errors: handle notifications internally

2 files changed, 95 insertions, 46 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/activities/start/ErrorNotificationFragment.kt b/app/src/main/java/org/pacien/tincapp/activities/start/ErrorNotificationFragment.kt
new file mode 100644
index 0000000..ed60d63
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/start/ErrorNotificationFragment.kt
@@ -0,0 +1,60 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2023 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.activities.start
+
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import org.pacien.tincapp.activities.BaseFragment
+import org.pacien.tincapp.context.App
+import org.pacien.tincapp.context.AppNotificationManager
+import org.pacien.tincapp.databinding.StartErrorNotificationBinding
+
+/**
+ * @author pacien
+ */
+class ErrorNotificationFragment : BaseFragment() {
+  private val notificationManager by lazy { AppNotificationManager(context!!) }
+  private val notificationListener = OnSharedPreferenceChangeListener { _, _ -> updateView() }
+  private lateinit var viewBinding: StartErrorNotificationBinding
+
+  override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+    viewBinding = StartErrorNotificationBinding.inflate(inflater, container, false)
+    updateView()
+    return viewBinding.root
+  }
+
+  override fun onResume() {
+    super.onResume()
+    notificationManager.registerListener(notificationListener)
+  }
+
+  override fun onPause() {
+    super.onPause()
+    notificationManager.unregisterListener(notificationListener)
+  }
+
+  private fun updateView() {
+    val maybeError = notificationManager.getError()
+    viewBinding.errorNotification = maybeError
+    viewBinding.openManualAction = { App.openURL(maybeError?.manualLink!!) }
+  }
+}
diff --git a/app/src/main/java/org/pacien/tincapp/context/AppNotificationManager.kt b/app/src/main/java/org/pacien/tincapp/context/AppNotificationManager.kt
index d6e21f5..29f72de 100644
--- a/app/src/main/java/org/pacien/tincapp/context/AppNotificationManager.kt
+++ b/app/src/main/java/org/pacien/tincapp/context/AppNotificationManager.kt
@@ -18,70 +18,59 @@
 
 package org.pacien.tincapp.context
 
-import android.app.NotificationChannel
-import android.app.NotificationManager
 import android.content.Context
-import android.content.Intent
-import android.net.Uri
-import android.os.Build
-import androidx.annotation.RequiresApi
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
-import org.pacien.tincapp.R
-import org.pacien.tincapp.utils.PendingIntentUtils
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener
 
 /**
  * @author pacien
  */
 class AppNotificationManager(private val context: Context) {
+  data class ErrorNotification(
+    val title: String,
+    val message: String,
+    val manualLink: String?
+  )
+
   companion object {
-    private const val ERROR_CHANNEL_ID = "org.pacien.tincapp.notification.channels.error"
-    const val ERROR_NOTIFICATION_ID = 0
+    private val STORE_NAME = this::class.java.`package`!!.name
+    private const val STORE_KEY_TITLE = "title"
+    private const val STORE_KEY_MESSAGE = "message"
+    private const val STORE_KEY_MANUAL_LINK = "manual_link"
   }
 
-  init {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) registerChannels()
-  }
+  private val store by lazy { context.getSharedPreferences(STORE_NAME, Context.MODE_PRIVATE)!! }
 
-  fun notifyError(title: String, message: String, manualLink: String? = null) {
-    val notification = NotificationCompat.Builder(context, ERROR_CHANNEL_ID)
-      .setSmallIcon(R.drawable.ic_warning_primary_24dp)
-      .setContentTitle(title)
-      .setContentText(message)
-      .setStyle(NotificationCompat.BigTextStyle().bigText(message))
-      .setHighPriority()
-      .setAutoCancel(true)
-      .apply { if (manualLink != null) setManualLink(manualLink) }
-      .build()
+  fun getError(): ErrorNotification? {
+    if (!store.contains(STORE_KEY_TITLE)) return null;
 
-    NotificationManagerCompat.from(context)
-      .notify(ERROR_NOTIFICATION_ID, notification)
+    return ErrorNotification(
+      store.getString(STORE_KEY_TITLE, null)!!,
+      store.getString(STORE_KEY_MESSAGE, null)!!,
+      store.getString(STORE_KEY_MANUAL_LINK, null)
+    )
   }
 
-  fun dismissAll() {
-    NotificationManagerCompat.from(context).cancelAll()
+  fun notifyError(title: String, message: String, manualLink: String? = null) {
+    store
+      .edit()
+      .putString(STORE_KEY_TITLE, title)
+      .putString(STORE_KEY_MESSAGE, message)
+      .putString(STORE_KEY_MANUAL_LINK, manualLink)
+      .apply()
   }
 
-  @RequiresApi(Build.VERSION_CODES.O)
-  private fun registerChannels() {
-    context.getSystemService(NotificationManager::class.java)
-      .apply {
-        createNotificationChannel(NotificationChannel(
-          ERROR_CHANNEL_ID,
-          context.getString(R.string.notification_error_channel_name),
-          NotificationManager.IMPORTANCE_HIGH
-        ))
-      }
+  fun dismissAll() {
+    store
+      .edit()
+      .clear()
+      .apply()
   }
 
-  private fun NotificationCompat.Builder.setHighPriority() = apply {
-    priority = NotificationCompat.PRIORITY_MAX
-    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) setDefaults(NotificationCompat.DEFAULT_SOUND) // force heads-up notification
+  fun registerListener(listener: OnSharedPreferenceChangeListener) {
+    store.registerOnSharedPreferenceChangeListener(listener)
   }
 
-  private fun NotificationCompat.Builder.setManualLink(manualLink: String) = apply {
-    val intent = Intent(Intent.ACTION_VIEW, Uri.parse(manualLink))
-    val pendingIntent = PendingIntentUtils.getActivity(context, 0, intent, 0)
-    addAction(R.drawable.ic_help_primary_24dp, context.getString(R.string.notification_error_action_open_manual), pendingIntent)
+  fun unregisterListener(listener: OnSharedPreferenceChangeListener) {
+    store.unregisterOnSharedPreferenceChangeListener(listener)
   }
 }