support: Approve sponsorship for remote server customer.

Adds ability to approve a sponsorship request for a customer
attached to a remote server via the remote server support view.

analytics/views/support.py

@@ -388,6 +388,7 @@ def remote_servers_support(
     remote_server_id: Optional[int] = REQ(default=None, converter=to_non_negative_int),
     discount: Optional[Decimal] = REQ(default=None, converter=to_decimal),
     sponsorship_pending: Optional[bool] = REQ(default=None, json_validator=check_bool),
+    approve_sponsorship: bool = REQ(default=False, json_validator=check_bool),
 ) -> HttpResponse:
     context: Dict[str, Any] = {}
 
@@ -411,7 +412,9 @@ def remote_servers_support(
 
         support_view_request = None
 
-        if sponsorship_pending is not None:
+        if approve_sponsorship:
+            support_view_request = SupportViewRequest(support_type=SupportType.approve_sponsorship)
+        elif sponsorship_pending is not None:
             support_view_request = SupportViewRequest(
                 support_type=SupportType.update_sponsorship_status,
                 sponsorship_status=sponsorship_pending,

corporate/lib/stripe.py

@@ -2580,8 +2580,20 @@ class RemoteRealmBillingSession(BillingSession):  # nocoverage
 
     @override
     def approve_sponsorship(self) -> str:
-        # TBD
+        # Sponsorship approval is only a support admin action.
-        return ""
+        assert self.support_session
+
+        self.do_change_plan_type(tier=None, is_sponsored=True)
+        customer = self.get_customer()
+        if customer is not None and customer.sponsorship_pending:
+            customer.sponsorship_pending = False
+            customer.save(update_fields=["sponsorship_pending"])
+            self.write_to_audit_log(
+                event_type=AuditLogEventType.SPONSORSHIP_APPROVED, event_time=timezone_now()
+            )
+        # TODO: Add something (probably email) to let remote realm
+        # organization know that the sponsorship request was approved.
+        return f"Sponsorship approved for {self.billing_entity_display_name}"
 
     @override
     def is_sponsored(self) -> bool:
@@ -2848,8 +2860,20 @@ class RemoteServerBillingSession(BillingSession):  # nocoverage
 
     @override
     def approve_sponsorship(self) -> str:
-        # TBD
+        # Sponsorship approval is only a support admin action.
-        return ""
+        assert self.support_session
+
+        self.do_change_plan_type(tier=None, is_sponsored=True)
+        customer = self.get_customer()
+        if customer is not None and customer.sponsorship_pending:
+            customer.sponsorship_pending = False
+            customer.save(update_fields=["sponsorship_pending"])
+            self.write_to_audit_log(
+                event_type=AuditLogEventType.SPONSORSHIP_APPROVED, event_time=timezone_now()
+            )
+        # TODO: Add something (probably email) to let remote server
+        # organization know that the sponsorship request was approved.
+        return f"Sponsorship approved for {self.billing_entity_display_name}"
 
     @override
     def process_downgrade(self, plan: CustomerPlan) -> None:

templates/analytics/remote_server_support.html

@@ -58,6 +58,17 @@
                 <button type="submit" class="btn btn-default support-submit-button">Update</button>
             </form>
 
+            {% if plan_data[remote_server.id].customer and plan_data[remote_server.id].customer.sponsorship_pending %}
+            <form method="POST" class="">
+                {{ csrf_input }}
+                <input type="hidden" name="remote_server_id" value="{{ remote_server.id }}" />
+                <input type="hidden" name="approve_sponsorship" value="true" />
+                <button class="btn btn-default sea-green small approve-sponsorship-button">
+                    Approve full sponsorship
+                </button>
+            </form>
+            {% endif %}
+
             <form method="POST" class="remote-server-form">
                 <b>Discount</b>:<br />
                 {{ csrf_input }}