using Microsoft.Extensions.Configuration;

namespace StoreHub.KJDWebService.Commons
{
	/// <summary>
	/// 业务配置读取（旧 System.Configuration.ConfigurationManager 迁移）。
	/// 连接串读 ConnectionStrings 节；业务开关读 KJDConfig 节。
	/// 由宿主 Program.cs 在启动时初始化。
	/// </summary>
	public static class KJDConfig
	{
		private static IConfiguration _configuration;

		public static void SetConfiguration(IConfiguration configuration)
		{
			_configuration = configuration;
		}

		/// <summary>读取配置值（对应旧 connectionStrings["key"].ConnectionString）</summary>
		public static string Get(string key)
		{
			if (_configuration == null)
				return null;
			// 优先业务配置节，其次连接串
			var v = _configuration[$"KJDConfig:{key}"];
			if (!string.IsNullOrEmpty(v))
				return v;
			v = _configuration.GetConnectionString(key);
			return v;
		}
	}
}