Upload deepseek_javascript_20260623_6d713d.js

deepseek_javascript_20260623_6d713d.js

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+const express = require('express');
+const fs = require('fs');
+const path = require('path');
+const cors = require('cors');
+
+const app = express();
+const PORT = process.env.PORT || 7860;
+
+// Enable CORS for all routes (useful if frontend is served separately)
+app.use(cors());
+
+// Increase payload limit for base64 image data (up to 10 MB)
+app.use(express.json({ limit: '10mb' }));
+
+// Define the snapshots directory (relative to this file)
+const SNAPSHOT_DIR = path.join(__dirname, 'snapshots');
+
+// Create snapshots folder if it doesn't exist
+if (!fs.existsSync(SNAPSHOT_DIR)) {
+  fs.mkdirSync(SNAPSHOT_DIR, { recursive: true });
+  console.log(`[SERVER] Created snapshots directory at ${SNAPSHOT_DIR}`);
+}
+
+// Serve static files from the "public" folder at the root URL
+app.use(express.static(path.join(__dirname, 'public')));
+
+// Serve the snapshots folder as a static endpoint (so users can view saved images)
+app.use('/snapshots', express.static(SNAPSHOT_DIR));
+
+// POST endpoint to save a snapshot
+app.post('/api/snapshot', (req, res) => {
+  try {
+    const { image } = req.body; // expects base64 string (without the data:image/png;base64, prefix)
+    
+    if (!image) {
+      return res.status(400).json({ success: false, error: 'No image data provided' });
+    }
+
+    // Validate base64 format (basic check)
+    if (typeof image !== 'string' || image.length < 100) {
+      return res.status(400).json({ success: false, error: 'Invalid image data format' });
+    }
+
+    // Convert base64 to binary buffer
+    const buffer = Buffer.from(image, 'base64');
+
+    // Generate timestamp-based filename
+    const now = new Date();
+    const dateStr = now.getFullYear() + '-' +
+                    String(now.getMonth() + 1).padStart(2, '0') + '-' +
+                    String(now.getDate()).padStart(2, '0') + '_' +
+                    String(now.getHours()).padStart(2, '0') + '-' +
+                    String(now.getMinutes()).padStart(2, '0') + '-' +
+                    String(now.getSeconds()).padStart(2, '0') + '_' +
+                    String(now.getMilliseconds()).padStart(3, '0');
+    const filename = `snapshot_${dateStr}.png`;
+    const filePath = path.join(SNAPSHOT_DIR, filename);
+
+    // Write the file synchronously (can also use async with callback)
+    fs.writeFileSync(filePath, buffer);
+
+    console.log(`[SERVER] Saved snapshot: ${filename} (${buffer.length} bytes)`);
+
+    // Return success response with the file path (relative URL)
+    res.json({
+      success: true,
+      path: `/snapshots/${filename}`,
+      filename: filename
+    });
+
+  } catch (err) {
+    console.error('[SERVER] Error saving snapshot:', err.message);
+    res.status(500).json({ success: false, error: 'Internal server error: ' + err.message });
+  }
+});
+
+// Optional: endpoint to list all saved snapshots (for debugging)
+app.get('/api/snapshots/list', (req, res) => {
+  try {
+    const files = fs.readdirSync(SNAPSHOT_DIR).filter(f => f.endsWith('.png'));
+    res.json({ success: true, files });
+  } catch (err) {
+    res.status(500).json({ success: false, error: err.message });
+  }
+});
+
+// Health check endpoint (useful for Hugging Face)
+app.get('/health', (req, res) => {
+  res.status(200).send('OK');
+});
+
+// Start the server
+app.listen(PORT, () => {
+  console.log(`[SERVER] Gesture Drawing Space running on port ${PORT}`);
+  console.log(`[SERVER] Serving static files from ${path.join(__dirname, 'public')}`);
+  console.log(`[SERVER] Snapshots will be saved to ${SNAPSHOT_DIR}`);
+});