Complete settings controls and refresh behavior

app/src/main/java/se/ajpanton/notificationlog/data/EncryptedNotificationLogStore.kt

@@ -8,6 +8,7 @@ import java.io.BufferedOutputStream
 import java.io.DataInputStream
 import java.io.DataOutputStream
 import java.io.FileNotFoundException
+import java.io.File
 
 /**
  * An atomically replaced encrypted event log. It keeps every persisted log field
@@ -16,6 +17,7 @@ import java.io.FileNotFoundException
 class EncryptedNotificationLogStore(context: Context) {
     private val lock = Any()
     private val file = AtomicFile(context.filesDir.resolve(FILE_NAME))
+    private val imageDirectory = File(context.filesDir, IMAGE_DIRECTORY_NAME)
     private val cipher = AesGcmCipher(LogEncryptionKeyProvider().getOrCreate())
 
     fun readAll(): List<NotificationLogEntry> = synchronized(lock) {
@@ -34,6 +36,7 @@ class EncryptedNotificationLogStore(context: Context) {
 
     fun clear() = synchronized(lock) {
         file.delete()
+        imageDirectory.listFiles()?.forEach(File::delete)
     }
 
     private fun write(entries: List<NotificationLogEntry>) {
@@ -79,5 +82,6 @@ class EncryptedNotificationLogStore(context: Context) {
         const val FILE_VERSION = 1
         const val MAX_IV_BYTES = 32
         const val MAX_CIPHER_TEXT_BYTES = 50 * 1024 * 1024
+        const val IMAGE_DIRECTORY_NAME = "notification-images"
     }
 }