5b528d243a
- Split monolithic server.js (1111 lines) into route modules - Add .env config (port, session secret, quality, limits) - Add SSRF protection for parser/proxy/redirect endpoints - Add optional password auth middleware - Add structured logger (replaces raw fs.appendFileSync) - Add graceful shutdown with timeout - Add extended /health endpoint (uptime, memory, pid) - Add ecosystem.config.js for PM2 (memory limit, restart policy) - Make compress quality configurable (was hardcoded 60) - Expand SVG AI icons library (7 -> 20 icons) - Add dotenv dependency
63 lines
2.2 KiB
JavaScript
63 lines
2.2 KiB
JavaScript
const express = require('express');
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const sharp = require('sharp');
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const path = require('path');
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const log = require('../lib/logger');
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const router = express.Router();
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function normalizeColor(color) {
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if (!color) return '#cccccc';
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if (/^[0-9A-Fa-f]{6}$/.test(color)) return '#' + color;
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if (/^[0-9A-Fa-f]{3}$/.test(color)) return '#' + color;
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return color.toLowerCase();
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}
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function escapeXml(str) {
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return str.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"');
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}
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async function placeholderHandler(req, res) {
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const { size, bg, fg, text: textFromPath } = req.params;
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const { text: textFromQuery, format = 'png', fontsize } = req.query;
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const text = textFromQuery || textFromPath || '';
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const [w, h] = size.split('x').map(Number);
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const width = Math.min(Math.max(w || 300, 1), 4000);
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const height = Math.min(Math.max(h || 200, 1), 4000);
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const bgColor = normalizeColor(bg);
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const fgColor = normalizeColor(fg);
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const fontSize = fontsize ? parseInt(fontsize, 10) : Math.max(12, Math.floor(Math.min(width, height) / 8));
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const svg = `<svg width="${width}" height="${height}" xmlns="http://www.w3.org/2000/svg">
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<rect width="100%" height="100%" fill="${escapeXml(bgColor)}"/>
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<text x="50%" y="50%" dominant-baseline="central" text-anchor="middle"
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font-family="sans-serif" font-weight="bold" font-size="${fontSize}"
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fill="${escapeXml(fgColor)}">${escapeXml(text)}</text>
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</svg>`;
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try {
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let img = sharp(Buffer.from(svg));
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if (format === 'jpg' || format === 'jpeg') {
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res.type('jpeg').end(await img.jpeg({ quality: 90 }).toBuffer());
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} else if (format === 'webp') {
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res.type('webp').end(await img.webp({ quality: 90 }).toBuffer());
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} else {
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res.type('png').end(await img.png().toBuffer());
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}
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} catch (err) {
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log.error('Placeholder error', { error: err.message });
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res.status(500).json({ error: 'Generation failed' });
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}
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}
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// Placeholder page
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router.get('/', (req, res) => {
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res.sendFile(path.join(__dirname, '..', 'public', 'placeholder.html'));
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});
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router.get('/:size/:bg/:fg', placeholderHandler);
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router.get('/:size/:bg/:fg/:text', placeholderHandler);
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module.exports = router;
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