using EFSecondLevelCache.Core;
using Masuit.LuceneEFCore.SearchEngine.Interfaces;
using Masuit.MyBlogs.Core.Infrastructure.Repository.Interface;
using Masuit.MyBlogs.Core.Infrastructure.Services.Interface;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading.Tasks;

namespace Masuit.MyBlogs.Core.Infrastructure.Services
{
    /// <summary>
    /// 业务层基类
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class BaseService<T> : IBaseService<T> where T : class, new()
    {
        public virtual IBaseRepository<T> BaseDal { get; set; }
        protected readonly ISearchEngine<DataContext> _searchEngine;
        protected readonly ILuceneIndexSearcher _searcher;

        public BaseService(IBaseRepository<T> repository, ISearchEngine<DataContext> searchEngine, ILuceneIndexSearcher searcher)
        {
            BaseDal = repository;
            _searchEngine = searchEngine;
            _searcher = searcher;
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetAll()
        {
            return BaseDal.GetAll();
        }

        /// <summary>
        /// 获取所有实体（不跟踪）
        /// </summary>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetAllNoTracking()
        {
            return BaseDal.GetAllNoTracking();
        }

        /// <summary>
        /// 从二级缓存获取所有实体
        /// </summary>
        /// <returns>还未执行的SQL语句</returns>
        public virtual EFCachedDbSet<T> GetAllFromCache()
        {
            return BaseDal.GetAllFromCache();
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<TDto> GetAll<TDto>() where TDto : class
        {
            return BaseDal.GetAll<TDto>();
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<TDto> GetAllFromCache<TDto>() where TDto : class
        {
            return BaseDal.GetAllFromCache<TDto>();
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IOrderedQueryable<T> GetAll<TS>(Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetAll(orderby, isAsc);
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IOrderedQueryable<T> GetAllNoTracking<TS>(Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetAllNoTracking(orderby, isAsc);
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<T> GetAllFromCache<TS>(Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetAllFromCache(orderby, isAsc);
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<TDto> GetAll<TS, TDto>(Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.GetAll<TS, TDto>(orderby, isAsc);
        }

        /// <summary>
        /// 获取所有实体
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<TDto> GetAllFromCache<TS, TDto>(Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.GetAllFromCache<TS, TDto>(orderby, isAsc);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetQuery(Expression<Func<T, bool>> @where)
        {
            return BaseDal.GetQuery(where);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        IOrderedQueryable<T> IBaseService<T>.GetQuery<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc)
        {
            return BaseDal.GetQuery(where, orderby, isAsc);
        }

        /// <summary>
        /// 基本查询方法，获取一个被AutoMapper映射后的集合
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<TDto> GetQuery<TDto>(Expression<Func<T, bool>> @where) where TDto : class
        {
            return BaseDal.GetQuery<TDto>(where);
        }

        /// <summary>
        /// 基本查询方法，获取一个被AutoMapper映射后的集合
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <typeparam name="TDto">输出类型</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        /// <returns></returns>
        public virtual IQueryable<TDto> GetQuery<TS, TDto>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.GetQuery<TS, TDto>(where, orderby, isAsc);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合，优先从二级缓存读取
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<T> GetQueryFromCache(Expression<Func<T, bool>> @where)
        {
            return BaseDal.GetQueryFromCache(where);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合，优先从二级缓存读取
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序方式</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<T> GetQueryFromCache<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetQueryFromCache(where, orderby, isAsc);
        }

        /// <summary>
        /// 基本查询方法，获取一个被AutoMapper映射后的集合，优先从二级缓存读取
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<TDto> GetQueryFromCache<TDto>(Expression<Func<T, bool>> @where) where TDto : class
        {
            return BaseDal.GetQueryFromCache<TDto>(where);
        }

        /// <summary>
        /// 基本查询方法，获取一个被AutoMapper映射后的集合，优先从二级缓存读取
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <typeparam name="TDto">输出类型</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序方式</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IEnumerable<TDto> GetQueryFromCache<TS, TDto>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.GetQueryFromCache<TS, TDto>(where, orderby, isAsc);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合（不跟踪实体）
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetQueryNoTracking(Expression<Func<T, bool>> @where)
        {
            return BaseDal.GetQueryNoTracking(where);
        }

        /// <summary>
        /// 基本查询方法，获取一个集合（不跟踪实体）
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序方式</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IOrderedQueryable<T> GetQueryNoTracking<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetQueryNoTracking(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条数据
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public virtual T Get(Expression<Func<T, bool>> @where)
        {
            return BaseDal.Get(where);
        }

        /// <summary>
        /// 获取第一条数据
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public T GetFromCache(Expression<Func<T, bool>> @where)
        {
            return BaseDal.GetFromCache(where);
        }

        /// <summary>
        /// 获取第一条数据
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>实体</returns>
        public virtual T Get<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.Get(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条数据
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>实体</returns>
        public T GetFromCache<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetFromCache(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条被AutoMapper映射后的数据
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public virtual TDto Get<TDto>(Expression<Func<T, bool>> @where) where TDto : class
        {
            return BaseDal.Get<TDto>(where);
        }

        /// <summary>
        /// 获取第一条被AutoMapper映射后的数据
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public TDto GetFromCache<TDto>(Expression<Func<T, bool>> @where) where TDto : class
        {
            return BaseDal.GetFromCache<TDto>(where);
        }

        /// <summary>
        /// 获取第一条被AutoMapper映射后的数据
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>映射实体</returns>
        public virtual TDto Get<TS, TDto>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.Get<TS, TDto>(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条被AutoMapper映射后的数据
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>映射实体</returns>
        public TDto GetFromCache<TS, TDto>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true) where TDto : class
        {
            return BaseDal.GetFromCache<TS, TDto>(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条数据
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>实体</returns>
        public virtual async Task<T> GetAsync<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return await BaseDal.GetAsync(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条数据，优先从缓存读取
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public virtual async Task<T> GetAsync(Expression<Func<T, bool>> @where)
        {
            return await BaseDal.GetAsync(where);
        }

        /// <summary>
        /// 获取第一条数据（不跟踪实体）
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public virtual T GetNoTracking(Expression<Func<T, bool>> @where)
        {
            return BaseDal.GetNoTracking(where);
        }

        /// <summary>
        /// 获取第一条数据（不跟踪实体）
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>实体</returns>
        public virtual T GetNoTracking<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetNoTracking(where, orderby, isAsc);
        }

        /// <summary>
        /// 获取第一条数据（异步，不跟踪实体）
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>实体</returns>
        public virtual async Task<T> GetNoTrackingAsync(Expression<Func<T, bool>> @where)
        {
            return await BaseDal.GetNoTrackingAsync(where);
        }

        /// <summary>
        /// 获取第一条数据（异步，不跟踪实体）
        /// </summary>
        /// <typeparam name="TS">排序</typeparam>
        /// <param name="where">查询条件</param>
        /// <param name="orderby">排序字段</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>实体</returns>
        public virtual async Task<T> GetNoTrackingAsync<TS>(Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return await BaseDal.GetNoTrackingAsync(where, orderby, isAsc);
        }

        /// <summary>
        /// 根据ID找实体
        /// </summary>
        /// <param name="id">实体id</param>
        /// <returns>实体</returns>
        public virtual T GetById(object id)
        {
            return BaseDal.GetById(id);
        }

        /// <summary>
        /// 根据ID找实体(异步)
        /// </summary>
        /// <param name="id">实体id</param>
        /// <returns>实体</returns>
        public virtual async Task<T> GetByIdAsync(object id)
        {
            return await BaseDal.GetByIdAsync(id);
        }

        /// <summary>
        /// 高效分页查询方法
        /// </summary>
        /// <typeparam name="TS"></typeparam>
        /// <param name="pageIndex">第几页</param>
        /// <param name="pageSize">每页大小</param>
        /// <param name="totalCount">数据总数</param>
        /// <param name="where">where Lambda条件表达式</param>
        /// <param name="orderby">orderby Lambda条件表达式</param>
        /// <param name="isAsc">升序降序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetPages<TS>(int pageIndex, int pageSize, out int totalCount, Expression<Func<T, bool>> where, Expression<Func<T, TS>> orderby, bool isAsc = true)
        {
            return BaseDal.GetPages(pageIndex, pageSize, out totalCount, where, orderby, isAsc);
        }

        /// <summary>
        /// 高效分页查询方法，取出被AutoMapper映射后的数据集合
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="pageIndex">第几页</param>
        /// <param name="pageSize">每页大小</param>
        /// <param name="totalCount">数据总数</param>
        /// <param name="where">where Lambda条件表达式</param>
        /// <param name="orderby">orderby Lambda条件表达式</param>
        /// <param name="isAsc">升序降序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<TDto> GetPages<TS, TDto>(int pageIndex, int pageSize, out int totalCount, Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc) where TDto : class
        {
            return BaseDal.GetPages<TS, TDto>(pageIndex, pageSize, out totalCount, where, orderby, isAsc);
        }

