adds firebase connection and notifications

- notification handler pushes background and
  foreground notifications to the phone directly
- firebase connection pushes remote notifications
  in background and foreground
- firebase unique token currently logged only, should
  be send directly to server via rest

app/build.gradle

@@ -38,6 +38,7 @@ dependencies {
 
     implementation 'com.google.android.gms:play-services-mlkit-barcode-scanning:16.1.4'
     implementation 'com.android.volley:volley:1.2.0'
+    implementation 'com.google.firebase:firebase-messaging-ktx:21.0.1'
     def camerax_version = "1.0.2"
     implementation 'androidx.core:core-ktx:1.3.2'
     implementation 'androidx.appcompat:appcompat:1.2.0'
@@ -54,3 +55,5 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 }
+
+apply plugin: 'com.google.gms.google-services'  // Google Play services Gradle plugin

app/src/androidTest/java/com/maenle/bump/MessageProcessorTest.kt

@@ -1,9 +1,9 @@
-package com.example.bump
+package com.maenle.bump
 
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
-import com.example.bump.util.LocalData
+import com.maenle.bump.util.LocalData
-import com.example.bump.util.MessageProcessor
+import com.maenle.bump.util.MessageProcessor
 import org.junit.Assert
 import org.junit.Test
 import org.junit.runner.RunWith

app/src/androidTest/java/com/maenle/bump/RestCryptTest.kt

@@ -1,10 +1,10 @@
-package com.example.bump
+package com.maenle.bump
 
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import com.example.bump.util.Message
+import com.maenle.bump.util.Message
-import com.example.bump.util.MessageProcessor
+import com.maenle.bump.util.MessageProcessor
-import com.example.bump.util.RestSingleton
+import com.maenle.bump.util.RestSingleton
 import org.json.JSONArray
 import org.json.JSONObject
 

app/src/main/AndroidManifest.xml

@@ -7,8 +7,9 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.INTERNET" />
 
+
     <application
-        android:name="com.example.bump.ui.MainApplication"
+        android:name=".ui.MainApplication"
         android:allowBackup="true"
         android:usesCleartextTraffic="true"
         android:icon="@mipmap/ic_launcher"
@@ -16,8 +17,29 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.BumpForAndroid">
+        <service
+            android:name=".MyFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
+            </intent-filter>
+        </service>
+
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@drawable/ic_launcher_foreground"/>
+
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_color"
+            android:resource="@color/black"/> <!-- [END fcm_default_icon] -->
+        <!-- [START fcm_default_channel] -->
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_channel_id"
+            android:value="@string/bump_notification_channel_id" />
+        <!-- [END fcm_default_channel] -->
+
         <activity
-            android:name="com.example.bump.ui.MainActivity"
+            android:name=".ui.MainActivity"
             tools:node="merge"
             android:exported="true"
             android:label="@string/app_name"

app/src/main/java/com/example/bump/receiver/AlarmReceiver.kt

@@ -1,28 +0,0 @@
-package com.example.bump.receiver
-
-import android.app.NotificationManager
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import android.widget.Toast
-import androidx.core.content.ContextCompat
-import com.example.bump.util.sendNotification
-import com.maenle.bump.R
-
-class AlarmReceiver: BroadcastReceiver() {
-
-    override fun onReceive(context: Context, intent: Intent) {
-
-        val notificationManager = ContextCompat.getSystemService(
-            context,
-            NotificationManager::class.java
-        ) as NotificationManager
-
-        notificationManager.sendNotification(
-            "Hello",
-            context
-        )
-
-    }
-
-}

