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

/**
 * Stage-7 closure smoke — proves all four engines are mounted on the
 * SAME Bun.serve listener at distinct routes (no path collision).
 */

interface EngineDescriptor {
    readonly name: string;
    readonly path: string;
    readonly method: string;
}

test.describe("foundation-stack-engines — all engines mounted", () => {
    test("5. /internal/engines lists yoga + apollo + ws-bun + sse-bun", async ({
        request,
    }) => {
        const res = await request.get("/internal/engines");
        expect(res.status()).toBe(200);
        const body = (await res.json()) as {
            engines: ReadonlyArray<EngineDescriptor>;
            host: { wsConnections: number };
        };
        const names = body.engines.map((e) => e.name).sort();
        expect(names).toEqual(["apollo", "sse-bun", "ws-bun", "yoga"]);
        const paths = body.engines.map((e) => e.path);
        expect(new Set(paths).size).toBe(paths.length); // no collisions
        expect(paths).toContain("/graphql/yoga");
        expect(paths).toContain("/graphql/apollo");
        expect(paths).toContain("/ws");
        expect(paths).toContain("/sse");
    });
});