using AUCMA.STORE.Common;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AUCMA.STORE.SqlSugar
{
    public class SqlGenerator
    {
        public static string ConnectionString = ConfigHelper.GetConfig("MesOracleDataSource");
        private static SqlSugarClient sqlSugarClient = null;

        private static readonly object lockHelper = new object();

        /// <summary>
        /// 连接Oracle数据库
        /// </summary>
        /// <returns></returns>
        public static SqlSugarClient GetOracleInstance()
        {
            if (sqlSugarClient == null)
            {
                lock (lockHelper)
                {
                    //此写法，官方不推荐
                    //单例模式，避免多次实例化
                    if (sqlSugarClient == null)
                    {
                        sqlSugarClient = new SqlSugarClient(new ConnectionConfig()
                        {
                            //数据库类型
                            DbType = DbType.Oracle,
                            //数据库连接字符串
                            ConnectionString = ConnectionString,
                            InitKeyType = InitKeyType.Attribute,
                            //是否自动关闭连接
                            IsAutoCloseConnection = true,
                            AopEvents = new AopEvents
                            {
                                //记录执行SQL和参数
                                OnLogExecuting = (sql, p) =>
                                {
                                    //log.Debug(sql);
                                    //Console.WriteLine(sql);
                                }
                            }
                        });
                    }
                }

            }
            return sqlSugarClient;
        }

        //官方建议 不单例 SqlSugarClient 对象 ,在多线程下，可能会引发异常。
        public static SqlSugarClient GetSQLServerInstance()
        {
            return new SqlSugarClient(new ConnectionConfig()
            {
                DbType = DbType.SqlServer,
                ConnectionString = ConnectionString,
                InitKeyType = InitKeyType.Attribute,
                IsAutoCloseConnection = true,
                AopEvents = new AopEvents
                {
                    OnLogExecuting = (sql, p) =>
                    {
                        //log.Debug(sql);
                    }
                }
            });
        }

    }
}