amazon_page_add_sakura_checker.user.js

// ==UserScript==
// @name        amazon page add sakura checker
// @version      0.6
// @description  sakura checker frame to amazon page add.
// @updateURL   https://gist.github.com/ten9miq/1c54907db1d11343e3e68a603e72cc2b/raw/amazon_page_add_sakura_checker.user.js
// @downloadURL https://gist.github.com/ten9miq/1c54907db1d11343e3e68a603e72cc2b/raw/amazon_page_add_sakura_checker.user.js
// @author       ten9miq
// @include      /^https://(www\.|smile\.)amazon\.co\.jp/(.*/)?[d-g]p//
// @match       http*://sakura-checker.jp/*
// @run-at document-end
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
        function getAmazonPath() {
            const matches = /((?:.*)amazon.(?:[.\w]+))\/(?:.*)?([a-z]p)\/(?:product\/)?([^\/\?&]+)(?:.*|$)/.exec(document.URL);
            if (matches === null) {
                return null;
            }
            return matches[3];
        }

        if(location.host == 'sakura-checker.jp'){
            document.querySelector('.mainBlock').id = 'main';
            const sakura_link = document.createElement('a');
            sakura_link.href=location.href;
            sakura_link.innerHTML='サクラチェッカーを開く';
            sakura_link.classList.add('button');
            sakura_link.classList.add('is-info');
            sakura_link.classList.add('is-medium');
            sakura_link.target='_blank';
            document.querySelector('.item-btn').appendChild(sakura_link);
            window.onload = ()=>{
                    location.hash = "main";
            }
        }else{
            const frame = document.createElement('iframe');
            const amazon_path = getAmazonPath();
            frame.src=`https://sakura-checker.jp/search/${amazon_path}/`;
            frame.id='sakura-checker';
            frame.scrolling='no';
            frame.style="height: 600px; width: 80%; border:0 none; -moz-transform: scale(0.8,0.8); -webkit-transform: scale(0.8,0.8); -o-transform: scale(0.8,0.8); -ms-transform: scale(0.8,0.8); transform: scale(0.8,0.8); overflow: hidden;";
            document.querySelector('#bottomRow').appendChild(frame);
        }
})();