Implement in-app notification did show callback (#397)

* Implement in-app notification did show callback

* Update changelog

CHANGELOG.md

@@ -11,6 +11,7 @@ All notable changes to this project will be documented in this file.
   - `getUserLastVisitTs()`: Get timestamp of user's last app visit
   - `getUserAppLaunchCount()`: Get total number of times user has launched the app
   - `getUserEventLogHistory()`: Get full event history for current user
+- Adds `inAppNotificationDidShow:` to the `CleverTapInAppNotificationDelegate` delegate.
 
 #### API Changes
 

CleverTapSDK/CleverTapInAppNotificationDelegate.h

@@ -38,4 +38,13 @@
 @optional
 - (void)inAppNotificationButtonTappedWithCustomExtras:(NSDictionary *)customExtras;
 
+/*!
+ @discussion
+ This is called when an in-app notification is rendered.
+ 
+ @param notification The notification JSON object for this notification.
+ */
+@optional
+- (void)inAppNotificationDidShow:(NSDictionary *)notification;
+
 @end

CleverTapSDK/InApps/CTInAppDisplayManager.m

@@ -514,6 +514,12 @@ - (void)displayNotification:(CTInAppNotification*)notification {
 #endif
 }
 
+- (void)notifyNotificationDidShow:(CTInAppNotification *)notification {
+    if (self.inAppNotificationDelegate && [self.inAppNotificationDelegate respondsToSelector:@selector(inAppNotificationDidShow:)]) {
+        [self.inAppNotificationDelegate inAppNotificationDidShow:notification.jsonDescription];
+    }
+}
+
 - (void)notifyNotificationDismissed:(CTInAppNotification *)notification {
     if (self.inAppNotificationDelegate && [self.inAppNotificationDelegate respondsToSelector:@selector(inAppNotificationDismissedWithExtras:andActionExtras:)]) {
         NSDictionary *extras;
@@ -589,6 +595,7 @@ - (void)notificationDidShow:(CTInAppNotification*)notification {
     CleverTapLogInternal(self.config.logLevel, @"%@: InApp did show: %@", self, notification.campaignId);
     [self.instance recordInAppNotificationStateEvent:NO forNotification:notification andQueryParameters:nil];
     [self.inAppFCManager didShow:notification];
+    [self notifyNotificationDidShow:notification];
 }
 
 - (void)notifyNotificationButtonTappedWithCustomExtras:(NSDictionary *)customExtras {