// Guest node:http acceptance proofs: a guest server listens on a port, the page
// reaches it through the SW virtual origin at /~/@<host>/http/<port>/.
import { test, expect, type Page } from "@playwright/test";
import { appUrl } from "./http-golden";

async function bootServer(page: Page, path = "/demo/http.html"): Promise<string> {
  await page.goto(path);
  await expect(page.frameLocator("#app").locator("#hi")).toBeVisible({ timeout: 20_000 });
  return await appUrl(page);
}

test("iframe renders the guest server's HTML", async ({ page }) => {
  await bootServer(page);
  await expect(page.frameLocator("#app").locator("#hi")).toHaveText("Hello from GET /");
  await expect(page.locator("#out")).toHaveText("listening on 3000\n");
  await expect(page.locator("#exit")).toHaveText("…");
});

test("POST body reaches the guest and its response headers reach the page", async ({ page }) => {
  const base = await bootServer(page);
  const res = await page.evaluate(async (base) => {
    const r = await fetch(base + "echo?x=1", { method: "POST", body: "ping" });
    return { status: r.status, text: await r.text(), nib: r.headers.get("x-nib") };
  }, base);
  expect(res).toEqual({ status: 200, text: "ping", nib: "1" });
});

test("a port nobody listens on answers 502", async ({ page }) => {
  const base = await bootServer(page);
  const res = await page.evaluate(async (base) => {
    const r = await fetch(base.replace("/http/3000/", "/http/4000/"));
    return { status: r.status, text: await r.text() };
  }, base);
  expect(res).toEqual({ status: 502, text: "ERR_NIB_NO_LISTENER: nothing is listening on port 4000\n" });
});

test("server.close() lets the process exit 0 and frees the port", async ({ page }) => {
  const base = await bootServer(page);
  const bye = await page.evaluate(async (base) => (await fetch(base + "bye")).text(), base);
  expect(bye).toBe("bye\n");
  await expect(page.locator("#exit")).toHaveText("0", { timeout: 20_000 });
  await expect(page.locator("#out")).toHaveText("listening on 3000\nclosed\n");
  const status = await page.evaluate(async (base) => (await fetch(base)).status, base);
  expect(status).toBe(502);
});

test("ESM server via import http from 'node:http' answers too", async ({ page }) => {
  await bootServer(page, "/demo/http.html?esm");
  await expect(page.frameLocator("#app").locator("#hi")).toHaveText("Hello from GET / (esm)");
  await expect(page.locator("#err")).toHaveText("");
});