[AN/USER] feat: fcm 푸시 알림 구현 (#522)

android/festago/app/src/main/AndroidManifest.xml

@@ -64,7 +64,7 @@
             android:exported="false" />
 
         <service
-            android:name=".presentation.service.TicketEntryService"
+            android:name=".presentation.fcm.TicketEntryService"
             android:exported="false">
             <intent-filter>
                 <action android:name="com.google.firebase.MESSAGING_EVENT" />

android/festago/app/src/main/java/com/festago/festago/FestagoApplication.kt

@@ -1,6 +1,10 @@
 package com.festago.festago
 
 import android.app.Application
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import com.festago.festago.presentation.fcm.FcmMessageType
 import com.kakao.sdk.common.KakaoSdk
 import dagger.hilt.android.HiltAndroidApp
 
@@ -10,9 +14,21 @@ class FestagoApplication : Application() {
     override fun onCreate() {
         super.onCreate()
         initKakaoSdk()
+        initNotificationChannel()
     }
 
     private fun initKakaoSdk() {
         KakaoSdk.init(this, BuildConfig.KAKAO_NATIVE_APP_KEY)
     }
+
+    private fun initNotificationChannel() {
+        val channel = NotificationChannel(
+            FcmMessageType.ENTRY_ALERT.channelId,
+            getString(R.string.entry_alert_channel_name),
+            NotificationManager.IMPORTANCE_DEFAULT
+        )
+        val notificationManager =
+            getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        notificationManager.createNotificationChannel(channel)
+    }
 }

android/festago/app/src/main/java/com/festago/festago/presentation/fcm/FcmMessageType.kt

@@ -0,0 +1,7 @@
+package com.festago.festago.presentation.fcm
+
+enum class FcmMessageType(val id: Int, val channelId: String) {
+    ENTRY_ALERT(id = 0, channelId = "ENTRY_ALERT"),
+    ENTRY_PROCESS(id = 1, channelId = "ENTRY_PROCESS"),
+    ;
+}

android/festago/app/src/main/java/com/festago/festago/presentation/fcm/NotificationManager.kt

@@ -0,0 +1,51 @@
+package com.festago.festago.presentation.fcm
+
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import androidx.core.app.ActivityCompat
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import com.festago.festago.R
+import com.festago.festago.presentation.fcm.FcmMessageType.ENTRY_ALERT
+import com.festago.festago.presentation.ui.home.HomeActivity
+
+class NotificationManager(private val context: Context) {
+
+    private val intent = HomeActivity.getIntent(context).apply {
+        flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TASK
+    }
+
+    private val pendingIntent = PendingIntent.getActivity(
+        context,
+        HOME_REQUEST_CODE,
+        intent,
+        PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+    )
+
+    private val entryAlertNotificationBuilder =
+        NotificationCompat.Builder(context, ENTRY_ALERT.channelId)
+            .setSmallIcon(R.mipmap.ic_festago_logo_round)
+            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+            .setAutoCancel(true)
+            .setContentIntent(pendingIntent)
+
+    fun sendEntryAlertNotification(title: String, body: String) {
+        entryAlertNotificationBuilder
+            .setContentTitle(title)
+            .setContentText(body)
+
+        if (ActivityCompat.checkSelfPermission(
+                context,
+                android.Manifest.permission.POST_NOTIFICATIONS
+            ) == PackageManager.PERMISSION_GRANTED
+        ) {
+            NotificationManagerCompat.from(context).notify(0, entryAlertNotificationBuilder.build())
+        }
+    }
+
+    companion object {
+        private const val HOME_REQUEST_CODE = 0
+    }
+}

android/festago/app/src/main/java/com/festago/festago/presentation/fcm/TicketEntryService.kt

