Merge add and delete Favorite Music Functions

Sources/justMUSIC/lib/services/MusicService.dart

@@ -29,7 +29,7 @@ class MusicService {
     }
   }
 
-  addFavoriteMusic(String id) async {
+  Future<bool> addOrDeleteFavoriteMusic(String id) async {
     var userRef = await FirebaseFirestore.instance
         .collection("users")
         .doc(MyApp.userViewModel.userCurrent.id);
@@ -39,8 +39,11 @@ class MusicService {
     if (!musicFavorite.contains(id)) {
       musicFavorite.add(id);
       await userRef.update({"musics_likes": musicFavorite});
+      return false;
     } else {
-      print("Add error: The music is not in the user's favorite music list");
+      musicFavorite.remove(id);
+      await userRef.update({"musics_likes": musicFavorite});
+      return true;
     }
   }
 }

Sources/justMUSIC/lib/services/NotificationService.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'package:http/http.dart' as http;
 
 import '../main.dart';
+import '../values/keys.dart';
 
 class NotificationService {
   sendPushMessage(String token, String title, String body) async {
@@ -10,7 +11,7 @@ class NotificationService {
           headers: <String, String>{
             'Content-Type': 'application/json',
             'Authorization':
-                'key=AAAA56TmIPg:APA91bFeKMr_i6CbUuuUdFI1XkdaNE2A7OVHzxrPIsOSlDfhR6qzZwof7JNGxthWUKj1dRHQMheWNYaLbf3AtXUp9o4DX_gB2073yR4urqUEh9CjvnxVws_9g1cWMgmFS3EpaQEA3icC'
+                'key=$keyApiFirebase'
           },
           body: jsonEncode(<String, dynamic>{
             'priority': 'high',

Sources/justMUSIC/lib/values/keys.dart

@@ -1,3 +1,5 @@
 const geoKey = "85a2724ad38b3994c2b7ebe1d239bbff";
 const clientId = "d9b82921bbdf43efa15d0c34c28c6f93";
 const clientSecret = "ba01687f59ea4ab7ad00c769e89e44d8";
+const keyApiFirebase =
+    "AAAA56TmIPg:APA91bFeKMr_i6CbUuuUdFI1XkdaNE2A7OVHzxrPIsOSlDfhR6qzZwof7JNGxthWUKj1dRHQMheWNYaLbf3AtXUp9o4DX_gB2073yR4urqUEh9CjvnxVws_9g1cWMgmFS3EpaQEA3icC";

Sources/justMUSIC/lib/view_model/MusicViewModel.dart

@@ -245,18 +245,9 @@ class MusicViewModel {
     }
   }
 
-  addFavoriteMusic(String id) async {
+  Future<bool> addOrDeleteFavoriteMusic(String id) async {
     try {
-      await _musicService.addFavoriteMusic(id);
-    } catch (e) {
-      print(e);
-      rethrow;
-    }
-  }
-
-  deleteFavoriteMusic(String id) async {
-    try {
-      await _musicService.deleteFavoriteMusic(id);
+      return await _musicService.addOrDeleteFavoriteMusic(id);
     } catch (e) {
       print(e);
       rethrow;