Added code for receiving gcm id/token and managing sessions based on logged in status

.idea/modules.xml

@@ -3,8 +3,6 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://$PROJECT_DIR$/IITB-App.iml" filepath="$PROJECT_DIR$/IITB-App.iml" />
-      <module fileurl="file://$PROJECT_DIR$/IITBApp.iml" filepath="$PROJECT_DIR$/IITBApp.iml" />
-      <module fileurl="file://D:\IITB-App\IITBApp.iml" filepath="D:\IITB-App\IITBApp.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
     </modules>
   </component>

app/build.gradle

@@ -28,6 +28,7 @@ ext {
     appAuthVersion = '0.2.0'
     retrofitVersion = '2.1.0'
     okhttpVersion = '3.4.1'
+
 }
 
 dependencies {
@@ -42,9 +43,11 @@ dependencies {
     compile "com.google.android.gms:play-services-maps:${playServicesVersion}"
     compile "com.android.support:support-v4:${supportLibVersion}"
     compile "com.jakewharton:butterknife:${butterKnifeVersion}"
+    compile "com.google.android.gms:play-services-gcm:11.0.2"
     annotationProcessor "com.jakewharton:butterknife-compiler:${butterKnifeVersion}"
     compile "com.squareup.retrofit2:retrofit:${retrofitVersion}"
     compile "com.squareup.retrofit2:converter-gson:${retrofitVersion}"
     compile "com.squareup.okhttp3:okhttp:${okhttpVersion}"
     compile "com.squareup.okhttp3:logging-interceptor:${okhttpVersion}"
 }
+apply plugin: 'com.google.gms.google-services'

app/google-services.json

+{
+  "project_info": {
+    "project_number": "306601329049",
+    "firebase_url": "https://iitb-app-5c0aa.firebaseio.com",
+    "project_id": "iitb-app-5c0aa",
+    "storage_bucket": "iitb-app-5c0aa.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:306601329049:android:950a72a311331b9c",
+        "android_client_info": {
+          "package_name": "in.ac.iitb.gymkhana.iitbapp"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "306601329049-6v597vrdv0nbi15ehpehq8hiaek8unqp.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyC1oThCMZN3JMnK6MUTJRjkp47q1K_gnTA"
+        }
+      ],
+      "services": {
+        "analytics_service": {
+          "status": 1
+        },
+        "appinvite_service": {
+          "status": 1,
+          "other_platform_oauth_client": []
+        },
+        "ads_service": {
+          "status": 2
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
\ No newline at end of file

app/src/main/AndroidManifest.xml

@@ -4,6 +4,8 @@
 
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -23,6 +25,7 @@
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"
+            android:launchMode="singleTask"
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -30,17 +33,19 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".LoginActivity">
+        <activity
+            android:name=".LoginActivity"
+            android:launchMode="singleTask">
 
             <intent-filter>
                 <action android:name="HANDLE_AUTHORIZATION_RESPONSE" />
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
+            <!-- <intent-filter>
+                 <action android:name="android.intent.action.MAIN" />
 
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
+                 &lt;!&ndash;<category android:name="android.intent.category.LAUNCHER" />&ndash;&gt;
+             </intent-filter>-->
 
         </activity>
         <activity android:name="net.openid.appauth.RedirectUriReceiverActivity">
@@ -56,6 +61,35 @@
             </intent-filter>
         </activity>
 
+        <receiver
+            android:name="com.google.android.gms.gcm.GcmReceiver"
+            android:exported="true"
+            android:permission="com.google.android.c2dm.permission.SEND">
+            <intent-filter>
+                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
+                <category android:name="com.example.gcm" />
+            </intent-filter>
+        </receiver>
+
+        <service
+            android:name="in.ac.iitb.gymkhana.iitbapp.gcm.MyGcmListenerService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
+            </intent-filter>
+        </service>
+        <service
+            android:name="in.ac.iitb.gymkhana.iitbapp.gcm.MyInstanceIDListenerService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.android.gms.iid.InstanceID" />
+            </intent-filter>
+        </service>
+        <service
+            android:name="in.ac.iitb.gymkhana.iitbapp.gcm.RegistrationIntentService"
+            android:exported="false"></service>
+
+
         <provider
             android:name="in.ac.iitb.gymkhana.iitbapp.data.IITBAppContentProvider"
             android:authorities="in.ac.iitb.gymkhana.iitbapp"