app/src/main/java/com/example/bump/receiver/SnoozeReceiver.kt

@@ -1,42 +0,0 @@
-package com.example.bump.receiver
-
-import android.app.AlarmManager
-import android.app.NotificationManager
-import android.app.PendingIntent
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import android.os.SystemClock
-import android.text.format.DateUtils
-import androidx.core.app.AlarmManagerCompat
-import androidx.core.content.ContextCompat
-
-class SnoozeReceiver: BroadcastReceiver() {
-    private val REQUEST_CODE = 0
-
-    override fun onReceive(context: Context, intent: Intent) {
-        val triggerTime = SystemClock.elapsedRealtime() + DateUtils.MINUTE_IN_MILLIS
-
-        val notifyIntent = Intent(context, AlarmReceiver::class.java)
-        val notifyPendingIntent = PendingIntent.getBroadcast(
-            context,
-            REQUEST_CODE,
-            notifyIntent,
-            PendingIntent.FLAG_UPDATE_CURRENT
-        )
-        val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
-        AlarmManagerCompat.setExactAndAllowWhileIdle(
-            alarmManager,
-            AlarmManager.ELAPSED_REALTIME_WAKEUP,
-            triggerTime,
-            notifyPendingIntent
-        )
-
-        val notificationManager = ContextCompat.getSystemService(
-            context,
-            NotificationManager::class.java
-        ) as NotificationManager
-        notificationManager.cancelAll()
-    }
-
-}

app/src/main/java/com/maenle/bump/MyFirebaseMessagingService.kt

@@ -0,0 +1,78 @@
+package com.maenle.bump
+
+
+import android.app.NotificationManager
+import android.util.Log
+import androidx.core.content.ContextCompat
+import com.maenle.bump.util.sendNotification
+import com.google.firebase.messaging.FirebaseMessagingService
+import com.google.firebase.messaging.RemoteMessage
+
+class MyFirebaseMessagingService : FirebaseMessagingService() {
+
+    /**
+     * Called when message is received.
+     *
+     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
+     */
+    // [START receive_message]
+    override fun onMessageReceived(remoteMessage: RemoteMessage) {
+        // Not getting messages here? See why this may be: https://goo.gl/39bRNJ
+        Log.d(TAG, "From: ${remoteMessage.from}")
+
+        // TODO Step 3.5 check messages for data
+        // Check if message contains a data payload.
+        remoteMessage.data.let {
+            Log.d(TAG, "Message data payload: " + remoteMessage.data)
+        }
+
+        // TODO Step 3.6 check messages for notification and call sendNotification
+        // Check if message contains a notification payload.
+        remoteMessage.notification?.let {
+            Log.d(TAG, "Message Notification Body: ${it.body}")
+            sendNotification(it.body!!)
+        }
+    }
+    // [END receive_message]
+
+    //TODO Step 3.2 log registration token
+    // [START on_new_token]
+    /**
+     * Called if InstanceID token is updated. This may occur if the security of
+     * the previous token had been compromised. Note that this is called when the InstanceID token
+     * is initially generated so this is where you would retrieve the token.
+     */
+    override fun onNewToken(token: String) {
+        Log.d(TAG, "Refreshed token: $token")
+
+        // If you want to send messages to this application instance or
+        // manage this apps subscriptions on the server side, send the
+        // Instance ID token to your app server.
+        sendRegistrationToServer(token)
+    }
+    // [END on_new_token]
+
+
+    /**
+     * Persist token to third-party servers.
+     *
+     * @param token The new token.
+     */
+    private fun sendRegistrationToServer(token: String?) {
+        // TODO: Implement this method to send token to your app server.
+    }
+
+    /**
+     * Create and show a simple notification containing the received FCM message.
+     *
+     * @param messageBody FCM message body received.
+     */
+    private fun sendNotification(messageBody: String) {
+        val notificationManager = ContextCompat.getSystemService(applicationContext, NotificationManager::class.java) as NotificationManager
+        notificationManager.sendNotification(messageBody, applicationContext)
+    }
+
+    companion object {
+        private const val TAG = "MyFirebaseMsgService"
+    }
+}

app/src/main/java/com/maenle/bump/ui/CameraFragment.kt

@@ -1,4 +1,4 @@
-package com.example.bump.ui
+package com.maenle.bump.ui
 
 import android.Manifest
 import android.annotation.SuppressLint
@@ -31,8 +31,8 @@ import kotlin.math.min
 import android.view.WindowInsets
 
