Fix bazaar vendor QR code generation and payment status update

Backend/controllers/bazaarVendorApplicationsController.js

@@ -217,6 +217,8 @@ const updateBazaarVendorApplication = async (req, res) => {
     const doc = await BazaarVendorApplication.findById(id);
     if (!doc) return res.status(404).json({ error: 'Not found' });
 
+    const previousStatus = doc.status;
+
     if (req.body.vendorId) {
       if (!isValidObjectId(req.body.vendorId)) {
         return res.status(400).json({ error: 'Invalid vendorId' });
@@ -244,11 +246,100 @@ const updateBazaarVendorApplication = async (req, res) => {
     }
 
     if (req.body.status) doc.status = req.body.status;
+    if (req.body.paidAt) doc.paidAt = req.body.paidAt;
+    if (req.body.stripeSessionId) doc.stripeSessionId = req.body.stripeSessionId;
 
     await doc.save();
     const refreshed = await BazaarVendorApplication.findById(id)
       .populate('bazaarId', 'name location description startDate endDate');
 
+    // If status changed to accepted, payment is complete - generate and send QR codes
+    if (refreshed.status === 'accepted' && previousStatus !== 'accepted') {
+
+      console.log(`🎫 Payment completed for bazaar application ${id}, generating QR codes...`);
+
+      try {
+        // Update payment status to paid
+        await BazaarVendorApplication.findByIdAndUpdate(id, { paymentStatus: 'paid' });
+
+        // Generate QR codes for all attendees
+        if (refreshed.attendeeNames && refreshed.attendeeNames.length > 0) {
+          const qrCodes = [];
+
+          for (let i = 0; i < refreshed.attendeeNames.length; i++) {
+            const attendeeName = refreshed.attendeeNames[i];
+            const attendeeEmail = refreshed.attendeeEmails && refreshed.attendeeEmails[i] ? refreshed.attendeeEmails[i] : '';
+
+            // Create QR code data with attendee information
+            const qrData = {
+              applicationId: refreshed._id.toString(),
+              applicationType: 'bazaar',
+              vendorId: refreshed.vendorId.toString(),
+              attendeeName: attendeeName,
+              attendeeEmail: attendeeEmail,
+              attendeeIndex: i,
+              bazaarName: refreshed.bazaarId?.name || 'Bazaar Event',
+              boothSize: refreshed.boothSize,
+              generatedAt: new Date().toISOString()
+            };
+
+            // Generate QR code image
+            const qrCodeDataUrl = await QRCode.toDataURL(JSON.stringify(qrData), {
+              errorCorrectionLevel: 'H',
+              type: 'image/png',
+              width: 300,
+              margin: 2
+            });
+
+            qrCodes.push({
+              attendeeName: attendeeName,
+              attendeeEmail: attendeeEmail,
+              qrCodeDataUrl: qrCodeDataUrl,
+              qrData: qrData
+            });
+
+            // Send individual QR code to attendee if email provided
+            if (attendeeEmail) {
+              try {
+                const vendor = await Vendor.findById(refreshed.vendorId);
+                await sendAttendeeQRCodeEmail(
+                  attendeeEmail,
+                  attendeeName,
+                  qrCodeDataUrl,
+                  refreshed.bazaarId?.name || 'Bazaar Event',
+                  vendor?.companyName || 'Vendor',
+                  'bazaar'
+                );
+                console.log(`✅ QR code sent to attendee: ${attendeeName} (${attendeeEmail})`);
+              } catch (emailError) {
+                console.error(`⚠️ Failed to send QR code to attendee ${attendeeEmail}:`, emailError.message);
+              }
+            }
+          }
+
+          // Send all QR codes to vendor
+          const vendor = await Vendor.findById(refreshed.vendorId);
+          if (vendor && qrCodes.length > 0) {
+            try {
+              await sendVendorQRCodesEmail(
+                vendor.email,
+                vendor.companyName,
+                qrCodes,
+                refreshed.bazaarId?.name || 'Bazaar Event',
+                'bazaar'
+              );
+              console.log(`✅ All QR codes sent to vendor: ${vendor.companyName} (${vendor.email})`);
+            } catch (emailError) {
+              console.error(`⚠️ Failed to send QR codes to vendor:`, emailError.message);
+            }
+          }
+        }
+      } catch (qrError) {
+        console.error('⚠️ Error generating/sending QR codes:', qrError.message);
+        // Don't fail the update if QR generation fails - just log the error
+      }
+    }
+
     res.status(200).json(formatApplication(refreshed, req));
   } catch (err) {
     res.status(400).json({ error: err.message });