Gazelle/static/functions/detect_mobile.js

var ANDROID_COOKIE_NAME = "mobile_checked_android";
var OTHER_COOKIE_NAME = "mobile_checked_other";
var MOBILE_SITE_URL = "https://m.what.cd/";
var ANDROID_APP_URL = "http://bit.ly/git_wa_stable";

var isMobile = {
    Android: function() {
        return navigator.userAgent.match(/Android/i) ? true : false;
    },
    BlackBerry: function() {
        return navigator.userAgent.match(/BlackBerry/i) ? true : false;
    },
    iOS: function() {
        return navigator.userAgent.match(/iPhone|iPad|iPod/i) ? true : false;
    },
    Windows: function() {
        return navigator.userAgent.match(/IEMobile/i) ? true : false;
    },
    Any: function() {
        return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Windows());
    },
    NotAndroid: function() {
	return (isMobile.BlackBerry() || isMobile.iOS() || isMobile.Windows());
    }
};

if(isMobile.Android()) {
	if(!hasCookie(ANDROID_COOKIE_NAME)) {
		setCookie(ANDROID_COOKIE_NAME, true, 365);
		var result=confirm("An Android App is available for What.CD, would you like to download it?");
		if (result==true) {
  			window.location = ANDROID_APP_URL;
  		}
	}
}

else if(isMobile.NotAndroid()) {
	if(!hasCookie(OTHER_COOKIE_NAME)) {
         	setCookie(OTHER_COOKIE_NAME, true, 365);
                var result=confirm("A mobile version of What.CD is available, would you like to use it?");
                if (result==true) {
			window.location = MOBILE_SITE_URL;
                }
	}
}


function setCookie(c_name,value,exdays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
document.cookie=c_name + "=" + c_value;
}

function getCookie(c_name)
{
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
  x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
  y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
  x=x.replace(/^\s+|\s+$/g,"");
  if (x==c_name)
    {
    return unescape(y);
    }
  }
}


function hasCookie(c_name)
{
var checked=getCookie(c_name);
  if (checked != null)
  {
	return true;
  }
  return false;
}