Add file watcher service

backend/src/services/fileWatcher.js

@@ -0,0 +1,84 @@
+const chokidar = require('chokidar');
+const path = require('path');
+const fs = require('fs').promises;
+const { db } = require('../database/db');
+const { generateThumbnail } = require('./imageProcessor');
+const logger = require('../utils/logger');
+
+const WATCH_PATH = path.join(__dirname, '../../../storage/events/active');
+
+function startFileWatcher() {
+  const watcher = chokidar.watch(WATCH_PATH, {
+    ignored: /(^|[\/\\])\../, // ignore dotfiles
+    persistent: true,
+    awaitWriteFinish: {
+      stabilityThreshold: 2000,
+      pollInterval: 100
+    }
+  });
+
+  watcher
+    .on('add', async (filePath) => {
+      try {
+        await processNewPhoto(filePath);
+      } catch (error) {
+        logger.error('Error processing new photo:', error);
+      }
+    })
+    .on('unlink', async (filePath) => {
+      try {
+        await removePhoto(filePath);
+      } catch (error) {
+        logger.error('Error removing photo:', error);
+      }
+    });
+
+  logger.info('File watcher started');
+}
+
+async function processNewPhoto(filePath) {
+  const relativePath = path.relative(WATCH_PATH, filePath);
+  const pathParts = relativePath.split(path.sep);
+  
+  if (pathParts.length < 2) return; // Not in correct folder structure
+  
+  const eventSlug = pathParts[0];
+  const photoType = pathParts[1] === 'collages' ? 'collage' : 'individual';
+  
+  // Check if this is an image file
+  const ext = path.extname(filePath).toLowerCase();
+  if (!['.jpg', '.jpeg', '.png', '.webp'].includes(ext)) return;
+  
+  // Find the event
+  const event = await db('events').where({ slug: eventSlug, is_active: true }).first();
+  if (!event) return;
+  
+  // Get file stats
+  const stats = await fs.stat(filePath);
+  
+  // Generate thumbnail
+  const thumbnailPath = await generateThumbnail(filePath);
+  
+  // Add to database
+  await db('photos').insert({
+    event_id: event.id,
+    filename: path.basename(filePath),
+    path: relativePath,
+    thumbnail_path: thumbnailPath,
+    type: photoType,
+    size_bytes: stats.size
+  });
+  
+  logger.info(`Added new photo: ${relativePath}`);
+}
+
+async function removePhoto(filePath) {
+  const relativePath = path.relative(WATCH_PATH, filePath);
+  
+  // Remove from database
+  await db('photos').where({ path: relativePath }).delete();
+  
+  logger.info(`Removed photo: ${relativePath}`);
+}
+
+module.exports = { startFileWatcher };