feat!(ios): update Firebase Messaging to ~> 8.1.1 (#152)

* feat(ios): update IOS_FIREBASE_MESSAGING_VERSION to > 8
* chore(ios): removed unused methods & commented out code
* fix(ios): use new notification name FIRMessagingRegistrationTokenRefreshedNotification

Co-authored-by: Adri Van Houdt <adri.van.houdt@gmail.com>

plugin.xml

@@ -97,7 +97,7 @@
   </platform>
 
   <platform name="ios">
-    <preference name="IOS_FIREBASE_MESSAGING_VERSION" default="~> 6.32.2"/>
+    <preference name="IOS_FIREBASE_MESSAGING_VERSION" default="~> 8.1.1"/>
 
     <config-file target="config.xml" parent="/*">
       <feature name="PushNotification">

src/ios/PushPlugin.h

@@ -69,7 +69,6 @@
 
 - (void)willSendDataMessageWithID:(NSString *)messageID error:(NSError *)error;
 - (void)didSendDataMessageWithID:(NSString *)messageID;
-- (void)didDeleteMessagesOnServer;
 
 // VoIP Features
 - (void)pushRegistry:(PKPushRegistry *)registry didUpdatePushCredentials:(PKPushCredentials *)credentials forType:(NSString *)type;

src/ios/PushPlugin.m

@@ -31,7 +31,7 @@
 
 @import Firebase;
 @import FirebaseCore;
-@import FirebaseInstanceID;
+// @import FirebaseInstanceID;
 @import FirebaseMessaging;
 
 @implementation PushPlugin : CDVPlugin
@@ -55,15 +55,15 @@ @implementation PushPlugin : CDVPlugin
 
 -(void)initRegistration;
 {
-    [[FIRInstanceID instanceID] instanceIDWithHandler:^(FIRInstanceIDResult * _Nullable result, NSError * _Nullable error) {
+    [[FIRMessaging messaging] tokenWithCompletion:^(NSString *token, NSError *error) {
         if (error != nil) {
-            NSLog(@"Error fetching remote instance ID: %@", error);
+            NSLog(@"Error getting FCM registration token: %@", error);
         } else {
-            NSLog(@"Remote instance ID (FCM Registration) Token: %@", result.token);
+            NSLog(@"FCM registration token: %@", token);
 
-            [self setFcmRegistrationToken: result.token];
+            [self setFcmRegistrationToken: token];
 
-            NSString* message = [NSString stringWithFormat:@"Remote InstanceID token: %@", result.token];
+            NSString* message = [NSString stringWithFormat:@"Remote InstanceID token: %@", token];
 
             id topics = [self fcmTopics];
             if (topics != nil) {
@@ -74,7 +74,7 @@ -(void)initRegistration;
                 }
             }
 
-            [self registerWithToken:result.token];
+            [self registerWithToken: token];
         }
     }];
 }
@@ -90,13 +90,6 @@ - (void)onTokenRefresh {
 }
 
 // contains error info
-- (void)sendDataMessageFailure:(NSNotification *)notification {
-    NSLog(@"sendDataMessageFailure");
-}
-- (void)sendDataMessageSuccess:(NSNotification *)notification {
-    NSLog(@"sendDataMessageSuccess");
-}
-
 - (void)didSendDataMessageWithID:messageID {
     NSLog(@"didSendDataMessageWithID");
 }
@@ -105,13 +98,6 @@ - (void)willSendDataMessageWithID:messageID error:error {
     NSLog(@"willSendDataMessageWithID");
 }
 
-- (void)didDeleteMessagesOnServer {
-    NSLog(@"didDeleteMessagesOnServer");
-    // Some messages sent to this device were deleted on the GCM server before reception, likely
-    // because the TTL expired. The client should notify the app server of this, so that the app
-    // server can resend those messages.
-}
-
 - (void)unregister:(CDVInvokedUrlCommand*)command;
 {
     NSArray* topics = [command argumentAtIndex:0];
@@ -178,20 +164,8 @@ - (void)init:(CDVInvokedUrlCommand*)command;
     } else {
         NSLog(@"Push Plugin VoIP missing or false");
         [[NSNotificationCenter defaultCenter]
-         addObserver:self selector:@selector(onTokenRefresh)
-         name:kFIRInstanceIDTokenRefreshNotification object:nil];
-
-        [[NSNotificationCenter defaultCenter]
-         addObserver:self selector:@selector(sendDataMessageFailure:)
-         name:FIRMessagingSendErrorNotification object:nil];
-
-        [[NSNotificationCenter defaultCenter]
-         addObserver:self selector:@selector(sendDataMessageSuccess:)
-         name:FIRMessagingSendSuccessNotification object:nil];
-
-        [[NSNotificationCenter defaultCenter]
-         addObserver:self selector:@selector(didDeleteMessagesOnServer)
-         name:FIRMessagingMessagesDeletedNotification object:nil];
+          addObserver:self selector:@selector(onTokenRefresh)
+          name:FIRMessagingRegistrationTokenRefreshedNotification object:nil];
 
         [self.commandDelegate runInBackground:^ {
             NSLog(@"Push Plugin register called");