// ==UserScript==
// @name        Amazon Fake Review Analyzer (ReviewMeta)
// @description It returns ReviewMeta.com percentage of potentially fake reviews on amazon and it recalculates the "true" star score excluding "fake" reviews
// @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/*
// @version     1.2.1
// @author      SH3LL
// @grant       GM_xmlhttpRequest
// @namespace https://greasyfork.org/users/762057
// ==/UserScript==
function get_stars_number(url) {
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 stars_number = doc.querySelector('#adjusted-rating-large');
let percent = doc.getElementsByTagName('small');
let missing_reviews = doc.getElementsByTagName('center');
if(stars_number !== null) {
stars_number=stars_number.innerText;
for(let perc of percent){
if(perc.innerText.includes("of potentially unnatural reviews removed")){
percent=perc.children[0].children[0].innerText;
break;
}
}
}
resolve([stars_number,percent]);
}
});
});
}
async function main(){
let location="it";
if(window.location.href.includes(".it")){location="it";}
if(window.location.href.includes(".de")){location="de";}
if(window.location.href.includes(".fr")){location="fr";}
if(window.location.href.includes(".es")){location="es";}
if(window.location.href.includes(".co.uk")){location="uk";}
if(window.location.href.includes(".com")){location="us";}
if(window.location.href.includes("/dp/") || window.location.href.includes("/gp/product/") ){
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 rev_url;
if(location==="us" /*america (.com)*/ ) {rev_url="https://reviewmeta.com/amazon/";} else {rev_url="https://reviewmeta.com/amazon-"+location+"/";}
rev_url=rev_url+amz_code;
let stars_number_and_percent = await get_stars_number(rev_url); // get data from ReviewMeta
let stars_block = document.getElementsByClassName('a-fixed-left-grid AverageCustomerReviews a-spacing-small');
if(stars_number_and_percent[0]!==null) {// dati trovati nel database
let message_review = document.createElement('small'); //review info
let message_percent = document.createElement('small'); //review info
let review_value = document.createElement('label'); //review info
let percent_value = document.createElement('label'); //review info
let link_reviewmeta = document.createElement('a'); //link to ReviewMeta
message_review.innerText="ReviewMeta Filtered Reviews "+"["+location.toUpperCase()+"]: ";
message_review.style.color = 'darkorange';
review_value.innerText=stars_number_and_percent[0]+"/5";
review_value.style.color = 'firebrick';
message_percent.innerText="Potentially Fake Reviews ["+location.toUpperCase()+"]: ";
message_percent.style.color = 'darkorange';
percent_value.innerText=stars_number_and_percent[1];
percent_value.style.color = 'firebrick';
message_percent.append(percent_value);
link_reviewmeta.innerText="[Open this product in ReviewMeta]";
link_reviewmeta.style.color = 'forestgreen';
link_reviewmeta.href = rev_url;
let div1 = document.createElement("div");
let div2 = document.createElement("div");
let div3 = document.createElement("div");
div1.append(message_review);
div1.append(review_value);
div2.append(message_percent);
div2.append(percent_value);
div3.append(link_reviewmeta);
stars_block[0].append(div1);
stars_block[0].append(div2);
stars_block[0].append(div3);
}else{ //dati non trovati nel database
let message_review = document.createElement('small'); //review info
let link_reviewmeta = document.createElement('a'); //link to ReviewMeta
message_review.innerText="Missing product in ReviewMeta DataBase-"+location.toUpperCase()+" or missing reviews for Amazon-"+location.toUpperCase();
message_review.style.color = 'firebrick';
link_reviewmeta.innerText="[Add this product to Database]";
link_reviewmeta.style.color = 'forestgreen';
link_reviewmeta.href = rev_url;
let div1 = document.createElement("div");
let div2 = document.createElement("div");
div1.append(message_review);
div2.append(link_reviewmeta);
stars_block[0].append(div1);
stars_block[0].append(div2);
}
}
}
main();