Improve backfill_changesets command (#685)

* Set backfill_changesets default behaviour to backfill the last day changesets

* Fix test command arguments

* Fix typo

* Fix start_date and end_date access

Author: willemarcel

osmchadjango/changeset/management/commands/backfill_changesets.py

@@ -1,4 +1,4 @@
-from datetime import date
+from datetime import date, datetime, timedelta
 
 from django.core.management.base import BaseCommand
 
@@ -11,19 +11,24 @@ class Command(BaseCommand):
         Start and end dates should be in YYYY-MM-DD format."""
 
     def add_arguments(self, parser):
-        parser.add_argument("start_date", nargs=1, type=str)
-        parser.add_argument("end_date", nargs=1, type=str)
+        parser.add_argument("--start_date", type=str)
+        parser.add_argument("--end_date", type=str)
 
     def handle(self, *args, **options):
+        # if start_date is not defined, set it as yesterday
         try:
-            end_date = date.fromisoformat(options["end_date"][0])
+            start_date = date.fromisoformat(options["start_date"])
         except (ValueError, TypeError):
-            end_date = date.today()
+            start_date = date.today() - timedelta(days=1)
+        # if end_date is not defined, set it as today
+        try:
+            end_date = date.fromisoformat(options["end_date"])
+        except (ValueError, TypeError):
+            end_date = datetime.now()
 
         cl = Changeset.objects.filter(
-            date__gte=date.fromisoformat(options["start_date"][0]),
-            date__lte=end_date
-        ).values_list('id')
+            date__gte=start_date, date__lte=end_date
+        ).values_list("id")
         cl = [c[0] for c in cl]
 
         id = cl[len(cl) - 1]

osmchadjango/changeset/tests/test_management_commands.py

@@ -111,7 +111,9 @@ def setUp(self):
         ChangesetFactory(id='1238', date=datetime(2021,1,3))
 
     def test_backfill(self):
-        call_command("backfill_changesets", '2021-01-01', '2021-01-04')
+        call_command(
+            "backfill_changesets", "--start_date=2021-01-01", "--end_date=2021-01-04"
+        )
         cl = [i[0] for i in Changeset.objects.all().values_list('id')]
         self.assertEqual(len(cl), 5)
         self.assertIn(1235, cl)