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

namespace DbHelper
{
    public class DbContext
    {
        private static ConnectionConfig? _config = null;

        public static void SetConfig(ConnectionConfig value)
        {
            _config = value;
        }

        /// <summary>
        /// 用单例模式
        /// </summary>
        private static readonly SqlSugarScope SqlSugarScope = new SqlSugarScope(new ConnectionConfig()
        {
            ConnectionString = _config!.ConnectionString, //连接符字串
            DbType = _config.DbType, //数据库类型
            IsAutoCloseConnection = true //不设成true要手动close
        }, db =>
        {
            //(A)全局生效配置点
            //调试SQL事件，可以删掉
            db.Aop.OnLogExecuting = (sql, pars) =>
            {
                DbLog.DBEX(sql);
                //输出sql,查看执行sql
                //5.0.8.2 获取无参数化 SQL
                //UtilMethods.GetSqlString(DbType.SqlServer,sql,pars)
            };
        });

        /// <summary>
        /// 获取db链接
        /// </summary>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public static SqlSugarScope Db
        {
            get
            {
                if (_config == null) throw new Exception("请使用SetConfig方法写入数据库链接信息");
                return SqlSugarScope;
            }
        }
    }
}