// ==UserScript==
// @name         Pinterest Ultra Assistant V6.6 (Phantom Light)
// @namespace    http://tampermonkey.net/
// @version      6.6
// @description  Lightweight & Ultra Fast: One-Click Originals, AI 2x Sharpen, and Source Finder. Zero lag.
// @author       Pi Xiao
// @match        https://*.pinterest.com/*
// @grant        GM_openInTab
// @grant        GM_setClipboard
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    const BRIDGE_PAGE = "https://meishubiji.cn/ai-processing-center/";

    // --- 1. 核心算法逻辑 (仅在弹窗时运行，不占初始资源) ---
    const getOriginalUrl = (url) => url.replace(/\/(236x|474x|564x|736x|1200x)\//, '/originals/').replace(/\.webp$/, '.jpg');

    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(0,0,0,0.96);z-index:2147483647;display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;font-family:sans-serif;cursor:zoom-out;";
        overlay.innerHTML = '<div style="text-align:center;"><div class="px-spin"></div><div style="margin-top:15px;font-size:14px;color:#00ffcc;">RECONSTRUCTING...</div></div><style>.px-spin{width:30px;height:30px;border:2px solid rgba(0,255,204,0.1);border-top-color:#00ffcc;border-radius:50%;animation:spin .8s linear infinite;margin:0 auto;}@keyframes spin{to{transform:rotate(360deg)}}</style>';
        overlay.onclick = () => overlay.remove();
        document.body.appendChild(overlay);

        const img = new Image();
        img.crossOrigin = "Anonymous";
        img.src = originalUrl;
        img.onload = function() {
            overlay.innerHTML = "";
            const container = document.createElement('div');
            container.style = "text-align:center;width:95%;height:90vh;display:flex;flex-direction:column;cursor:default;";
            container.onclick = (e) => e.stopPropagation();
            const scrollBox = document.createElement('div');
            scrollBox.style = "overflow:auto;border:1px solid #333;border-radius:12px;flex:1;background:#050505;display:flex;align-items:center;justify-content:center;";
            const pImg = document.createElement('img');
            pImg.src = originalUrl;
            pImg.style = "max-width:200%;image-rendering:-webkit-optimize-contrast;filter:contrast(1.05);";
            scrollBox.appendChild(pImg);
            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:14px 50px;border-radius:50px;font-size:15px;font-weight:bold;cursor:pointer;margin:20px;";
            btnAi.onclick = () => window.open(`${BRIDGE_PAGE}?url=${encodeURIComponent(originalUrl)}`, '_blank');
            container.appendChild(scrollBox);
            container.appendChild(btnAi);
            overlay.appendChild(container);
        };
        img.onerror = () => { window.open(originalUrl, '_blank'); overlay.remove(); };
    }

    // --- 2. 极其克制的注入逻辑 ---
    let timer = null;
    function throttleInject() {
        if (timer) return;
        timer = setTimeout(() => {
            const images = document.querySelectorAll('img[src*="pinimg.com"]:not(.px-done)');
            images.forEach(img => {
                if (img.width < 100) return;
                img.classList.add('px-done'); // 标记已处理，不再重复扫描

                const container = img.closest('[data-test-id="pin-visual-wrapper"]') || 
                                  img.closest('[data-test-id="visual-content-container"]') || 
                                  img.parentElement;

                if (container) {
                    const bar = document.createElement('div');
                    bar.className = 'px-helper-bar';
                    bar.style = "position:absolute;top:5px;left:5px;z-index:99;display:flex;gap:3px;opacity:0;transition:opacity 0.2s;";
                    
                    const btnStyle = 'color:white;border:none;border-radius:3px;cursor:pointer;padding:2px 5px;font-weight:bold;font-size:8px;box-shadow:0 1px 3px rgba(0,0,0,0.3);';
                    
                    const b1 = document.createElement('button'); b1.innerHTML = '🪄 2x'; b1.style = btnStyle + 'background:#00BFFF;';
                    b1.onclick = (e) => { e.preventDefault(); e.stopPropagation(); processAndShow(img.src); };
                    
                    const b2 = document.createElement('button'); b2.innerHTML = '🖼️ HD'; b2.style = btnStyle + 'background:#E60023;';
                    b2.onclick = (e) => { e.preventDefault(); e.stopPropagation(); window.open(getOriginalUrl(img.src), '_blank'); };

                    const b3 = document.createElement('button'); b3.innerHTML = '🔍 Src'; b3.style = btnStyle + 'background:#34a853;';
                    b3.onclick = (e) => { e.preventDefault(); e.stopPropagation(); window.open(`https://lens.google.com/uploadbyurl?url=${encodeURIComponent(getOriginalUrl(img.src))}`, '_blank'); };

                    bar.append(b1, b2, b3);
                    container.appendChild(bar);

                    container.addEventListener('mouseenter', () => bar.style.opacity = "1");
                    container.addEventListener('mouseleave', () => bar.style.opacity = "0");
                }
            });
            timer = null;
        }, 500); // 降低频率到每 0.5 秒最多执行一次
    }

    // --- 3. 启动逻辑：静默观察 ---
    const observer = new MutationObserver(throttleInject);
    observer.observe(document.body, { childList: true, subtree: true });
    
    // 首次运行
    setTimeout(throttleInject, 3000);
})();