        /// <summary>
        /// 高效分页查询方法，优先从二级缓存读取
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <param name="pageIndex">第几页</param>
        /// <param name="pageSize">每页大小</param>
        /// <param name="totalCount">数据总数</param>
        /// <param name="where">where Lambda条件表达式</param>
        /// <param name="orderby">orderby Lambda条件表达式</param>
        /// <param name="isAsc">升序降序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual EFCachedQueryable<T> GetPagesFromCache<TS>(int pageIndex, int pageSize, out int totalCount, Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetPagesFromCache(pageIndex, pageSize, out totalCount, where, orderby, isAsc);
        }

        /// <summary>
        /// 高效分页查询方法，优先从二级缓存读取，取出被AutoMapper映射后的数据集合
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <typeparam name="TDto">映射实体</typeparam>
        /// <param name="pageIndex">第几页</param>
        /// <param name="pageSize">每页大小</param>
        /// <param name="totalCount">数据总数</param>
        /// <param name="where">where Lambda条件表达式</param>
        /// <param name="orderby">orderby Lambda条件表达式</param>
        /// <param name="isAsc">升序降序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual EFCachedQueryable<TDto> GetPagesFromCache<TS, TDto>(int pageIndex, int pageSize, out int totalCount, Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc) where TDto : class
        {
            return BaseDal.GetPagesFromCache<TS, TDto>(pageIndex, pageSize, out totalCount, where, orderby, isAsc);
        }

        /// <summary>
        /// 高效分页查询方法（不跟踪实体）
        /// </summary>
        /// <typeparam name="TS">排序字段</typeparam>
        /// <param name="pageIndex">第几页</param>
        /// <param name="pageSize">每页大小</param>
        /// <param name="totalCount">数据总数</param>
        /// <param name="where">where Lambda条件表达式</param>
        /// <param name="orderby">orderby Lambda条件表达式</param>
        /// <param name="isAsc">升序降序</param>
        /// <returns>还未执行的SQL语句</returns>
        public virtual IQueryable<T> GetPagesNoTracking<TS>(int pageIndex, int pageSize, out int totalCount, Expression<Func<T, bool>> @where, Expression<Func<T, TS>> @orderby, bool isAsc = true)
        {
            return BaseDal.GetPagesNoTracking(pageIndex, pageSize, out totalCount, where, orderby, isAsc);
        }

        /// <summary>
        /// 根据ID删除实体
        /// </summary>
        /// <param name="id">实体id</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteById(object id)
        {
            return BaseDal.DeleteById(id);
        }

        /// <summary>
        /// 根据ID删除实体并保存
        /// </summary>
        /// <param name="id">实体id</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteByIdSaved(object id)
        {
            BaseDal.DeleteById(id);
            return SaveChanges() > 0;
        }

        /// <summary>
        /// 根据ID删除实体并保存（异步）
        /// </summary>
        /// <param name="id">实体id</param>
        /// <returns>删除成功</returns>
        public virtual async Task<int> DeleteByIdSavedAsync(object id)
        {
            BaseDal.DeleteById(id);
            return await SaveChangesAsync();
        }

        /// <summary>
        /// 删除实体并保存
        /// </summary>
        /// <param name="t">需要删除的实体</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteEntity(T t)
        {
            return BaseDal.DeleteEntity(t);
        }

        /// <summary>
        /// 根据条件删除实体
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>删除成功</returns>
        public virtual int DeleteEntity(Expression<Func<T, bool>> @where)
        {
            return BaseDal.DeleteEntity(where);
        }

        /// <summary>
        /// 根据条件删除实体
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>删除成功</returns>
        public virtual int DeleteEntitySaved(Expression<Func<T, bool>> @where)
        {
            BaseDal.DeleteEntity(where);
            return SaveChanges();
        }

        /// <summary>
        /// 根据条件删除实体
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>删除成功</returns>
        public virtual async Task<int> DeleteEntitySavedAsync(Expression<Func<T, bool>> @where)
        {
            BaseDal.DeleteEntity(where);
            return await SaveChangesAsync();
        }

        /// <summary>
        /// 根据条件删除实体（异步）
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>删除成功</returns>
        public virtual async Task<int> DeleteEntityAsync(Expression<Func<T, bool>> @where)
        {
            return await BaseDal.DeleteEntityAsync(where);
        }

