Handle missing Stripe payment link gracefully

Agent-Logs-Url: https://github.com/we-promise/sure/sessions/efba0c75-5f82-41a1-b618-532d38e222da

Co-authored-by: jjmata <187772+jjmata@users.noreply.github.com>

app/models/provider/stripe.rb

@@ -71,6 +71,10 @@ class Provider::Stripe
     return nil if payment_link_id.blank?
 
     client.v1.payment_links.retrieve(payment_link_id).url
+  rescue StandardError => e
+    Sentry.capture_exception(e)
+    Rails.logger.error "Error fetching payment link #{payment_link_id}: #{e.message}"
+    nil
   end
 
   private

test/controllers/settings/payments_controller_test.rb

@@ -27,4 +27,20 @@ class Settings::PaymentsControllerTest < ActionDispatch::IntegrationTest
       text: I18n.t("views.settings.payments.show.one_time_contribution_link_text")
     )
   end
+
+  test "shows payment settings without contribution link when payment link is unavailable" do
+    @family.update!(stripe_customer_id: "cus_test123")
+    stripe = mock
+    stripe.expects(:payment_link_url).returns(nil)
+    Provider::Registry.stubs(:get_provider).with(:stripe).returns(stripe)
+
+    get settings_payment_path
+    assert_response :success
+    assert_select(
+      "a",
+      text: I18n.t("views.settings.payments.show.one_time_contribution_link_text"),
+      count: 0
+    )
+    assert_select "p", text: I18n.t("views.settings.payments.show.payment_via_stripe")
+  end
 end

test/models/provider/stripe_test.rb

@@ -60,4 +60,20 @@ class Provider::StripeTest < ActiveSupport::TestCase
       stripe.payment_link_url(payment_link_id: "plink_test123")
     )
   end
+
+  test "returns nil when payment link retrieval fails" do
+    payment_links = mock
+    payment_links.expects(:retrieve)
+      .with("plink_test123")
+      .raises(StandardError, "not found")
+
+    client = mock
+    client.stubs(:v1).returns(OpenStruct.new(payment_links: payment_links))
+
+    Stripe::StripeClient.stubs(:new).returns(client)
+    Sentry.expects(:capture_exception).with(instance_of(StandardError))
+    stripe = Provider::Stripe.new(secret_key: "foo", webhook_secret: "bar")
+
+    assert_nil stripe.payment_link_url(payment_link_id: "plink_test123")
+  end
 end