// ==UserScript==
// @name        Amazon Global Price Comparator
// @description It shows prices across amazon portals (IT,DE,FR,ES,UK,US,CA,AU)
// @match       https://www.amazon.it/*
// @match       https://www.amazon.de/*
// @match       https://www.amazon.co.uk/*
// @match       https://www.amazon.fr/*
// @match       https://www.amazon.es/*
// @match       https://www.amazon.com/*
// @match       https://www.amazon.com.au/*
// @match       https://www.amazon.ca/*
// @version     2.2
// @author      SH3LL
// @grant       GM_xmlhttpRequest
// @namespace https://greasyfork.org/users/762057
// ==/UserScript==
function get_price(url,location) {
return new Promise(function (resolve, reject) {
GM_xmlhttpRequest({
method: 'GET',
responseType: 'document',
synchronous: false,
url: url,
onload: (resp) => {
const doc = document.implementation.createHTMLDocument().documentElement;
doc.innerHTML = resp.responseText;
let grabbed_price=null;
// ----------------------------- REGULAR ITEMS ALGORITHM -----------------------------
// --- Latest amazon grabber ---
if(grabbed_price === null) {
grabbed_price = doc.querySelector('span.a-price.aok-align-center.reinventPricePriceToPayMargin.priceToPay'); // id prezzo
if(grabbed_price!==null) grabbed_price=grabbed_price.children[1];
}
// --- PriceBlock of type: OURPRICE ---
if(grabbed_price === null) grabbed_price = doc.querySelector('#priceblock_ourprice'); // id prezzo
if(grabbed_price === null) {
grabbed_price = doc.querySelector('#apexPriceToPay');
if(grabbed_price!== null && grabbed_price.children[1]!==null) grabbed_price=grabbed_price.children[1];
}// nuova classe id del prezzo
if(grabbed_price === null) grabbed_price = doc.querySelector('#priceblock_saleprice') // id prezzo scontato
if(grabbed_price === null) grabbed_price = doc.querySelector('#priceblock_dealprice') // id prezzo offerta flash
if(grabbed_price === null) grabbed_price = doc.querySelector('#priceblock_pospromoprice') // id prezzo offerta flash
// --- PriceBlock of type: "New and Used From.." ---
if(grabbed_price === null){
let etichette = doc.getElementsByTagName("span"); //ottiene tutti i tag "span" della pagina
for(let el of etichette){
if(   ( el.innerText.includes("Nuevos") && el.innerText.includes("desde")  ) ||
( el.innerText.includes("Nuovo") && el.innerText.includes("da") ) ||
( el.innerText.includes("Neufs") && el.innerText.includes("occasions") ) ||
( el.innerText.includes("Neu") && el.innerText.includes("ab")  ) ||
( el.innerText.includes("New") && el.innerText.includes("from") )
) {
if(el.children[0]!==undefined && el.children[0].children[1]!==undefined){
grabbed_price = el.children[0].children[1];
}
break;
}
}
}
// ----------------------------- BOOK ITEMS ALGORITHM -----------------------------
// --- PriceBlock of type: APEX ---
let price_block=doc.querySelector("#apex_desktop"); //id blocco del prezzo
// --- PriceBlock of type: swatchElement (for Books)
if(price_block===null && grabbed_price===null) price_block=doc.querySelector("#tmmSwatches");
if(price_block!==null && grabbed_price===null){
if(price_block.innerText.includes("€") || price_block.innerText.includes("£") || price_block.innerText.includes("$")){ // se il blocco c'è
let etichette = price_block.getElementsByTagName("span");
for(let el of etichette){
if(el.className.includes("a-text-price") && el.getAttribute("data-a-color")==="price"){
grabbed_price = el.firstChild;
break;
}
if(el.className.includes("a-price") && el.className.includes("priceToPay")){
grabbed_price = el.firstChild;
break;
}
if(el.className.includes("a-size-base") && el.className.includes("a-color-price")){// for books
grabbed_price = el;
break;
}
if(el.id==="priceblock_ourprice"){
grabbed_price = el;
break;
}
}
}
}
// PASS THE OUTPUT
if(grabbed_price !== null && grabbed_price !== undefined && grabbed_price.innerText !== null && grabbed_price.innerText !== undefined && grabbed_price.innerText.trim()!== "" && grabbed_price.innerText.length < 10) {
resolve(grabbed_price.innerText); return;
}
resolve("error"); return;
}
});
});
}
async function main(){
if(window.location.href.includes("/dp/") || window.location.href.includes("/gp/product/") ){
//get amazon country
let my_location = (window.location.href).split("www.amazon.")[1].split("/")[0].trim();
let amz_code; //get amazon product code
if(window.location.href.includes("/gp/product/") && window.location.href.includes("?") ){
amz_code=(window.location.href).split("?")[0].split('/gp/product/')[1];
}else if(window.location.href.includes("/gp/product/") && !window.location.href.includes("?")){
amz_code=(window.location.href).split('/gp/product/')[1];
}else if(window.location.href.includes("/dp/") && window.location.href.includes("?")){
amz_code=(window.location.href).split("?")[0].split('/dp/')[1].split('/')[0];
}else if(window.location.href.includes("/dp/") && !window.location.href.includes("?")){
amz_code=(window.location.href).split('/dp/')[1].split('/')[0];
}
