Integration Firebase Functions

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/.gitignore

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+/build

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "com.example.mlapitest"
+        minSdkVersion 26
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        multiDexEnabled true
+    }
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    packagingOptions {
+        exclude 'META-INF/DEPENDENCIES'
+        exclude 'META-INF/LICENSE'
+        exclude 'META-INF/LICENSE.txt'
+        exclude 'META-INF/license.txt'
+        exclude 'META-INF/NOTICE'
+        exclude 'META-INF/NOTICE.txt'
+        exclude 'META-INF/notice.txt'
+        exclude 'META-INF/ASL2.0'
+        exclude 'META-INF/INDEX.LIST'
+        exclude 'META-INF/io.netty.versions.properties'
+    }
+}
+
+dependencies {
+
+    configurations.all {
+        resolutionStrategy.force 'com.android.support:support-annotations:25.3.0'
+    }
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.1.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+
+    implementation 'com.google.firebase:firebase-core:17.0.0'
+    implementation 'com.google.firebase:firebase-auth:18.0.0'
+    implementation 'com.firebaseui:firebase-ui-auth:4.1.0'
+    implementation 'com.google.firebase:firebase-messaging:19.0.1'
+    implementation 'com.google.firebase:firebase-functions:18.0.0'
+    implementation 'com.android.volley:volley:1.1.1'
+    implementation 'com.google.cloud:google-cloud-dialogflow:0.96.0-alpha'
+    implementation group: 'io.grpc', name: 'grpc-okhttp', version: '1.21.0'
+    implementation group: 'io.grpc', name: 'grpc-netty', version: '1.21.0'
+
+    implementation "com.google.firebase:firebase-database:18.0.0"
+}
+
+
+apply plugin: 'com.google.gms.google-services'

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/androidTest/java/com/example/mlapitest/ExampleInstrumentedTest.java

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+package com.example.mlapitest;
+
+import android.content.Context;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.example.mlapitest", appContext.getPackageName());
+    }
+}

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.example.mlapitest">
+
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:name=".AppController"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".ui.ChatActivity" />
+        <activity android:name=".ui.WelcomeActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".ui.MainActivity" />
+        <service
+            android:name=".service.MyFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
+    </application>
+
+</manifest>

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/java/com/example/mlapitest/AppController.java

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+package com.example.mlapitest;
+
+import android.app.Application;
+
+import com.google.firebase.functions.FirebaseFunctions;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+public class AppController extends Application {
+
+    public static final String TOKEN_RECEIVED = "TOKEN_RECEIVED";
+    public static final String PROJECT_ID = "PROJECT_ID";
+    public static final String SESSION_ID = "sessionId";
+    public static String firebaseInstanceId = "";
+
+    public static String token = "";
+    public static Date exipryTime;
+
+    /**
+     * function to call the firebase function which will send the fcm message containing token and expiry time to the device
+     */
+    public static void callFirebaseFunction() {
+        Map<String, Object> data = new HashMap<>();
+        data.put("deviceId", AppController.firebaseInstanceId);
+        FirebaseFunctions firebaseFunctions;
+        firebaseFunctions = FirebaseFunctions.getInstance();
+
+        firebaseFunctions
+                .getHttpsCallable("getOAuthToken")
+                .call(data);
+    }
+
+    /**
+     * function to convert string to date
+     * @param dt    :   string date
+     * @return      :   converted date object
+     */
+    public static Date getDateFromStrinng(String dt) {
+        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
+        try {
+            Date date = format.parse(dt);
+            return date;
+        } catch (ParseException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+}

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/java/com/example/mlapitest/adapter/ChatRecyclerViewAdapter.java

