using System.Collections.Specialized;

namespace MQTT_WinformV1
{
    using System.Configuration;

    /// <summary>
    /// 统一配置读取辅助类（
    /// </summary>
    public class AppConfigHelper
    {
        #region 私有字段（宜搭配置集合，仅初始化一次）

        private static readonly NameValueCollection _yiDaConfigCollection;

        #endregion

        #region 静态构造函数（程序启动时执行，加载所有配置，仅执行一次）

        static AppConfigHelper()
        {
            // 初始化宜搭配置集合
            _yiDaConfigCollection = (NameValueCollection)ConfigurationManager.GetSection("YiDaConfig");
            if (_yiDaConfigCollection == null)
            {
                _yiDaConfigCollection = new NameValueCollection();
            }
        }

        #endregion

        #region 数据库配置（MySQL 连接字符串）

        /// <summary>
        /// 获取 MySQL 连接字符串（对应 App.config 中的 MySqlConnection）
        /// </summary>
        public static string MySqlConnectionString
        {
            get
            {
                ConnectionStringSettings connectionSettings = ConfigurationManager.ConnectionStrings["MySqlConnection"];

                // 容错处理：数据库配置缺失抛出明确异常，影响核心功能需提醒
                if (connectionSettings == null || string.IsNullOrEmpty(connectionSettings.ConnectionString))
                {
                    throw new ConfigurationErrorsException("App.config 中未配置有效的 MySqlConnection 连接字符串");
                }

                return connectionSettings.ConnectionString;
            }
        }

        #endregion
        
        #region 钉钉配置
        
        /// <summary>
        /// 钉钉 BaseAddress 地址
        /// </summary>
        public static string DingDing_BaseAddress => GetYiDaConfigValue("DingDingRobotWebHook");

        /// <summary>
        /// 钉钉机器人 WebHook 地址
        /// </summary>
        public static string DingDing_RobotWebHook => GetYiDaConfigValue("DingDingRobotWebHook");

        /// <summary>
        /// 钉钉机器人加签 Secret
        /// </summary>
        public static string DingDing_RobotSecret => GetYiDaConfigValue("DingDingRobotSecret");

        #endregion

        #region 宜搭配置（所有宜搭相关配置项）

        /// <summary>
        /// 宜搭 TokenAppKey
        /// </summary>
        public static string YiDa_TokenAppKey => GetYiDaConfigValue("TokenAppKey");

        /// <summary>
        /// 宜搭 TokenAppSecret
        /// </summary>
        public static string YiDa_TokenAppSecret => GetYiDaConfigValue("TokenAppSecret");

        /// <summary>
        /// 宜搭 AppType
        /// </summary>
        public static string YiDa_AppType => GetYiDaConfigValue("AppType");

        /// <summary>
        /// 宜搭 SystemToken
        /// </summary>
        public static string YiDa_SystemToken => GetYiDaConfigValue("SystemToken");

        /// <summary>
        /// 宜搭 UserId
        /// </summary>
        public static string YiDa_UserId => GetYiDaConfigValue("UserId");

        /// <summary>
        /// 宜搭 FormUuid
        /// </summary>
        public static string YiDa_FormUuid => GetYiDaConfigValue("FormUuid");

        /// <summary>
        /// 宜搭 ProcessCode
        /// </summary>
        public static string YiDa_ProcessCode => GetYiDaConfigValue("ProcessCode");

        #endregion

        #region 私有辅助方法（宜搭配置通用读取）

        /// <summary>
        /// 通用宜搭配置值读取方法（带容错，配置项不存在返回空字符串）
        /// </summary>
        /// <param name="key">配置项的 key</param>
        /// <returns>配置项的值，不存在返回空字符串</returns>
        private static string GetYiDaConfigValue(string key)
        {
            return _yiDaConfigCollection[key] ?? string.Empty;
        }

        #endregion
    }
}