ANPL-1540 add management command to write email addresses for a auth0…

… group to a CSV file (#1201)

Created afeter Susan Baron owner of Segmentation Tool requested all user emails

controlpanel/cli/management/commands/get_customer_emails_csv.py

@@ -0,0 +1,31 @@
+# Standard library
+import csv
+from datetime import datetime
+
+# Third-party
+from django.core.management import BaseCommand
+
+# First-party/Local
+from controlpanel.api import auth0
+
+
+class Command(BaseCommand):
+    help = "Writes a CSV with all customer emails for an auth0 group"
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "group_name",
+            type=str,
+            help="input: The auth0 group name to get customers emails for"
+        )
+
+    def handle(self, *args, **options):
+        group_name = options["group_name"]
+        auth_instance = auth0.ExtendedAuth0()
+        group_id = auth_instance.groups.get_group_id(group_name)
+        timestamp = datetime.now().strftime("%d-%m-%Y_%H%M")
+        with open(f"{group_name}_customers_{timestamp}.csv", "w") as f:
+            writer = csv.writer(f)
+            writer.writerow(["Email"])
+            for customer in auth_instance.groups.get_group_members(group_id):
+                writer.writerow([customer["email"]])