//Change History
function changeHistory(window, location) {
  console.log(`Old History: ${history}`);
	history.replaceState(null, document.title, location.pathname+"#!/history");
	history.pushState(null, document.title, location.pathname);
	window.addEventListener("popstate", function() {
		if(location.hash === "#!/history") {
			history.replaceState(null, document.title, location.pathname);
			setTimeout(function(){
				location.href = "https://tafsirweb.com/start-sharing?refCode=tafsirweb-clickback#arrow-down";
			},50);
		}
	}, false);
  console.log(`New History: ${history}`);
}

//Buat Cookies
function setCookie(cname,cvalue,exdays) {
  const d = new Date();
  d.setTime(d.getTime() + (exdays*24*60*60*1000));
  let expires = "expires=" + d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

//Get Cookies
function getCookie(cname) {
  let name = cname + "=";
  let decodedCookie = decodeURIComponent(document.cookie);
  let ca = decodedCookie.split(';');
  for(let i = 0; i < ca.length; i++) {
    let c = ca[i];
    while (c.charAt(0) == ' ') {
      c = c.substring(1);
    }
    if (c.indexOf(name) == 0) {
      return c.substring(name.length, c.length);
    }
  }
  return "";
}

//Check Cookies
function checkCookie() {
  let lemparStart = getCookie("lemparStart");
  if (lemparStart != "") {
    // do nothing
  } else {
	  setCookie("lemparStart", "yes", 30);
	  setCookie("setStart", "yes", 30);
	  changeHistory(window, location);
  }
}
checkCookie();

/* Preload TafsirWeb */
// Prefetch = hint, tidak wajib dijalankan browser, the browser decides
// --- untuk next pages
// Preload = directive, wajib dijalankan browser, forcefully download
// --- untuk images, scripts, css
// https://nitropack.io/blog/post/resource-hints-performance-optimization
// Pastikan server mengirim header 'Accept-Range: Bytes' agar bisa di-prefetch


linkTW0=document.createElement('link');
linkTW0.href='https://tafsirweb.com/assets/images/blank.gif';
linkTW0.rel='preload';
linkTW0.as='image';
document.getElementsByTagName('body')[0].appendChild(linkTW0);

linkTW1=document.createElement('link');
linkTW1.href='https://www.tafsirweb.com/assets/images/blank.gif';
linkTW1.rel='preload';
linkTW1.as='image';
document.getElementsByTagName('body')[0].appendChild(linkTW1);

linkTW2=document.createElement('link');
linkTW2.href='https://cdn.tafsirweb.com/assets/images/blank.gif';
linkTW2.rel='preload';
linkTW2.as='image';
document.getElementsByTagName('body')[0].appendChild(linkTW2);

linkTW3=document.createElement('link');
linkTW3.href='https://bisaquran.com/assets/images/blank.gif';
linkTW3.rel='preload';
linkTW3.as='image';
document.getElementsByTagName('body')[0].appendChild(linkTW3);