API Functions for communities and product offers added

routes/communities.js

@@ -0,0 +1,18 @@
+import {Router} from 'express';
+import { createCommunity, getCommunityById, getAllCommunities, deleteCommunity, editCommunity } from '../functions/communityFunctions.js';
+const router = Router();
+
+// Validate create community payload
+const validateCommunityPayload = (req, res, next) => {
+    const { nombre, descripcion } = req.body;
+    if (!nombre || !descripcion) {
+        return res.status(400).json({ error: 'nombre and descripcion are required' });
+    }
+    next();
+};
+
+router.post('/', validateCommunityPayload, createCommunity);
+router.get('/', getAllCommunities);
+router.get('/:id_comunidad', getCommunityById);
+router.put('/:id_comunidad', validateCommunityPayload, editCommunity);
+router.delete('/:id_comunidad', deleteCommunity);

routes/offers.js

@@ -0,0 +1,81 @@
+import { Router } from "express";
+import { createNewOffer, getOfferById, deleteOffer, getAllOffers, getOffersByUserId, editOffer } from "../functions/offerFunctions.js";
+const router = Router();
+
+const storage = multer.memoryStorage();
+
+const fileFilter = (req, file, cb) => {
+  if (file.mimetype.startsWith('image/')) {
+    cb(null, true);
+  } else {
+    cb(new Error('Solo se permiten imágenes'), false);
+  }
+};
+
+const upload = multer({
+  storage: storage,
+  fileFilter: fileFilter,
+  limits: {
+    fileSize: 5 * 1024 * 1024 // 5MB limit
+  }
+});
+
+async function processImage(file) {
+    const imagePath = path.join(process.cwd(), 'uploads');
+
+    const buffer = file.buffer;
+    const hash = crypto.createHash('sha256').update(buffer).digest('hex');
+    const mime = await fileTypeFromBuffer(buffer).then(type => type?.mime);
+    
+    // Validate MIME type
+    if (!mime || !['image/jpeg', 'image/png', 'image/gif', 'image/webp'].includes(mime)) {
+        throw new Error('Unsupported image format');
+    }
+
+    // File save name and path if not GIF
+    let filename;
+    if (mime === 'image/gif') {
+        filename = `${hash}.gif`;
+        await fs.writeFile(path.join(imagePath, filename), buffer);
+    } else {
+        filename = `${hash}.webp`;
+        await sharp(buffer)
+            .resize({ width: 800, height: 800, fit: 'inside', withoutEnlargement: true })
+            .rotate()
+            .normalise()
+            .withMetadata()
+            .toFormat('webp', { quality: 80 })
+            .toFile(path.join(imagePath, filename));
+    }
+    return filename;
+}
+
+const processUploadedImage = async (req, res, next) => {
+    try {
+        if (req.file) {
+            const filename = await processImage(req.file);
+            req.processedFilename = filename;
+        }
+        next();
+    } catch (error) {
+        console.error('Error processing image:', error);
+        res.status(400).json({ error: 'Error al procesar la imagen: ' + error.message });
+    }
+};
+
+
+// Validate create offer payload
+const validateOfferPayload = (req, res, next) => {
+    const { nombre, descripcion, precio, id_usuario } = req.body;
+    if (!nombre || !descripcion || !precio || !id_usuario) {
+        return res.status(400).json({ error: 'nombre, descripcion, precio and id_usuario are required' });
+    }
+    next();
+};
+
+router.post('/', upload.single('imagen'), validateOfferPayload, processUploadedImage, createNewOffer);
+router.get('/', getAllOffers);
+router.get('/:id_oferta', getOfferById);
+router.put('/:id_oferta', upload.single('imagen'), validateOfferPayload, processUploadedImage, editOffer);
+router.delete('/:id_oferta', deleteOffer);
+router.get('/user/:id_usuario', getOffersByUserId);