Use celery tasks instead of systemd timers for periodic work; and add more tests

twitch/management/commands/cleanup_orphaned_channels.py

@@ -8,7 +8,8 @@ from twitch.models import Channel
 if TYPE_CHECKING:
     from argparse import ArgumentParser
 
-    from debug_toolbar.panels.templates.panel import QuerySet
+    from django.db.models import QuerySet
+
 
 SAMPLE_PREVIEW_COUNT = 10
 

twitch/management/commands/convert_images_to_modern_formats.py

@@ -193,8 +193,8 @@ class Command(BaseCommand):
             img.mode == "P" and "transparency" in img.info
         ):
             # Create white background for transparency
-            background = Image.new("RGB", img.size, (255, 255, 255))
-            rgba_img = img.convert("RGBA") if img.mode == "P" else img
+            background: Image.Image = Image.new("RGB", img.size, (255, 255, 255))
+            rgba_img: Image.Image = img.convert("RGBA") if img.mode == "P" else img
             background.paste(
                 rgba_img,
                 mask=rgba_img.split()[-1] if rgba_img.mode in {"RGBA", "LA"} else None,

twitch/management/commands/watch_imports.py

@@ -17,9 +17,16 @@ logger: logging.Logger = logging.getLogger("ttvdrops.watch_imports")
 
 
 class Command(BaseCommand):
-    """Watch for JSON files in a directory and import them automatically."""
+    """Watch for JSON files in a directory and import them automatically.
 
-    help = "Watch a directory for JSON files and import them automatically"
+    .. deprecated::
+        This command is superseded by the Celery Beat task
+        ``twitch.tasks.scan_pending_twitch_files`` (runs every 10 s via
+        ``ttvdrops-celery-beat.service``).  Keep this command for ad-hoc use
+        or in environments that run without a Celery worker.
+    """
+
+    help = "Watch a directory for JSON files and import them automatically (superseded by Celery Beat)"
     requires_migrations_checks = True
 
     def add_arguments(self, parser: CommandParser) -> None: