Add analyze snapshots command

server/books/management/commands/analyze_snapshots.py

@@ -0,0 +1,20 @@
+from django.core.management import BaseCommand
+from django.db.models import Count
+from django.db.models.functions import ExtractYear
+from books.models import Snapshot
+
+
+# Query to group by creator's email, count the snapshots, and order by the count
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        snapshots_grouped = (Snapshot.objects
+                             .annotate(year=ExtractYear('created'))
+                             .values('year', 'creator__email')
+                             .annotate(count=Count('id'))
+                             .order_by('year', '-count'))  # Order by year and then by count (descending)
+
+        # To access the results
+        for snapshot in snapshots_grouped:
+            modified_email = snapshot['creator__email'].split('@')[0] + '@skillbox.ch'
+            print(f"Year: {snapshot['year']}, Creator Email: {modified_email}, Count: {snapshot['count']}")