// ==UserScript==
// @name         MISC29Test
// @namespace      http
// @description    Hooks in the AMP removal javascript to attempt to direct to a proper page
// @include        *://*/*
// @run-at document-end
// @grant none
// @version 1.4.1b
//
//
//
// Author: B Tasker
// ==/UserScript==

(function() {
    'use strict';

function fuckOffAMP(){
    // Check whether it's AMP html
    var h = document.getElementsByTagName('html');
  	var i = document.getElementsByTagName('iframe');
  
  	var iframenasty = false;
  	var src;
  
  	for (var a=0;a < i.length; a++){
      src = i[a].getAttribute('src');
      if (src.includes('cdn.ampproject.org/')){
        console.log("iFrames.... Fantastic modernisation there google....");
      	iframenasty = true;
        break;
      }
      
    }
  
  
    if (iframenasty || h[0].getAttribute('amp') != null || h[0].getAttribute('âš¡') != null || document.location.href.substr(0,29).toLowerCase() == 'https://www.google.com/amp/s/'){
        console.log("eww vile... trying to redirect");


        // Try and find a canonical link
        eles = document.getElementsByTagName('link');
        for (var i=0; i<eles.length;i++){
            if (eles[i].getAttribute('rel') == 'canonical' && eles[i].getAttribute('rel') != window.location.href.split('#')[0]){
                window.location.href = eles[i].getAttribute('href');
                console.log("Redirecting you to " + eles[i].getAttribute('href'));
                return;
            }
        }

        // If we got this far, there's no canonical :(
        console.log("Sorry, but you're stuck with the sucky version of this page. Maybe search for the proper version?");

        // Build a link to search DuckDuckGo for the page title (to hopefully find the proper version)
        t = document.getElementsByTagName('title')[0];
        qs = encodeURIComponent(t.innerHTML);
        searchurl = 'https://duckduckgo.com/?t=hg&ia=web&q='+qs

        altlink = document.createElement('a');
        altlink.href = searchurl;
        altlink.title = 'Try and find a proper verison of this page';
        altlink.innerHTML = 'Search for a non-AMP version of this page';

        // Drop the link in at the top
        document.body.insertBefore(altlink, document.body.firstChild);
    }else{
        console.log("Doesn't appear to be AMP'd");
    }

}


var b = document.getElementsByTagName('body')[0];
var s = document.createElement('script');
s.setAttribute('type','text/javascript');
s.appendChild(document.createTextNode('('+ fuckOffAMP +')();'))
b.appendChild(s);

})();