@@ -0,0 +1,42 @@
+package com.festago.festago.presentation.fcm
+
+import com.festago.festago.presentation.fcm.FcmMessageType.ENTRY_ALERT
+import com.festago.festago.presentation.fcm.FcmMessageType.ENTRY_PROCESS
+import com.google.firebase.messaging.FirebaseMessagingService
+import com.google.firebase.messaging.RemoteMessage
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.runBlocking
+
+class TicketEntryService : FirebaseMessagingService() {
+
+    private val notificationManager by lazy { NotificationManager(this) }
+
+    override fun onMessageReceived(remoteMessage: RemoteMessage) {
+        when (remoteMessage.notification?.channelId) {
+            ENTRY_ALERT.channelId -> handleEntryAlert(remoteMessage)
+
+            ENTRY_PROCESS.channelId -> {
+                runBlocking {
+                    ticketStateChangeEvent.emit(Unit)
+                }
+            }
+
+            else -> Unit
+        }
+    }
+
+    private fun handleEntryAlert(remoteMessage: RemoteMessage) {
+        notificationManager.sendEntryAlertNotification(
+            remoteMessage.notification?.title ?: "",
+            remoteMessage.notification?.body ?: ""
+        )
+    }
+
+    override fun onNewToken(token: String) {
+        // TODO: 토큰이 변경되었을 때 처리
+    }
+
+    companion object {
+        val ticketStateChangeEvent: MutableSharedFlow<Unit> = MutableSharedFlow()
+    }
+}

android/festago/app/src/main/java/com/festago/festago/presentation/ui/home/HomeActivity.kt

@@ -3,6 +3,8 @@ package com.festago.festago.presentation.ui.home
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
@@ -13,6 +15,7 @@ import com.festago.festago.presentation.ui.home.mypage.MyPageFragment
 import com.festago.festago.presentation.ui.home.ticketlist.TicketListFragment
 import com.festago.festago.presentation.ui.signin.SignInActivity
 import com.festago.festago.presentation.util.repeatOnStarted
+import com.festago.festago.presentation.util.requestNotificationPermission
 import dagger.hilt.android.AndroidEntryPoint
 
 @AndroidEntryPoint
@@ -23,11 +26,24 @@ class HomeActivity : AppCompatActivity() {
 
     private val vm: HomeViewModel by viewModels()
 
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission(),
+    ) { isGranted: Boolean ->
+        if (!isGranted) {
+            Toast.makeText(
+                this,
+                getString(R.string.home_notification_permission_denied),
+                Toast.LENGTH_SHORT
+            ).show()
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         initBinding()
         initView()
         initObserve()
+        requestNotificationPermission(requestPermissionLauncher)
     }
 
     private fun initBinding() {

android/festago/app/src/main/java/com/festago/festago/presentation/ui/ticketentry/TicketEntryActivity.kt

@@ -9,7 +9,7 @@ import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.res.ResourcesCompat
 import com.festago.festago.databinding.ActivityTicketEntryBinding
-import com.festago.festago.presentation.service.TicketEntryService
+import com.festago.festago.presentation.fcm.TicketEntryService
 import com.festago.festago.presentation.util.repeatOnStarted
 import com.google.zxing.BarcodeFormat
 import com.journeyapps.barcodescanner.BarcodeEncoder

android/festago/app/src/main/java/com/festago/festago/presentation/util/PermissionUtil.kt

@@ -0,0 +1,16 @@
+package com.festago.festago.presentation.util
+
+import android.Manifest.permission.POST_NOTIFICATIONS
+import android.app.Activity
+import android.content.pm.PackageManager.PERMISSION_GRANTED
+import android.os.Build
+import androidx.activity.result.ActivityResultLauncher
+import androidx.core.content.ContextCompat
+
+fun Activity.requestNotificationPermission(resultLauncher: ActivityResultLauncher<String>) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+        if (ContextCompat.checkSelfPermission(this, POST_NOTIFICATIONS) != PERMISSION_GRANTED) {
+            resultLauncher.launch(POST_NOTIFICATIONS)
+        }
+    }
+}

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

@@ -32,6 +32,7 @@
     <string name="home_bottom_navigation_festival">축제 목록</string>
     <string name="home_bottom_navigation_ticket">티켓 목록</string>
     <string name="home_bottom_navigation_user">마이페이지</string>
+    <string name="home_notification_permission_denied">알림 권한을 거부했습니다 :(</string>
 
     <!-- Strings related to ticket reserve-->
     <string name="ticket_reserve_tv_date_range">%1s ~ %1s</string>
@@ -129,4 +130,7 @@
     <string name="select_school_tv_error_message">학교 목록 불러오기에 실패했습니다.</string>
     <string name="select_school_tv_select_school">학교 선택</string>
 
+    <!-- Strings related to fcm -->
+    <string name="entry_alert_channel_name">공연 입장 알림</string>
+
 </resources>