using jiajie.Model;
using jiajie.Repository.UnitOfWork;
using Microsoft.Extensions.DependencyInjection;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace jiajie.Repository
{
    /// <summary>
    /// 
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    public class BaseRepository<TEntity> : IBaseRepository<TEntity> where TEntity : class, new()
    {
        /// <summary>
        /// 服务提供器
        /// </summary>
        private readonly IServiceProvider _serviceProvider;
        private readonly IUnitOfWork _unitOfWork;
        private readonly SqlSugarScope _dbBase;
        private ISqlSugarClient _db { get { return _dbBase; } }
        public BaseRepository(IUnitOfWork unitOfWork, IServiceProvider serviceProvider)
        {
            _unitOfWork = unitOfWork;
            _dbBase = unitOfWork.GetDbClient();
            _serviceProvider = serviceProvider;
            Ado = unitOfWork.GetDbClient().Ado;
        }
        public ISqlSugarClient Db => _db;

        /// <summary>
        /// 实体集合
        /// </summary>
        public ISugarQueryable<TEntity> Entities => _db.Queryable<TEntity>();

        /// <summary>
        /// 原生 Ado 对象
        /// </summary>
        public IAdo Ado { get; }

        /// <summary>
        /// 切换仓储
        /// </summary>
        /// <typeparam name="TEntity">实体类型</typeparam>
        /// <returns>仓储</returns>
        public IBaseRepository<NewEntity> ChangeRepository<NewEntity>() where NewEntity : class, new()
        {
            return _serviceProvider.GetService<IBaseRepository<NewEntity>>();
        }

        /// <summary>
        /// 获取总数
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<int> CountAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.CountAsync(whereExpression);
        }

        /// <summary>
        /// 检查是否存在
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<bool> AnyAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.AnyAsync(whereExpression);
        }

        /// <summary>
        /// 获取一个实体
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<TEntity> SingleAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.SingleAsync(whereExpression);
        }

        /// <summary>
        /// 获取一个实体
        /// </summary>
        /// <param name="objId"></param>
        /// <returns></returns>
        public async Task<TEntity> SingleByIdAsync(object objId)
        {
            return await Entities.In(objId).SingleAsync();
        }

        /// <summary>
        /// 获取一个实体
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<TEntity> FirstOrDefaultAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.FirstAsync(whereExpression);
        }

        /// <summary>
        /// 获取一个实体 主键
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<TEntity> FirstOrDefaultByIdAsync(object id)
        {
            return await Entities.In(id).FirstAsync();
        }

        /// <summary>
        /// 检查存在
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<bool> IsExistsByIdAsync(object id)
        {
            return await Entities.In(id).AnyAsync();
        }

        /// <summary>
        /// 检查存在
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<bool> IsExistsAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.AnyAsync(whereExpression);
        }


        /// <summary>
        /// 新增一条记录
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        public async Task<int> InsertAsync(TEntity entity)
        {
            return await _db.Insertable(entity).ExecuteCommandAsync();
        }

        /// <summary>
        /// 新增多条记录
        /// </summary>
        /// <param name="entities"></param>
        /// <returns></returns>
        public async Task<int> InsertAsync(params TEntity[] entities)
        {
            return await _db.Insertable(entities).ExecuteCommandAsync();
        }

        /// <summary>
        /// 新增多条记录
        /// </summary>
        /// <param name="entities"></param>
        /// <returns></returns>
        public async Task<int> InsertAsync(IEnumerable<TEntity> entities)
        {
            if (entities != null && entities.Any())
            {
                return await _db.Insertable(entities.ToArray()).ExecuteCommandAsync();
            }
            return await Task.FromResult(0);
        }

        /// <summary>
        /// 新增一条记录返回自增Id
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        public async Task<long> InsertReturnIdentityAsync(TEntity entity)
        {
            return await _db.Insertable(entity).ExecuteReturnBigIdentityAsync();
        }

        /// <summary>
        /// 更新一条记录
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        public async Task<bool> UpdateAsync(TEntity entity)
        {
            return await _db.Updateable(entity).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 无主键更新一条记录
        /// </summary>
        /// <param name="entity">更新的实体</param>
        /// <param name="columns">根据那些字段更新</param>
        /// <returns></returns>
        public async Task<bool> UpdateNoPrimaryKeyAsync(TEntity entity, Expression<Func<TEntity, object>> columns)
        {
            return await _db.Updateable(entity).WhereColumns(columns).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 无主键更新多条记录
        /// </summary>
        /// <param name="entity">更新的实体</param>
        /// <param name="columns">根据那些字段更新</param>
        /// <returns></returns>
        public async Task<bool> UpdateNoPrimaryKeyAsync(List<TEntity> entitys, Expression<Func<TEntity, object>> columns)
        {
            return await _db.Updateable(entitys).WhereColumns(columns).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 更新多条记录
        /// </summary>
        /// <param name="entities"></param>
        /// <returns></returns>
        public async Task<bool> UpdateAsync(params TEntity[] entities)
        {
            return await _db.Updateable(entities).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 更新多条记录
        /// </summary>
        /// <param name="entities"></param>
        /// <returns></returns>
        public async Task<bool> UpdateAsync(IEnumerable<TEntity> entities)
        {
            return await _db.Updateable(entities.ToArray()).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除一条记录
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        public async Task<bool> DeleteAsync(TEntity entity)
        {
            return await _db.Deleteable(entity).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除一条记录
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<bool> DeleteAsync(object key)
        {
            return await _db.Deleteable<TEntity>().In(key).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除多条记录
        /// </summary>
        /// <param name="keys"></param>
        /// <returns></returns>
        public async Task<bool> DeleteAsync(params object[] keys)
        {
            return await _db.Deleteable<TEntity>().In(keys).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 自定义条件删除记录
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<bool> DeleteAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await _db.Deleteable<TEntity>().Where(whereExpression).ExecuteCommandHasChangeAsync();
        }






        /// <summary>
        /// 通过主键查询
        /// </summary>
        /// <param name="lstIds"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryByIDsAsync(object[] lstIds)
        {
            return await Entities.In(lstIds).ToListAsync();
        }

        /// <summary>
        /// 获取列表
        /// </summary>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync()
        {
            return await Entities.ToListAsync();
        }

        /// <summary>
        /// 获取列表
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await Entities.Where(whereExpression).ToListAsync();
        }

        /// <summary>
        /// 获取列表 带排序
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression, string orderByFields)
        {
            return await Entities.WhereIF(whereExpression != null, whereExpression).OrderByIF(orderByFields != null, orderByFields).ToListAsync();
        }

        /// <summary>
        /// 获取列表 带排序
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <param name="orderByExpression"></param>
        /// <param name="orderByType"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, object>> orderByExpression = null, OrderByType orderByType = OrderByType.Asc)
        {
            return await Entities.OrderByIF(orderByExpression != null, orderByExpression, orderByType).Where(whereExpression).ToListAsync();
        }

        /// <summary>
        /// 查询数据列表 带条件
        /// </summary>
        /// <param name="where">条件</param>
        /// <returns>数据列表</returns>
        public async Task<List<TEntity>> QueryAsync(string where)
        {
            return await Entities.WhereIF(!string.IsNullOrEmpty(where), where).ToListAsync();
        }

        /// <summary>
        /// 查询数据列表 带条件 带排序
        /// </summary>
        /// <param name="where"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(string where, string orderByFields)
        {
            return await Entities.OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields).WhereIF(!string.IsNullOrEmpty(where), where).ToListAsync();
        }

        /// <summary>
        /// 查询数据列表 返回指定列
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="expression"></param>
        /// <returns></returns>
        public async Task<List<TResult>> QueryAsync<TResult>(Expression<Func<TEntity, TResult>> expression)
        {
            return await Entities.Select(expression).ToListAsync();
        }

        /// <summary>
        /// 查询数据列表 返回指定列 带条件 带排序
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="expression"></param>
        /// <param name="whereExpression"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<List<TResult>> QueryAsync<TResult>(Expression<Func<TEntity, TResult>> expression, Expression<Func<TEntity, bool>> whereExpression, string orderByFields)
        {
            return await Entities.OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields).WhereIF(whereExpression != null, whereExpression).Select(expression).ToListAsync();
        }

        /// <summary>
        /// 根据sql语句查询
        /// </summary>
        /// <param name="sql">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 sql, SugarParameter[] parameters = null)
        {
            return await _db.Ado.SqlQueryAsync<TEntity>(sql, parameters);
        }

        /// <summary>
        /// 分页查询数据列表
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(
            Expression<Func<TEntity, bool>> whereExpression,
            int pageIndex,
            int pageSize,
            string orderByFields)
        {
            return await Entities.OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                .WhereIF(whereExpression != null, whereExpression).ToPageListAsync(pageIndex, pageSize);
        }

        /// <summary>
        /// 分页查询数据列表
        /// </summary>
        /// <param name="where"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<List<TEntity>> QueryAsync(
            string where,
            int pageIndex,
            int pageSize,
            string orderByFields)
        {
            return await Entities.OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                .WhereIF(!string.IsNullOrEmpty(where), where).ToPageListAsync(pageIndex, pageSize);
        }

        /// <summary>
        /// 分页查询数据列表
        /// </summary>
        /// <param name="whereExpression"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="orderByFields"></param>
        /// <returns></returns>
        public async Task<PageModel<TEntity>> QueryPageAsync(
            Expression<Func<TEntity, bool>> whereExpression, 
            int pageIndex = 1, 
            int pageSize = 20, 
            string orderByFields = null
            )
        {

            RefAsync<int> totalCount = 0;
            var list = await Entities
             .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(pageIndex, pageSize, totalCount);

            return new PageModel<TEntity>(pageIndex, totalCount, pageSize, 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>> 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 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="pageIndex">页码</param>
        /// <param name="pageSize">页大小</param>
        /// <param name="orderByFields">排序字段</param>
        /// <returns></returns>
        public async Task<PageModel<TResult>> QueryTabsPage<T, T2, TResult>(
            Expression<Func<T, T2, object[]>> joinExpression,
            Expression<Func<T, T2, TResult>> selectExpression,
            Expression<Func<TResult, bool>> whereExpression,
            int pageIndex = 1,
            int pageSize = 20,
            string orderByFields = null)
        {

            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<T, T2>(joinExpression)
             .Select(selectExpression)
             .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(pageIndex, pageSize, totalCount);
            return new PageModel<TResult>(pageIndex, totalCount, pageSize, 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="groupExpression">group表达式</param>
        /// <param name="pageIndex">页码</param>
        /// <param name="pageSize">页大小</param>
        /// <param name="orderByFields">排序字段</param>
        /// <returns></returns>
        public async Task<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 pageIndex = 1,
            int pageSize = 20,
            string orderByFields = null)
        {
            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<T, T2>(joinExpression).GroupBy(groupExpression)
             .Select(selectExpression)
             .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
             .WhereIF(whereExpression != null, whereExpression)
             .ToPageListAsync(pageIndex, pageSize, totalCount);
            return new PageModel<TResult>(pageIndex, totalCount, pageSize, list);
        }



        





    }
}