using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WorkFlowApi.IBusiness
{
    public interface IBaseBusiness<T> where T : class, new()
    {
        #region 存在数据
        /// <summary>
        /// 是否存在
        /// </summary>
        /// <param name="entity">实体对象</param>
        /// <param name="field">存在字段</param>
        /// <returns></returns>
        bool Exists(T entity, string field); 
        #endregion

        #region 增加数据

        /// <summary>
        /// 添加数据
        /// </summary>
        /// <param name="entity">实体对象</param>
        int Insert(T entity);
        int InsertExe(T entity);

        /// <summary>
        /// 添加多条数据
        /// </summary>
        /// <param name="entities">实体对象集合</param>
        int InsertList(List<T> entities);
        int InsertListExe(List<T> entities);

        #endregion

        #region 删除数据

        /// <summary>
        /// 删除指定主键数据
        /// </summary>
        /// <param name="key"></param>
        int Delete(string key);
        int DeleteExe(string key, string Field);

        /// <summary>
        /// 通过主键删除多条数据
        /// </summary>
        /// <param name="keys"></param>
        int DeleteList(List<string> keys);

        /// <summary>
        /// 删除单条数据
        /// </summary>
        /// <param name="entity">实体对象</param>
        int DeleteEntity(T entity);

        /// <summary>
        /// 删除多条数据
        /// </summary>
        /// <param name="entities">实体对象集合</param>
        int DeleteEntityList(List<T> entities);

        #endregion

        #region 更新数据

        /// <summary>
        /// 更新一条数据
        /// </summary>
        /// <param name="entity">实体对象</param>
        int Update(T entity);
        int UpdateExe(T entity);

        /// <summary>
        /// 更新多条数据
        /// </summary>
        /// <param name="entities">数据列表</param>
        int UpdateList(List<T> entities);

        #endregion

        #region 查询数据

        /// <summary>
        /// 获取实体
        /// </summary>
        /// <param name="keyValue">主键</param>
        /// <returns></returns>
        T GetEntity(string keyValue);

        /// <summary>
        /// 获取表的所有数据
        /// </summary>
        /// <returns></returns>
        List<T> GetAllList();

        /// <summary>
        /// 查询列表
        /// </summary>
        /// <param name="WhereStr"></param>
        /// <param name="OrderStr"></param>
        /// <returns></returns>
        List<T> GetList(string WhereStr, string OrderStr);

        /// <summary>
        /// 分页列表返回DataTable
        /// </summary>
        /// <param name="WhereStr"></param>
        /// <param name="OrderStr"></param>
        /// <param name="PageSize"></param>
        /// <param name="PageIndex"></param>
        /// <param name="RecordCount"></param>
        /// <returns></returns>
        DataTable GetDataTablePage(string WhereStr, string OrderStr, int PageSize, int PageIndex, out int RecordCount);

        /// <summary>
        /// 分页列表返回List
        /// </summary>
        /// <param name="WhereStr"></param>
        /// <param name="OrderStr"></param>
        /// <param name="PageSize"></param>
        /// <param name="PageIndex"></param>
        /// <param name="RecordCount"></param>
        /// <returns></returns>
        List<T> GetListPage(string WhereStr, string OrderStr, int PageSize, int PageIndex, out int RecordCount);

        #endregion
    }
}