//let price_block = document.querySelector('#price');  //VECCHIO HOOK (che non esiste quando il prezzo è fuori stock)
let price_block = document.querySelector('#desktop_unifiedPrice'); //HOOK
if(price_block===null || price_block===undefined ) {price_block = document.querySelector('#productOverview_feature_div'); if(price_block!==null && price_block!==undefined) price_block=price_block.children[0];}
if(price_block===null || price_block===undefined ) {price_block = document.querySelector('#adoptedData');}
console.log(price_block);
let tr1 = document.createElement("tr");
let div1 = document.createElement("div");
div1.style.position = "relative";
div1.style.left="100%";
let message1= document.createElement("label");
message1.innerText="⏳ Loading Prices..";
message1.style.color="firebrick";
tr1.append(div1);
div1.append(message1);
//price_block.children[0].children[0].append(tr1);  //VECCHIO HOOK (che non esiste quando il prezzo è fuori stock)
price_block.append(tr1);
let locations = ["it","de","fr","es","co.uk","com","com.au","ca"];
let flags = { "it":"🇮🇹", "de":"🇩🇪", "fr":"🇫🇷", "es":"🇪🇸", "co.uk":"🇬🇧", "com":"🇺🇸","ca": "🇨🇦", "com.au": "🇦🇺" };
let prices=[],link,min_price=999999999999999999999999999;
console.log("My Location:"+my_location);
for(let curr_location of locations){
let curr_price = await get_price("https://www.amazon."+curr_location+"/dp/"+amz_code , curr_location);
console.log(curr_location+": price-> " + curr_price)
if(curr_price!=="error"){
//clean currency font in the right location
if(curr_location=="it" || curr_location=="de" ||curr_location=="fr" ||curr_location=="es") {curr_price=curr_price.replace("€","").trim()+"€"}
if(curr_location=="co.uk") {curr_price=curr_price.replace("£","").trim()+"£"}
if(curr_location=="com" || curr_location=="com.au" || curr_location=="ca") {curr_price=curr_price.replace("$","").trim()+"$"}
//get min price
let cleaned_price="";
cleaned_price=curr_price.replace(",",".");
cleaned_price=cleaned_price.replace("$","");
cleaned_price=cleaned_price.replace("£","");
cleaned_price=cleaned_price.replace("€","");
cleaned_price=cleaned_price.trim();//remove spaces
//calcola minimo prezzo
if(parseFloat(cleaned_price)< parseFloat(min_price)){ min_price=cleaned_price }
//creo link
link= document.createElement("a");
if(my_location.toString() === curr_location.toString()){
link.innerText= "<"+ flags[curr_location] + " " + curr_price.replace(".",",")+">";
}else{
link.innerText= "["+ flags[curr_location] + " " + curr_price.replace(".",",")+"]";
}
link.href="https://www.amazon."+curr_location+"/dp/"+amz_code;
link.style.color="dodgerblue";
link.style.paddingLeft = "5px";
link.style.paddingRight = "5px";
prices.push(link);
}else{
//creo link
link= document.createElement("a");
if(my_location.toString() === curr_location.toString()){
link.innerText= "<"+ flags[curr_location] + " stock-out>";
}else{
link.innerText= "["+ flags[curr_location] + " stock-out]";
}
link.href="https://www.amazon."+curr_location+"/dp/"+amz_code;
link.style.color="red";
link.style.paddingLeft = "5px";
link.style.paddingRight = "5px";
//message.style.color="firebrick";
prices.push(link);
}
}
//REMOVE LOADING
//price_block.children[0].children[0].removeChild(price_block.children[0].children[0].lastElementChild); //VECCHIO HOOK (che non esiste quando il prezzo è fuori stock)
price_block.removeChild(price_block.lastElementChild);
//Appen Price Block
let tr2 = document.createElement("tr");
let div2 = document.createElement("div");
tr2.append(div2);
for(let curr_price_link of prices){
let cleaned_price=curr_price_link.innerText.replace("CO.UK","");
cleaned_price=cleaned_price.replaceAll("🇮🇹","");
cleaned_price=cleaned_price.replaceAll("🇩🇪","");
cleaned_price=cleaned_price.replaceAll("🇫🇷","");
cleaned_price=cleaned_price.replaceAll("🇪🇸","");
cleaned_price=cleaned_price.replaceAll("🇬🇧","");
cleaned_price=cleaned_price.replaceAll("🇺🇸","");
cleaned_price=cleaned_price.replaceAll("🇦🇺","");
cleaned_price=cleaned_price.replaceAll("🇨🇦","");
cleaned_price=cleaned_price.replaceAll(",",".");
cleaned_price=cleaned_price.replaceAll("[","");
cleaned_price=cleaned_price.replaceAll("]","");
cleaned_price=cleaned_price.replaceAll("<","");
cleaned_price=cleaned_price.replaceAll(">","");
cleaned_price=cleaned_price.replaceAll("$","");
cleaned_price=cleaned_price.replaceAll("£","");
cleaned_price=cleaned_price.replaceAll("€","");
cleaned_price=cleaned_price.trim();//remove spaces
if(parseFloat(cleaned_price)===parseFloat(min_price)){curr_price_link.style.color="green"}
div2.append(curr_price_link);
}
price_block.append(tr2);
/*Append "OTHER SELLERS" block
let other_seller_link=document.createElement("a")
let tr3 = document.createElement("tr");
let div3 = document.createElement("div");
other_seller_link.href="https://www.amazon.it/gp/offer-listing/"+amz_code+"/ref=dp_olp_pn"
other_seller_link.innerText="{Force Sellers List}"
other_seller_link.style.textAlign = "center"
div3.append(other_seller_link);
tr3.append(div3);
price_block.append(tr3);*/
}
}
main();