import { expect, test } from "@playwright/test";

/**
 * Cluster C Playwright sweep — content-addressed URL invalidation.
 * Registering a SW configured with `contentAddressed: true` MUST delete
 * every previously-installed cache whose name starts with the
 * configured prefix and is not in the `keep` list. The page-side
 * harness exposes `/sw-cache-names` to read the live cache names.
 */
test.describe("content-addressed cache invalidation (cluster C)", () => {
    test("activate handler drops outdated caches", async ({ page }) => {
        await page.goto("/");
        await page.evaluate(async () => {
            const win = window as unknown as {
                seedStaleCache?: () => Promise<void>;
            };
            if (typeof win.seedStaleCache === "function") {
                await win.seedStaleCache();
            }
            await navigator.serviceWorker.register("/service-worker.js");
            await navigator.serviceWorker.ready;
        });
        const names = await page.evaluate(async () => {
            return await caches.keys();
        });
        // After activate, no stale cache name should remain.
        expect(names.some((n) => n.startsWith("packed-resources-stale"))).toBe(
            false
        );
    });
});