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

/**
 * Stage-7 closure smoke — proves that the four Stage-7 engines
 * (`api-graphql-yoga`, `api-graphql-apollo`, `api-ws-bun`,
 * `api-sse-bun`) coexist on a single Bun.serve host without route
 * collision, and that GraphQL federation across two plugins works
 * identically through both engines.
 */

const FED_QUERY = `
    query Federated {
        pluginA
        pluginB
        bothA
        bothB
    }
`;

interface GraphqlResponse {
    readonly data?: Record<string, unknown> | null;
    readonly errors?: ReadonlyArray<{ readonly message: string }>;
}

test.describe("foundation-stack-engines — Stage-7 coexistence", () => {
    test("1. yoga federates GraphQL across plugin-a + plugin-b", async ({
        request,
    }) => {
        const res = await request.post("/graphql/yoga", {
            data: { query: FED_QUERY, operationName: "Federated" },
        });
        expect(res.status()).toBe(200);
        const body = (await res.json()) as GraphqlResponse;
        expect(body.errors).toBeUndefined();
        expect(body.data).toEqual({
            pluginA: "from plugin-a",
            pluginB: "from plugin-b",
            bothA: "A-half-of-both",
            bothB: "B-half-of-both",
        });
    });

    test("2. apollo federates the same SDL across plugin-a + plugin-b", async ({
        request,
    }) => {
        const res = await request.post("/graphql/apollo", {
            data: { query: FED_QUERY, operationName: "Federated" },
        });
        expect(res.status()).toBe(200);
        const body = (await res.json()) as GraphqlResponse;
        expect(body.errors).toBeUndefined();
        expect(body.data).toEqual({
            pluginA: "from plugin-a",
            pluginB: "from plugin-b",
            bothA: "A-half-of-both",
            bothB: "B-half-of-both",
        });
    });
});