Add member count stats table and update it hourly

apiserver/apiserver/api/management/commands/run_hourly.py

@@ -1,15 +1,25 @@
 from django.core.management.base import BaseCommand, CommandError
-from django.utils.timezone import now
+from django.utils.timezone import now, pytz
 from apiserver.api import models, utils, utils_stats
 
+from datetime import datetime
 import time
 
+def today_alberta_tz():
+    return datetime.now(pytz.timezone('America/Edmonton')).date()
+
 class Command(BaseCommand):
     help = 'Tasks to run on the portal hourly.'
 
     def generate_stats(self):
         utils_stats.calc_next_events()
-        utils_stats.calc_member_counts()
+        member_count, green_count = utils_stats.calc_member_counts()
+
+        # do this hourly in case an admin causes a change
+        models.StatsMemberCount.objects.update_or_create(
+            date=today_alberta_tz(),
+            defaults=dict(member_count=member_count, green_count=green_count),
+        )
 
 
     def handle(self, *args, **options):

apiserver/apiserver/api/models.py

@@ -128,6 +128,11 @@ class Training(models.Model):
 class MetaInfo(models.Model):
     backup_id = models.TextField()
 
+class StatsMemberCount(models.Model):
+    date = models.DateField(default=today_alberta_tz)
+    member_count = models.IntegerField()
+    green_count = models.IntegerField()
+
 class HistoryIndex(models.Model):
     content_type = models.ForeignKey(ContentType, null=True, on_delete=models.SET_NULL)
     object_id = models.PositiveIntegerField()

apiserver/apiserver/api/utils_stats.py

@@ -53,12 +53,15 @@ def calc_member_counts():
     num_due = not_paused.filter(status='Due').count()
     num_overdue = not_paused.filter(status='Overdue').count()
 
-    num_active = num_current + num_prepaid + num_due + num_overdue
-    num_former = members.count() - num_active
+    member_count = num_current + num_prepaid + num_due + num_overdue
+    paused_count = members.count() - member_count
+    green_count = num_current + num_prepaid
 
-    cache.set('member_count', num_active)
-    cache.set('paused_count', num_former)
-    cache.set('green_count', num_current + num_prepaid)
+    cache.set('member_count', member_count)
+    cache.set('paused_count', paused_count)
+    cache.set('green_count', green_count)
+
+    return member_count, green_count
 
 def check_minecraft_server():
     if secrets.MINECRAFT: