using Admin.Core.Common;
using Admin.Core.Model;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Linq.Expressions;
using System.Threading.Tasks;
using Admin.Core.IRepository;

namespace Admin.Core.Repository
{
    public class BaseRepository<TEntity> : IBaseRepository<TEntity> where TEntity : class, new()
    {
        private readonly IUnitOfWork _unitOfWork;
        private SqlSugarClient _dbBase;

        private ISqlSugarClient _db
        {
            get
            {
                /* 如果要开启多库支持，
                 * 1、在appsettings.json 中开启MutiDBEnabled节点为true，必填
                 * 2、设置一个主连接的数据库ID，节点MainDB，对应的连接字符串的Enabled也必须true，必填
                 */
                if (Appsettings.app(new string[] { "MutiDBEnabled" }).ObjToBool())
                {
                    if (typeof(TEntity).GetTypeInfo().GetCustomAttributes(typeof(SugarTable), true).FirstOrDefault((x => x.GetType() == typeof(SugarTable))) is SugarTable sugarTable && !string.IsNullOrEmpty(sugarTable.TableDescription))
                    {
                        _dbBase.ChangeDatabase(sugarTable.TableDescription.ToLower());
                    }
                    else
                    {
                        _dbBase.ChangeDatabase(MainDb.CurrentDbConnId.ToLower());
                    }
                }

                return _dbBase;
            }
        }

        public ISqlSugarClient Db
        {
            get { return _db; }
        }

        public BaseRepository(IUnitOfWork unitOfWork)
        {
            _unitOfWork = unitOfWork;
            _dbBase = unitOfWork.GetDbClient();
        }

        #region 判断数据库连接状态
        /// <summary>
        /// 判断数据库连接状态
        /// </summary>
        /// <returns></returns>
        public bool GetConnectionState()
        {
            return _db.Ado.IsValidConnection();
        } 
        #endregion

        #region 异步方法

        //public ISqlSugarClient GetDb(string configID)
        //{
        //    return _dbBase.ChangeDatabase(configID);
        //}

        public async Task<TEntity> QueryByIdAsync(object objId)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().In(objId).SingleAsync();
        }
        /// <summary>
        /// 功能描述:根据ID查询一条数据
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="objId">id（必须指定主键特性 [SugarColumn(IsPrimaryKey=true)]），如果是联合主键，请使用Where条件</param>
        /// <param name="blnUseCache">是否使用缓存</param>
        /// <returns>数据实体</returns>
        public async Task<TEntity> QueryByIdAsync(object objId, bool blnUseCache = false)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().WithCacheIF(blnUseCache).In(objId).SingleAsync();
        }

        /// <summary>
        /// 功能描述:根据ID查询数据
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="lstIds">id列表（必须指定主键特性 [SugarColumn(IsPrimaryKey=true)]），如果是联合主键，请使用Where条件</param>
        /// <returns>数据实体列表</returns>
        public async Task<List<TEntity>> QueryByIDsAsync(object[] lstIds)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().In(lstIds).ToListAsync();
        }

        /// <summary>
        /// 写入实体数据
        /// </summary>
        /// <param name="entity">博文实体类</param>
        /// <returns></returns>
        public async Task<int> AddAsync(TEntity entity)
        {
            //var i = await Task.Run(() => _db.Insertable(entity).ExecuteReturnBigIdentity());
            ////返回的i是long类型,这里你可以根据你的业务需要进行处理
            //return (int)i;

            var insert = _db.Insertable(entity);

            //这里你可以返回TEntity，这样的话就可以获取id值，无论主键是什么类型
            //var return3 = await insert.ExecuteReturnEntityAsync();

            return await insert.ExecuteReturnIdentityAsync();
        }


        /// <summary>
        /// 写入实体数据
        /// </summary>
        /// <param name="entity">实体类</param>
        /// <param name="insertColumns">指定只插入列</param>
        /// <returns>返回自增量列</returns>
        public async Task<int> AddAsync(TEntity entity, Expression<Func<TEntity, object>> insertColumns = null)
        {
            var insert = _db.Insertable(entity);
            if (insertColumns == null)
            {
                return await insert.ExecuteReturnIdentityAsync();
            }
            else
            {
                return await insert.InsertColumns(insertColumns).ExecuteReturnIdentityAsync();
            }
        }

        /// <summary>
        /// 批量插入实体(速度快)
        /// </summary>
        /// <param name="listEntity">实体集合</param>
        /// <returns>影响行数</returns>
        public async Task<int> AddAsync(List<TEntity> listEntity)
        {
            return await _db.Insertable(listEntity.ToArray()).ExecuteCommandAsync();
        }

        /// <summary>
        /// 更新实体数据
        /// </summary>
        /// <param name="entity">博文实体类</param>
        /// <returns></returns>
        public async Task<bool> UpdateAsync(TEntity entity)
        {
            ////这种方式会以主键为条件
            //var i = await Task.Run(() => _db.Updateable(entity).ExecuteCommand());
            //return i > 0;
            //这种方式会以主键为条件
            return await _db.Updateable(entity).ExecuteCommandHasChangeAsync();
        }

        public async Task<bool> UpdateAsync(TEntity entity, string strWhere)
        {
            //return await Task.Run(() => _db.Updateable(entity).Where(strWhere).ExecuteCommand() > 0);
            return await _db.Updateable(entity).Where(strWhere).ExecuteCommandHasChangeAsync();
        }

        public async Task<bool> UpdateAsync(string strSql, SugarParameter[] parameters = null)
        {
            //return await Task.Run(() => _db.Ado.ExecuteCommand(strSql, parameters) > 0);
            return await _db.Ado.ExecuteCommandAsync(strSql, parameters) > 0;
        }

        public async Task<bool> UpdateAsync(object operateAnonymousObjects)
        {
            return await _db.Updateable<TEntity>(operateAnonymousObjects).ExecuteCommandAsync() > 0;
        }

        public async Task<bool> UpdateAsync(
          TEntity entity,
          List<string> lstColumns = null,
          List<string> lstIgnoreColumns = null,
          string strWhere = ""
            )
        {
            //IUpdateable<TEntity> up = await Task.Run(() => _db.Updateable(entity));
            //if (lstIgnoreColumns != null && lstIgnoreColumns.Count > 0)
            //{
            //    up = await Task.Run(() => up.IgnoreColumns(it => lstIgnoreColumns.Contains(it)));
            //}
            //if (lstColumns != null && lstColumns.Count > 0)
            //{
            //    up = await Task.Run(() => up.UpdateColumns(it => lstColumns.Contains(it)));
            //}
            //if (!string.IsNullOrEmpty(strWhere))
            //{
            //    up = await Task.Run(() => up.Where(strWhere));
            //}
            //return await Task.Run(() => up.ExecuteCommand()) > 0;

            IUpdateable<TEntity> up = _db.Updateable(entity);
            if (lstIgnoreColumns != null && lstIgnoreColumns.Count > 0)
            {
                up = up.IgnoreColumns(lstIgnoreColumns.ToArray());
            }
            if (lstColumns != null && lstColumns.Count > 0)
            {
                up = up.UpdateColumns(lstColumns.ToArray());
            }
            if (!string.IsNullOrEmpty(strWhere))
            {
                up = up.Where(strWhere);
            }
            return await up.ExecuteCommandHasChangeAsync();
        }
        /// <summary>
        /// 正序查询第一条数据
        /// </summary>
        /// <returns></returns>
        public async Task<TEntity> FirstAsync()
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().FirstAsync();
        }
        /// <summary>
        /// 查询第一条数据
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<TEntity> FirstAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).FirstAsync();
        }
        /// <summary>
        /// 根据实体删除一条数据
        /// </summary>
        /// <param name="entity">博文实体类</param>
        /// <returns></returns>
        public async Task<bool> DeleteAsync(TEntity entity)
        {
            //var i = await Task.Run(() => _db.Deleteable(entity).ExecuteCommand());
            //return i > 0;
            return await _db.Deleteable(entity).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除指定ID的数据
        /// </summary>
        /// <param name="id">主键ID</param>
        /// <returns></returns>
        public async Task<bool> DeleteByIdAsync(object id)
        {
            //var i = await Task.Run(() => _db.Deleteable<TEntity>(id).ExecuteCommand());
            //return i > 0;
            return await _db.Deleteable<TEntity>(id).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除指定ID集合的数据(批量删除)
        /// </summary>
        /// <param name="ids">主键ID集合</param>
        /// <returns></returns>
        public async Task<bool> DeletesAsync(List<TEntity> entitys)
        {
            //var i = await Task.Run(() => _db.Deleteable<TEntity>().In(ids).ExecuteCommand());
            //return i > 0;
            return await _db.Deleteable<TEntity>(entitys).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 功能描述:查询所有数据
        /// 作　　者:Admin.Core
        /// </summary>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync()
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().ToListAsync();
        }

        /// <summary>
        /// 功能描述:查询数据列表
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="strWhere">条件</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(string strWhere)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList());
            return await _db.Queryable<TEntity>().WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToListAsync();
        }

        /// <summary>
        /// 功能描述:查询数据列表
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="whereExpression">whereExpression</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).ToListAsync();
        }

        /// <summary>
        /// 功能描述:按照特定列查询数据列表
        /// 作　　者:Admin.Core
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="expression"></param>
        /// <returns></returns>
        public async Task<List<TResult>> QueryAsync<TResult>(Expression<Func<TEntity, TResult>> expression)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().Select(expression).ToListAsync();
        }

        /// <summary>
        /// 功能描述:按照特定列查询数据列表带条件排序
        /// 作　　者:Admin.Core
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="whereExpression">过滤条件</param>
        /// <param name="expression">查询实体条件</param>
        /// <param name="strOrderByFileds">排序条件</param>
        /// <returns></returns>
        public async Task<List<TResult>> QueryAsync<TResult>(Expression<Func<TEntity, TResult>> expression, Expression<Func<TEntity, bool>> whereExpression, string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Select(expression).ToListAsync();
        }

        /// <summary>
        /// 功能描述:查询一个列表
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="whereExpression">条件表达式</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression, string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToList());
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).OrderByIF(strOrderByFileds != null, strOrderByFileds).ToListAsync();
        }
        /// <summary>
        /// 功能描述:查询一个列表
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <param name="orderByExpression"></param>
        /// <param name="isAsc"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, object>> orderByExpression, bool isAsc = true)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(orderByExpression != null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc).WhereIF(whereExpression != null, whereExpression).ToList());
            return await _db.Queryable<TEntity>().OrderByIF(orderByExpression != null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc).WhereIF(whereExpression != null, whereExpression).ToListAsync();
        }

        /// <summary>
        /// 功能描述:查询一个列表
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="strWhere">条件</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(string strWhere, string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList());
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToListAsync();
        }


        /// <summary>
        /// 功能描述:查询前N条数据
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="whereExpression">条件表达式</param>
        /// <param name="intTop">前N条</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(
            Expression<Func<TEntity, bool>> whereExpression,
            int intTop,
            string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Take(intTop).ToList());
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Take(intTop).ToListAsync();
        }

        /// <summary>
        /// 功能描述:查询前N条数据
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="strWhere">条件</param>
        /// <param name="intTop">前N条</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(
            string strWhere,
            int intTop,
            string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).Take(intTop).ToList());
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).Take(intTop).ToListAsync();
        }

        /// <summary>
        /// 根据sql语句查询
        /// </summary>
        /// <param name="strSql">完整的sql语句</param>
        /// <param name="parameters">参数</param>
        /// <returns>泛型集合</returns>
        public async Task<List<TEntity>> QuerySqlAsync(string strSql, SugarParameter[] parameters = null)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Ado.SqlQueryAsync<TEntity>(strSql, parameters);
        }

        /// <summary>
        /// 执行sql语句
        /// </summary>
        /// <param name="strSql">完整的sql语句</param>
        /// <param name="parameters">参数</param>
        /// <returns>泛型集合</returns>
        public async Task<int> ExecSqlAsync(string strSql, SugarParameter[] parameters = null)
        {
            return await _db.Ado.ExecuteCommandAsync(strSql, parameters);
        }

        /// <summary>
        /// 根据sql语句查询
        /// </summary>
        /// <param name="strSql">完整的sql语句</param>
        /// <param name="parameters">参数</param>
        /// <returns>DataTable</returns>
        public async Task<DataTable> QueryTableAsync(string strSql, SugarParameter[] parameters = null)
        {
            if (GetConnectionState() == false) return null;
            return await _db.Ado.GetDataTableAsync(strSql, parameters);
        }

        /// <summary>
        /// 功能描述:分页查询
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="whereExpression">条件表达式</param>
        /// <param name="intPageIndex">页码（下标0）</param>
        /// <param name="intPageSize">页大小</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(
            Expression<Func<TEntity, bool>> whereExpression,
            int intPageIndex,
            int intPageSize,
            string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToPageList(intPageIndex, intPageSize));
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToPageListAsync(intPageIndex, intPageSize);
        }

        /// <summary>
        /// 功能描述:分页查询
        /// 作　　者:Admin.Core
        /// </summary>
        /// <param name="strWhere">条件</param>
        /// <param name="intPageIndex">页码（下标0）</param>
        /// <param name="intPageSize">页大小</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(
          string strWhere,
          int intPageIndex,
          int intPageSize,

          string strOrderByFileds)
        {
            if (GetConnectionState() == false) return null;
            //return await Task.Run(() => _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToPageList(intPageIndex, intPageSize));
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToPageListAsync(intPageIndex, intPageSize);
        }



        /// <summary>
        /// 分页查询[使用版本，其他分页未测试]
        /// </summary>
        /// <param name="whereExpression">条件表达式</param>
        /// <param name="intPageIndex">页码（下标0）</param>
        /// <param name="intPageSize">页大小</param>
        /// <param name="strOrderByFileds">排序字段，如name asc,age desc</param>
        /// <returns></returns>
        public async Task<PageModel<TEntity>> QueryPageAsync(Expression<Func<TEntity, bool>> whereExpression, int intPageIndex = 1, int intPageSize = 20, string strOrderByFileds = null)
        {
            if (GetConnectionState() == false) return null;

            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<TEntity>()
             .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(intPageIndex, intPageSize, totalCount);

            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TEntity>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }


        /// <summary> 
        ///查询-多表查询
        /// </summary> 
        /// <typeparam name="T">实体1</typeparam> 
        /// <typeparam name="T2">实体2</typeparam> 
        /// <typeparam name="T3">实体3</typeparam>
        /// <typeparam name="TResult">返回对象</typeparam>
        /// <param name="joinExpression">关联表达式 (join1,join2) => new object[] {JoinType.Left,join1.UserNo==join2.UserNo}</param> 
        /// <param name="selectExpression">返回表达式 (s1, s2) => new { Id =s1.UserNo, Id1 = s2.UserNo}</param>
        /// <param name="whereLambda">查询表达式 (w1, w2) =>w1.UserNo == "")</param> 
        /// <returns>值</returns>
        public async Task<List<TResult>> QueryMuchAsync<T, T2, T3, TResult>(
            Expression<Func<T, T2, T3, object[]>> joinExpression,
            Expression<Func<T, T2, T3, TResult>> selectExpression,
            Expression<Func<T, T2, T3, bool>> whereLambda = null) where T : class, new()
        {
            if (GetConnectionState() == false) return null;
            if (whereLambda == null)
            {
                return await _db.Queryable(joinExpression).Select(selectExpression).ToListAsync();
            }
            return await _db.Queryable(joinExpression).Where(whereLambda).Select(selectExpression).ToListAsync();
        }


        /// <summary>
        /// 两表联合查询-分页
        /// </summary>
        /// <typeparam name="T">实体1</typeparam>
        /// <typeparam name="T2">实体1</typeparam>
        /// <typeparam name="TResult">返回对象</typeparam>
        /// <param name="joinExpression">关联表达式</param>
        /// <param name="selectExpression">返回表达式</param>
        /// <param name="whereExpression">查询表达式</param>
        /// <param name="intPageIndex">页码</param>
        /// <param name="intPageSize">页大小</param>
        /// <param name="strOrderByFileds">排序字段</param>
        /// <returns></returns>
        public async Task<PageModel<TResult>> QueryTabsPageAsync<T, T2, TResult>(
            Expression<Func<T, T2, object[]>> joinExpression,
            Expression<Func<T, T2, TResult>> selectExpression,
            Expression<Func<TResult, bool>> whereExpression,
            int intPageIndex = 1,
            int intPageSize = 20,
            string strOrderByFileds = null)
        {
            if (GetConnectionState() == false) return null;
            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<T, T2>(joinExpression)
             .Select(selectExpression)
             .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(intPageIndex, intPageSize, totalCount);
            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TResult>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }

        /// <summary>
        /// 两表联合查询-分页-分组
        /// </summary>
        /// <typeparam name="T">实体1</typeparam>
        /// <typeparam name="T2">实体1</typeparam>
        /// <typeparam name="TResult">返回对象</typeparam>
        /// <param name="joinExpression">关联表达式</param>
        /// <param name="selectExpression">返回表达式</param>
        /// <param name="whereExpression">查询表达式</param>
        /// <param name="intPageIndex">页码</param>
        /// <param name="intPageSize">页大小</param>
        /// <param name="strOrderByFileds">排序字段</param>
        /// <returns></returns>
        public async Task<PageModel<TResult>> QueryTabsPageAsync<T, T2, TResult>(
            Expression<Func<T, T2, object[]>> joinExpression,
            Expression<Func<T, T2, TResult>> selectExpression,
            Expression<Func<TResult, bool>> whereExpression,
            Expression<Func<T, object>> groupExpression,
            int intPageIndex = 1,
            int intPageSize = 20,
            string strOrderByFileds = null)
        {
            if (GetConnectionState() == false) return null;

            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<T, T2>(joinExpression).GroupBy(groupExpression)
             .Select(selectExpression)
             .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(intPageIndex, intPageSize, totalCount);
            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TResult>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }

        #endregion

        #region 同步方法

        public TEntity QueryById(object objId)
        {
            return _db.Queryable<TEntity>().In(objId).Single();
        }
        /// <summary
        /// 功能描述:根据ID查询一条数据
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="objId"id（必须指定主键特性 [SugarColumn(IsPrimaryKey=true)]），如果是联合主键，请使用Where条件</param
        /// <param name="blnUseCache"是否使用缓存</param
        /// <returns数据实体</returns
        public TEntity QueryById(object objId, bool blnUseCache = false)
        {
            return _db.Queryable<TEntity>().WithCacheIF(blnUseCache).In(objId).Single();
        }

        /// <summary
        /// 功能描述:根据ID查询数据
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="lstIds"id列表（必须指定主键特性 [SugarColumn(IsPrimaryKey=true)]），如果是联合主键，请使用Where条件</param
        /// <returns数据实体列表</returns
        public List<TEntity> QueryByIDs(object[] lstIds)
        {
            return _db.Queryable<TEntity>().In(lstIds).ToList();
        }

        /// <summary
        /// 写入实体数据
        /// </summary
        /// <param name="entity"博文实体类</param
        /// <returns</returns
        public int Add(TEntity entity)
        {
            var insert = _db.Insertable(entity);

            return insert.ExecuteReturnIdentity();
        }


        /// <summary
        /// 写入实体数据
        /// </summary
        /// <param name="entity"实体类</param
        /// <param name="insertColumns"指定只插入列</param
        /// <returns返回自增量列</returns
        public int Add(TEntity entity, Expression<Func<TEntity, object>> insertColumns = null)
        {
            var insert = _db.Insertable(entity);
            if (insertColumns == null)
            {
                return insert.ExecuteReturnIdentity();
            }
            else
            {
                return insert.InsertColumns(insertColumns).ExecuteReturnIdentity();
            }
        }

        /// <summary
        /// 批量插入实体(速度快)
        /// </summary
        /// <param name="listEntity"实体集合</param
        /// <returns影响行数</returns
        public int Add(List<TEntity> listEntity)
        {
            return _db.Insertable(listEntity.ToArray()).ExecuteCommand();
        }

        /// <summary
        /// 更新实体数据
        /// </summary
        /// <param name="entity"博文实体类</param
        /// <returns</returns
        public bool Update(TEntity entity)
        {
            ////这种方式会以主键为条件
            //var i =  Task.Run(() = _db.Updateable(entity).ExecuteCommand());
            //return i  0;
            //这种方式会以主键为条件
            return _db.Updateable(entity).ExecuteCommandHasChange();
        }

        public bool Update(TEntity entity, string strWhere)
        {
            //return  Task.Run(() = _db.Updateable(entity).Where(strWhere).ExecuteCommand()  0);
            return _db.Updateable(entity).Where(strWhere).ExecuteCommandHasChange();
        }

        public bool Update(string strSql, SugarParameter[] parameters = null)
        {
            //return  Task.Run(() = _db.Ado.ExecuteCommand(strSql, parameters)  0);
            return _db.Ado.ExecuteCommand(strSql, parameters) > 0;
        }

        public bool Update(object operateAnonymousObjects)
        {
            return _db.Updateable<TEntity>(operateAnonymousObjects).ExecuteCommand() > 0;
        }

        public bool Update(
          TEntity entity,
          List<string> lstColumns = null,
          List<string> lstIgnoreColumns = null,
          string strWhere = ""
            )
        {

            IUpdateable<TEntity> up = _db.Updateable(entity);
            if (lstIgnoreColumns != null && lstIgnoreColumns.Count > 0)
            {
                up = up.IgnoreColumns(lstIgnoreColumns.ToArray());
            }
            if (lstColumns != null && lstColumns.Count > 0)
            {
                up = up.UpdateColumns(lstColumns.ToArray());
            }
            if (!string.IsNullOrEmpty(strWhere))
            {
                up = up.Where(strWhere);
            }
            return up.ExecuteCommandHasChange();
        }

        /// <summary
        /// 根据实体删除一条数据
        /// </summary
        /// <param name="entity"博文实体类</param
        /// <returns</returns
        public bool Delete(TEntity entity)
        {
            //var i =  Task.Run(() = _db.Deleteable(entity).ExecuteCommand());
            //return i  0;
            return _db.Deleteable(entity).ExecuteCommandHasChange();
        }

        /// <summary
        /// 删除指定ID的数据
        /// </summary
        /// <param name="id"主键ID</param
        /// <returns</returns
        public bool DeleteById(object id)
        {
            //var i =  Task.Run(() = _db.Deleteable<TEntity(id).ExecuteCommand());
            //return i  0;
            return _db.Deleteable<TEntity>(id).ExecuteCommandHasChange();
        }

        /// <summary
        /// 删除指定ID集合的数据(批量删除)
        /// </summary
        /// <param name="ids"主键ID集合</param
        /// <returns</returns
        public bool Deletes(List<TEntity> entitys)
        {
            //var i =  Task.Run(() = _db.Deleteable<TEntity().In(ids).ExecuteCommand());
            //return i  0;
            return _db.Deleteable<TEntity>(entitys).ExecuteCommandHasChange();
        }



        /// <summary
        /// 功能描述:查询所有数据
        /// 作　　者:Admin.Core
        /// </summary
        /// <returns数据列表</returns
        public List<TEntity> Query()
        {
            return _db.Queryable<TEntity>().ToList();
        }

        /// <summary
        /// 功能描述:查询数据列表
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="strWhere"条件</param
        /// <returns数据列表</returns
        public List<TEntity> Query(string strWhere)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList());
            return _db.Queryable<TEntity>().WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList();
        }

        /// <summary
        /// 功能描述:查询数据列表
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="whereExpression"whereExpression</param
        /// <returns数据列表</returns
        public List<TEntity> Query(Expression<Func<TEntity, bool>> whereExpression)
        {
            return _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).ToList();
        }

        /// <summary
        /// 功能描述:按照特定列查询数据列表
        /// 作　　者:Admin.Core
        /// </summary
        /// <typeparam name="TResult"</typeparam
        /// <param name="expression"</param
        /// <returns</returns
        public List<TResult> Query<TResult>(Expression<Func<TEntity, TResult>> expression)
        {
            return _db.Queryable<TEntity>().Select(expression).ToList();
        }

        /// <summary
        /// 功能描述:按照特定列查询数据列表带条件排序
        /// 作　　者:Admin.Core
        /// </summary
        /// <typeparam name="TResult"</typeparam
        /// <param name="whereExpression"过滤条件</param
        /// <param name="expression"查询实体条件</param
        /// <param name="strOrderByFileds"排序条件</param
        /// <returns</returns
        public List<TResult> Query<TResult>(Expression<Func<TEntity, TResult>> expression, Expression<Func<TEntity, bool>> whereExpression, string strOrderByFileds)
        {
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Select(expression).ToList();
        }

        /// <summary
        /// 功能描述:查询一个列表
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="whereExpression"条件表达式</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(Expression<Func<TEntity, bool>> whereExpression, string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToList());
            return _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).OrderByIF(strOrderByFileds != null, strOrderByFileds).ToList();
        }
        /// <summary
        /// 功能描述:查询一个列表
        /// </summary
        /// <param name="whereExpression"</param
        /// <param name="orderByExpression"</param
        /// <param name="isAsc"</param
        /// <returns</returns
        public List<TEntity> Query(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, object>> orderByExpression, bool isAsc = true)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(orderByExpression != null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc).WhereIF(whereExpression != null, whereExpression).ToList());
            return _db.Queryable<TEntity>().OrderByIF(orderByExpression != null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc).WhereIF(whereExpression != null, whereExpression).ToList();
        }

        /// <summary
        /// 功能描述:查询一个列表
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="strWhere"条件</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(string strWhere, string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList());
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToList();
        }


        /// <summary
        /// 功能描述:查询前N条数据
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="whereExpression"条件表达式</param
        /// <param name="intTop"前N条</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(
            Expression<Func<TEntity, bool>> whereExpression,
            int intTop,
            string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Take(intTop).ToList());
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).Take(intTop).ToList();
        }

        /// <summary
        /// 功能描述:查询前N条数据
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="strWhere"条件</param
        /// <param name="intTop"前N条</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(
            string strWhere,
            int intTop,
            string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).Take(intTop).ToList());
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).Take(intTop).ToList();
        }

        /// <summary
        /// 根据sql语句查询
        /// </summary
        /// <param name="strSql"完整的sql语句</param
        /// <param name="parameters"参数</param
        /// <returns泛型集合</returns
        public List<TEntity> QuerySql(string strSql, SugarParameter[] parameters = null)
        {
            return _db.Ado.SqlQuery<TEntity>(strSql, parameters);
        }

        /// <summary
        /// 执行sql语句
        /// </summary
        /// <param name="strSql"完整的sql语句</param
        /// <param name="parameters"参数</param
        /// <returns泛型集合</returns
        public int ExecSql(string strSql, SugarParameter[] parameters = null)
        {
            return _db.Ado.ExecuteCommand(strSql, parameters);
        }

        /// <summary
        /// 根据sql语句查询
        /// </summary
        /// <param name="strSql"完整的sql语句</param
        /// <param name="parameters"参数</param
        /// <returnsDataTable</returns
        public DataTable QueryTable(string strSql, SugarParameter[] parameters = null)
        {
            return _db.Ado.GetDataTable(strSql, parameters);
        }

        /// <summary
        /// 功能描述:分页查询
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="whereExpression"条件表达式</param
        /// <param name="intPageIndex"页码（下标0）</param
        /// <param name="intPageSize"页大小</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(
            Expression<Func<TEntity, bool>> whereExpression,
            int intPageIndex,
            int intPageSize,
            string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToPageList(intPageIndex, intPageSize));
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(whereExpression != null, whereExpression).ToPageList(intPageIndex, intPageSize);
        }

        /// <summary
        /// 功能描述:分页查询
        /// 作　　者:Admin.Core
        /// </summary
        /// <param name="strWhere"条件</param
        /// <param name="intPageIndex"页码（下标0）</param
        /// <param name="intPageSize"页大小</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns数据列表</returns
        public List<TEntity> Query(
          string strWhere,
          int intPageIndex,
          int intPageSize,

          string strOrderByFileds)
        {
            //return  Task.Run(() = _db.Queryable<TEntity().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToPageList(intPageIndex, intPageSize));
            return _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds).WhereIF(!string.IsNullOrEmpty(strWhere), strWhere).ToPageList(intPageIndex, intPageSize);
        }



        /// <summary
        /// 分页查询[使用版本，其他分页未测试]
        /// </summary
        /// <param name="whereExpression"条件表达式</param
        /// <param name="intPageIndex"页码（下标0）</param
        /// <param name="intPageSize"页大小</param
        /// <param name="strOrderByFileds"排序字段，如name asc,age desc</param
        /// <returns</returns
        public PageModel<TEntity> QueryPage(Expression<Func<TEntity, bool>> whereExpression, int intPageIndex = 1, int intPageSize = 20, string strOrderByFileds = null)
        {

            int totalCount = 0;
            var list = _db.Queryable<TEntity>()
     .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
     .WhereIF(whereExpression != null, whereExpression)
     .ToPageList(intPageIndex, intPageSize, ref totalCount);

