add scheduler to remove files after 30 minutes instead of after download

app/remove_translated_files.py

@@ -0,0 +1,26 @@
+import atexit
+import os
+import time
+from datetime import datetime
+
+from apscheduler.schedulers.background import BackgroundScheduler
+
+
+def remove_translated_files(upload_dir: str):
+    now = time.mktime(datetime.now().timetuple())
+
+    for f in os.listdir(upload_dir):
+        f = os.path.join(upload_dir, f)
+        if os.path.isfile(f):
+            f_time = os.path.getmtime(f)
+            if (now - f_time) > 1800:  # 30 minutes
+                os.remove(f)
+
+
+def setup(upload_dir):
+    scheduler = BackgroundScheduler(daemon=True)
+    scheduler.add_job(remove_translated_files, "interval", minutes=30, kwargs={'upload_dir': upload_dir})
+    scheduler.start()
+
+    # Shut down the scheduler when exiting the app
+    atexit.register(lambda: scheduler.shutdown())