Tool to remove all alone Photos, from deleted galeries

photologue/management/commands/alone_photo.py

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+# This file is part of photo21
+# Copyright (C) 2022  Amicale des élèves de l'ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import hashlib
+
+from django.core.management.base import BaseCommand, CommandError
+from photologue.models import Gallery, Photo
+
+
+class Command(BaseCommand):
+    help = "List all alone photo, photo that have any galleries"
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "-a",
+            "--all",
+            action="store_true",
+            help="Try to find alone photos",
+        )
+        parser.add_argument(
+            "-c",
+            "--count",
+            action="store_true",
+            help="Count the numerber of alone photos",
+        )
+        parser.add_argument("-d", "--delete", action="store_true")
+
+    def handle(self, *args, **options):
+        # Collect all required Photos and do filtering stuff
+        photos = Photo.objects.all()
+        photos = photos.filter(galleries=None)
+
+        # printing
+
+        count = photos.count()
+
+        self.stdout.write(f"There is {count} photo alone without a galerie")
+
+        if options["count"]:
+            return  # End process
+
+        i = 1  # counter
+        for photo in photos:
+            self.stdout.write(
+                "Photo is alone without a galerie : {}".format(photo.slug)
+            )
+            # Delete them if --delete
+            if options["delete"]:
+                self.stdout.write("  Deleting alone photo {} :".format(photo.slug))
+                photo.delete()
+
+                if i % 10 == 0:
+                    i = 1