using EntrustSettle.IRepository.Base;
using EntrustSettle.Model;
using EntrustSettle.Repository.UnitOfWorks;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq.Expressions;
using System.Reflection;
using System.Threading.Tasks;

namespace EntrustSettle.Repository.Base
{
    public class BaseRepository<TEntity> : IBaseRepository<TEntity> where TEntity : class, new()
    {
        private readonly IUnitOfWorkManage _unitOfWorkManage;
        private readonly SqlSugarScope _dbBase;
        private ISqlSugarClient _db
        {
            get
            {
                ISqlSugarClient db = _dbBase;

                //参考 https://www.donet5.com/Home/Doc?typeId=2246
                var tenantAttr = typeof(TEntity).GetCustomAttribute<TenantAttribute>();
                if (tenantAttr != null)
                {
                    //统一处理 configId 小写
                    db = _dbBase.GetConnectionScope(tenantAttr.configId.ToString().ToLower());
                    return db;
                }

                return db;
            }
        }
        public ISqlSugarClient Db => _db;

        public BaseRepository(IUnitOfWorkManage unitOfWorkManage)
        {
            _unitOfWorkManage = unitOfWorkManage;
            _dbBase = unitOfWorkManage.GetDbClient();
        }

        #region 查询
        public async Task<TEntity> QueryById(object objId)
        {
            return await _db.Queryable<TEntity>().In(objId).SingleAsync();
        }
        public async Task<TEntity> QueryById(object objId, bool blnUseCache = false)
        {
            return await _db.Queryable<TEntity>().WithCacheIF(blnUseCache, 10).In(objId).SingleAsync();
        }
        public async Task<List<TEntity>> QueryByIDs(object[] lstIds)
        {
            return await _db.Queryable<TEntity>().In(lstIds).ToListAsync();
        }
        public async Task<TEntity> QueryFirst(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await _db.Queryable<TEntity>().Where(whereExpression).FirstAsync();
        }
        public async Task<TResult> QueryFirst<TResult>(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, TResult>> selectExpression)
        {
            return await _db.Queryable<TEntity>().Where(whereExpression).Select(selectExpression).FirstAsync();
        }
        public async Task<TEntity> QueryFirstInclude<TReturn>(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, List<TReturn>>> include)
        {
            return await _db.Queryable<TEntity>().Includes(include).Where(whereExpression).FirstAsync();
        }
        public async Task<List<TEntity>> Query()
        {
            return await _db.Queryable<TEntity>().ToListAsync();
        }
        public async Task<List<TEntity>> Query(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).ToListAsync();
        }
        public async Task<List<TResult>> Query<TResult>(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, TResult>> selectExpression)
        {
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression).Select(selectExpression).ToListAsync();
        }
        public async Task<List<TEntity>> Query(Expression<Func<TEntity, bool>> whereExpression, Expression<Func<TEntity, object>> orderByExpression, bool isAsc = true)
        {
            return await _db.Queryable<TEntity>()
                            .OrderByIF(orderByExpression != null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc)
                            .WhereIF(whereExpression != null, whereExpression).ToListAsync();
        }
        public async Task<List<TEntity>> Query(Expression<Func<TEntity, bool>> whereExpression, string orderByFields)
        {
            return await _db.Queryable<TEntity>().WhereIF(whereExpression != null, whereExpression)
                            .OrderByIF(orderByFields != null, orderByFields).ToListAsync();
        }
        public async Task<List<TEntity>> Query(string where, string orderByFields)
        {
            return await _db.Queryable<TEntity>().OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                            .WhereIF(!string.IsNullOrEmpty(where), where).ToListAsync();
        }
        public async Task<List<TEntity>> QueryTop(Expression<Func<TEntity, bool>> whereExpression, int top, string orderByFields)
        {
            return await _db.Queryable<TEntity>()
                            .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                            .WhereIF(whereExpression != null, whereExpression)
                            .Take(top)
                            .ToListAsync();
        }
        public async Task<List<TEntity>> QueryTop(string where, int top, string orderByFields)
        {
            return await _db.Queryable<TEntity>()
                            .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                            .WhereIF(!string.IsNullOrEmpty(where), where)
                            .Take(top)
                            .ToListAsync();
        }
        public async Task<List<TEntity>> QueryPage(Expression<Func<TEntity, bool>> whereExpression, int pageIndex, int pageSize, string orderByFields)
        {
            return await _db.Queryable<TEntity>()
                            .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                            .WhereIF(whereExpression != null, whereExpression)
                            .ToPageListAsync(pageIndex, pageSize);
        }
        public async Task<List<TEntity>> QueryPage(string where, int pageIndex, int pageSize, string orderByFields)
        {
            return await _db.Queryable<TEntity>()
                            .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                            .WhereIF(!string.IsNullOrEmpty(where), where)
                            .ToPageListAsync(pageIndex, pageSize);
        }
        public async Task<PageModel<TEntity>> QueryPageModel(Expression<Func<TEntity, bool>> whereExpression, int pageIndex = 1, int pageSize = 20, Expression<Func<TEntity, object>> orderByExpression = null, bool isAsc = true)
        {
            RefAsync<int> totalCount = 0;
            List<TEntity> list = await _db.Queryable<TEntity>()
                                          .OrderByIF(orderByExpression is not null, orderByExpression, isAsc ? OrderByType.Asc : OrderByType.Desc)
                                          .WhereIF(whereExpression != null, whereExpression)
                                          .ToPageListAsync(pageIndex, pageSize, totalCount);

            return new PageModel<TEntity>(pageIndex, totalCount, pageSize, list);
        }
        public async Task<PageModel<TEntity>> QueryPageModel(Expression<Func<TEntity, bool>> whereExpression, int pageIndex = 1, int pageSize = 20, string orderByFields = null)
        {
            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<TEntity>()
                                .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                                .WhereIF(whereExpression != null, whereExpression)
                                .ToPageListAsync(pageIndex, pageSize, totalCount);

            return new PageModel<TEntity>(pageIndex, totalCount, pageSize, list);
        }
       
        public async Task<List<TEntity>> QuerySql(string sql, SugarParameter[] parameters = null)
        {
            return await _db.Ado.SqlQueryAsync<TEntity>(sql, parameters);
        }
        public async Task<DataTable> QueryTable(string sql, SugarParameter[] parameters = null)
        {
            return await _db.Ado.GetDataTableAsync(sql, parameters);
        }

