using Autofac;
using ce.autofac.extension;
using learun.util;
using System;

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：2019.09.10
	/// 描 述：定义仓储模型工厂
	/// </summary>
	public class RepositoryFactory
	{
		/// <summary>
		/// 定义仓储（基础库）
		/// </summary>
		/// <returns></returns>
		public IRepository BaseRepository()
		{
			return new Repository(IocManager.Instance.GetService<IDataBase>(ConfigHelper.GetConfig().dbType, new NamedParameter("connString", ConfigHelper.GetConfig().dbConn)));
		}

		/// <summary>
		/// 定义仓储（扩展库）
		/// </summary>
		/// <returns></returns>
		public IRepository BaseRepository(string code)
		{
			if (code == "lrsystemdb")
			{
				return BaseRepository();
			}

			var model = DbCaChe.GetValue(code);
			if (model == null)
			{
				model = BaseRepository().FindEntity<DbModel>(" select F_DBName,F_DbType,F_DbConnection  from lr_base_databaselink where F_DBName = @code ", new { code }).GetAwaiter().GetResult();
				if (model == null)
				{
					throw (new Exception("此编码找不到对应数据库：" + code));
				}
				DbCaChe.SetValue(code, model);
			}

			return new Repository(IocManager.Instance.GetService<IDataBase>(model.F_DbType, new NamedParameter("connString", model.F_DbConnection)));
		}

		/// <summary>
		/// 定义仓储
		/// </summary>
		/// <param name="conn">链接串</param>
		/// <param name="dbType">数据库类型</param>
		/// <returns></returns>
		public IRepository BaseRepository(string conn, string dbType)
		{
			return new Repository(IocManager.Instance.GetService<IDataBase>(dbType, new NamedParameter("connString", conn)));
		}

		/// <summary>
		/// 数据库类型
		/// </summary>
		/// <param name="code"></param>
		/// <returns>SqlServer,Oracle,MySql</returns>
		public string DBType(string code)
		{
			if (code == "lrsystemdb")
			{
				return ConfigHelper.GetConfig().dbType;
			}
			else
			{
				var model = DbCaChe.GetValue(code);
				if (model == null)
				{
					model = BaseRepository().FindEntity<DbModel>(" select F_DBName,F_DbType,F_DbConnection  form lr_base_databaselink where F_DBName = @code ", new { code }).GetAwaiter().GetResult();
					if (model == null)
					{
						throw (new Exception("此编码找不到对应数据库：" + code));
					}
					DbCaChe.SetValue(code, model);
				}

				return model.F_DbType;
			}
		}
	}
}