using learun.util;
using System.Collections.Generic;
using System.Data;
using System.Threading.Tasks;

namespace learun.database
{
	/// <summary>
	/// 版 本 EasyCode EC管理后台
	/// Copyright (c) 2019-present EC管理有限公司
	/// 创建人：tobin
	/// 日 期：2019.09.05
	/// 描 述：数据库接口类
	/// </summary>
	public interface IDataBase
	{
		#region 事务

		/// <summary>
		/// 开启事务
		/// </summary>
		/// <returns></returns>
		IDataBase BeginTrans();

		/// <summary>
		/// 提交
		/// </summary>
		/// <returns></returns>
		void Commit();

		/// <summary>
		/// 回滚
		/// </summary>
		void Rollback();

		/// <summary>
		/// 关闭
		/// </summary>
		void Close();

		#endregion 事务

		#region 执行sql语句

		/// <summary>
		/// 执行sql语句(带参数)
		/// </summary>
		/// <param name="strSql">sql语句</param>
		/// <param name="param">参数</param>
		/// <returns></returns>
		Task<int> ExecuteSql(string strSql, object param = null);

		#endregion 执行sql语句

		#region 执行存储过程

		/// <summary>
		/// 执行存储过程
		/// </summary>
		/// <param name="procName">存储过程名称</param>
		/// <param name="param">参数</param>
		/// <returns></returns>
		Task<int> ExecuteProc(string procName, object param = null);

		/// <summary>
		/// 执行存储过程(查询实体数据)
		/// </summary>
		/// <param name="procName">存储过程名称</param>
		/// <param name="param">参数</param>
		/// <returns></returns>
		Task<T> ExecuteProc<T>(string procName, object param = null) where T : class;

		/// <summary>
		/// 执行存储过程(查询实体数据)
		/// </summary>
		/// <returns></returns>
		/// <param name="procName">存储过程名称.</param>
		/// <param name="param">参数</param>
		Task<dynamic> QueryFirstProc(string procName, object param = null);

		/// <summary>
		/// 执行存储过程(获取列表数据)
		/// </summary>
		/// <param name="procName">存储过程名称</param>
		/// <param name="param">参数</param>
		/// <returns></returns>
		Task<IEnumerable<T>> QueryProc<T>(string procName, object param = null) where T : class;

		/// <summary>
		/// 执行存储过程(获取列表数据)
		/// </summary>
		/// <param name="procName">存储过程名称</param>
		/// <param name="param">参数</param>
		/// <returns></returns>
		Task<IEnumerable<dynamic>> QueryProc(string procName, object param = null);

		#endregion 执行存储过程

		#region 对像实体 新增/修改/删除

		/// <summary>
		/// 插入实体数据
		/// </summary>
		/// <typeparam name="T">类型</typeparam>
		/// <param name="entity">实体数据</param>
		/// <returns></returns>
		Task<int> Insert<T>(T entity) where T : class;

		/// <summary>
		/// 更新实体数据
		/// </summary>
		/// <returns></returns>
		/// <param name="entity">实体数据</param>
		/// <param name="isOnlyHasValue">是否只更新有值的字段</param>
		/// <typeparam name="T">类型</typeparam>
		Task<int> Update<T>(T entity, bool isOnlyHasValue = false) where T : class;

		/// <summary>
		/// 删除实体数据
		/// </summary>
		/// <returns></returns>
		/// <param name="entity">实体数据</param>
		/// <typeparam name="T">类型</typeparam>
		Task<int> Delete<T>(T entity) where T : class;

		/// <summary>
		/// 删除数据根据给定的字段值
		/// </summary>
		/// <returns></returns>
		/// <param name="param">参数</param>
		/// <typeparam name="T">类型</typeparam>
		Task<int> DeleteAny<T>(object param) where T : class;

		#endregion 对像实体 新增/修改/删除

		#region 对象实体查询

		/// <summary>
		/// 获取单个实体数据
		/// </summary>
		/// <returns>单个实体数据</returns>
		/// <param name="keyValue">主键</param>
		/// <typeparam name="T">类</typeparam>
		Task<T> FindEntityByKey<T>(object keyValue) where T : class;

		/// <summary>
		/// 获取单个实体数据
		/// </summary>
		/// <returns>单个实体数据</returns>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <typeparam name="T">类</typeparam>
		Task<T> FindEntity<T>(string sql, object param = null) where T : class;

		/// <summary>
		/// 获取单个实体数据
		/// </summary>
		/// <returns>单个实体数据</returns>
		/// <param name="param">参数</param>
		/// <typeparam name="T">类</typeparam>
		Task<T> FindEntity<T>(object param = null) where T : class;

		/// <summary>
		/// 获取单个实体数据
		/// </summary>
		/// <returns>单个实体数据</returns>
		/// <param name="sql">sql语句.</param>
		/// <param name="param">参数.</param>
		Task<dynamic> FindEntity(string sql, object param = null);

		/// <summary>
		/// 获取数据列表
		/// </summary>
		/// <returns>列表数据</returns>
		/// <param name="sql">sql语句.</param>
		/// <param name="param">参数.</param>
		/// <typeparam name="T">类型.</typeparam>
		Task<IEnumerable<T>> FindList<T>(string sql, object param = null) where T : class;

		/// <summary>
		/// 获取数据列表
		/// </summary>
		/// <returns>列表数据</returns>
		/// <param name="param">参数.</param>
		/// <typeparam name="T">类型.</typeparam>
		Task<IEnumerable<T>> FindList<T>(object param) where T : class;

		/// <summary>
		/// 获取数据列表
		/// </summary>
		/// <returns>列表数据</returns>
		/// <param name="sql">sql语句.</param>
		/// <param name="param">参数.</param>
		Task<IEnumerable<dynamic>> FindList(string sql, object param = null);

		/// <summary>
		/// 获取数据列表（分页）
		/// </summary>
		/// <returns>列表数据</returns>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="orderField">排序字段</param>
		/// <param name="isAsc">排序类型</param>
		/// <param name="pageSize">每页数据条数</param>
		/// <param name="pageIndex">页码</param>
		/// <typeparam name="T">类</typeparam>
		Task<(IEnumerable<T> list, int total)> FindList<T>(string sql, object param, string orderField, bool isAsc, int pageSize, int pageIndex) where T : class;

		/// <summary>
		/// 获取数据列表（分页）
		/// </summary>
		/// <typeparam name="T">类</typeparam>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="pagination">分页参数</param>
		/// <returns></returns>
		Task<IEnumerable<T>> FindList<T>(string sql, object param, Pagination pagination) where T : class;

		/// <summary>
		/// 获取数据列表（分页）
		/// </summary>
		/// <returns>列表数据</returns>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="orderField">排序字段</param>
		/// <param name="isAsc">排序类型</param>
		/// <param name="pageSize">每页数据条数</param>
		/// <param name="pageIndex">页码</param>
		Task<(IEnumerable<dynamic> list, int total)> FindList(string sql, object param, string orderField, bool isAsc, int pageSize, int pageIndex);

		/// <summary>
		/// 获取数据列表（分页）
		/// </summary>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="pagination">分页参数</param>
		/// <returns></returns>
		Task<IEnumerable<dynamic>> FindList(string sql, object param, Pagination pagination);

		/// <summary>
		/// 获取表的所有数据
		/// </summary>
		/// <returns>列表数据</returns>
		/// <typeparam name="T">类</typeparam>
		Task<IEnumerable<T>> FindAll<T>() where T : class;

		#endregion 对象实体查询

		#region 数据源查询

		/// <summary>
		/// 查询方法，返回datatable
		/// </summary>
		/// <returns>datatable数据</returns>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		Task<DataTable> FindTable(string sql, object param = null);

		/// <summary>
		/// 分页查询方法，返回datatable
		/// </summary>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="orderField">排序字段</param>
		/// <param name="isAsc">排序类型</param>
		/// <param name="pageSize">每页数据条数</param>
		/// <param name="pageIndex">页码</param>
		/// <returns>list数据,total 总共条数</returns>
		Task<(DataTable list, int total)> FindTable(string sql, object param, string orderField, bool isAsc, int pageSize, int pageIndex);

		/// <summary>
		/// 分页查询方法，返回datatable
		/// </summary>
		/// <param name="sql">sql语句</param>
		/// <param name="param">参数</param>
		/// <param name="pagination">分页参数</param>
		/// <returns></returns>
		Task<DataTable> FindTable(string sql, object param, Pagination pagination);

		#endregion 数据源查询

		#region 获取数据库表信息

		/// <summary>
		/// 获取数据库表信息
		/// </summary>
		/// <returns>数据库表信息</returns>
		Task<IEnumerable<dynamic>> GetDataBaseTable();

		/// <summary>
		/// 获取表的字段信息
		/// </summary>
		/// <returns>表的字段信息</returns>
		/// <param name="tableName">表名</param>
		Task<IEnumerable<dynamic>> GetDataBaseTableFields(string tableName);

		/// <summary>
		/// 获取数据库地址信息
		/// </summary>
		/// <returns>数据库地址信息</returns>
		string GetDataSource();

		/// <summary>
		/// 测试数据库是否能链接成功
		/// </summary>
		/// <returns>The connection.</returns>
		string TestConnection();

		/// <summary>
		/// 获取sql语句的字段
		/// </summary>
		/// <param name="strSql">sql语句</param>
		/// <returns></returns>
		Task<IEnumerable<string>> GetSqlColName(string strSql);

		#endregion 获取数据库表信息
	}
}