// ==UserScript==
// @name         Pinterest Ultra Assistant V6.7 (Instant Fix)
// @namespace    http://tampermonkey.net/
// @version      6.7
// @description  Instant Injection: Works on slow networks & detail pages. One-Click Originals, AI 2x Sharpen, and Source Finder.
// @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/";

    // --- 核心逻辑 ---
    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:12px 40px;border-radius:50px;font-size:16px;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(); };
    }

    // --- 3. 增强版注入逻辑 ---
    function injectButtons() {
        const images = document.querySelectorAll('img[src*="pinimg.com"]:not(.px-done)');
        
        images.forEach(img => {
            if (img.width < 100) return;
            img.classList.add('px-done');

            // 详情页和首页通用的容器寻找逻辑
            const container = img.closest('[data-test-id="visual-content-container"]') || 
                              img.closest('[data-test-id="pin-visual-wrapper"]') || 
                              img.parentElement;

            if (container) {
                // 强制确保容器可以相对定位
                if (window.getComputedStyle(container).position === 'static') {
                    container.style.setProperty('position', 'relative', 'important');
                }

                const bar = document.createElement('div');
                bar.className = 'px-helper-bar';
                // 详情页调大一点，首页保持精致
                const isDetail = location.href.includes('/pin/');
                bar.style = `position:absolute; top:${isDetail ? '20px' : '10px'}; left:${isDetail ? '20px' : '10px'}; z-index:2147483640; display:flex; gap:5px; opacity:0; transition:opacity 0.3s; pointer-events:auto;`;
                
                const btnStyle = 'color:white; border:none; border-radius:4px; cursor:pointer; padding:5px 8px; font-weight:bold; font-size:10px; box-shadow:0 2px 8px rgba(0,0,0,0.5); white-space:nowrap;';
                
                const b1 = document.createElement('button'); b1.innerHTML = '🪄 2x HD'; b1.style = btnStyle + 'background:#00BFFF;';
                b1.onclick = (e) => { e.preventDefault(); e.stopPropagation(); processAndShow(img.src); };
                
                const b2 = document.createElement('button'); b2.innerHTML = '🖼️ Originals'; 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 = '🔍 Source'; 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");
            }
        });
    }

    // --- 启动逻辑：不再等待 window.load ---
    // 采用立即运行 + 持续监听模式
    injectButtons();
    const observer = new MutationObserver(injectButtons);
    observer.observe(document.body, { childList: true, subtree: true });
    
    // 每 2 秒全量补漏一次，应对极端网络环境
    setInterval(injectButtons, 2000);

})();