using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Configuration;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace cuidian.Common
{
    public static class ConfigManager
    {
        readonly static bool _Error;

        static Configuration _AppConfig;

        static ConfigManager()
        {
            string dllPath = Process.GetCurrentProcess().MainModule.FileName;
          //  string dllPath = string.Format(
          //      "{0}\\{1}.dll", AppDomain.CurrentDomain.RelativeSearchPath ?? AppDomain.CurrentDomain.BaseDirectory, "MyDemo.Config");

            try
            {
                _AppConfig = ConfigurationManager.OpenExeConfiguration(dllPath);
            }
            catch (ConfigurationErrorsException)
            {
                _Error = true;
            }
        }

        public static KeyValueConfigurationCollection AppSettings
        {
            get
            {
                if (_Error) return null;
                return _AppConfig.AppSettings.Settings;
            }
        }

        public static ConnectionStringSettingsCollection ConnectionStrings
        {
            get
            {
                if (_Error) return null;
                return _AppConfig.ConnectionStrings.ConnectionStrings;
            }
        }

        public static IDictionary GetSection<T>(string name) where T : ConfigurationSection
        {
            if (_Error) return null;
            return _AppConfig.GetSection(name) as IDictionary;
        }

        public static NameValueCollection GetSection(string name)
        {
            NameValueCollection rtn = ConfigurationManager.GetSection(name) as NameValueCollection;

            return rtn;
        }
    }
}