billing: Render page for legacy server scheduled for upgrade.

corporate/lib/stripe.py

@@ -794,6 +794,23 @@ class BillingSession(ABC):
         assert plan.end_date is not None
         return plan.end_date.strftime("%B %d, %Y")
 
+    def get_legacy_remote_server_new_plan_name(
+        self, customer: Customer
+    ) -> Optional[str]:  # nocoverage
+        legacy_plan = self.get_remote_server_legacy_plan(
+            customer, CustomerPlan.SWITCH_PLAN_TIER_AT_PLAN_END
+        )
+        if legacy_plan is None:
+            return None
+
+        # This also asserts that such a plan should exist.
+        assert legacy_plan.end_date is not None
+        return CustomerPlan.objects.get(
+            customer=customer,
+            billing_cycle_anchor=legacy_plan.end_date,
+            status=CustomerPlan.NEVER_STARTED,
+        ).name
+
     @catch_stripe_errors
     def create_stripe_customer(self) -> Customer:
         stripe_customer_data = self.get_data_for_stripe_customer()
@@ -1621,6 +1638,14 @@ class BillingSession(ABC):
                     if plan.fixed_price is not None
                     else None
                 )
+                remote_server_legacy_plan_end_date = (
+                    self.get_formatted_remote_server_legacy_plan_end_date(
+                        customer, status=CustomerPlan.SWITCH_PLAN_TIER_AT_PLAN_END
+                    )
+                )
+                legacy_remote_server_new_plan_name = self.get_legacy_remote_server_new_plan_name(
+                    customer
+                )
                 context = {
                     "plan_name": plan.name,
                     "has_active_plan": True,
@@ -1645,6 +1670,9 @@ class BillingSession(ABC):
                     "is_sponsorship_pending": customer.sponsorship_pending,
                     "discount_percent": format_discount_percentage(customer.default_discount),
                     "is_self_hosted_billing": not isinstance(self, RealmBillingSession),
+                    "is_server_on_legacy_plan": remote_server_legacy_plan_end_date is not None,
+                    "remote_server_legacy_plan_end_date": remote_server_legacy_plan_end_date,
+                    "legacy_remote_server_new_plan_name": legacy_remote_server_new_plan_name,
                 }
         return context
 

corporate/models.py

@@ -297,6 +297,7 @@ class CustomerPlan(models.Model):
             CustomerPlan.TIER_CLOUD_STANDARD: "Zulip Cloud Standard",
             CustomerPlan.TIER_CLOUD_PLUS: "Zulip Cloud Plus",
             CustomerPlan.TIER_CLOUD_ENTERPRISE: "Zulip Enterprise",
+            CustomerPlan.TIER_SELF_HOSTED_LEGACY: "Self-managed",
             CustomerPlan.TIER_SELF_HOSTED_BUSINESS: "Zulip Business",
         }[tier]
 

templates/corporate/billing.html

@@ -38,11 +38,20 @@
                     <div id="org-current-plan" class="not-editable-realm-field">
                         {% if free_trial or downgrade_at_end_of_free_trial %}
                         {{ plan_name }} <i>(free trial)</i>
+                        {% elif is_server_on_legacy_plan %}
+                        {{ plan_name }} <i>(legacy plan)</i>
                         {% else %}
                         {{ plan_name }}
                         {% endif %}
                     </div>
                 </div>
+                {% if is_server_on_legacy_plan %}
+                <div class="input-box billing-page-field no-validation">
+                    <div id="legacy-server-push-notification-notice" class="not-editable-realm-field">
+                        <i>This is a legacy plan that ends on {{ remote_server_legacy_plan_end_date }}</i>
+                    </div>
+                </div>
+                {% endif %}
                 <div class="input-box billing-page-field no-validation org-billing-frequency-wrapper"
                   data-current-billing-frequency="{{ billing_frequency }}"
                   {%if free_trial %}data-free-trial="true"{% endif %}
@@ -50,7 +59,7 @@
                   {%if switch_to_monthly_at_end_of_cycle %}data-switch-to-monthly-eoc="true"{% endif %}
                   {%if switch_to_annual_at_end_of_cycle %}data-switch-to-annual-eoc="true"{% endif %}>
                     <label for="org-billing-frequency">Billing frequency</label>
-                    {% if downgrade_at_end_of_free_trial or downgrade_at_end_of_cycle %}
+                    {% if downgrade_at_end_of_free_trial or downgrade_at_end_of_cycle or is_server_on_legacy_plan %}
                     <div class="not-editable-realm-field">
                         {{ billing_frequency }}
                     </div>
@@ -164,7 +173,11 @@
                             <a href="{{ billing_base_url }}/plans/">other features</a> of your current plan.
                             {% else %}
                             {% if charge_automatically %}
+                            {% if is_server_on_legacy_plan %}
+                            Your plan will automatically upgrade to {{ legacy_remote_server_new_plan_name }} on {{ remote_server_legacy_plan_end_date }}.
+                            {% else %}
                             Your plan will automatically renew on <strong>{{ renewal_date }}</strong>.
+                            {% endif %}
                             {% else %}
                             Your next invoice is due on <strong>{{ renewal_date }}</strong>.
                             {% endif %}
@@ -183,7 +196,6 @@
                                 <br />
                                 <i class="billing-page-discount">(includes {{ discount_percent }}% discount)</i>
                                 {% endif %}
-
                             {% endif %}
                             {% endif %}
                         {% else %}
@@ -219,6 +231,13 @@
                                 <object class="loader billing-button-loader" type="image/svg+xml" data="{{ static('images/loading/loader-white.svg') }}"></object>
                             </button>
                         </div>
+                    {% elif is_server_on_legacy_plan %}
+                        <div class="plan-toggle-action input-box billing-page-field no-validation" id="cancel-legacy-server-upgrade">
+                            <button class="cancel-legacy-server-upgrade-button plan-toggle-action-button">
+                                <span class="billing-button-text">Cancel upgrade</span>
+                                <object class="loader billing-button-loader" type="image/svg+xml" data="{{ static('images/loading/loader-white.svg') }}"></object>
+                            </button>
+                        </div>
                     {% else %}
                         <div class="cancel-current-plan plan-toggle-action input-box billing-page-field no-validation" id="cancel-subscription">
                             <button class="cancel-current-plan-button plan-toggle-action-button">

web/styles/portico/billing.css

@@ -538,6 +538,7 @@ input[name="licenses"] {
     width: 150px;
 }
 
+#billing-page-details #legacy-server-push-notification-notice,
 #billing-page-details .next-payment-info {
     width: 450px;
     padding-top: 0;
@@ -669,3 +670,7 @@ input[name="licenses"] {
 #server-login-error {
     text-align: center;
 }
+
+#upgrade-page-details #due-today-for-future-update-wrapper {
+    display: none;
+}