// ==UserScript==
// @name         Pinterest Ultra Assistant V6.5 (Ghost Stable)
// @namespace    http://tampermonkey.net/
// @version      6.5
// @description  Ghost Engine: One-Click Originals, AI 2x Sharpen, and Source Finder. Optimized for maximum stability.
// @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/";

    // --- 算法与颜色逻辑 (保持 V6.4 核心) ---
    function getColorDist(hex1, hex2) {
        const r1 = parseInt(hex1.slice(1,3), 16), g1 = parseInt(hex1.slice(3,5), 16), b1 = parseInt(hex1.slice(5,7), 16);
        const r2 = parseInt(hex2.slice(1,3), 16), g2 = parseInt(hex2.slice(3,5), 16), b2 = parseInt(hex2.slice(5,7), 16);
        return Math.sqrt((r1-r2)**2 * 0.3 + (g1-g2)**2 * 0.59 + (b1-b2)**2 * 0.11);
    }

    function rgbToHex(r, g, b) {
        return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1).toUpperCase();
    }

    function getVividPalette(img) {
        try {
            const canvas = document.createElement('canvas');
            const ctx = canvas.getContext('2d');
            canvas.width = 100; canvas.height = 100;
            ctx.drawImage(img, 0, 0, 100, 100);
            const data = ctx.getImageData(0, 0, 100, 100).data;
            let colorMap = {};
            for (let i = 0; i < data.length; i += 12) {
                const r = data[i], g = data[i+1], b = data[i+2], a = data[i+3];
                if (a < 128) continue;
                const saturation = Math.max(r, g, b) - Math.min(r, g, b);
                const brightness = (r + g + b) / 3;
                let bias = (saturation > 40) ? 1 : 0.1;
                if (brightness < 30 || brightness > 230) bias = 0.2;
                const hex = rgbToHex(r, g, b);
                colorMap[hex] = (colorMap[hex] || 0) + (Math.pow(saturation, 2) * bias + 1);
            }
            const sortedColors = Object.keys(colorMap).sort((a, b) => colorMap[b] - colorMap[a]);
            const final = [];
            for (const c of sortedColors) {
                if (final.length >= 6) break;
                if (final.every(ec => getColorDist(ec, c) > 50)) final.push(c);
            }
            return final;
        } catch(e) { return []; }
    }

    // --- 预览窗逻辑 ---
    async function processAndShow(imgUrl) {
        const originalUrl = imgUrl.replace(/\/(236x|474x|564x|736x|1200x)\//, '/originals/').replace(/\.webp$/, '.jpg');
        const overlay = document.createElement('div');
        overlay.style = "position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.97);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;">ANALYZING PIXELS...</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() {
            const palette = getVividPalette(img);
            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 bar = document.createElement('div');
            bar.style = "padding:25px;display:flex;flex-direction:column;align-items:center;gap:20px;background:#0a0a0a;";
            let palHTML = '<div style="display:flex;gap:12px;align-items:center;"><span style="font-size:10px;color:#444;text-transform:uppercase;letter-spacing:1px;">Accents:</span>';
            palette.forEach(c => { palHTML += `<div class="px-c" style="width:28px;height:28px;background:${c};border-radius:6px;cursor:pointer;border:2px solid #222;" data-hex="${c}"></div>`; });
            palHTML += '</div>';
            bar.innerHTML = palHTML + `<div><button id="px-go" 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;box-shadow:0 10px 30px rgba(37,117,252,0.3);">🚀 LAUNCH AI 8K ENGINE</button></div>`;
            
            container.appendChild(scrollBox);
            container.appendChild(bar);
            overlay.appendChild(container);
            
            overlay.querySelectorAll('.px-c').forEach(el => {
                el.onclick = () => { GM_setClipboard(el.dataset.hex); el.style.borderColor = "#fff"; setTimeout(()=>el.style.borderColor="#222",500); };
            });
            overlay.querySelector('#px-go').onclick = () => window.open(`${BRIDGE_PAGE}?url=${encodeURIComponent(originalUrl)}`, '_blank');
        };
        img.onerror = () => { window.open(originalUrl, '_blank'); overlay.remove(); };
    }

    // --- 核心注入逻辑：Ghost 模式 ---
    function injectButtons() {
        try {
            const images = document.querySelectorAll('img[src*="pinimg.com"]');
            images.forEach(img => {
                if (img.width < 100 || img.closest('.px-helper-bar')) return;
                
                // 更稳健的容器探测
                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.tagName !== 'BODY') {
                    // 仅在必要时修改定位，避免触发 Pinterest 全量重绘
                    if (window.getComputedStyle(container).position === 'static') {
                        container.style.setProperty('position', 'relative', 'important');
                    }

                    const bar = document.createElement('div');
                    bar.className = 'px-helper-bar';
                    bar.style = "position:absolute;top:8px;left:8px;z-index:999;display:flex;gap:4px;opacity:0;transition:0.2s;pointer-events:auto;";
                    
                    container.addEventListener('mouseenter', () => bar.style.opacity = "1");
                    container.addEventListener('mouseleave', () => bar.style.opacity = "0");

                    const btnS = 'color:white;border:none;border-radius:4px;cursor:pointer;padding:4px 8px;font-weight:bold;font-size:9px;box-shadow:0 2px 5px rgba(0,0,0,0.3);white-space:nowrap;';
                    
                    const b1 = document.createElement('button'); b1.innerHTML = '🪄 2x HD'; b1.style = btnS + 'background:#00BFFF;';
                    b1.onclick = (e) => { e.preventDefault(); e.stopPropagation(); processAndShow(img.src); };
                    
                    const b2 = document.createElement('button'); b2.innerHTML = '🖼️ Originals'; b2.style = btnS + 'background:#E60023;';
                    b2.onclick = (e) => { e.preventDefault(); e.stopPropagation(); window.open(img.src.replace(/\/(236x|474x|564x|736x)\//, '/originals/'), '_blank'); };

                    const b3 = document.createElement('button'); b3.innerHTML = '🔍 Source'; b3.style = btnS + 'background:#34a853;';
                    b3.onclick = (e) => { e.preventDefault(); e.stopPropagation(); window.open(`https://lens.google.com/uploadbyurl?url=${encodeURIComponent(img.src.replace(/\/(236x|474x|564x|736x)\//, '/originals/'))}`, '_blank'); };

                    bar.append(b1, b2, b3);
                    container.appendChild(bar);
                }
            });
        } catch (e) { console.error("Injection error skipped."); }
    }

    // --- 启动流程：避开加载高峰 ---
    window.addEventListener('load', () => {
        // 等待 2 秒，确保 Pinterest 的 JS 引擎已经跑顺了
        setTimeout(() => {
            injectButtons();
            const obs = new MutationObserver(injectButtons);
            obs.observe(document.body, { childList: true, subtree: true });
            setInterval(injectButtons, 3000);
        }, 2000);
    });

})();