Log when we updated ourselves

so we can test if it is feasible to auto-restart the app

app/src/main/AndroidManifest.xml

@@ -161,6 +161,14 @@
                 <action android:name="android.intent.action.UNARCHIVE_PACKAGE" />
             </intent-filter>
         </receiver>
+
+        <receiver
+            android:name="org.fdroid.install.AppUpdateReceiver"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
+            </intent-filter>
+        </receiver>
     </application>
 
 </manifest>

app/src/main/kotlin/org/fdroid/install/AppUpdateReceiver.kt

@@ -0,0 +1,22 @@
+package org.fdroid.install
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.Intent.ACTION_MY_PACKAGE_REPLACED
+import androidx.annotation.RequiresApi
+import mu.KotlinLogging
+
+class AppUpdateReceiver : BroadcastReceiver() {
+
+  private val log = KotlinLogging.logger {}
+
+  @RequiresApi(35)
+  override fun onReceive(context: Context, intent: Intent) {
+    if (intent.action != ACTION_MY_PACKAGE_REPLACED) {
+      log.warn { "Unknown action: ${intent.action}" }
+      return
+    }
+    log.info { "Intent received, we just updated ourselves!" }
+  }
+}