Introducing Notifications

PennMobile/build.gradle

@@ -99,6 +99,7 @@ dependencies {
     testImplementation platform(libs.androidx.compose.bom)
     androidTestImplementation platform(libs.androidx.compose.bom)
     implementation platform(libs.firebase.bom)
+    implementation(libs.firebase.messaging)
 
     implementation libs.bundles.compose
     implementation libs.bundles.material

PennMobile/src/main/AndroidManifest.xml

@@ -18,9 +18,11 @@
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
     <application
         android:name="androidx.multidex.MultiDexApplication"
+        android:label="Penn Mobile"
         android:allowBackup="true"
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
@@ -55,7 +57,12 @@
         </activity>
         <service android:name=".dining.widget.DiningHallWidgetAdapter"
             android:permission="android.permission.BIND_REMOTEVIEWS" />
-
+        <service android:name=".notifications.PushNotificationService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
         <meta-data
             android:name="com.google.android.gms.version"
             android:value="@integer/google_play_services_version" />
@@ -65,6 +72,16 @@
         <meta-data
             android:name="preloaded_fonts"
             android:resource="@array/preloaded_fonts" />
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_channel_id"
+            android:value="default_channel_id"/>
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@mipmap/ic_launcher_foreground" />
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_color"
+            android:resource="@color/penn_red" />
+
 
         <receiver
             android:name=".laundry.LaundryBroadcastReceiver"

PennMobile/src/main/java/com/pennapps/labs/pennmobile/MainActivity.kt

@@ -1,6 +1,7 @@
 package com.pennapps.labs.pennmobile
 
 import StudentLifeRf2
+import android.Manifest
 import android.content.Context
 import android.content.SharedPreferences
 import android.content.pm.PackageManager
@@ -20,8 +21,10 @@ import android.view.inputmethod.InputMethodManager
 import android.webkit.CookieManager
 import android.widget.TextView
 import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.content.ContextCompat
 import androidx.core.graphics.ColorUtils
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
@@ -35,6 +38,7 @@ import com.google.firebase.analytics.FirebaseAnalytics
 import com.google.gson.GsonBuilder
 import com.google.gson.reflect.TypeToken
 import com.pennapps.labs.pennmobile.api.CampusExpress
+import com.pennapps.labs.pennmobile.api.NotificationAPI
 import com.pennapps.labs.pennmobile.api.OAuth2NetworkManager
 import com.pennapps.labs.pennmobile.api.Platform
 import com.pennapps.labs.pennmobile.api.Serializer
@@ -77,6 +81,18 @@ class MainActivity : AppCompatActivity() {
     private lateinit var mFirebaseAnalytics: FirebaseAnalytics
     val mNetworkManager by lazy { OAuth2NetworkManager(this) }
 
+    // Declare the launcher at the top of your Activity/Fragment:
+    private val requestPermissionLauncher =
+        registerForActivityResult(
+            ActivityResultContracts.RequestPermission(),
+        ) { isGranted: Boolean ->
+            if (isGranted) {
+                // FCM SDK (and your app) can post notifications.
+            } else {
+                // TODO: Inform user that that your app will not show notifications.
+            }
+        }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         if (Build.VERSION.SDK_INT > 28) {
             setTheme(R.style.DarkModeApi29)
@@ -91,6 +107,7 @@ class MainActivity : AppCompatActivity() {
             setTheme(R.style.DarkBackground)
         }
         Utils.getCurrentSystemTime()
+        askNotificationPermission()
 
         setSupportActionBar(binding.include.toolbar)
         fragmentManager = supportFragmentManager
@@ -132,6 +149,25 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    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)
+            }
+        }
+    }
+
     private fun onExpandableBottomNavigationItemSelected() {
         binding.include.expandableBottomBar.setOnNavigationItemSelectedListener { item ->
             val position =
@@ -319,6 +355,7 @@ class MainActivity : AppCompatActivity() {
         private var mStudentLifeRf2: StudentLifeRf2? = null
         private var mPlatform: Platform? = null
         private var mCampusExpress: CampusExpress? = null
+        private var mNotificationAPI: NotificationAPI? = null
 
         @JvmStatic
         val campusExpressInstance: CampusExpress
@@ -383,6 +420,31 @@ class MainActivity : AppCompatActivity() {
                 return mStudentLifeRf2!!
             }
 
+        val notificationAPIInstance: NotificationAPI
+            get() {
+                if (mNotificationAPI == null) {
+                    val okHttpClient =
+                        OkHttpClient
+                            .Builder()
+                            .connectTimeout(35, TimeUnit.SECONDS)
+                            .readTimeout(35, TimeUnit.SECONDS)
+                            .writeTimeout(35, TimeUnit.SECONDS)
+                            .build()
+
+                    val retrofit =
+                        Retrofit
+                            .Builder()
+                            .baseUrl("https://pennmobile.org/api/")
+                            .client(okHttpClient)
+                            .addConverterFactory(ScalarsConverterFactory.create())
+                            .addConverterFactory(GsonConverterFactory.create())
+                            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
+                            .build()
+                    mNotificationAPI = retrofit.create(NotificationAPI::class.java)
+                }
+                return mNotificationAPI!!
+            }
+
         @JvmStatic
         val studentLifeInstance: StudentLife
             get() {

PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/NotificationAPI.kt

@@ -0,0 +1,21 @@
+package com.pennapps.labs.pennmobile.api
+
+import okhttp3.ResponseBody
+import retrofit2.Response
+import retrofit2.http.DELETE
+import retrofit2.http.Header
+import retrofit2.http.POST
+import retrofit2.http.Path
+
+interface NotificationAPI {
+    @POST("user/notifications/tokens/android/{token}/")
+    suspend fun sendNotificationToken(
+        @Header("Authorization") bearerToken: String,
+        @Path("token") token: String,
+    ): Response<ResponseBody>
+
+    @DELETE("user/notifications/tokens/android/{token}/")
+    suspend fun deleteNotificationToken(
+        @Path("token") token: String,
+    ): Response<ResponseBody>
+}

PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/fragments/LoginWebviewFragment.kt

@@ -17,6 +17,8 @@ import android.widget.Button
 import android.widget.LinearLayout
 import android.widget.Toast
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.preference.PreferenceManager
 import com.google.firebase.analytics.FirebaseAnalytics
 import com.google.firebase.crashlytics.FirebaseCrashlytics
@@ -29,6 +31,9 @@ import com.pennapps.labs.pennmobile.api.StudentLife
 import com.pennapps.labs.pennmobile.api.classes.AccessTokenResponse
 import com.pennapps.labs.pennmobile.api.classes.Account
 import com.pennapps.labs.pennmobile.api.classes.GetUserResponse
+import com.pennapps.labs.pennmobile.api.viewmodels.LoginWebviewViewmodel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import org.apache.commons.lang3.RandomStringUtils
 import retrofit.Callback
 import retrofit.RetrofitError
@@ -55,6 +60,7 @@ class LoginWebviewFragment : Fragment() {
     lateinit var platformAuthUrl: String
     lateinit var clientID: String
     lateinit var redirectUri: String
+    private val loginWebviewViewmodel: LoginWebviewViewmodel by viewModels()
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -206,6 +212,7 @@ class LoginWebviewFragment : Fragment() {
                         editor.putLong(getString(R.string.token_expires_at), currentTime + expiresInInt)
                         editor.apply()
                         getUser(accessToken)
+                        sendNotifToken()
                     }
                 }
 
@@ -260,6 +267,20 @@ class LoginWebviewFragment : Fragment() {
         }
     }
 
+    private fun sendNotifToken() {
+        val mNotificationAPI = MainActivity.notificationAPIInstance
+
+        val bearerToken = "Bearer " + sp.getString(getString(R.string.access_token), "").toString()
+        val notifToken = sp.getString(getString(R.string.notification_token), "").toString()
+
+        Log.d("Notification Token", notifToken)
+        val notGuest = !sp.getBoolean(mActivity.getString(R.string.guest_mode), false)
+
+        lifecycleScope.launch(Dispatchers.IO) {
+            loginWebviewViewmodel.sendToken(mNotificationAPI, notGuest, bearerToken, notifToken)
+        }
+    }
+
     private fun getCodeChallenge(codeVerifier: String): String {
         // Hash the code verifier
         val md = MessageDigest.getInstance("SHA-256")

PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/viewmodels/LoginWebviewViewmodel.kt

@@ -0,0 +1,29 @@
+package com.pennapps.labs.pennmobile.api.viewmodels
+
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import com.pennapps.labs.pennmobile.api.NotificationAPI
+
+// Currently only include logic for notifications, would add more network handling afterwards (TBD)
+
+class LoginWebviewViewmodel : ViewModel() {
+    suspend fun sendToken(
+        mNotificationAPI: NotificationAPI,
+        notGuest: Boolean,
+        bearerToken: String,
+        notifToken: String,
+    ) {
+        try {
+            if (notGuest) {
+                val response = mNotificationAPI.sendNotificationToken(bearerToken, notifToken)
+                if (response.isSuccessful) {
+                    Log.i("Notification Token", "Successfully updated token")
+                } else {
+                    Log.i("Notification Token", "Error updating token: ${response.code()} ${response.message()}")
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+    }
+}

PennMobile/src/main/java/com/pennapps/labs/pennmobile/more/fragments/MoreFragment.kt

@@ -47,6 +47,21 @@ class MoreFragment : Fragment() {
         savedInstanceState: Bundle?,
     ) {
         super.onViewCreated(view, savedInstanceState)
+        val initials =
+            PreferenceManager
+                .getDefaultSharedPreferences(mActivity)
+                .getString(getString(R.string.initials), null)
+        if (initials != null && initials.isNotEmpty()) {
+            binding.initials.text = initials
+        } else {
+            binding.profileBackground.setImageDrawable(
+                ResourcesCompat.getDrawable(
+                    resources,
+                    R.drawable.ic_guest_avatar,
+                    context?.theme,
+                ),
+            )
+        }
         childFragmentManager
             .beginTransaction()
             .replace(R.id.more_frame, PreferenceFragment())