = it.CertificationType.GetConfigValue<Model.System.SysDictData>("liveforum_sk"),
                    StatusLabel = it.Status.GetConfigValue<Model.System.SysDictData>("liveforum_sk_review"),
                }, true)
                .ToPage(parm);

            return response;
        }

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

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