// ==UserScript==
// @name         ASIN链接生成器
// @namespace    your-namespace
// @version      1.0
// @description  生成ASIN链接并跳转到对应的Amazon页面
// @match        *://*.amazon.*
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    function openASINLink() {
        var asin = prompt("请输入ASIN");
        if (asin !== null) {
            var domain = window.location.hostname;
            var url = "";
            if (domain.includes("amazon.com")) {
                url = "https://www.amazon.com/dp/" + asin;
            } else if (domain.includes("amazon.ca")) {
                url = "https://www.amazon.ca/dp/" + asin;
            } else if (domain.includes("amazon.co.uk")) {
                url = "https://www.amazon.co.uk/dp/" + asin;
            } else if (domain.includes("amazon.de")) {
                url = "https://www.amazon.de/dp/" + asin;
            }
            window.location.href = url;
        }
    }

    function openBatchASINLink() {
        var asinList = prompt("请输入批量ASIN，以换行符分隔");
        if (asinList !== null) {
            var domain = window.location.hostname;
            var url = "";
            if (domain.includes("amazon.com")) {
                url = "https://www.amazon.com/s?rh=p_78%3A" + asinList.replace(/\n/g, "%7C");
            } else if (domain.includes("amazon.ca")) {
                url = "https://www.amazon.ca/s?rh=p_78%3A" + asinList.replace(/\n/g, "%7C");
            } else if (domain.includes("amazon.co.uk")) {
                url = "https://www.amazon.co.uk/s?rh=p_78%3A" + asinList.replace(/\n/g, "%7C");
            } else if (domain.includes("amazon.de")) {
                url = "https://www.amazon.de/s?rh=p_78%3A" + asinList.replace(/\n/g, "%7C");
            }
            window.location.href = url;
        }
    }

    function createButton(text, clickHandler) {
        var button = document.createElement("button");
        button.textContent = text;
        button.style.position = "fixed";
        button.style.top = "50%";
        button.style.transform = "translateY(-50%)";
        button.style.left = "10px";
        button.style.zIndex = "9999";
        button.addEventListener("click", clickHandler);
        document.body.appendChild(button);
    }

    createButton("打开ASIN", openASINLink);
    createButton("打开批量ASIN", openBatchASINLink);
})();