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+package com.example.mlapitest.adapter;
+
+import android.content.Context;
+import androidx.recyclerview.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import com.example.mlapitest.R;
+import com.example.mlapitest.model.ChatMsgModel;
+
+import java.util.ArrayList;
+
+public class ChatRecyclerViewAdapter extends RecyclerView.Adapter<ChatRecyclerViewAdapter.MyViewHolder> {
+
+    private ArrayList<ChatMsgModel> chatMsgModels;
+    private Context context;
+
+    public ChatRecyclerViewAdapter(Context context, ArrayList<ChatMsgModel> chatMsgModels) {
+        this.context = context;
+        this.chatMsgModels = chatMsgModels;
+
+    }
+
+    @Override
+    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        View itemView = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.custom_chat_recyclerview_item, parent, false);
+
+        return new MyViewHolder(itemView);
+    }
+
+    @Override
+    public void onBindViewHolder(MyViewHolder holder, final int position) {
+        final ChatMsgModel chatMsgModel = chatMsgModels.get(position);
+
+        if(chatMsgModel.getType()==1) { // Message Sent
+            holder.tvMsgSent.setText(chatMsgModel.getMsg());
+            holder.tvMsgSent.setVisibility(View.VISIBLE);
+            holder.tvMsgReceived.setVisibility(View.GONE);
+        } else {
+            holder.tvMsgReceived.setText(chatMsgModel.getMsg());
+            holder.tvMsgReceived.setVisibility(View.VISIBLE);
+            holder.tvMsgSent.setVisibility(View.GONE);
+        }
+
+
+    }
+
+    @Override
+    public int getItemCount() {
+        return chatMsgModels.size();
+    }
+
+    public class MyViewHolder extends RecyclerView.ViewHolder {
+        RelativeLayout rlMain;
+        TextView tvMsgSent;
+        TextView tvMsgReceived;
+
+        public MyViewHolder(View view) {
+            super(view);
+            rlMain = view.findViewById(R.id.rlMain);
+            tvMsgSent = view.findViewById(R.id.tvMsgSent);
+            tvMsgReceived = view.findViewById(R.id.tvMsgReceived);
+        }
+    }
+}

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/java/com/example/mlapitest/model/ChatMsgModel.java

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+package com.example.mlapitest.model;
+
+public class ChatMsgModel {
+
+    private String msg;
+    private int type;
+
+    public ChatMsgModel(String msg, int type) {
+        this.msg = msg;
+        this.type = type;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+
+    public int getType() {
+        return type;
+    }
+
+    public void setType(int type) {
+        this.type = type;
+    }
+}

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/java/com/example/mlapitest/service/MyFirebaseInstanceIDService.java

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+package com.example.mlapitest.service;
+
+import com.example.mlapitest.AppController;
+import com.google.firebase.messaging.FirebaseMessagingService;
+
+public class MyFirebaseInstanceIDService extends FirebaseMessagingService {
+    private static final String TAG = MyFirebaseInstanceIDService.class.getSimpleName();
+
+    @Override
+    public void onNewToken(String s) {
+        super.onNewToken(s);
+        String refreshedToken = s;
+
+        AppController.firebaseInstanceId = refreshedToken;
+
+    }
+
+}

samples-refs_heads_mobile-auth-mobile-mobile_proxy_server-android_app/app/src/main/java/com/example/mlapitest/service/MyFirebaseMessagingService.java

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+package com.example.mlapitest.service;
+
+import android.content.Intent;
+import android.util.Log;
+
+import com.example.mlapitest.AppController;
+import com.google.firebase.messaging.FirebaseMessagingService;
+import com.google.firebase.messaging.RemoteMessage;
+
+import org.json.JSONObject;
+
+public class MyFirebaseMessagingService extends FirebaseMessagingService {
+
+    private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();
+
+    @Override
+    public void onMessageReceived(RemoteMessage remoteMessage) {
+        Log.e("FirebaseMessage", "From: " + remoteMessage.getFrom());
+
+        if (remoteMessage == null)
+            return;
+
+        // Check if message contains a notification payload.
+        if (remoteMessage.getNotification() != null) {
+            Log.e(TAG, "Notification Body: " + remoteMessage.getNotification().getBody());
+            handleNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());
+        }
+    }
+
+    /**
+     * function to save the token data in the AppController
+     * @param title     :   expiry time received from FCM
+     * @param message   :   token received from FCM
+     */
+    private void handleNotification(String title, String message) {
+        AppController.exipryTime = AppController.getDateFromStrinng(title);
+        AppController.token = message;
+
+        Intent intent = new Intent(AppController.TOKEN_RECEIVED);
+        sendBroadcast(intent);
+    }
+
+    private void handleDataMessage(JSONObject json) {
+        Log.e(TAG, "push json: " + json.toString());
+    }
+}