Add OrganisationSubscriptionInformationCache to django admin

api/organisations/admin.py

@@ -4,7 +4,12 @@
 from django.contrib import admin
 from django.db.models import Count, Q
 
-from organisations.models import Organisation, Subscription, UserOrganisation
+from organisations.models import (
+    Organisation,
+    OrganisationSubscriptionInformationCache,
+    Subscription,
+    UserOrganisation,
+)
 from projects.models import Project
 
 
@@ -13,6 +18,8 @@ class ProjectInline(admin.StackedInline):
     extra = 0
     show_change_link = True
 
+    classes = ("collapse",)
+
 
 class SubscriptionInline(admin.StackedInline):
     model = Subscription
@@ -29,12 +36,73 @@ class UserOrganisationInline(admin.TabularInline):
     verbose_name_plural = "Users"
 
 
+class OrganisationSubscriptionInformationCacheInline(admin.StackedInline):
+    model = OrganisationSubscriptionInformationCache
+    extra = 0
+    show_change_link = False
+    classes = ("collapse",)
+
+    fieldsets = (
+        (
+            None,
+            {
+                "fields": [],
+                "description": "This data is relevant in SaaS only. It should all be managed automatically via "
+                "webhooks from Chargebee and recurring tasks but may need to be edited in certain "
+                "situtations.",
+            },
+        ),
+        (
+            "Usage Information",
+            {
+                "classes": ["collapse"],
+                "fields": ["api_calls_24h", "api_calls_7d", "api_calls_30d"],
+            },
+        ),
+        (
+            "Billing Information",
+            {
+                "classes": ["collapse"],
+                "fields": [
+                    "current_billing_term_starts_at",
+                    "current_billing_term_ends_at",
+                    "chargebee_email",
+                ],
+            },
+        ),
+        (
+            "Allowances",
+            {
+                "description": "These fields shouldn't need to be edited, as it should be managed automatically, "
+                "but sometimes things get out of sync - in which case, we can edit them here.",
+                "fields": [
+                    "allowed_seats",
+                    "allowed_30d_api_calls",
+                    "allowed_projects",
+                    "audit_log_visibility_days",
+                    "feature_history_visibility_days",
+                ],
+            },
+        ),
+    )
+
+    readonly_fields = (
+        "api_calls_24h",
+        "api_calls_7d",
+        "api_calls_30d",
+        "current_billing_term_starts_at",
+        "current_billing_term_ends_at",
+        "chargebee_email",
+    )
+
+
 @admin.register(Organisation)
 class OrganisationAdmin(admin.ModelAdmin):
     inlines = [
         ProjectInline,
         SubscriptionInline,
         UserOrganisationInline,
+        OrganisationSubscriptionInformationCacheInline,
     ]
     list_display = (
         "id",