From 4cdb0eb56097bd2dbb82a59606c8690e4ebc7ce0 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Fri, 31 May 2024 23:48:39 -0500
Subject: [PATCH] Clean up files not access in 30 days from the cache folder

Or maybe it will be ones created more than 30 days ago, depending on the
device, but still it means the cache won't grow unbounded and we can
always fetch again if really needed.
---
 .../services/XmppConnectionService.java       | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index c78556af618171b9286e286e3019908926534ac3..2dd467ed05c5fbc82c43aaf87d858f48b080a2e9 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -834,6 +834,26 @@ public class XmppConnectionService extends Service {
         });
     }
 
+    protected void cleanupCache() {
+         mStickerScanExecutor.execute(() -> {
+            Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
+            final var now = System.currentTimeMillis();
+            try {
+                for (File file : Files.fileTraverser().breadthFirst(getCacheDir())) {
+                    if (file.isFile() && file.canRead() && file.canWrite()) {
+                        final var attrs = java.nio.file.Files.readAttributes(file.toPath(), java.nio.file.attribute.BasicFileAttributes.class);
+                        if ((now - attrs.lastAccessTime().toMillis()) > 1000 * 60 * 60 * 24 * 30) {
+                            Log.d(Config.LOGTAG, "cleanupCache removing file not used in one week: " + file);
+                            file.delete();
+                        }
+                    }
+                }
+            } catch (final Exception e) {
+                Log.w(Config.LOGTAG, "cleanupCache " + e);
+            }
+        });
+    }
+
     public EmojiSearch emojiSearch() {
         return emojiSearch;
     }
@@ -1595,6 +1615,7 @@ public class XmppConnectionService extends Service {
         mForceDuringOnCreate.set(false);
         toggleForegroundService();
         rescanStickers();
+        cleanupCache();
         internalPingExecutor.scheduleAtFixedRate(this::manageAccountConnectionStatesInternal,10,10,TimeUnit.SECONDS);
         final SharedPreferences sharedPreferences =
                 androidx.preference.PreferenceManager.getDefaultSharedPreferences(this);