const fetchPhotoScript =
    `
    function sleep(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
      }
      var allElements = [];
      var lastScrollHeight = 0;
      var count = 0;
      var lista_gruba = [];

      console.log("ready!");
      doit();


      function arrayContains(needle, arrhaystack)
      {
          return (arrhaystack.indexOf(needle) > -1);
      }

      function tryToAddUniqueElements() {
        var elementy = document.getElementsByClassName("_9AhH0");
        for (var i = 0, len = elementy.length; i < len; i++) {
            var ahref = elementy[i].parentNode;
            var img = ahref.firstChild.firstChild;
            var b = ahref.parentNode;
            var url = b.getAttribute("href");
            var media = img.getAttribute("srcset");
            if (media != null) {
                media = media.split(" ")[0];
                if (!arrayContains(url, allElements)) {
                    allElements.push(url);
                    lista_gruba.push({"url": url, "media": media})
                } else {
                    console.log(false);
                }
            }
        }
    }
      async function doit() {
          while (true) {
              var sh = document.documentElement.scrollHeight;
              if (sh != lastScrollHeight) {
                  lastScrollHeight = sh;
                  window.scrollTo(0,document.body.scrollHeight);
                  count = 0;
                  tryToAddUniqueElements();
              } else {
                  count += 2;
                  if (allElements.length > 150) {
                      console.log("Warunek ilosciowy");
                      console.log(allElements);
                      console.log(lista_gruba);
                      break;
                  }
                  if (count > 20){
                      console.log("Warunek czasowy");
                      console.log(allElements);
                      console.log(lista_gruba);
                      break;
                  }
              }
              await sleep(100);
          }
          setTimeout(() => window.postMessage(JSON.stringify({action:"onPhotosFetch",data:lista_gruba})), 0);
      }
      doiit();
  `