From a1c179f61204275be41b3dab01635adaf3189259 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexis=20M=C3=A9taireau?= <alexis@notmyidea.org>
Date: Sat, 13 Apr 2024 19:52:48 +0200
Subject: [PATCH] feat: add a /stats endpoint

---
 la_chariotte/order/views/stats.py      | 28 +++++++++++++++++++
 la_chariotte/tests/test_views_stats.py | 38 ++++++++++++++++++++++++++
 la_chariotte/urls.py                   |  2 ++
 pyproject.toml                         |  2 +-
 4 files changed, 69 insertions(+), 1 deletion(-)
 create mode 100644 la_chariotte/order/views/stats.py
 create mode 100644 la_chariotte/tests/test_views_stats.py

diff --git a/la_chariotte/order/views/stats.py b/la_chariotte/order/views/stats.py
new file mode 100644
index 0000000..4cf4df9
--- /dev/null
+++ b/la_chariotte/order/views/stats.py
@@ -0,0 +1,28 @@
+import json
+from datetime import datetime, timedelta
+
+from django.http import HttpResponse
+from django.utils.timezone import make_aware
+
+from la_chariotte.accounts.models import CustomUser
+from la_chariotte.order.models import GroupedOrder, Order
+
+
+def stats(request):
+    last_month = make_aware(datetime.today() - timedelta(days=30))
+
+    last_month_grouped_orders = GroupedOrder.objects.filter(
+        deadline__gte=last_month
+    ).count()
+
+    return HttpResponse(
+        json.dumps(
+            {
+                "total_users": CustomUser.objects.count(),
+                "total_grouped_orders": GroupedOrder.objects.count(),
+                "total_orders": Order.objects.count(),
+                "last_month_grouped_orders": last_month_grouped_orders,
+            }
+        ),
+        content_type="application/json",
+    )
diff --git a/la_chariotte/tests/test_views_stats.py b/la_chariotte/tests/test_views_stats.py
new file mode 100644
index 0000000..3323900
--- /dev/null
+++ b/la_chariotte/tests/test_views_stats.py
@@ -0,0 +1,38 @@
+from datetime import datetime, timedelta
+
+from django.contrib import auth
+from django.urls import reverse
+
+from .utils import create_grouped_order, order_items_in_grouped_order
+
+
+def test_stats(client_log):
+    response = client_log.get(reverse("stats"))
+    assert response.status_code == 200
+    assert response.json() == {
+        "total_grouped_orders": 0,
+        "total_orders": 0,
+        "total_users": 1,
+        "last_month_grouped_orders": 0,
+    }
+
+    # Create a new grouped-order, place an order and check that the stats changed.
+    grouped_order = create_grouped_order(
+        days_before_delivery_date=5,
+        days_before_deadline=2,
+        name="gr order test",
+        orga_user=auth.get_user(client_log),
+    )
+    order_items_in_grouped_order(grouped_order)
+
+    grouped_order.deadline = datetime.now() - timedelta(days=10)
+    grouped_order.save()
+
+    response = client_log.get(reverse("stats"))
+    assert response.status_code == 200
+    assert response.json() == {
+        "total_grouped_orders": 1,
+        "total_orders": 3,
+        "total_users": 1,
+        "last_month_grouped_orders": 1,
+    }
diff --git a/la_chariotte/urls.py b/la_chariotte/urls.py
index 611bcc4..0931974 100644
--- a/la_chariotte/urls.py
+++ b/la_chariotte/urls.py
@@ -25,6 +25,7 @@ from django.views.generic.base import TemplateView
 
 from la_chariotte import settings
 from la_chariotte.order.views import JoinGroupedOrderView
+from la_chariotte.order.views.stats import stats
 
 urlpatterns = [
     path("admin/", admin.site.urls),
@@ -83,4 +84,5 @@ urlpatterns = [
         ),
         name="about_chariotte",
     ),
+    path("stats/", stats, name="stats"),
 ]
diff --git a/pyproject.toml b/pyproject.toml
index 7745095..ad899e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
     "icalendar>=5.0.7,<6",
     "base36>=0.1.1,<1",
     "django-weasyprint==1.1.0.post1", # see below
-    "weasyprint==52.5", # pin weasyprint to not depend on latest libpango 
+    "weasyprint==52.5", # pin weasyprint to not depend on latest libpango
     "html2text>=2020.1.16",
     "django-crispy-forms>=2.0,<3",
     "crispy-bulma>=0.11.0,<1",