message templates

README.md

@@ -8,6 +8,8 @@
 
 A module for handling Firebase Cloud Messaging
 
+This is a work in progress, don't use this in production
+
 ## Features
 
 ## Install

examples/simple/index.js

@@ -9,14 +9,59 @@ let broker = new ServiceBroker({
 });
 
 // Load my service
+/**
+ * There are multilple ways to setup firebase admin: 
+ * for full documentation read here:		 
+ * https://firebase.google.com/docs/admin/setup		 
+ * 
+ * -------------------------------------------------------------------
+ * 1- To set the environment variable:
+ * Set the environment variable GOOGLE_APPLICATION_CREDENTIALS to the file path of the JSON file that contains your service account key. 
+ * This variable only applies to your current shell session, so if you open a new session, set the variable again.
+ * 
+ * on Linux or macOS:
+ * export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/service-account-file.json"
+ * 
+ * on Windows (with PowerShell):
+ * $env:GOOGLE_APPLICATION_CREDENTIALS="C:\Users\username\Downloads\service-account-file.json"
+ * For this method, uncomment the bellow line:
+ */
+
+// const app = initializeApp({
+// 	credential: applicationDefault(),
+//	databaseURL: 'https://<DATABASE_NAME>.firebaseio.com'
+// });
+
+	/**
+	 * ------------------------------------------------------------------ 
+	 * 2- Using an OAuth 2.0 refresh token
+	 * The Admin SDK also provides a credential which allows you to authenticate with a Google OAuth2 refresh token.
+	 * For this method, uncomment the bellow line:  
+	 */
+
+//const myRefreshToken = '...'; // Get refresh token from OAuth2 flow		  
+//const app = initializeApp({
+//	credential: refreshToken(myRefreshToken),
+//	databaseURL: 'https://<DATABASE_NAME>.firebaseio.com'
+//});
+
+
+	/**
+	 * ------------------------------------------------------------------ 
+ * 3- If you are deploying your application with Firebase CLI
+ * In this case, the SDK uses Google Application Default Credentials. Because default credentials lookup is fully automated in Google environments, 
+ * with no need to supply environment variables or other configuration, this way of intializing the SDK is strongly recommeneded for applications 
+ * running on Compute Engine, Kubernetes Engine, App Engine, and Cloud Functions.
+ * For this method, uncomment the bellow line:
+ */ 
 broker.createService(MyService);
 
 // Start server
 broker.start().then(() => {
 
 	// Call action
 	broker
-		.call("fcm.test", { name: "John Doe" })
+		.call("fcm.test", { name: "Moleculer User!" })
 		.then(broker.logger.info)
 		.catch(broker.logger.error);