From 68a1bb406017f154a59b133baaf5d228d96b6c58 Mon Sep 17 00:00:00 2001
From: Sayan Das <sayan.das@segment.com>
Date: Mon, 26 Sep 2022 21:32:05 +0530
Subject: [PATCH 1/3] Added messageId as eventId in Facebook Pixel

---
 integrations/facebook-pixel/lib/index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/integrations/facebook-pixel/lib/index.js b/integrations/facebook-pixel/lib/index.js
index 62dbdc08f..83ed47e7b 100644
--- a/integrations/facebook-pixel/lib/index.js
+++ b/integrations/facebook-pixel/lib/index.js
@@ -135,8 +135,8 @@ FacebookPixel.prototype.loaded = function() {
  * @param {Facade} identify
  */
 
-FacebookPixel.prototype.page = function() {
-  window.fbq('track', 'PageView');
+FacebookPixel.prototype.page = function(track) {
+  window.fbq('track', 'PageView', {}, { eventID: track.proxy('messageId') });
 };
 
 /**

From aa111458c3015da8c151133466c10920bec98dee Mon Sep 17 00:00:00 2001
From: Sayan Das <sayan.das@segment.com>
Date: Tue, 27 Sep 2022 08:19:10 +0530
Subject: [PATCH 2/3] Bump facebook-pixel version

---
 integrations/facebook-pixel/package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/integrations/facebook-pixel/package.json b/integrations/facebook-pixel/package.json
index 8bd306b9b..0b3e0cbfe 100644
--- a/integrations/facebook-pixel/package.json
+++ b/integrations/facebook-pixel/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@segment/analytics.js-integration-facebook-pixel",
   "description": "The Facebook Pixel analytics.js integration.",
-  "version": "2.11.4",
+  "version": "2.11.5",
   "keywords": [
     "analytics.js",
     "analytics.js-integration",

From 2305b9e0626c0525eb9116e07df2f2cbf18542ca Mon Sep 17 00:00:00 2001
From: Gaurav Kochar <gaurav.kochar@segment.com>
Date: Tue, 29 Nov 2022 13:08:19 +0530
Subject: [PATCH 3/3] added a unit test case for page view event

---
 integrations/facebook-pixel/test/index.test.js | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/integrations/facebook-pixel/test/index.test.js b/integrations/facebook-pixel/test/index.test.js
index 4e3a8c5c2..98d2e8a38 100644
--- a/integrations/facebook-pixel/test/index.test.js
+++ b/integrations/facebook-pixel/test/index.test.js
@@ -14,6 +14,16 @@ function assertEventId(spy) {
     throw new Error('Expected eventId on window.fbq.call. Not found.');
   }
 }
+/**
+ * Event ID is generated automatically by Analytics.js, this function
+ * only checks that it was succesfully added as an 4th argument in PageView to a `window.fbq` call.
+ */
+
+function assertEventIdInPageView(spy) {
+  if (!spy.args[0][3].eventID.startsWith('ajs-')) {
+    throw new Error('Expected eventId on window.fbq.call. Not found.');
+  }
+}
 
 describe('Facebook Pixel', function() {
   var analytics;
@@ -256,9 +266,10 @@ describe('Facebook Pixel', function() {
         analytics.stub(window, 'fbq');
       });
 
-      it('should track a pageview', function() {
+      it('should track a pageview along with eventID', function() {
         analytics.page();
-        analytics.called(window.fbq, 'track', 'PageView');
+        analytics.called(window.fbq, 'track', 'PageView', {});
+        assertEventIdInPageView(window.fbq);
       });
     });