 import android.graphics.Insets
-import com.example.bump.util.BumpProcessor
+import com.maenle.bump.util.BumpProcessor
-import com.example.bump.util.CameraXViewModel
+import com.maenle.bump.util.CameraXViewModel
 
 
 class CameraFragment: Fragment() {

app/src/main/java/com/maenle/bump/ui/FirstFragment.kt

@@ -1,17 +1,20 @@
-package com.example.bump.ui
+package com.maenle.bump.ui
 
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.graphics.Color
-import android.os.Build
 import android.os.Bundle
 import androidx.fragment.app.Fragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
+import androidx.core.content.ContextCompat
 import androidx.navigation.fragment.findNavController
-import com.example.bump.util.BumpProcessor
+import com.google.firebase.messaging.FirebaseMessaging
-import com.example.bump.util.RestSingleton
+import com.maenle.bump.util.BumpProcessor
+import com.maenle.bump.util.RestSingleton
+import com.maenle.bump.util.sendNotification
 import com.maenle.bump.R
 import com.maenle.bump.databinding.FragmentFirstBinding
 import org.json.JSONArray
@@ -30,6 +33,7 @@ class FirstFragment : Fragment() {
     private lateinit var rest: RestSingleton
     private lateinit var log: JSONArray
 
+
     private lateinit var bump: BumpProcessor
     override fun onCreateView(
             inflater: LayoutInflater, container: ViewGroup?,
@@ -40,12 +44,21 @@ class FirstFragment : Fragment() {
         bump = BumpProcessor(requireContext())
 
 
-        // TODO: Step 1.7 call create channel
         createChannel(
             getString(R.string.bump_notification_channel_id),
             getString(R.string.bump_notification_channel_name)
         )
 
+        /*
+        val notificationManager = ContextCompat.getSystemService(
+            requireContext(),
+            NotificationManager::class.java
+        ) as NotificationManager
+        notificationManager.sendNotification(getString(R.string.notification), requireContext())
+         */
+
+        subscribeTopic()
+
         return binding.root
     }
 
@@ -62,13 +75,11 @@ class FirstFragment : Fragment() {
     }
 
     private fun createChannel(channelId: String, channelName: String) {
-        // TODO: Step 1.6 START create a channel
         val notificationChannel = NotificationChannel(
             channelId,
             channelName,
-            // TODO: Step 2.4 change importance
             NotificationManager.IMPORTANCE_HIGH
-        )// TODO: Step 2.6 disable badges for this channel
+        )
             .apply {
                 setShowBadge(false)
             }
@@ -82,12 +93,24 @@ class FirstFragment : Fragment() {
             NotificationManager::class.java
         )
         notificationManager.createNotificationChannel(notificationChannel)
+    }
 
-        // TODO: Step 1.6 END create a channel
+    private fun subscribeTopic() {
+        // [START subscribe_topic]
+        FirebaseMessaging.getInstance().subscribeToTopic(TOPIC)
+            .addOnCompleteListener { task ->
+                var message = getString(R.string.message_subscribed)
+                if (!task.isSuccessful) {
+                    message = getString(R.string.message_subscribe_failed)
+                }
+                Toast.makeText(context, message, Toast.LENGTH_SHORT).show()
+            }
+        // [END subscribe_topics]
     }
 
     companion object {
         fun newInstance() = FirstFragment()
+        private val TOPIC = "Bump"
     }
 
 

app/src/main/java/com/maenle/bump/ui/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.bump.ui
+package com.maenle.bump.ui
 
 import android.os.Bundle
 import com.google.android.material.snackbar.Snackbar

app/src/main/java/com/maenle/bump/ui/MainApplication.kt

@@ -1,9 +1,9 @@
-package com.example.bump.ui
+package com.maenle.bump.ui
 
 import android.app.Application
 import android.content.Context
-import com.example.bump.util.BumpProcessor
+import com.maenle.bump.util.BumpProcessor
-import com.example.bump.util.RestSingleton
+import com.maenle.bump.util.RestSingleton
 
 // Not object class. AndroidManifest.xml error happen.
 class MainApplication : Application() {

app/src/main/java/com/maenle/bump/ui/SecondFragment.kt

@@ -1,11 +1,10 @@
-package com.example.bump.ui
+package com.maenle.bump.ui
 
 import android.os.Bundle
 import androidx.fragment.app.Fragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.navigation.fragment.findNavController
 import com.maenle.bump.databinding.FragmentSecondBinding
 
 /**

app/src/main/java/com/maenle/bump/util/BumpProcessor.kt

@@ -1,4 +1,4 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import android.content.Context
 import android.os.Handler

app/src/main/java/com/maenle/bump/util/CameraXViewModel.kt

@@ -1,4 +1,4 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import android.app.Application
 import android.util.Log

app/src/main/java/com/maenle/bump/util/LocalData.kt

@@ -1,4 +1,4 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import android.content.Context
 import android.content.Context.MODE_PRIVATE

app/src/main/java/com/maenle/bump/util/Message.kt

@@ -1,8 +1,7 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import java.time.LocalDate
 import java.time.format.DateTimeFormatter
-import java.util.*
 
 class Message(var sender: String, var data: String, timestamp: String) {
     val timestamp = LocalDate.parse(timestamp, DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSSSS"))

app/src/main/java/com/maenle/bump/util/MessageProcessor.kt

@@ -1,4 +1,4 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import java.util.Base64
 import javax.crypto.spec.PBEKeySpec
@@ -7,7 +7,7 @@ import com.macasaet.fernet.Key
 import com.macasaet.fernet.Token
 import com.macasaet.fernet.StringValidator
 import com.macasaet.fernet.Validator
-import com.example.bump.ui.MainActivity
+import com.maenle.bump.ui.MainActivity
 import java.math.BigInteger
 import java.security.SecureRandom
 import java.time.Duration

app/src/main/java/com/maenle/bump/util/NotificationUtil.kt

@@ -1,20 +1,19 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
+import android.annotation.SuppressLint
 import android.app.NotificationManager
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
 import android.graphics.BitmapFactory
 import androidx.core.app.NotificationCompat
-import com.example.bump.receiver.SnoozeReceiver
+import com.maenle.bump.ui.MainActivity
-import com.example.bump.ui.MainActivity
 import com.maenle.bump.R
 
 // Notification ID.
 private val NOTIFICATION_ID = 0
-private val REQUEST_CODE = 0
-private val FLAGS = 0
 
+@SuppressLint("WrongConstant")
 fun NotificationManager.sendNotification(messageBody: String, applicationContext: Context) {
     // Create the content intent for the notification, which launches
     // this activity
@@ -33,17 +32,6 @@ fun NotificationManager.sendNotification(messageBody: String, applicationContext
         applicationContext.resources,
         R.drawable.ic_launcher_foreground
     )
-    val bigPicStyle = NotificationCompat.BigPictureStyle()
-        .bigPicture(eggImage)
-        .bigLargeIcon(null)
-
-    // TODO: Step 2.2 add snooze action
-    val snoozeIntent = Intent(applicationContext, SnoozeReceiver::class.java)
-    val snoozePendingIntent: PendingIntent = PendingIntent.getBroadcast(
-        applicationContext,
-        REQUEST_CODE,
-        snoozeIntent,
-        FLAGS)
 
     // TODO: Step 1.2 get an instance of NotificationCompat.Builder
     // Build the notification
@@ -52,8 +40,6 @@ fun NotificationManager.sendNotification(messageBody: String, applicationContext
         applicationContext.getString(R.string.bump_notification_channel_id)
     )
 
-        // TODO: Step 1.8 use the new 'breakfast' notification channel
-
         // TODO: Step 1.3 set title, text and icon to builder
         .setSmallIcon(R.drawable.ic_launcher_foreground)
         .setContentTitle(applicationContext
@@ -65,16 +51,8 @@ fun NotificationManager.sendNotification(messageBody: String, applicationContext
         .setAutoCancel(true)
 
         // TODO: Step 2.1 add style to builder
-        .setStyle(bigPicStyle)
         .setLargeIcon(eggImage)
 
-        // TODO: Step 2.3 add snooze action
-        .addAction(
-            R.drawable.ic_launcher_foreground,
-            applicationContext.getString(R.string.snooze),
-            snoozePendingIntent
-        )
-
         // TODO: Step 2.5 set priority
         .setPriority(NotificationCompat.PRIORITY_HIGH)
     // TODO: Step 1.4 call notify

app/src/main/java/com/maenle/bump/util/RestSingleton.kt

@@ -1,11 +1,11 @@
-package com.example.bump.util
+package com.maenle.bump.util
 
 import android.content.Context
 import android.util.Log
 import com.android.volley.Request
 import com.android.volley.RequestQueue
 import com.android.volley.toolbox.*
-import com.example.bump.ui.MainActivity
+import com.maenle.bump.ui.MainActivity
 import org.json.JSONArray
 
 import org.json.JSONObject

app/src/main/res/layout/activity_main.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="com.example.bump.ui.MainActivity">
+    tools:context="com.maenle.bump.ui.MainActivity">
 
     <com.google.android.material.appbar.AppBarLayout
         android:layout_width="match_parent"

app/src/main/res/layout/fragment_camera.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="com.example.bump.ui.SecondFragment">
+    tools:context="com.maenle.bump.ui.SecondFragment">
 
     <!--androidx.camera.view.PreviewView
         android:id="@+id/viewFinder"

app/src/main/res/layout/fragment_first.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="com.example.bump.ui.FirstFragment">
+    tools:context="com.maenle.bump.ui.FirstFragment">
 
     <TextView
         android:id="@+id/textview_first"

app/src/main/res/layout/fragment_second.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="com.example.bump.ui.SecondFragment">
+    tools:context="com.maenle.bump.ui.SecondFragment">
 
     <androidx.camera.view.PreviewView
         android:id="@+id/viewFinder"

app/src/main/res/menu/menu_main.xml

@@ -1,7 +1,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    tools:context="com.maenle.bump.com.example.bump.ui.MainActivity">
+    tools:context="com.maenle.bump.ui.MainActivity">
     <item
         android:id="@+id/action_settings"
         android:orderInCategory="100"

app/src/main/res/navigation/nav_graph.xml

@@ -7,7 +7,7 @@
 
     <fragment
         android:id="@+id/FirstFragment"
-        android:name="com.example.bump.ui.FirstFragment"
+        android:name="com.maenle.bump.ui.FirstFragment"
         android:label="@string/first_fragment_label"
         tools:layout="@layout/fragment_first">
 
@@ -17,7 +17,7 @@
     </fragment>
     <fragment
         android:id="@+id/SecondFragment"
-        android:name="com.example.bump.ui.SecondFragment"
+        android:name="com.maenle.bump.ui.SecondFragment"
         android:label="@string/second_fragment_label"
         tools:layout="@layout/fragment_second">
 
@@ -27,7 +27,7 @@
     </fragment>
     <fragment
         android:id="@+id/CameraFragment"
-        android:name="com.example.bump.ui.CameraFragment"
+        android:name="com.maenle.bump.ui.CameraFragment"
         android:label="@string/camera_fragment_label"
         tools:layout="@layout/fragment_camera">
 

app/src/main/res/values/strings.xml

@@ -18,4 +18,7 @@
     <string name="bump_notification_channel_id">bump_id</string>
     <string name="snooze">Snooze</string>
     <string name="bump_notification_channel_name">Bump</string>
+    <string name="notification">This is a notification</string>
+    <string name="message_subscribed">Subscribed to Channel</string>
+    <string name="message_subscribe_failed">Could not subscribe</string>
 </resources>

build.gradle

@@ -7,6 +7,8 @@ buildscript {
     dependencies {
         classpath "com.android.tools.build:gradle:7.0.4"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.0"
+        classpath 'com.google.gms:google-services:4.3.2'  // Google Services plugin
+
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files