fix: keep paid limits during Stripe retries (#386)

apps/web/src/lib/subscription-status.ts

@@ -0,0 +1,11 @@
+const ENTITLED_SUBSCRIPTION_STATUSES = new Set([
+  "active",
+  "trialing",
+  "past_due",
+]);
+
+export function isEntitledSubscriptionStatus(
+  status: string | null | undefined,
+) {
+  return Boolean(status && ENTITLED_SUBSCRIPTION_STATUSES.has(status));
+}

apps/web/src/lib/subscription-status.unit.test.ts

@@ -0,0 +1,20 @@
+import { describe, expect, it } from "vitest";
+import { isEntitledSubscriptionStatus } from "~/lib/subscription-status";
+
+describe("isEntitledSubscriptionStatus", () => {
+  it("treats retrying subscriptions as entitled", () => {
+    expect(isEntitledSubscriptionStatus("past_due")).toBe(true);
+  });
+
+  it("treats active and trialing subscriptions as entitled", () => {
+    expect(isEntitledSubscriptionStatus("active")).toBe(true);
+    expect(isEntitledSubscriptionStatus("trialing")).toBe(true);
+  });
+
+  it("treats exhausted or incomplete subscriptions as not entitled", () => {
+    expect(isEntitledSubscriptionStatus("unpaid")).toBe(false);
+    expect(isEntitledSubscriptionStatus("canceled")).toBe(false);
+    expect(isEntitledSubscriptionStatus("incomplete")).toBe(false);
+    expect(isEntitledSubscriptionStatus(null)).toBe(false);
+  });
+});