Merge pull request #59 from Jonniie/feature/image-optimization

Added image optimization using Sharp.js

Author: elizabetheonoja-art

index.js

@@ -33,6 +33,27 @@ function createApp(dependencies = {}) {
   app.use(express.json());
 const express = require('express');
 const cors = require('cors');
+const multer = require('multer');
+const path = require('path');
+const fs = require('fs');
+const sharp = require('sharp');
+const app = express();
+const port = 3000;
+
+const uploadDir = path.join(__dirname, 'uploads');
+if (!fs.existsSync(uploadDir)) {
+  fs.mkdirSync(uploadDir, { recursive: true });
+}
+
+const storage = multer.diskStorage({
+  destination: (req, file, cb) => cb(null, uploadDir),
+  filename: (req, file, cb) => cb(null, `${Date.now()}_${file.originalname}`)
+});
+const upload = multer({ storage });
+
+app.use(cors());
+app.use(express.json());
+app.use('/uploads', express.static(path.join(__dirname, 'uploads')));
 const {
   createConditionProofService,
   ConditionProofError,
@@ -504,6 +525,56 @@ app.post('/api/asset/:id/metadata', async (req, res) => {
   }
 });
 
+app.post('/api/images/optimize', upload.single('image'), async (req, res) => {
+  try {
+    if (!req.file) {
+      return res.status(400).json({ error: 'No image file provided' });
+    }
+
+    const { width = 300, height = 300 } = req.query;
+    const inputPath = req.file.path;
+    const filename = path.basename(req.file.originalname, path.extname(req.file.originalname));
+    const outputFilename = `${filename}_${width}x${height}.webp`;
+    const optimizedDir = path.join(__dirname, 'uploads', 'optimized');
+    
+    if (!fs.existsSync(optimizedDir)) {
+      fs.mkdirSync(optimizedDir, { recursive: true });
+    }
+
+    const outputPath = path.join(optimizedDir, outputFilename);
+
+    await sharp(inputPath)
+      .resize(parseInt(width), parseInt(height), { fit: 'cover' })
+      .toFormat('webp', { quality: 80 })
+      .toFile(outputPath);
+
+    res.json({
+      success: true,
+      original: req.file.filename,
+      optimized: outputFilename,
+      path: `/uploads/optimized/${outputFilename}`
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+app.get('/api/images/optimize/:filename', async (req, res) => {
+  try {
+    const filename = req.params.filename;
+    const filePath = path.join(__dirname, 'uploads', 'optimized', filename);
+    
+    if (!fs.existsSync(filePath)) {
+      return res.status(404).json({ error: 'Image not found' });
+    }
+
+    res.set('Content-Type', 'image/webp');
+    res.sendFile(filePath);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
 app.put('/api/asset/:id/metadata', async (req, res) => {
   try {
     const { id } = req.params;