campagne tracking

backend/src/index.js

@@ -37,7 +37,7 @@ const mailingListRoutes = require('./routes/mailingListAdmin');
 const emailCampaignListRoutes = require('./routes/emailCampaignsAdmin');
 const subscribersAdminRoutes = require('./routes/subscribersAdmin');
 const subscribersRoutes = require('./routes/subscribers');
-
+const emailTrackingRoutes = require('./routes/emailTracking');
 // Create Express app
 const app = express();
 const port = config.port || 4000;
@@ -323,6 +323,7 @@ app.delete('/api/image/product/:filename', adminAuthMiddleware(pool, query), (re
 app.use('/api/admin/settings', settingsAdminRoutes(pool, query, adminAuthMiddleware(pool, query)));
 app.use('/api/products', productRoutes(pool, query));
 app.use('/api/subscribers', subscribersRoutes(pool, query));
+app.use('/api/email', emailTrackingRoutes(pool, query));
 
 app.use('/api/auth', authRoutes(pool, query));
 app.use('/api/user/orders', userOrdersRoutes(pool, query, authMiddleware(pool, query)));

backend/src/routes/emailCampaignsAdmin.js

@@ -917,6 +917,8 @@ async function sendCampaignEmails(campaignId, campaign, subscribers) {
       `;
       
       queryParams.push(parseInt(pageSize, 10), offset);
+      console.log("queryParams", queryParams)
+      console.log("activityQuery", activityQuery)
       const activityResult = await query(activityQuery, queryParams);
       
       res.json({

backend/src/routes/emailTracking.js

@@ -0,0 +1,136 @@
+const express = require('express');
+const router = express.Router();
+
+module.exports = (pool, query) => {
+  /**
+   * Handle email tracking for opens and clicks
+   * GET /api/email/track
+   * 
+   * Query parameters:
+   * - c: Campaign ID
+   * - s: Subscriber ID
+   * - t: Type of tracking (open, click)
+   * - l: Link ID (only for click tracking)
+   * - u: Original URL (only for click tracking, encoded)
+   */
+  router.get('/track', async (req, res, next) => {
+    try {
+      const { c: campaignId, s: subscriberId, t: type, l: linkId, u: encodedUrl } = req.query;
+      
+      // Validate required parameters
+      if (!campaignId || !subscriberId || !type) {
+        // For tracking pixels, return a 1x1 transparent GIF to avoid breaking email rendering
+        if (type === 'open') {
+          return sendTrackingPixel(res);
+        }
+        
+        // For click tracking, redirect to homepage if parameters are invalid
+        if (type === 'click' && encodedUrl) {
+          return res.redirect(decodeURIComponent(encodedUrl));
+        }
+        
+        return res.redirect('/');
+      }
+      
+      // Process tracking event asynchronously (don't wait for DB operations)
+      processTrackingEvent(campaignId, subscriberId, type, linkId, encodedUrl)
+        .catch(err => console.error('Error processing tracking event:', err));
+      
+      // Respond based on tracking type
+      if (type === 'open') {
+        // For opens, return a 1x1 transparent GIF
+        return sendTrackingPixel(res);
+      } else if (type === 'click' && encodedUrl) {
+        // For clicks, redirect to the original URL
+        return res.redirect(decodeURIComponent(encodedUrl));
+      } else {
+        // Fallback to homepage
+        return res.redirect('/');
+      }
+    } catch (error) {
+      console.error('Tracking error:', error);
+      
+      // Always provide a response, even on error
+      if (req.query.t === 'open') {
+        return sendTrackingPixel(res);
+      } else {
+        return res.redirect('/');
+      }
+    }
+  });
+  
+  /**
+   * Process a tracking event and update subscriber activity
+   * @param {string} campaignId - Campaign ID
+   * @param {string} subscriberId - Subscriber ID
+   * @param {string} type - Event type (open, click)
+   * @param {string} linkId - Link ID for click events
+   * @param {string} encodedUrl - Original URL for click events
+   * @returns {Promise<void>}
+   */
+  async function processTrackingEvent(campaignId, subscriberId, type, linkId, encodedUrl) {
+    try {
+      // Get client IP and user agent
+      const details = {};
+      
+      // Record the tracking event in subscriber_activity
+      if (type === 'open') {
+        // Check if an open has already been recorded for this subscriber/campaign
+        const existingOpen = await query(
+          `SELECT id FROM subscriber_activity 
+           WHERE subscriber_id = $1 AND campaign_id = $2 AND type = 'open'
+           LIMIT 1`,
+          [subscriberId, campaignId]
+        );
+        
+        // Only record first open to avoid duplicate counting
+        if (existingOpen.rows.length === 0) {
+          await query(
+            `INSERT INTO subscriber_activity (subscriber_id, campaign_id, type, details)
+             VALUES ($1, $2, 'open', $3)`,
+            [subscriberId, campaignId, JSON.stringify(details)]
+          );
+          
+          // Update subscriber's last_activity_at
+          await query(
+            `UPDATE subscribers SET last_activity_at = NOW() WHERE id = $1`,
+            [subscriberId]
+          );
+        }
+      } else if (type === 'click' && linkId) {
+        // Record the click with the link ID
+        await query(
+          `INSERT INTO subscriber_activity (subscriber_id, campaign_id, type, link_id, url, details)
+           VALUES ($1, $2, 'click', $3, $4, $5)`,
+          [subscriberId, campaignId, linkId, decodeURIComponent(encodedUrl), JSON.stringify(details)]
+        );
+        
+        // Update subscriber's last_activity_at
+        await query(
+          `UPDATE subscribers SET last_activity_at = NOW() WHERE id = $1`,
+          [subscriberId]
+        );
+      }
+    } catch (error) {
+      console.error('Error processing tracking event:', error);
+      // Don't throw - we want to fail silently for tracking
+    }
+  }
+  
+  /**
+   * Send a 1x1 transparent GIF for tracking pixels
+   * @param {Object} res - Express response object
+   */
+  function sendTrackingPixel(res) {
+    // 1x1 transparent GIF in base64
+    const transparentGif = Buffer.from('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7', 'base64');
+    
+    res.set('Content-Type', 'image/gif');
+    res.set('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
+    res.set('Pragma', 'no-cache');
+    res.set('Expires', '0');
+    res.send(transparentGif);
+  }
+  
+  return router;
+};

backend/src/services/emailService.js

@@ -445,7 +445,7 @@ const emailService = {
     // Generate an unsubscribe token
     const token = uuidv4();
     
-    // Store the token in the database (this would be done asynchronously)
+    
     this.storeUnsubscribeToken(subscriberId, token, campaignId);
     
     return `${this.siteUrl}/api/subscribers/unsubscribe?token=${token}`;