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/LoginActivity.java

@@ -3,19 +3,26 @@ package in.ac.iitb.gymkhana.iitbapp;
 
 import android.annotation.TargetApi;
 import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v4.content.LocalBroadcastManager;
 import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.View;
 import android.widget.Button;
 import android.widget.Toast;
 
-import com.google.gson.annotations.SerializedName;
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
 
 import net.openid.appauth.AuthorizationException;
 import net.openid.appauth.AuthorizationRequest;
@@ -27,25 +34,66 @@ import in.ac.iitb.gymkhana.iitbapp.api.RetrofitInterface;
 import in.ac.iitb.gymkhana.iitbapp.api.ServiceGenerator;
 import in.ac.iitb.gymkhana.iitbapp.api.model.LoginRequest;
 import in.ac.iitb.gymkhana.iitbapp.api.model.LoginResponse;
+import in.ac.iitb.gymkhana.iitbapp.gcm.RegistrationIntentService;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
-import retrofit2.Retrofit;
+
 
 public class LoginActivity extends AppCompatActivity {
+    public static final String SENT_TOKEN_TO_SERVER = "sentTokenToServer";
+    public static final String REGISTRATION_COMPLETE = "registrationComplete";
     private static final String TAG = "LoginActivity";
+    private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
     private final String clientId = "pFcDDWtUUfzlAX2ibriV25lm1J2m92O5ynfT4SYk";
     private final String clientSecret = "k56GXiN1qB4Dt7CnTVWjuwLJyWntNulitWOkL7Wddr6JHPiHqIZgSfgUplO6neTqumVr32zA14XgQmkuoC8y6y9jnaQT9tKDsq4jQklRb8MQNQglQ1H4YrmqOwPfaNyO";
     private final Uri redirectUri = Uri.parse("https://redirecturi");
     private final Uri mAuthEndpoint = Uri.parse("http://gymkhana.iitb.ac.in/sso/oauth/authorize/");
     private final Uri mTokenEndpoint = Uri.parse("http://gymkhana.iitb.ac.in/sso/oauth/token/");
+    public String authCode = null;
+    SessionManager session;
+    Context mContext = this;
     private AuthorizationService mAuthService;
+    private BroadcastReceiver mRegistrationBroadcastReceiver;
+    private boolean isReceiverRegistered;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        session = new SessionManager(mContext);
         setContentView(R.layout.activity_login);
         mAuthService = new AuthorizationService(this);
+        mRegistrationBroadcastReceiver = new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+
+                SharedPreferences sharedPreferences =
+                        PreferenceManager.getDefaultSharedPreferences(context);
+                boolean sentToken = sharedPreferences
+                        .getBoolean(SENT_TOKEN_TO_SERVER, false);
+                if (sentToken) {
+                    String token = intent.getStringExtra("Token");
+
+                    Log.d(TAG, "Going to login with :" + authCode + "\n" + token);
+                    //************
+                    //TODO Remove following 6 lines after the server is hosted
+                    String gcmRegId = token;
+                    session.createLoginSession(gcmRegId);
+                    Intent i = new Intent(mContext, MainActivity.class);
+                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+                    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    startActivity(i);
+
+
+                    //**************
+                    login(authCode, token);
+
+                } else {
+
+                }
+            }
+        };
+        registerReceiver();
 
         Button ldapLogin = (Button) findViewById(R.id.ldap_login);
         ldapLogin.setOnClickListener(new View.OnClickListener() {
@@ -81,15 +129,17 @@ public class LoginActivity extends AppCompatActivity {
         if (intent != null) {
             Log.d(TAG, "Intent Received");
             String action = intent.getAction();
-            switch (action) {
-                case "HANDLE_AUTHORIZATION_RESPONSE": {
-                    handleAuthorizationResponse(intent);
+            if (action != null) {
+                switch (action) {
+                    case "HANDLE_AUTHORIZATION_RESPONSE": {
+                        handleAuthorizationResponse(intent);
 
-                }
-                break;
-                default:
-                    Log.d(TAG, intent.getAction());
+                    }
+                    break;
+                    default:
+                        Log.d(TAG, intent.getAction());
 
+                }
             }
         }
     }
@@ -103,9 +153,17 @@ public class LoginActivity extends AppCompatActivity {
     @Override
     protected void onResume() {
         super.onResume();
+        registerReceiver();
         Log.d(TAG, "In Resume");
     }
 
+    @Override
+    protected void onPause() {
+        LocalBroadcastManager.getInstance(this).unregisterReceiver(mRegistrationBroadcastReceiver);
+        isReceiverRegistered = false;
+        super.onPause();
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();
@@ -117,13 +175,19 @@ public class LoginActivity extends AppCompatActivity {
         AuthorizationException error = AuthorizationException.fromIntent(intent);
 
         if (response != null) {
-            Log.d(TAG, "Received AuthorizationResponse: " + "AuthCode: " + response.authorizationCode);
+            authCode = response.authorizationCode;
+            Log.d(TAG, "Received AuthorizationResponse: " + "AuthCode: " + authCode);
             Toast.makeText(this,
-                    "AuthCode: " + response.authorizationCode, Toast.LENGTH_SHORT)
+                    "AuthCode: " + authCode, Toast.LENGTH_SHORT)
                     .show();
+            if (checkPlayServices()) {
+
+                Intent registerIntent = new Intent(this, RegistrationIntentService.class);
+                startService(registerIntent);
+            }
+
+//
 
-//            TODO: Replace gcmId
-            login(response.authorizationCode, "xyz");
         } else {
             Log.i(TAG, "Authorization failed: " + error.getMessage());
             Toast.makeText(this,
@@ -169,12 +233,20 @@ public class LoginActivity extends AppCompatActivity {
     }
 
     private void login(String authorizationCode, String gcmId) {
+        final String gcmRegId = gcmId;
         LoginRequest loginRequest = new LoginRequest(authorizationCode, gcmId);
         RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
         retrofitInterface.login(loginRequest).enqueue(new Callback<LoginResponse>() {
             @Override
             public void onResponse(Call<LoginResponse> call, Response<LoginResponse> response) {
                 if (response.isSuccessful()) {
+                    Log.d(TAG, "Login request successful");
+                    session.createLoginSession(gcmRegId);
+                    Intent i = new Intent(mContext, MainActivity.class);
+                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+                    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    startActivity(i);
+
                     //Save credentials in AccountManager to keep user logged in
                     //Go to MainActivity
                 }
@@ -187,5 +259,31 @@ public class LoginActivity extends AppCompatActivity {
             }
         });
     }
+
+    private void registerReceiver() {
+        if (!isReceiverRegistered) {
+            LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
+                    new IntentFilter(REGISTRATION_COMPLETE));
+            isReceiverRegistered = true;
+        }
+    }
+
+
+    private boolean checkPlayServices() {
+        GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
+        int resultCode = apiAvailability.isGooglePlayServicesAvailable(this);
+        if (resultCode != ConnectionResult.SUCCESS) {
+            if (apiAvailability.isUserResolvableError(resultCode)) {
+                apiAvailability.getErrorDialog(this, resultCode, PLAY_SERVICES_RESOLUTION_REQUEST)
+                        .show();
+            } else {
+                Log.i(TAG, "This device is not supported.");
+                finish();
+            }
+            return false;
+        }
+        return true;
+    }
+
 }
 

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/MainActivity.java

@@ -12,6 +12,7 @@ import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.widget.Toast;
 
 import in.ac.iitb.gymkhana.iitbapp.fragment.AboutFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.CMSFragment;
@@ -29,10 +30,17 @@ import in.ac.iitb.gymkhana.iitbapp.fragment.TimetableFragment;
 public class MainActivity extends AppCompatActivity
         implements NavigationView.OnNavigationItemSelectedListener {
 
+
+    private static final String TAG = "MainActivity";
+    SessionManager session;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        session = new SessionManager(getApplicationContext());
+        Toast.makeText(getApplicationContext(), "User Login Status: " + session.isLoggedIn(), Toast.LENGTH_LONG).show();
+        session.checkLogin();
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
@@ -45,6 +53,7 @@ public class MainActivity extends AppCompatActivity
         NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
         navigationView.setNavigationItemSelectedListener(this);
 
+
     }
 
     @Override
@@ -64,6 +73,7 @@ public class MainActivity extends AppCompatActivity
         return true;
     }
 
+
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         // Handle action bar item clicks here. The action bar will
@@ -143,4 +153,6 @@ public class MainActivity extends AppCompatActivity
         transaction.replace(R.id.framelayout_for_fragment, fragment, fragment.getTag());
         transaction.commit();
     }
+
+
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/SessionManager.java

