using CRM.Core.BLL.Util;
using CRM.Core.BLL.Wx;
using CRM.Core.Model.Entity;
using CRM.Core.Model.EntityUserCenter;
using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CRM.Core.BLL.Application.QsurveyOrder
{
    public class QsurveyOrderServices
    {
        private readonly CACHE_BL _cache;
        public QsurveyOrderServices() { 
            _cache = new CACHE_BL();
        }

        public QsurveyOrderResultDto GetList(QsurveyOrderQueryDto query)
        {
            var qsurveyids = _cache.GetValue_Parameter("qsurveyids");
            if (string.IsNullOrEmpty(qsurveyids))
                qsurveyids = "82";

            // 声明参数列表
            var parameters = new List<MySqlParameter>();

            // 基础查询SQL
            // 基础查询SQL
            var baseQuery = $@"
                SELECT a.*, c.umid, c.username, c.nickname, c.headimgurl 
                FROM (
                    SELECT 
                        a.qsurveyid,
                        a.appid,
                        a.appuserid,
                        MIN(a.cTime) AS cTime
                    FROM `dncmsbase`.`qsurveyorder` a
                    WHERE a.`qsurveyid` IN ({qsurveyids})
                    {(query.starttime.HasValue ? "AND a.cTime >= @StartTime" : "")}
                    {(query.endtime.HasValue ? "AND a.cTime <= @EndTime" : "")}
                    GROUP BY a.qsurveyid, a.appid, a.appuserid
                ) a
                LEFT JOIN `dncmsbase`.`user` AS b 
                    ON a.appid = b.appid AND a.appuserid = b.appuserid 
                LEFT JOIN `dncmsbase`.`user_customer` AS c 
                    ON b.customerid = c.customerid
                {(string.IsNullOrEmpty(query.umid) ? "" : "WHERE c.umid = @Umid")}
                {(string.IsNullOrEmpty(query.username) 
                    ? "" 
                    : (string.IsNullOrEmpty(query.umid) ? "WHERE " : "AND ") + "c.username LIKE @Username")}
                LIMIT @PageOffset, @PageSize";

            // 总记录数SQL
            var countQuery = $@"
                SELECT COUNT(1) 
                FROM (
                    SELECT 
                        a.qsurveyid,
                        a.appid,
                        a.appuserid,
                        MIN(a.cTime) AS cTime
                    FROM `dncmsbase`.`qsurveyorder` a
                    WHERE a.`qsurveyid` IN ({qsurveyids})
                    {(query.starttime.HasValue ? "AND a.cTime >= @StartTime" : "")}
                    {(query.endtime.HasValue ? "AND a.cTime <= @EndTime" : "")}
                    GROUP BY a.qsurveyid, a.appid, a.appuserid
                ) a
                {(string.IsNullOrEmpty(query.umid) && string.IsNullOrEmpty(query.username) 
                    ? "" 
                    : $@"
                    LEFT JOIN `dncmsbase`.`user` AS b 
                        ON a.appid = b.appid AND a.appuserid = b.appuserid 
                    LEFT JOIN `dncmsbase`.`user_customer` AS c 
                        ON b.customerid = c.customerid
                    {(string.IsNullOrEmpty(query.umid) ? "" : "WHERE c.umid = @Umid")}
                    {(string.IsNullOrEmpty(query.username) 
                        ? "" 
                        : (string.IsNullOrEmpty(query.umid) ? "WHERE " : "AND ") + "c.username LIKE @Username")}")}";

            // 参数添加保持不变
            if (query.starttime.HasValue)
                parameters.Add(new MySqlParameter("@StartTime", query.starttime.Value));
            if (query.endtime.HasValue)
                parameters.Add(new MySqlParameter("@EndTime", query.endtime.Value));
            if (!string.IsNullOrEmpty(query.umid))
                parameters.Add(new MySqlParameter("@Umid", query.umid));
            if (!string.IsNullOrEmpty(query.username))
                parameters.Add(new MySqlParameter("@Username", $"%{query.username}%"));
            parameters.Add(new MySqlParameter("@PageOffset", (query.PageIndex - 1) * query.PageSize));
            parameters.Add(new MySqlParameter("@PageSize", query.PageSize));

            using (var context = new UserCenterContext())
            {
                var result = new QsurveyOrderResultDto
                {
                    Items = context.Database.SqlQuery<QsurveyOrderViewDto>(baseQuery, parameters.ToArray()).ToList(),
                    TotalCount = context.Database.SqlQuery<int>(countQuery, parameters.ToArray()).FirstOrDefault()
                };
                return result;
            }
        }
    }

    public class QsurveyOrderQueryDto
    {
        public string umid { get; set; }
        public string username { get; set; }
        public DateTime? starttime { get; set; }
        public DateTime? endtime { get; set; }
        public int PageIndex { get; set; } = 1;
        public int PageSize { get; set; } = 20;
    }

    public class QsurveyOrderViewDto
    {
        public int QsurveyId { get; set; }
        public string AppId { get; set; }
        public string AppUserId { get; set; }
        public string Umid { get; set; }
        public string Username { get; set; }
        public string Nickname { get; set; }
        public string Headimgurl { get; set; }
        public DateTime cTime { get; set; }
    }

    public class QsurveyOrderResultDto
    {
        public List<QsurveyOrderViewDto> Items { get; set; }
        public int TotalCount { get; set; }
    }
}