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Amazon keepa

Amazon keepa plugin

// ==UserScript==
// @name        Amazon keepa
// @description Amazon keepa plugin
// @author Maxeo | maxeo.net
// @license https://creativecommons.org/licenses/by-sa/4.0/
// @include     https://www.amazon.*/*/dp/*
// @include     https://www.amazon.*/dp/*
// @include     https://www.amazon.*/gp/product/*
// @version     1.3.2
// @icon        https://greasyfork.org/system/screenshots/screenshots/000/006/429/original/asd.png
// @namespace https://greasyfork.org/users/88678
// ==/UserScript==
var prod_code;
if (prod_code = window.location.pathname.match(/^\/gp\/product\/(.*)\/.*$/)) {
  prod_code = prod_code[1]
}
else if (prod_code = window.location.pathname.match(/^\/.*\/dp\/(.*)\/.*$/)) {
  prod_code = prod_code[1];
}
else if (prod_code = window.location.pathname.match(/^\/dp\/(.*)\/.*$/)) {
  prod_code = prod_code[1];
}
else if(prod_code = window.location.pathname.match(/^\/gp\/product\/(.*)\\?.*$/)) {
  prod_code = prod_code[1];
}
else if (prod_code = window.location.pathname.match(/^\/.*\/dp\/(.*)\\?.*$/)) {
  prod_code = prod_code[1];
}
else if (prod_code = window.location.pathname.match(/^\/dp\/(.*)\\?.*$/)) {
  prod_code = prod_code[1];
}

var numl=0;
switch(document.location.hostname.match('.*\.amazon\.(.*)$')[1]){
    case 'com':
      numl=1;
      break;
    case 'ca':
      numl=6;
      break;
    case 'mx':
      numl=11;
      break;
    case 'uk':
      numl=2;
      break;
    case 'de':
      numl=3;
      break;
    case 'fr':
      numl=4;
      break;
    case 'it':
      numl=8;
      break;
    case 'es':
      numl=9;
      break;
    case 'jp':
      numl=5;
      break;
    case 'in':
      numl=10;
      break;
}

document.querySelector('#dp-container').append('<iframe style="width: 100%; height: 100%; border:0 none;overflow: hidden;" src="https://keepa.com/iframe_addon.html#'+numl+'-0-'+prod_code+'" scrolling="no" id="keepa"></iframe>')