+package in.ac.iitb.gymkhana.iitbapp;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.util.Log;
+
+public class SessionManager {
+    private static final String PREF_NAME = "LoggedInPref";
+    private static final String IS_LOGIN = "IsLoggedIn";
+    private static final String GCM_ID = "GcmId";
+    SharedPreferences pref;
+    Editor editor;
+    Context context;
+    int PRIVATE_MODE = 0;
+
+    public SessionManager(Context context) {
+        this.context = context;
+        pref = context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);
+        editor = pref.edit();
+    }
+
+    public void checkLogin() {
+
+        if (!this.isLoggedIn()) {
+
+            Intent i = new Intent(context, LoginActivity.class);
+            // Closing all the Activities
+            i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            // Add new Flag to start new Activity
+            i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            // Staring Login Activity
+            context.startActivity(i);
+
+
+        }
+
+    }
+
+    public void createLoginSession(String gcmId) {
+        Log.d("SessionManager", "GcmId being stored");
+        editor.putBoolean(IS_LOGIN, true);
+        editor.putString(GCM_ID, gcmId);
+        editor.commit();
+    }
+
+    public boolean isLoggedIn() {
+        return pref.getBoolean(IS_LOGIN, false);
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/gcm/MyGcmListenerService.java

+package in.ac.iitb.gymkhana.iitbapp.gcm;
+
+
+import com.google.android.gms.gcm.GcmListenerService;
+
+public class MyGcmListenerService extends GcmListenerService {
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/gcm/MyInstanceIDListenerService.java

+package in.ac.iitb.gymkhana.iitbapp.gcm;
+
+import android.content.Intent;
+
+import com.google.android.gms.iid.InstanceIDListenerService;
+
+
+public class MyInstanceIDListenerService extends InstanceIDListenerService {
+    @Override
+    public void onTokenRefresh() {
+        // Fetch updated Instance ID token and notify our app's server of any changes (if applicable).
+        Intent intent = new Intent(this, RegistrationIntentService.class);
+        startService(intent);
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/gcm/RegistrationIntentService.java

+package in.ac.iitb.gymkhana.iitbapp.gcm;
+
+
+import android.annotation.TargetApi;
+import android.app.IntentService;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Build;
+import android.preference.PreferenceManager;
+import android.support.annotation.Nullable;
+import android.support.annotation.RequiresApi;
+import android.support.v4.content.LocalBroadcastManager;
+import android.util.Log;
+import android.widget.Toast;
+
+import com.google.android.gms.gcm.GoogleCloudMessaging;
+import com.google.android.gms.iid.InstanceID;
+
+
+@TargetApi(Build.VERSION_CODES.CUPCAKE)
+public class RegistrationIntentService extends IntentService {
+
+
+    public static final String SENT_TOKEN_TO_SERVER = "sentTokenToServer";
+    public static final String REGISTRATION_COMPLETE = "registrationComplete";
+    private static final String TAG = "RegIntentService";
+
+
+    @RequiresApi(api = Build.VERSION_CODES.CUPCAKE)
+    public RegistrationIntentService() {
+        super(TAG);
+    }
+
+    @RequiresApi(api = Build.VERSION_CODES.GINGERBREAD)
+    @Override
+    protected void onHandleIntent(@Nullable Intent intent) {
+        String token = null;
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        try {
+            InstanceID instanceID = InstanceID.getInstance(this);
+            token = instanceID.getToken("306601329049",
+                    GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
+            Log.i(TAG, "GCM Registration Token: " + token);
+            Toast.makeText(this, "GCM Registration Token: " + token, Toast.LENGTH_SHORT).show();
+
+
+            sharedPreferences.edit().putBoolean(SENT_TOKEN_TO_SERVER, true).apply();
+
+        } catch (Exception e) {
+            Log.d(TAG, "Failed to complete token refresh", e);
+            sharedPreferences.edit().putBoolean(SENT_TOKEN_TO_SERVER, false).apply();
+        }
+
+        //Notify UI that registration is complete
+        Intent registrationComplete = new Intent(REGISTRATION_COMPLETE);
+        registrationComplete.putExtra("Token", token);
+        LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
+    }
+
+
+}

build.gradle

@@ -7,8 +7,9 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha6'
 
+        classpath 'com.android.tools.build:gradle:3.0.0-alpha6'
+	    classpath 'com.google.gms:google-services:3.1.0'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }