feat: push notification service and related updates (JunTingLin#31)

* feat: push notification service

* update: notification layout

* update: app icon

* update: change push notification host platform

app/build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'com.google.gms.google-services'    // Firebase cloud messaging
 }
 
 android {
@@ -74,4 +75,13 @@ dependencies {
 
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2"
 
-}
+    //Firebase cloud messaging
+    implementation(platform("com.google.firebase:firebase-bom:32.2.2"))
+    implementation("com.google.firebase:firebase-analytics-ktx")
+    implementation 'com.google.firebase:firebase-messaging-ktx:23.2.1'
+
+}
+
+//Firebase cloud messaging
+apply plugin: 'com.android.application'
+apply plugin: 'com.google.gms.google-services'

app/google-services.json

@@ -0,0 +1,39 @@
+{
+  "project_info": {
+    "project_number": "492668968463",
+    "project_id": "fcm-push-notification-e4aec",
+    "storage_bucket": "fcm-push-notification-e4aec.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:492668968463:android:0678bdeeba840fcb938d7a",
+        "android_client_info": {
+          "package_name": "com.junting.drug_android_frontend"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "492668968463-vp40cg6ueq2vu2l58cjqn3uckn07dvnn.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDifL__af4zqstAbbX2j4u2RCZ-kVra6IQ"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "492668968463-vp40cg6ueq2vu2l58cjqn3uckn07dvnn.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/src/main/AndroidManifest.xml

@@ -6,6 +6,8 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.CALL_PHONE" />
 
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+
     <!--    permission of bluetooth connection-->
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
@@ -34,6 +36,14 @@
         android:usesCleartextTraffic="true"
         tools:targetApi="31">
 
+        <!--   Firebase cloud messaging     -->
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@drawable/app_image" />
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_color"
+            android:resource="@color/black" />
+
         <activity
             android:name=".IntroductoryActivity"
             android:exported="false" />
@@ -88,6 +98,15 @@
             android:exported="false"
             android:label="@string/photo_confirmation_page" />
 
+        <!--Firebase cloud messaging-->
+        <service
+            android:name=".MyFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
+            </intent-filter>
+        </service>
+
     </application>
 
 </manifest>

app/src/main/java/com/junting/drug_android_frontend/MainActivity.kt

@@ -1,14 +1,21 @@
 package com.junting.drug_android_frontend
 
+import android.Manifest
 import android.content.BroadcastReceiver
 import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.view.MenuItem
 import android.widget.ImageView
 import android.widget.SeekBar
 import android.widget.TextView
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import androidx.core.view.GravityCompat
 import androidx.navigation.NavController
 import androidx.navigation.NavDestination
@@ -19,6 +26,7 @@ import androidx.navigation.ui.setupWithNavController
 import com.google.android.material.bottomnavigation.BottomNavigationView
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.navigation.NavigationView
+import com.google.firebase.messaging.FirebaseMessaging
 import com.junting.drug_android_frontend.databinding.ActivityMainBinding
 import com.junting.drug_android_frontend.databinding.FontSizeDialogLayoutBinding
 import com.junting.drug_android_frontend.libs.FontSizeManager
@@ -27,6 +35,12 @@ import com.junting.drug_android_frontend.libs.SharedPreferencesManager
 import com.junting.drug_android_frontend.ui.libs.updater.UpdateUIHelper
 import com.squareup.picasso.Picasso
 import java.util.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import java.net.HttpURLConnection
+import java.net.URL
+import java.util.Locale
 
 
 class MainActivity : AppCompatActivity() {
@@ -170,6 +184,20 @@ class MainActivity : AppCompatActivity() {
             navController.navigate(R.id.navigation_pillBoxManagement)
         }
         setupUpdateUIListener()
+
+        // sending FCM token
+        FirebaseMessaging.getInstance().token.addOnCompleteListener { task ->
+            if (task.isSuccessful) {
+                val token = task.result
+                Log.d("FCM Token", "Token: $token")
+                sendTokenToServer(token)
+            } else {
+                Log.e("FCM Token", "Error getting token: ${task.exception}")
+            }
+        }
+
+        //check push notification permission
+        askNotificationPermission()
     }
 
     // out of onCreate
@@ -301,4 +329,48 @@ class MainActivity : AppCompatActivity() {
         super.onDestroy()
         UpdateUIHelper.unListen(baseContext, setTodayReminderBadgeReceiver)
     }
+
+    fun sendTokenToServer(token: String) {
+        GlobalScope.launch(Dispatchers.IO) {
+            val url = URL("https://bosh.pythonanywhere.com/addToken/${token}")
+
+            try {
+                val connection = url.openConnection() as HttpURLConnection
+                connection.requestMethod = "GET"
+
+                val responseCode = connection.responseCode
+                Log.d("FCM token", "Response Code: $responseCode")
+            } catch (e: Exception) {
+                e.printStackTrace()
+            }
+        }
+    }
+
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission(),
+    ) { isGranted: Boolean ->
+        if (isGranted) {
+            // FCM SDK (and your app) can post notifications.
+        } else {
+            Toast.makeText(this, "你不能收到吃藥通知", Toast.LENGTH_SHORT).show()
+        }
+    }
+    private fun askNotificationPermission() {
+        // This is only necessary for API level >= 33 (TIRAMISU)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) ==
+                PackageManager.PERMISSION_GRANTED
+            ) {
+                // FCM SDK (and your app) can post notifications.
+            } else if (shouldShowRequestPermissionRationale(Manifest.permission.POST_NOTIFICATIONS)) {
+                // TODO: display an educational UI explaining to the user the features that will be enabled
+                //       by them granting the POST_NOTIFICATION permission. This UI should provide the user
+                //       "OK" and "No thanks" buttons. If the user selects "OK," directly request the permission.
+                //       If the user selects "No thanks," allow the user to continue without notifications.
+            } else {
+                // Directly ask for the permission
+                requestPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+            }
+        }
+    }
 }

app/src/main/java/com/junting/drug_android_frontend/MyFirebaseMessagingService.kt

@@ -0,0 +1,71 @@
+package com.junting.drug_android_frontend
+
+import android.annotation.SuppressLint
+import com.google.firebase.messaging.FirebaseMessagingService
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.util.Log
+import android.widget.RemoteViews
+import androidx.core.app.NotificationCompat
+import com.google.firebase.messaging.RemoteMessage
+
+const val channelId = "notification_channel"
+const val channelName = "com.junting.drug_android_frontend"
+class MyFirebaseMessagingService : FirebaseMessagingService(){
+
+    override fun onNewToken(token: String) {
+        Log.d("New token", "$token")
+    }
+    override fun onMessageReceived(remoteMessage: RemoteMessage) {
+
+//        if (remoteMessage.data.isNotEmpty()) {
+        Log.d("Message", remoteMessage.notification!!.title!!)
+        generateNotification(remoteMessage.notification!!.title!!, remoteMessage.notification!!.body!!)
+//        }
+    }
+
+//    @SuppressLint("RemoteViewLayout")
+//    fun getRemoteView(notificationTitle: String, notificationDescription: String) : RemoteViews{
+//
+//        val remoteViews = RemoteViews("com.junting.drug_android_frontend", R.layout.notification)
+//
+//        remoteViews.setTextViewText(R.id.notification_title, notificationTitle)
+//        remoteViews.setTextViewText(R.id.notification_description, notificationDescription)
+//        remoteViews.setImageViewResource(R.id.notification_logo, R.drawable.app_image)
+//
+//        return remoteViews
+//    }
+    fun generateNotification(notificationTitle: String, notificationDescription: String){
+
+        val intent = Intent(this, MainActivity::class.java)
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
+
+        val pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT or PendingIntent.FLAG_IMMUTABLE)
+
+        var builder: NotificationCompat.Builder = NotificationCompat.Builder(applicationContext, channelId)
+            .setSmallIcon(R.drawable.app_image)
+            .setContentTitle(notificationTitle)
+            .setContentText(notificationDescription)
+            .setAutoCancel(true)
+            .setVibrate(longArrayOf(1000, 1000, 1000, 1000))
+            .setOnlyAlertOnce(true)
+            .setContentIntent(pendingIntent)
+
+
+//        builder = builder.setContent(getRemoteView(notificationTitle, notificationDescription))
+
+        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
+            val notificationChannel = NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_HIGH)
+            notificationManager.createNotificationChannel(notificationChannel)
+        }
+
+        notificationManager.notify(0, builder.build())
+    }
+}

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

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="10dp"
+        tools:ignore="UselessParent">
+
+        <ImageView
+            android:id="@+id/notification_logo"
+            android:layout_width="70dp"
+            android:layout_height="70dp"
+            android:layout_marginLeft="10dp"
+            android:layout_marginTop="10dp"
+            android:src="@drawable/app_image"/>
+
+        <TextView
+            android:id="@+id/notification_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Title"
+            android:textSize="20sp"
+            android:textStyle="bold"
+            android:layout_toRightOf="@id/notification_logo"
+            android:layout_marginLeft="10dp"
+            android:layout_marginTop="15dp"/>
+
+        <TextView
+            android:id="@+id/notification_description"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="This is description"
+            android:textSize="20sp"
+            android:textStyle="normal"
+            android:layout_toRightOf="@id/notification_logo"
+            android:layout_below="@+id/notification_title"
+            android:layout_marginLeft="10dp" />
+
+    </RelativeLayout>
+
+
+</RelativeLayout>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#A7D7B8</color>
+</resources>

build.gradle

@@ -1,6 +1,12 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    dependencies {
+        classpath 'com.google.gms:google-services:4.3.15'
+    }
+}
 plugins {
     id 'com.android.application' version '7.4.1' apply false
     id 'com.android.library' version '7.4.1' apply false
     id 'org.jetbrains.kotlin.android' version '1.7.21' apply false
+    id 'com.google.gms.google-services' version '4.3.15' apply false  // Firebase cloud messaging
 }