        #endregion


        #region 新增
        public async Task<long> Add(TEntity entity)
        {
            var insert = _db.Insertable(entity);
            return await insert.ExecuteReturnSnowflakeIdAsync();

            //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();
        }
        public async Task<List<long>> Add(List<TEntity> listEntity)
        {
            return await _db.Insertable(listEntity.ToArray()).ExecuteReturnSnowflakeIdListAsync();
        }
        #endregion


        #region 删除
        public async Task<bool> Delete(Expression<Func<TEntity, bool>> whereExpression)
        {
            return await _db.Deleteable(whereExpression).ExecuteCommandHasChangeAsync();
        }

        public async Task<bool> Delete(TEntity entity)
        {
            return await _db.Deleteable(entity).ExecuteCommandHasChangeAsync();
        }
        public async Task<bool> DeleteById(object id)
        {
            return await _db.Deleteable<TEntity>().In(id).ExecuteCommandHasChangeAsync();
        }
        public async Task<bool> DeleteByIds(object[] ids)
        {
            return await _db.Deleteable<TEntity>().In(ids).ExecuteCommandHasChangeAsync();
        }
        #endregion


        #region 更新
        public async Task<bool> Update(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> Update(TEntity entity, Expression<Func<TEntity, object>> updateColumns)
        {
            return await _db.Updateable(entity).UpdateColumns(updateColumns, true).ExecuteCommandHasChangeAsync();
        }
        public async Task<bool> Update(List<TEntity> entity)
        {
            return await _db.Updateable(entity).ExecuteCommandHasChangeAsync();
        }
        public async Task<bool> Update(TEntity entity, string where)
        {
            return await _db.Updateable(entity).Where(where).ExecuteCommandHasChangeAsync();
        }

        public async Task<bool> Update(TEntity entity, List<string> lstColumns = null, List<string> lstIgnoreColumns = null, string where = "")
        {
            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(), true);
            }

            if (!string.IsNullOrEmpty(where))
            {
                up = up.Where(where);
            }

            return await up.ExecuteCommandHasChangeAsync();
        }

        public async Task<bool> Update(Expression<Func<TEntity, TEntity>> columns, Expression<Func<TEntity, bool>> where)
        {
            return await _db.Updateable<TEntity>()
                            .SetColumns(columns)
                            .Where(where)
                            .ExecuteCommandHasChangeAsync();
        }
        #endregion


        #region Split分表基础接口 （基础CRUD）
        /// <summary>
        /// 分页查询
        /// </summary>
        public async Task<PageModel<TEntity>> QueryPageSplit(Expression<Func<TEntity, bool>> whereExpression, DateTime beginTime, DateTime endTime, int pageIndex = 1, int pageSize = 20, string orderByFields = null)
        {
            RefAsync<int> totalCount = 0;
            var list = await _db.Queryable<TEntity>().SplitTable(beginTime, endTime)
                .OrderByIF(!string.IsNullOrEmpty(orderByFields), orderByFields)
                .WhereIF(whereExpression != null, whereExpression)
                .ToPageListAsync(pageIndex, pageSize, totalCount);
            var data = new PageModel<TEntity>(pageIndex, totalCount, pageSize, list);
            return data;
        }

        /// <summary>
        /// 写入实体数据
        /// </summary>
        public async Task<List<long>> AddSplit(TEntity entity)
        {
            var insert = _db.Insertable(entity).SplitTable();
            //插入并返回雪花ID并且自动赋值ID　
            return await insert.ExecuteReturnSnowflakeIdListAsync();
        }

        /// <summary>
        /// 更新实体数据
        /// </summary>
        public async Task<bool> UpdateSplit(TEntity entity, DateTime dateTime)
        {
            //直接根据实体集合更新 （全自动 找表更新）
            //return await _db.Updateable(entity).SplitTable().ExecuteCommandAsync();//,SplitTable不能少

            //精准找单个表
            var tableName = _db.SplitHelper<TEntity>().GetTableName(dateTime); //根据时间获取表名
            return await _db.Updateable(entity).AS(tableName).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 删除数据
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="dateTime"></param>
        /// <returns></returns>
        public async Task<bool> DeleteSplit(TEntity entity, DateTime dateTime)
        {
            ////直接根据实体集合删除 （全自动 找表插入）,返回受影响数
            //return await _db.Deleteable(entity).SplitTable().ExecuteCommandAsync();//,SplitTable不能少

            //精准找单个表
            var tableName = _db.SplitHelper<TEntity>().GetTableName(dateTime); //根据时间获取表名
            return await _db.Deleteable<TEntity>().AS(tableName).Where(entity).ExecuteCommandHasChangeAsync();
        }

        /// <summary>
        /// 根据ID查找数据
        /// </summary>
        /// <param name="objId"></param>
        /// <returns></returns>
        public async Task<TEntity> QueryByIdSplit(object objId)
        {
            return await _db.Queryable<TEntity>().In(objId).SplitTable(tabs => tabs).SingleAsync();
        }


        #endregion
    }
}