using System;
using Android.Net;
using Android.Net.Wifi;
using Android.OS;

namespace Shared
{   
	public static class WiimuUPnP
	{
		/// <summary>
		/// 获取当前WIFI的名称
		/// </summary>
		/// <value>The ssid.</value>
		public static string SSID
		{
			get
			{
                return getWIFISSID(Shared.Application.Activity);
            }
		}


        /**
             * 获取SSID
             * @param activity 上下文
             * @return  WIFI 的SSID
             */
        static string getWIFISSID(Android.App.Activity activity)
        {
            var ssid = "unknown id";

            if ((int)Build.VERSION.SdkInt <= 26/*8.0*/ || (int)Build.VERSION.SdkInt >= 28/*9.0*/)
            {
                var mWifiManager = (WifiManager)activity.ApplicationContext.GetSystemService(Android.Content.Context.WifiService);

                if (mWifiManager != null)
                {
                    var info = mWifiManager.ConnectionInfo;

                    if ((int)Build.VERSION.SdkInt < 19/*4.4*/)
                    {
                        return info.SSID;
                    }
                    else
                    {
                        return info.SSID.Replace("\"", "");
                    }
                }
            }
            //8.1
            else if ((int)Build.VERSION.SdkInt == 27)
            {
                var connManager = (ConnectivityManager)activity.ApplicationContext.GetSystemService(Android.Content.Context.ConnectivityService);
                if (connManager != null)
                {
                    var networkInfo = connManager.ActiveNetworkInfo;
                    if (networkInfo.IsConnected)
                    {
                        if (networkInfo.ExtraInfo != null)
                        {
                            return networkInfo.ExtraInfo.Replace("\"", "");
                        }
                    }
                }
            }
            return ssid;
        }



        static Action<string> currentAction;
		/// <summary>
		/// 启动配置无线上网
		/// </summary>
		/// <returns>The start.</returns>
		/// <param name="password">密码</param>
		/// <param name="a">配置完成后反馈的结果</param>
        public static void Start(string password,Action<string> action)
		{
			if (SSID == null)
			{
				return;
			}

			Stop();
			dateTime = DateTime.Now;
			currentAction = action;
            action ("TimeOut");
		}

		static WiimuUPnP()
		{
			//定时检查
			System.Threading.Tasks.Task.Run(() =>
			{
				while (true)
				{
					System.Threading.Thread.Sleep(1000);
					if (20 <= (System.DateTime.Now - dateTime).TotalSeconds)
					{
						Stop();
						if (currentAction != null)
						{
							currentAction("TimeOut");
						}
					}
				}
			});
		}

		/// <summary>
		/// 记录开始时间
		/// </summary>
		static DateTime dateTime = DateTime.MaxValue;

		/// <summary>
		/// 停止配置无线上网
		/// </summary>
		public static void Stop()
		{
			dateTime = DateTime.MaxValue;
		}
	}

}