WIP push notifications likes

app/src/main/java/com/isolaatti/MyApplication.kt

@@ -1,21 +1,24 @@
 package com.isolaatti
 
 import android.app.Application
+import android.app.NotificationChannel
+import android.app.NotificationManager
 import android.content.Context
 import android.net.ConnectivityManager
+import android.os.Build
 import android.util.Log
+import androidx.annotation.RequiresApi
 import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.preferencesDataStore
-import com.google.firebase.Firebase
 import com.google.firebase.messaging.FirebaseMessaging
 import com.isolaatti.connectivity.ConnectivityCallbackImpl
-import com.isolaatti.push_notifications.FcmService
 import com.isolaatti.push_notifications.PushNotificationsApi
 import dagger.hilt.android.HiltAndroidApp
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import okhttp3.RequestBody.Companion.toRequestBody
 import retrofit2.awaitResponse
 import javax.inject.Inject
 
@@ -27,6 +30,8 @@ class MyApplication : Application() {
     companion object {
         lateinit var myApp: MyApplication
         const val LOG_TAG = "MyApplication"
+
+        const val LIKES_NOTIFICATION_CHANNEL_ID = "like notification"
     }
 
     @Inject
@@ -42,18 +47,27 @@ class MyApplication : Application() {
         connectivityCallbackImpl = ConnectivityCallbackImpl()
         getSystemService(ConnectivityManager::class.java).registerDefaultNetworkCallback(connectivityCallbackImpl)
 
-        FirebaseMessaging.getInstance().token.addOnCompleteListener {
-            if(!it.isSuccessful) {
-                Log.w(LOG_TAG, "Failed fetching fcm token")
-                return@addOnCompleteListener
-            }
-
+        FirebaseMessaging.getInstance().token.addOnSuccessListener {
             CoroutineScope(Dispatchers.IO).launch {
-                val response = pushNotificationsApi.registerDevice(it.result).awaitResponse()
-                Log.d(FcmService.LOG_TAG, "Device registered. FCM token: $it.result")
-                Log.d(FcmService.LOG_TAG, "Response: isSuccessful: ${response.isSuccessful}")
+                val response = pushNotificationsApi.registerDevice(it.toRequestBody()).awaitResponse()
             }
         }
+
+        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+            createLikesNotificationChannel(notificationManager)
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun createLikesNotificationChannel(notificationManager: NotificationManager) {
+        val name = getString(R.string.likes_notification_channel)
+        val description = getString(R.string.likes_notification_channel_description)
+        val importance = NotificationManager.IMPORTANCE_DEFAULT
+        val channel = NotificationChannel(LIKES_NOTIFICATION_CHANNEL_ID, name, importance).also {
+            it.description = description
+        }
+        notificationManager.createNotificationChannel(channel)
     }
 
     override fun onTerminate() {

app/src/main/java/com/isolaatti/common/CoilImageLoader.kt

@@ -19,4 +19,17 @@ object CoilImageLoader {
                 add(SvgDecoder.Factory())
             }.build()
     }
+
+    fun getImageLoader(context: Context): ImageLoader {
+        return ImageLoader
+            .Builder(context)
+            .memoryCache {
+                MemoryCache.Builder(context)
+                    .maxSizePercent(0.25)
+                    .build()
+            }
+            .components {
+                add(SvgDecoder.Factory())
+            }.build()
+    }
 }

app/src/main/java/com/isolaatti/push_notifications/FcmService.kt

@@ -1,22 +1,52 @@
 package com.isolaatti.push_notifications
 
 import android.Manifest
+import android.content.pm.PackageManager
 import android.util.Log
-import androidx.core.content.ContextCompat
+import androidx.core.app.ActivityCompat
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.graphics.drawable.toBitmap
+import coil.Coil
+import coil.request.ImageRequest
 import com.google.firebase.messaging.FirebaseMessagingService
 import com.google.firebase.messaging.RemoteMessage
-import dagger.hilt.EntryPoint
+import com.isolaatti.MyApplication
+import com.isolaatti.R
+import com.isolaatti.common.CoilImageLoader
+import com.isolaatti.notifications.domain.LikeNotification
+import com.isolaatti.utils.UrlGen
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.ResponseBody.Companion.toResponseBody
 import retrofit2.awaitResponse
+import retrofit2.http.Url
 import javax.inject.Inject
 
 @AndroidEntryPoint
 class FcmService : FirebaseMessagingService() {
     companion object {
         const val LOG_TAG = "FcmService"
+
+        object NotificationsConstants {
+
+            const val NOTIFICATION_ID       = "id"
+            const val TIMESTAMP             = "timeStamp"
+            const val USER_ID               = "userId"
+            const val READ                  = "read"
+            const val RELATED_NOTIFICATIONS = "relatedNotifications"
+
+            object LikeNotificationConstants {
+                const val LIKE_ID     = "likeId"
+                const val POST_ID     = "postId"
+                const val AUTHOR_ID   = "authorId"
+                const val AUTHOR_NAME = "authorName"
+            }
+        }
+
     }
 
