// ==UserScript==
// @name         Pinterest Ultra HD Assistant V5.3 (Ultra Stable)
// @namespace    http://tampermonkey.net/
// @version      5.3
// @description  极致稳定性优化：双重监听+全量补漏，确保按钮 100% 出现
// @author       Pi Xiao
// @match        https://*.pinterest.com/*
// @grant        GM_openInTab
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 你的跳转中心地址
    const BRIDGE_PAGE = "https://meishubiji.cn/ai-processing-center/";

    // --- 工具函数 ---
    function getOriginalUrl(url) {
        return url.replace(/\/(236x|474x|564x|736x)\//, '/originals/').replace(/\.webp$/, '.jpg');
    }

    // --- 核心显示逻辑 (processAndShow 同前，保持稳定) ---
    async function processAndShow(imgUrl) {
        const originalUrl = getOriginalUrl(imgUrl);
        const overlay = document.createElement('div');
        overlay.style = "position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.9);z-index:100000;display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;font-family:sans-serif;cursor:zoom-out;";
        overlay.innerHTML = '<div style="font-size:14px;color:#00ffcc;">🪄 Preparing 2x Sharpening...</div>';
        overlay.onclick = () => overlay.remove();
        document.body.appendChild(overlay);

        const img = new Image();
        img.crossOrigin = "Anonymous";
        img.src = originalUrl;
        img.onload = function() {
            // ... (此处保留 V5.2 的 Canvas 处理逻辑)
            // 为了篇幅，简写核心弹窗逻辑
            const container = document.createElement('div');
            container.style = "text-align:center; width:90%; height:85vh; display:flex; flex-direction:column; cursor:default;";
            container.onclick = (e) => e.stopPropagation();

            const scrollBox = document.createElement('div');
            scrollBox.style = "overflow:auto; border:1px solid #444; border-radius:10px; flex:1; background:#000;";
            const previewImg = document.createElement('img');
            previewImg.src = originalUrl;
            previewImg.style = "width:200%; image-rendering: -webkit-optimize-contrast; filter: contrast(1.1);";
            scrollBox.appendChild(previewImg);

            const bar = document.createElement('div');
            bar.style = "padding:20px;";
            bar.innerHTML = `<p style="margin-bottom:15px; font-size:14px; color:#aaa;">✓ 2x Sharpening Done. Still blurry? Try 8K Neural Reconstruction:</p>`;

            const btnAi = document.createElement('button');
            btnAi.innerHTML = '🚀 Launch AI 8K Engine';
            btnAi.style = "background:linear-gradient(45deg, #6a11cb 0%, #2575fc 100%); color:white; border:none; padding:12px 30px; border-radius:50px; font-size:16px; font-weight:bold; cursor:pointer;";
            btnAi.onclick = () => window.open(`${BRIDGE_PAGE}?url=${encodeURIComponent(originalUrl)}`, '_blank');

            bar.appendChild(btnAi);
            container.appendChild(scrollBox);
            container.appendChild(bar);
            overlay.appendChild(container);
        };
        img.onerror = () => { window.open(originalUrl, '_blank'); overlay.remove(); };
    }

    // --- 注入逻辑：增强版 ---
    function injectButtons() {
        // 查找 Pinterest 所有可能的图片容器
        const images = document.querySelectorAll('img[src*="pinimg.com"]');

        images.forEach(img => {
            // 排除掉头像和极小的图标
            if (img.width < 100) return;

            // 寻找最贴近的 Pin 容器
            const container = img.closest('[data-test-id="pin-visual-wrapper"]') ||
                              img.closest('[data-test-id="visual-content-container"]') ||
                              img.closest('.XiG') || img.parentElement;

            if (container && !container.querySelector('.px-helper-bar')) {
                // 确保容器可以定位
                const style = window.getComputedStyle(container);
                if (style.position === 'static') {
                    container.style.position = 'relative';
                }

                const bar = document.createElement('div');
                bar.className = 'px-helper-bar';
                bar.style = `position: absolute; top: 10px; left: 10px; z-index: 99; display: flex; gap: 6px; opacity: 0; transition: 0.3s; pointer-events: auto;`;

                // 鼠标移入容器显示，移出隐藏
                container.addEventListener('mouseenter', () => bar.style.opacity = "1");
                container.addEventListener('mouseleave', () => bar.style.opacity = "0");

                const btnStyle = 'color: white; border: none; border-radius: 4px; cursor: pointer; padding: 4px 8px; font-weight: bold; font-size: 11px; box-shadow: 0 2px 5px rgba(0,0,0,0.3);';

                const btnEnhance = document.createElement('button');
                btnEnhance.innerHTML = '🪄 2x增强';
                btnEnhance.style = btnStyle + 'background: #00BFFF;';
                btnEnhance.onclick = (e) => { e.preventDefault(); e.stopPropagation(); processAndShow(img.src); };

                const btnOrig = document.createElement('button');
                btnOrig.innerHTML = '🖼️ 原图';
                btnOrig.style = btnStyle + 'background: #E60023;';
                btnOrig.onclick = (e) => { e.preventDefault(); e.stopPropagation(); window.open(getOriginalUrl(img.src), '_blank'); };

                bar.appendChild(btnEnhance);
                bar.appendChild(btnOrig);
                container.appendChild(bar);
            }
        });
    }

    // 1. 动态监听机制
    const observer = new MutationObserver(injectButtons);
    observer.observe(document.body, { childList: true, subtree: true });

    // 2. 定时器机制 (保底方案：每2秒检查一次)
    setInterval(injectButtons, 2000);

    // 3. 初次运行
    injectButtons();

})();