stripe: Use a function to get free trial days.

corporate/lib/stripe.py

@@ -1813,7 +1813,7 @@ class BillingSession(ABC):
         free_trial_end_date = None
         # Don't show free trial for remote servers on legacy plan.
         if remote_server_legacy_plan_end_date is None:
-            free_trial_days = settings.FREE_TRIAL_DAYS
+            free_trial_days = get_free_trial_days()
             if free_trial_days is not None:
                 _, _, free_trial_end, _ = compute_plan_parameters(
                     tier, False, CustomerPlan.BILLING_SCHEDULE_ANNUAL, None, True
@@ -3621,12 +3621,16 @@ def compute_plan_parameters(
         next_invoice_date = add_months(billing_cycle_anchor, 1)
     if free_trial:
         period_end = billing_cycle_anchor + timedelta(
-            days=assert_is_not_none(settings.FREE_TRIAL_DAYS)
+            days=assert_is_not_none(get_free_trial_days())
         )
         next_invoice_date = period_end
     return billing_cycle_anchor, next_invoice_date, period_end, price_per_license
 
 
+def get_free_trial_days() -> Optional[int]:
+    return settings.FREE_TRIAL_DAYS
+
+
 def is_free_trial_offer_enabled() -> bool:
     return settings.FREE_TRIAL_DAYS not in (None, 0)
 

corporate/views/portico.py

@@ -13,7 +13,11 @@ from corporate.lib.decorator import (
     authenticated_remote_realm_management_endpoint,
     authenticated_remote_server_management_endpoint,
 )
-from corporate.lib.stripe import RemoteRealmBillingSession, RemoteServerBillingSession
+from corporate.lib.stripe import (
+    RemoteRealmBillingSession,
+    RemoteServerBillingSession,
+    get_free_trial_days,
+)
 from corporate.models import CustomerPlan, get_current_plan_by_customer, get_customer_by_realm
 from zerver.context_processors import get_realm_from_request, latest_info_context
 from zerver.decorator import add_google_analytics
@@ -86,7 +90,7 @@ def plans_view(request: HttpRequest) -> HttpResponse:
     context = PlansPageContext(
         is_cloud_realm=True,
         sponsorship_url=reverse("sponsorship_request"),
-        free_trial_days=settings.FREE_TRIAL_DAYS,
+        free_trial_days=get_free_trial_days(),
         is_sponsored=realm is not None and realm.plan_type == Realm.PLAN_TYPE_STANDARD_FREE,
     )
     if is_subdomain_root_or_alias(request):
@@ -133,7 +137,7 @@ def remote_realm_plans_page(
         sponsorship_url=reverse(
             "remote_realm_sponsorship_page", args=(billing_session.remote_realm.uuid,)
         ),
-        free_trial_days=settings.FREE_TRIAL_DAYS,
+        free_trial_days=get_free_trial_days(),
         billing_base_url=billing_session.billing_base_url,
         is_sponsored=billing_session.is_sponsored(),
     )
@@ -168,7 +172,7 @@ def remote_server_plans_page(
         sponsorship_url=reverse(
             "remote_server_sponsorship_page", args=(billing_session.remote_server.uuid,)
         ),
-        free_trial_days=settings.FREE_TRIAL_DAYS,
+        free_trial_days=get_free_trial_days(),
         billing_base_url=billing_session.billing_base_url,
         is_sponsored=billing_session.is_sponsored(),
     )