using learun.database;
using learun.iapplication;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;

namespace learun.application
{
	/// <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：2019.09.19
	/// 描 述：数据库连接
	/// </summary>
	public class DatabaseLinkService : ServiceBase
	{
		#region 构造函数和属性

		private readonly string fieldSql;

		/// <summary>
		///
		/// </summary>
		public DatabaseLinkService()
		{
			fieldSql = @"
                    t.F_DatabaseLinkId,
                    t.F_ServerAddress,
                    t.F_DBName,
                    t.F_DBAlias,
                    t.F_DbType,
                    t.F_DbConnection,
                    t.F_DESEncrypt,
                    t.F_SortCode,
                    t.F_DeleteMark,
                    t.F_EnabledMark,
                    t.F_Description,
                    t.F_CreateDate,
                    t.F_CreateUserId,
                    t.F_CreateUserName,
                    t.F_ModifyDate,
                    t.F_ModifyUserId,
                    t.F_ModifyUserName
                ";
		}

		#endregion 构造函数和属性

		#region 获取数据

		/// <summary>
		/// 获取数据库信息列表
		/// </summary>
		/// <returns></returns>
		public Task<IEnumerable<DatabaseLinkEntity>> GetList()
		{
			var strSql = new StringBuilder();
			strSql.Append("SELECT ");
			strSql.Append(fieldSql);
			strSql.Append(" FROM LR_Base_DatabaseLink t WHERE  t.F_DeleteMark = 0 ");
			return this.BaseRepository().FindList<DatabaseLinkEntity>(strSql.ToString());
		}

		/// <summary>
		/// 获取实体数据
		/// </summary>
		/// <param name="keyValue">键值</param>
		/// <returns></returns>
		public Task<DatabaseLinkEntity> GetEntity(string keyValue)
		{
			return this.BaseRepository().FindEntityByKey<DatabaseLinkEntity>(keyValue);
		}

		#endregion 获取数据

		#region 提交数据

		/// <summary>
		/// 删除自定义查询条件
		/// </summary>
		/// <param name="keyValue">主键</param>
		public async Task Delete(string keyValue)
		{
			var entity = await GetEntity(keyValue);
			await this.BaseRepository().DeleteAny<DatabaseLinkEntity>(new { F_DatabaseLinkId = keyValue });
			DbCaChe.RemoveValue(entity.F_DBName);
		}

		/// <summary>
		/// 保存自定义查询（新增、修改）
		/// </summary>
		/// <param name="keyValue">主键值</param>
		/// <param name="databaseLinkEntity">数据库实体</param>
		/// <returns></returns>
		public async Task<bool> SaveEntity(string keyValue, DatabaseLinkEntity databaseLinkEntity)
		{
			/*测试数据库连接串"******";*/
			if (!string.IsNullOrEmpty(keyValue) && databaseLinkEntity.F_DbConnection == "******")
			{
				databaseLinkEntity.F_DbConnection = null;// 不更新连接串地址
			}
			else
			{
				try
				{
					databaseLinkEntity.F_ServerAddress = this.BaseRepository(databaseLinkEntity.F_DbConnection, databaseLinkEntity.F_DbType).GetDataSource();
				}
				catch (Exception)
				{
					return false;
				}
			}
			if (!string.IsNullOrEmpty(keyValue))
			{
				databaseLinkEntity.F_DatabaseLinkId = keyValue;
				databaseLinkEntity.F_ModifyDate = DateTime.Now;
				databaseLinkEntity.F_ModifyUserId = this.GetUserId();
				databaseLinkEntity.F_ModifyUserName = this.GetUserName();
				await this.BaseRepository().Update(databaseLinkEntity);
			}
			else
			{
				databaseLinkEntity.F_DatabaseLinkId = Guid.NewGuid().ToString();
				databaseLinkEntity.F_CreateDate = DateTime.Now;
				databaseLinkEntity.F_DeleteMark = 0;
				databaseLinkEntity.F_EnabledMark = 1;
				databaseLinkEntity.F_CreateUserId = this.GetUserId();
				databaseLinkEntity.F_CreateUserName = this.GetUserName();
				await this.BaseRepository().Insert(databaseLinkEntity);
			}
			DbCaChe.RemoveValue(databaseLinkEntity.F_DBName);
			return true;
		}

		#endregion 提交数据

		#region 扩展方法

		/// <summary>
		/// 测试数据数据库是否能连接成功
		/// </summary>
		/// <param name="connection">连接串</param>
		/// <param name="dbType">数据库类型</param>
		public string TestConnection(string connection, string dbType)
		{
			try
			{
				var db = this.BaseRepository(connection, dbType).BeginTrans();
				db.Commit();
				return "success";
			}
			catch (Exception ex)
			{
				return ex.Message;
			}
		}

		#endregion 扩展方法
	}
}