using System;
using System.Linq;
using System.Text;
using System.Data.Common;
using System.Linq.Expressions;
using System.Collections.Generic;
using System.Threading.Tasks;
using YiSha.Util;
using YiSha.Util.Extension;
using YiSha.Util.Model;
using YiSha.Data;
using YiSha.Data.Repository;
using YiSha.Enum;
using System.ComponentModel.DataAnnotations.Schema;
using YiSha.Entity.TK;
using YiSha.Model.Param.TK;
using YiSha.IService.TK;
using YiSha.Model.Result.TK;
using YiSha.Web.Code;

namespace YiSha.Service.TK
{
    /// <summary>
    /// 创 建：cmzx
    /// 日 期：2021-04-21 15:55
    /// 描 述：图库图片信息表服务实现类（部分类）
    /// </summary>
    public partial class ImageManagerModelsService
    {
        private IRepositoryFactory _baseRepository;
        public ImageManagerModelsService(IRepositoryFactory baseRepository)
        {
            _baseRepository = baseRepository;
        }

        /// <summary>
        /// 获取分页数据
        /// </summary>
        /// <param name="param">请求参数</param>
        /// <param name="pagination">分页条件</param>
        /// <returns></returns>
        public async Task<List<ImageManagerModelsPageJoinModel>> GetPageListPartial(ImageManagerModelsListParam param, Pagination pagination)
        {
            var parameters = new List<DbParameter>();
            var sql = SqlPageList(param, pagination, out parameters);
            var list = await _baseRepository.BaseRepository(dbConnectType).FindList<ImageManagerModelsPageJoinModel>(sql, parameters.ToArray());
            return list.ToList();
        }

        /// <summary>
        /// 保存数据（由于之前数据库设计不规范，无法实现在新增、修改时保存正确的操作用户信息，每张表的创建时间和创建人id、创建人姓名都不一样，且这些字段是必填项）
        /// </summary>
        /// <param name="entity">实体参数</param>
        /// <returns></returns>
        public async Task<int> SaveFormPartial(ImageManagerModelsEntity entity)
        {
            OperatorInfo user = await Operator.Instance.Current(entity.Token);
            if (entity.Id.IsNullOrZero())
            {
                entity.createTime = DateTime.Now;
                entity.createUserId = user?.UserId;
                entity.createUserName = user?.UserName;
                entity.Years = DateTime.Now.Year.ToString();
                entity.updateTime = DateTime.Now;
                return await _baseRepository.BaseRepository(dbConnectType).Insert(entity);
            }
            else
            {
                return await _baseRepository.BaseRepository(dbConnectType).Update(entity);
            }
        }

        /// <summary>
        /// 获取最后一期 期数
        /// </summary>
        /// <param name="Year"></param>
        /// <returns></returns>
        public async Task<string> GetLastQi(int Year)
        {
            var sql = @"select top 1 periodsNumber from ImageManagerModels
                        where Years = @Year and isDelete = 0 order by periodsNumber desc;";
            var param = new List<DbParameter>();
            param.Add(DbParameterExtension.CreateDbParameter("@Year", Year, dbConnectType));
            var list = await _baseRepository.BaseRepository(dbConnectType).FindList<ImageManagerModelsEntity>(sql, param.ToArray());
            return list.FirstOrDefault()?.periodsNumber;
        }
        #region 私有方法
        /// <summary>
        /// 列表条件过滤
        /// 建议该方法放在Partial部分类中，因为代码生成时当前类会被覆盖（该方法在生成时将会被注释）
        /// </summary>
        /// <param name="param"></param>
        /// <returns></returns>
        private Expression<Func<ImageManagerModelsEntity, bool>> ListFilterPartial(ImageManagerModelsListParam param)
        {
            var expression = LinqExtensions.True<ImageManagerModelsEntity>();
            if (param != null)
            {
            }
            return expression;
        }

        /// <summary>
        /// 获取分页Sql语句
        /// </summary>
        /// <param name="param"></param>
        /// <returns></returns>
        private string SqlPageList(ImageManagerModelsListParam param, Pagination pagination, out List<DbParameter> parameters)
        {
            parameters = new List<DbParameter>();
            var where = new StringBuilder();
            where.Append(" 1 = 1 ");
            if (param != null)
            {
                if (!string.IsNullOrEmpty(param.GalleryName))
                {
                    where.Append(" and gal.GalleryName like @GalleryName ");
                    parameters.Add(DbParameterExtension.CreateDbParameter("@GalleryName", $"%{param.GalleryName}%", dbConnectType));
                }

                if (!param.PeriodsNumber.IsNullOrZero())
                {
                    where.Append(" and img.periodsNumber = @PeriodsNumber ");
                    parameters.Add(DbParameterExtension.CreateDbParameter("@PeriodsNumber", param.PeriodsNumber, dbConnectType));
                }

                if (!string.IsNullOrEmpty(param.CreateUserName))
                {
                    where.Append(" and img.createUserName = @CreateUserName ");
                    parameters.Add(DbParameterExtension.CreateDbParameter("@CreateUserName", param.CreateUserName, dbConnectType));
                }
            }

            //获取分页数据Sql
            var pageSql = $@"select 
                             img.Id,
                             img.periodsNumber,
                             img.Years,
                             img.createTime,
                             img.createUserName,
                             gal.galleryNumber,
                             gal.galleryName,
                             gal.isPicZip
                             from ImageManagerModels img
                             left join galleryManagerModels gal on img.galleryId  = gal.ID
                             where {where.ToString()}";
            //统计总数据Sql
            var totalSql = $@"select 
                             count(1) 
                             from ImageManagerModels img
                             left join galleryManagerModels gal on img.galleryId  = gal.ID
                             where {where.ToString()}";
            pageSql = SqlserverHelper.GetInstance.SqlPageList(pageSql, totalSql, pagination);
            return pageSql;
        }
        #endregion
    }
}