// ==UserScript==
// @name         关键词叠词生成器
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  输入关键词生成组合叠词
// @author       You
// @match        https://www.amazon.com/*
// @match        https://www.amazon.co.uk/*
// @grant        GM_addStyle
// @downloadURL https://update.greasyfork.icu/scripts/517431/%E5%85%B3%E9%94%AE%E8%AF%8D%E5%8F%A0%E8%AF%8D%E7%94%9F%E6%88%90%E5%99%A8.user.js
// @updateURL https://update.greasyfork.icu/scripts/517431/%E5%85%B3%E9%94%AE%E8%AF%8D%E5%8F%A0%E8%AF%8D%E7%94%9F%E6%88%90%E5%99%A8.meta.js
// ==/UserScript==

(function () {
    'use strict';

    // 添加样式
    GM_addStyle(`
        #wordGeneratorContainer {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 9999;
            background-color: #f9f9f9;
            padding: 20px;
            border: 2px solid #ccc;
            border-radius: 15px;
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
            display: none;
            font-family: 'Arial', sans-serif;
            width: auto;
            max-width: 500px;
            min-width: 300px;
        }

        #openGeneratorButton {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: #0073e6;
            color: white;
            padding: 15px 20px;
            font-size: 20px;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            z-index: 9999;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }

        #outputArea {
            white-space: pre-wrap;
            word-wrap: break-word;
            margin-top: 15px;
            border: 1px solid #ddd;
            padding: 15px;
            background-color: #f4f4f4;
            min-height: 100px;
            max-height: 150px;
            overflow-y: auto;
            border-radius: 8px;
        }

        #wordGeneratorContainer button {
            margin-top: 10px;
            margin-right: 5px;
            padding: 10px;
            font-size: 14px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
        }

        #copyButton {
            background-color: #0073e6;
            color: white;
        }

        #clearButton {
            background-color: #ff9800;
            color: white;
        }

        #closeButton {
            background-color: #ff3b3b;
            color: white;
        }

        #generateButton {
            background-color: #4caf50;
            color: white;
        }

        #wordGeneratorContainer button:hover {
            opacity: 0.8;
        }
    `);

    // 创建容器
    const container = document.createElement('div');
    container.id = 'wordGeneratorContainer';

    const inputBox = document.createElement('input');
    inputBox.type = 'text';
    inputBox.placeholder = '输入关键词';
    inputBox.style.width = '100%';

    const generateButton = document.createElement('button');
    generateButton.id = 'generateButton';
    generateButton.textContent = '生成叠词';

    const copyButton = document.createElement('button');
    copyButton.id = 'copyButton';
    copyButton.textContent = '复制';

    const clearButton = document.createElement('button');
    clearButton.id = 'clearButton';
    clearButton.textContent = '清空';

    const closeButton = document.createElement('button');
    closeButton.id = 'closeButton';
    closeButton.textContent = '关闭';

    const outputArea = document.createElement('pre');
    outputArea.id = 'outputArea';

    container.appendChild(inputBox);
    container.appendChild(generateButton);
    container.appendChild(copyButton);
    container.appendChild(clearButton);
    container.appendChild(closeButton);
    container.appendChild(outputArea);
    document.body.appendChild(container);

    // 显示生成器按钮
    const openGeneratorButton = document.createElement('button');
    openGeneratorButton.id = 'openGeneratorButton';
    openGeneratorButton.textContent = '叠';
    document.body.appendChild(openGeneratorButton);

    // 功能实现
    function generateCombinations(input) {
        const words = input.trim().split(/\s+/);
        const length = words.length;

        if (length < 2 || length > 4) {
            return '请输入 2 到 4 个关键词！';
        }

        const combinations = [];

        // AB式
        if (length === 2) {
            combinations.push(`${words[0]} ${words[1]} ${words[0]} ${words[1]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]} ${words[1]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[1]}`);
        }

        // ABC式
        if (length === 3) {
            combinations.push(`${words[0]} ${words[1]} ${words[2]} ${words[0]} ${words[1]} ${words[2]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]} ${words[1]} ${words[2]} ${words[2]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]} ${words[2]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[1]} ${words[2]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[2]} ${words[2]}`);
        }

        // ABCD式
        if (length === 4) {
            combinations.push(`${words[0]} ${words[1]} ${words[2]} ${words[3]} ${words[0]} ${words[1]} ${words[2]} ${words[3]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]} ${words[1]} ${words[2]} ${words[2]} ${words[3]} ${words[3]}`);
            combinations.push(`${words[0]} ${words[0]} ${words[1]} ${words[2]} ${words[3]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[1]} ${words[2]} ${words[3]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[2]} ${words[2]} ${words[3]}`);
            combinations.push(`${words[0]} ${words[1]} ${words[2]} ${words[3]} ${words[3]}`);
        }

        return combinations.join('\n');
    }

    generateButton.addEventListener('click', () => {
        const input = inputBox.value;
        const output = generateCombinations(input);
        outputArea.textContent = output;
    });

    copyButton.addEventListener('click', () => {
        const text = outputArea.textContent;
        if (text) {
            navigator.clipboard.writeText(text).then(() => {
                alert('内容已复制到剪贴板！');
            });
        } else {
            alert('没有内容可复制！');
        }
    });

    clearButton.addEventListener('click', () => {
        inputBox.value = '';
        outputArea.textContent = '';
    });

    closeButton.addEventListener('click', () => {
        container.style.display = 'none';
    });

    openGeneratorButton.addEventListener('click', () => {
        container.style.display = 'block';
    });
})();