using Infrastructure.Model;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;

namespace ZR.Service
{
    /// <summary>
    /// 基础服务定义
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public interface IBaseService<T> where T : class
    {

        #region 事务

        /// <summary>
        /// 启用事务
        /// </summary>
        void BeginTran();


        /// <summary>
        /// 提交事务
        /// </summary>
        void CommitTran();


        /// <summary>
        /// 回滚事务
        /// </summary>
        void RollbackTran();

        #endregion

        #region 添加操作
        /// <summary>
        /// 添加一条数据
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        int Add(T parm);

        /// <summary>
        /// 批量添加数据
        /// </summary>
        /// <param name="parm">List<T></param>
        /// <returns></returns>
        int Add(List<T> parm);

        /// <summary>
        /// 添加或更新数据
        /// </summary>
        /// <param name="parm"><T></param>
        /// <returns></returns>
        T Saveable(T parm, Expression<Func<T, object>> uClumns = null, Expression<Func<T, object>> iColumns = null);

        /// <summary>
        /// 批量添加或更新数据
        /// </summary>
        /// <param name="parm">List<T></param>
        /// <returns></returns>
        List<T> Saveable(List<T> parm, Expression<Func<T, object>> uClumns = null, Expression<Func<T, object>> iColumns = null);



        #endregion

        #region 查询操作

        /// <summary>
        /// 根据条件查询数据是否存在
        /// </summary>
        /// <param name="where">条件表达式树</param>
        /// <returns></returns>
        bool Any(Expression<Func<T, bool>> where);

        /// <summary>
        /// 根据条件合计字段
        /// </summary>
        /// <param name="where">条件表达式树</param>
        /// <returns></returns>
        TResult Sum<TResult>(Expression<Func<T, bool>> where, Expression<Func<T, TResult>> field);


        /// <summary>
        /// 根据主值查询单条数据
        /// </summary>
        /// <param name="pkValue">主键值</param>
        /// <returns>泛型实体</returns>
        T GetId(object pkValue);


        /// <summary>
        /// 根据主键查询多条数据
        /// </summary>
        /// <param name="ids"></param>
        /// <returns></returns>
        List<T> GetIn(object[] ids);


        /// <summary>
        /// 根据条件取条数
        /// </summary>
        /// <param name="where">条件表达式树</param>
        /// <returns></returns>
        int GetCount(Expression<Func<T, bool>> where);


        /// <summary>
        /// 查询所有数据(无分页,请慎用)
        /// </summary>
        /// <returns></returns>
        List<T> GetAll(bool useCache = false, int cacheSecond = 3600);


        /// <summary>
        /// 获得一条数据
        /// </summary>
        /// <param name="where">Expression<Func<T, bool>></param>
        /// <returns></returns>
        T GetFirst(Expression<Func<T, bool>> where);


        /// <summary>
        /// 获得一条数据
        /// </summary>
        /// <param name="parm">string</param>
        /// <returns></returns>
        T GetFirst(string parm);

        /// <summary>
        /// 根据条件查询分页数据
        /// </summary>
        /// <param name="where"></param>
        /// <param name="parm"></param>
        /// <returns></returns>
        PagedInfo<T> GetPages(Expression<Func<T, bool>> where, Model.PagerInfo parm);

        /// <summary>
        /// 根据条件查询分页
        /// </summary>
        /// <param name="where"></param>
        /// <param name="parm"></param>
        /// <param name="order"></param>
        /// <param name="orderEnum"></param>
        /// <returns></returns>
        PagedInfo<T> GetPages(Expression<Func<T, bool>> where, Model.PagerInfo parm, Expression<Func<T, object>> order, string orderEnum = "Asc");

        /// <summary>
        /// 根据条件查询数据
        /// </summary>
        /// <param name="where">条件表达式树</param>
        /// <returns></returns>
        List<T> GetWhere(Expression<Func<T, bool>> where, bool useCache = false, int cacheSecond = 3600);

        /// <summary>
        /// 根据条件查询数据
        /// </summary>
        /// <param name="where">条件表达式树</param>
        /// <returns></returns>
        List<T> GetWhere(Expression<Func<T, bool>> where, Expression<Func<T, object>> order, string orderEnum = "Asc", bool useCache = false, int cacheSecond = 3600);


        #endregion

        #region 修改操作

        /// <summary>
        /// 修改一条数据
        /// </summary>
        /// <param name="parm">T</param>
        /// <returns></returns>
        int Update(T parm);


        /// <summary>
        /// 批量修改
        /// </summary>
        /// <param name="parm">T</param>
        /// <returns></returns>
        int Update(List<T> parm);


        /// <summary>
        /// 按查询条件更新
        /// </summary>
        /// <param name="where"></param>
        /// <param name="columns"></param>
        /// <returns></returns>
        int Update(Expression<Func<T, bool>> where, Expression<Func<T, T>> columns);


        #endregion

        #region 删除操作

        /// <summary>
        /// 删除一条或多条数据
        /// </summary>
        /// <param name="parm">string</param>
        /// <returns></returns>
        int Delete(object id);


        /// <summary>
        /// 删除一条或多条数据
        /// </summary>
        /// <param name="parm">string</param>
        /// <returns></returns>
        int Delete(object[] ids);

        /// <summary>
        /// 根据条件删除一条或多条数据
        /// </summary>
        /// <param name="where">过滤条件</param>
        /// <returns></returns>
        int Delete(Expression<Func<T, bool>> where);
        
        /// <summary>
        /// 清空表
        /// </summary>
        /// <returns></returns>
        int DeleteTable();
        #endregion

    }
}