Keep image markers after retention trimming

app/src/main/java/se/ajpanton/notificationlog/ViewLogsFragment.kt

@@ -183,20 +183,24 @@ class ViewLogsFragment : Fragment(R.layout.fragment_view_logs) {
             })
         }
         if (expanded && row.entry.imageId != null) {
-            val image = ImageView(context).apply {
-                adjustViewBounds = true
-                maxHeight = dp(240)
-                contentDescription = "Notification image"
-                setPadding(0, dp(4), 0, 0)
-            }
-            addView(image)
             val imageId = row.entry.imageId
             val appContext = requireContext().applicationContext
+            val contentsContainer = this
             Thread {
                 EncryptedImageStore(appContext).read(imageId)?.let { bytes ->
                     BitmapFactory.decodeByteArray(bytes, 0, bytes.size)
                 }?.let { bitmap ->
-                    activity?.runOnUiThread { if (image.isAttachedToWindow) image.setImageBitmap(bitmap) }
+                    activity?.runOnUiThread {
+                        if (contentsContainer.isAttachedToWindow) {
+                            contentsContainer.addView(ImageView(contentsContainer.context).apply {
+                                setImageBitmap(bitmap)
+                                adjustViewBounds = true
+                                maxHeight = dp(240)
+                                contentDescription = "Notification image"
+                                setPadding(0, dp(4), 0, 0)
+                            })
+                        }
+                    }
                 }
             }.start()
         }

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

@@ -147,20 +147,16 @@ class EncryptedNotificationLogStore(context: Context) {
         if (imageBytes <= limit) return
         chunkFiles().forEach { chunk ->
             if (imageBytes <= limit) return@forEach
-            val entries = readChunk(chunk)
-            var changed = false
-            val retained = entries.map { entry ->
+            readChunk(chunk).forEach { entry ->
                 if (imageBytes > limit && entry.imageId != null) {
                     val image = File(imageDirectory, "${entry.imageId}.bin")
                     imageBytes -= image.length()
+                    // Keep imageId and the original `[image]` text marker in the
+                    // log. The viewer and HTML exporter use the marker whenever
+                    // this retained file is no longer available.
                     image.delete()
-                    changed = true
-                    entry.copy(imageId = null)
-                } else {
-                    entry
                 }
             }
-            if (changed) writeChunk(chunk, retained)
         }
     }