     @Inject
@@ -25,19 +55,70 @@ class FcmService : FirebaseMessagingService() {
     override fun onNewToken(token: String) {
 
         CoroutineScope(Dispatchers.IO).launch {
-            val response = pushNotificationsApi.registerDevice(token).awaitResponse()
-            Log.d(LOG_TAG, "Device registered. FCM token: $token")
-            Log.d(LOG_TAG, "Response: isSuccessful: ${response.isSuccessful}")
+            val response = pushNotificationsApi.registerDevice(token.toRequestBody()).awaitResponse()
         }
 
     }
 
     override fun onMessageReceived(message: RemoteMessage) {
         super.onMessageReceived(message)
+        Log.d(LOG_TAG, "onMessageReceived")
+        val type = message.data["type"]
 
-        Log.d(LOG_TAG, "Message received")
-        message.data.forEach { t, u ->
-            Log.d(LOG_TAG, "$t $u")
+        when(type) {
+            LikeNotification.TYPE -> showLikeNotification(message.data)
+
+            else -> {
+                Log.i(LOG_TAG, "Not showing notification of unknown type: ${message.data}")
+            }
         }
     }
+
+    private fun showLikeNotification(data: Map<String, String>) {
+        val notificationId = data[NotificationsConstants.NOTIFICATION_ID]?.toIntOrNull()
+        val relatedNotifications = data[NotificationsConstants.RELATED_NOTIFICATIONS]?.trimStart('[')?.trimEnd(']')?.split(",")
+        val likeId = data[NotificationsConstants.LikeNotificationConstants.LIKE_ID]
+        val postId = data[NotificationsConstants.LikeNotificationConstants.POST_ID]
+        val authorId = data[NotificationsConstants.LikeNotificationConstants.AUTHOR_ID]?.toIntOrNull()
+        val authorName = data[NotificationsConstants.LikeNotificationConstants.AUTHOR_NAME]
+
+
+        val imageUrl = authorId?.let { UrlGen.userProfileImage(it, true) }
+
+        Log.d(LOG_TAG, data.toString())
+
+        val imageRequest = ImageRequest
+            .Builder(this)
+            .data(imageUrl)
+            .fallback(R.drawable.baseline_person_24)
+            .target { drawable ->
+                val notificationBuilder = NotificationCompat.Builder(this, MyApplication.LIKES_NOTIFICATION_CHANNEL_ID)
+                    .setSmallIcon(R.drawable.ic_notification)
+                    .setContentTitle(getString(R.string.like_notification_title, authorName ?: ""))
+                    .setContentText(getString(R.string.like_notification_text))
+                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+                    .setLargeIcon(drawable.toBitmap())
+
+                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
+                    return@target
+                }
+
+                Log.v(LOG_TAG, "Notification id: $notificationId")
+                // notificationId should never be null
+                if(notificationId == null) {
+                    return@target
+                }
+                NotificationManagerCompat.from(this).run {
+                    relatedNotifications?.forEach {
+                        it.toIntOrNull()?.let { relatedNotificationId -> cancel(relatedNotificationId) }
+                    }
+
+
+                    notify(notificationId, notificationBuilder.build())
+                }
+            }.build()
+
+
+        CoilImageLoader.getImageLoader(this).enqueue(imageRequest)
+    }
 }

app/src/main/java/com/isolaatti/push_notifications/PushNotificationsApi.kt

@@ -1,5 +1,7 @@
 package com.isolaatti.push_notifications
 
+import okhttp3.MultipartBody
+import okhttp3.RequestBody
 import retrofit2.Call
 import retrofit2.http.Multipart
 import retrofit2.http.PUT
@@ -9,6 +11,6 @@ interface PushNotificationsApi {
 
     @PUT("/api/push_notifications/register_device")
     @Multipart
-    fun registerDevice(@Part("token") token: String): Call<Unit>
+    fun registerDevice(@Part("token") token: RequestBody): Call<Unit>
 
 }

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

@@ -189,4 +189,8 @@
     <string name="push_notifications_dialog_title">Push notifications</string>
     <string name="push_notifications_dialog_message">Receive notifications to stay informed about your profile activity</string>
     <string name="push_notifications_dialog_rejected_message">You won\'t receive notifications. You can change this on your device settings.</string>
+    <string name="likes_notification_channel">Likes notifications</string>
+    <string name="likes_notification_channel_description">Get notified when someone likes your posts.</string>
+    <string name="like_notification_title">%s claps to your post</string>
+    <string name="like_notification_text">Tap this notification to go to the post.</string>
 </resources>