        /// <summary>
        /// 删除实体并保存
        /// </summary>
        /// <param name="t">需要删除的实体</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteEntitySaved(T t)
        {
            BaseDal.DeleteEntity(t);
            return SaveChanges() > 0;
        }

        /// <summary>
        /// 删除实体并保存（异步）
        /// </summary>
        /// <param name="t">需要删除的实体</param>
        /// <returns>删除成功</returns>
        public virtual async Task<int> DeleteEntitySavedAsync(T t)
        {
            BaseDal.DeleteEntity(t);
            return await SaveChangesAsync();
        }

        /// <summary>
        /// 添加实体
        /// </summary>
        /// <param name="t">需要添加的实体</param>
        /// <returns>添加成功</returns>
        public virtual T AddEntity(T t)
        {
            return BaseDal.AddEntity(t);
        }

        /// <summary>
        /// 添加实体并保存
        /// </summary>
        /// <param name="t">需要添加的实体</param>
        /// <returns>添加成功</returns>
        public virtual T AddEntitySaved(T t)
        {
            T entity = BaseDal.AddEntity(t);
            bool b = SaveChanges() > 0;
            return b ? entity : null;
        }

        /// <summary>
        /// 添加实体并保存（异步）
        /// </summary>
        /// <param name="t">需要添加的实体</param>
        /// <returns>添加成功</returns>
        public virtual async Task<int> AddEntitySavedAsync(T t)
        {
            BaseDal.AddEntity(t);
            return await SaveChangesAsync();
        }

        /// <summary>
        /// 统一保存的方法
        /// </summary>
        /// <returns>受影响的行数</returns>
        public virtual int SaveChanges()
        {
            return BaseDal.SaveChanges();
        }

        /// <summary>
        /// 统一保存数据
        /// </summary>
        /// <returns>受影响的行数</returns>
        public virtual async Task<int> SaveChangesAsync()
        {
            return await BaseDal.SaveChangesAsync();
        }

        /// <summary>
        /// 判断实体是否在数据库中存在
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns>是否存在</returns>
        public virtual bool Any(Expression<Func<T, bool>> @where)
        {
            return BaseDal.Any(where);
        }

        /// <summary>
        /// 统计符合条件的个数
        /// </summary>
        /// <param name="where">查询条件</param>
        /// <returns></returns>
        public int Count(Expression<Func<T, bool>> @where)
        {
            return BaseDal.Count(where);
        }

        /// <summary>
        /// 删除多个实体
        /// </summary>
        /// <param name="list">实体集合</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteEntities(IEnumerable<T> list)
        {
            return BaseDal.DeleteEntities(list);
        }

        /// <summary>
        /// 删除多个实体并保存
        /// </summary>
        /// <param name="list">实体集合</param>
        /// <returns>删除成功</returns>
        public virtual bool DeleteEntitiesSaved(IEnumerable<T> list)
        {
            BaseDal.DeleteEntities(list);
            return SaveChanges() > 0;
        }

        /// <summary>
        /// 删除多个实体并保存（异步）
        /// </summary>
        /// <param name="list">实体集合</param>
        /// <returns>删除成功</returns>
        public virtual async Task<int> DeleteEntitiesSavedAsync(IEnumerable<T> list)
        {
            BaseDal.DeleteEntities(list);
            return await SaveChangesAsync();
        }

        /// <summary>
        /// 添加多个实体并保存
        /// </summary>
        /// <param name="list">实体集合</param>
        /// <returns>添加成功</returns>
        public virtual IEnumerable<T> AddEntities(IList<T> list)
        {
            IEnumerable<T> entities = BaseDal.AddEntities(list);
            SaveChanges();
            return entities;
        }

        /// <summary>
        /// 添加多个实体并保存（异步）
        /// </summary>
        /// <param name="list">实体集合</param>
        /// <returns>添加成功</returns>
        public virtual async Task<IEnumerable<T>> AddEntitiesAsync(IList<T> list)
        {
            IEnumerable<T> entities = BaseDal.AddEntities(list);
            await SaveChangesAsync();
            return entities;
        }

        /// <summary>
        /// 批量添加实体
        /// </summary>
        /// <param name="list">需要添加的实体</param>
        public virtual void BulkInsert(IEnumerable<T> list)
        {
            BaseDal.BulkInsert(list);
        }

        /// <summary>
        /// 统一批量保存数据
        /// </summary>
        public virtual void BulkSaveChanges()
        {
            BaseDal.BulkSaveChanges();
        }
    }
}