initialize intercom with segment anonymous_id

lib/index.js

@@ -64,7 +64,35 @@ Intercom.prototype.loaded = function() {
 
 Intercom.prototype.page = function(page) {
   var integrationSettings = page.options(this.name);
-  this.bootOrUpdate({}, integrationSettings);
+
+  if (page.obj.name === '_boot') {
+    this.booted = false;
+  }
+
+  var traits = {};
+
+  if (this.analytics
+      && this.analytics.user
+      && this.analytics.user()) {
+    var anonymousId = this.analytics.user().anonymousId();
+    var userId = this.analytics.user().id();
+    var userTraits = this.analytics.user().traits();
+
+    if (anonymousId) {
+      traits.anonymous_id = anonymousId;
+    }
+
+    if (userId) {
+      traits.id = userId;
+      traits.user_id = userId;
+    }
+
+    if (userTraits && Object.keys(userTraits).length > 0) {
+      traits = Object.assign({},traits, userTraits);
+    }
+  }
+
+  this.bootOrUpdate(traits, integrationSettings);
 };
 
 /**

test/index.test.js

@@ -86,12 +86,56 @@ describe('Intercom', function() {
       it('should call boot first and update subsequently', function() {
         analytics.page();
         analytics.called(window.Intercom, 'boot', {
-          app_id: options.appId
+          app_id: options.appId,
+          anonymous_id: analytics.user().anonymousId()
+        });
+
+        analytics.page();
+        analytics.called(window.Intercom, 'update', {
+          app_id: options.appId,
+          anonymous_id: analytics.user().anonymousId()
+        });
+      });
+
+      it('should call boot if used with _boot', function() {
+        analytics.page();
+        analytics.called(window.Intercom, 'boot', {
+          app_id: options.appId,
+          anonymous_id: analytics.user().anonymousId()
         });
 
         analytics.page();
         analytics.called(window.Intercom, 'update', {
-          app_id: options.appId
+          app_id: options.appId,
+          anonymous_id: analytics.user().anonymousId()
+        });
+
+        analytics.page('_boot');
+        analytics.calledThrice(window.Intercom, 'boot', {
+          app_id: options.appId,
+          anonymous_id: analytics.user().anonymousId()
+        });
+      });
+
+      describe('page after identify', function() {
+        beforeEach(function() {
+          analytics.stub(analytics, 'user', function() {
+            return {
+              id:function() { return 'id';},
+              anonymousId:function() { return 'anonymousId';},
+              traits:function() { return undefined;}
+            };
+          });
+        });
+
+        it('should send an id', function() {
+          analytics.page();
+          analytics.called(window.Intercom, 'boot', {
+            app_id: options.appId,
+            id: 'id',
+            user_id: 'id',
+            anonymous_id: 'anonymousId'
+          });
         });
       });
     });
@@ -462,7 +506,8 @@ describe('Intercom', function() {
         analytics.page({}, integrationSettings);
         analytics.called(window.Intercom, 'boot', {
           app_id: options.appId,
-          hide_default_launcher: true
+          hide_default_launcher: true,
+          anonymous_id: analytics.user().anonymousId()
         });
       });