            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TEntity>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }


        /// <summary 
        ///查询-多表查询
        /// </summary 
        /// <typeparam name="T"实体1</typeparam 
        /// <typeparam name="T2"实体2</typeparam 
        /// <typeparam name="T3"实体3</typeparam
        /// <typeparam name="TResult"返回对象</typeparam
        /// <param name="joinExpression"关联表达式 (join1,join2) = new object[] {JoinType.Left,join1.UserNo==join2.UserNo}</param 
        /// <param name="selectExpression"返回表达式 (s1, s2) = new { Id =s1.UserNo, Id1 = s2.UserNo}</param
        /// <param name="whereLambda"查询表达式 (w1, w2) =w1.UserNo == "")</param 
        /// <returns值</returns
        public List<TResult> QueryMuch<T, T2, T3, TResult>(
            Expression<Func<T, T2, T3, object[]>> joinExpression,
            Expression<Func<T, T2, T3, TResult>> selectExpression,
            Expression<Func<T, T2, T3, bool>> whereLambda = null) where T : class, new()
        {
            if (whereLambda == null)
            {
                return _db.Queryable(joinExpression).Select(selectExpression).ToList();
            }
            return _db.Queryable(joinExpression).Where(whereLambda).Select(selectExpression).ToList();
        }


        /// <summary
        /// 两表联合查询-分页
        /// </summary
        /// <typeparam name="T"实体1</typeparam
        /// <typeparam name="T2"实体1</typeparam
        /// <typeparam name="TResult"返回对象</typeparam
        /// <param name="joinExpression"关联表达式</param
        /// <param name="selectExpression"返回表达式</param
        /// <param name="whereExpression"查询表达式</param
        /// <param name="intPageIndex"页码</param
        /// <param name="intPageSize"页大小</param
        /// <param name="strOrderByFileds"排序字段</param
        /// <returns</returns
        public PageModel<TResult> QueryTabsPage<T, T2, TResult>(
            Expression<Func<T, T2, object[]>> joinExpression,
            Expression<Func<T, T2, TResult>> selectExpression,
            Expression<Func<TResult, bool>> whereExpression,
            int intPageIndex = 1,
            int intPageSize = 20,
            string strOrderByFileds = null)
        {

            int totalCount = 0;
            var list = _db.Queryable<T, T2>(joinExpression)
                     .Select(selectExpression)
                     .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
                     .WhereIF(whereExpression != null, whereExpression)
                     .ToPageList(intPageIndex, intPageSize, ref totalCount);
            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TResult>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }

        /// <summary
        /// 两表联合查询-分页-分组
        /// </summary
        /// <typeparam name="T"实体1</typeparam
        /// <typeparam name="T2"实体1</typeparam
        /// <typeparam name="TResult"返回对象</typeparam
        /// <param name="joinExpression"关联表达式</param
        /// <param name="selectExpression"返回表达式</param
        /// <param name="whereExpression"查询表达式</param
        /// <param name="intPageIndex"页码</param
        /// <param name="intPageSize"页大小</param
        /// <param name="strOrderByFileds"排序字段</param
        /// <returns</returns
        public PageModel<TResult> QueryTabsPage<T, T2, TResult>(
            Expression<Func<T, T2, object[]>> joinExpression,
            Expression<Func<T, T2, TResult>> selectExpression,
            Expression<Func<TResult, bool>> whereExpression,
            Expression<Func<T, object>> groupExpression,
            int intPageIndex = 1,
                    int intPageSize = 20,
                    string strOrderByFileds = null)
        {

            int totalCount = 0;
            var list = _db.Queryable<T, T2>(joinExpression).GroupBy(groupExpression)
             .Select(selectExpression)
             .OrderByIF(!string.IsNullOrEmpty(strOrderByFileds), strOrderByFileds)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageList(intPageIndex, intPageSize,ref totalCount);
            int pageCount = (Math.Ceiling(totalCount.ObjToDecimal() / intPageSize.ObjToDecimal())).ObjToInt();
            return new PageModel<TResult>() { dataCount = totalCount, pageCount = pageCount, page = intPageIndex, pageSize = intPageSize, data = list };
        }

        #endregion

    }

}