import { http, HttpResponse } from "msw";
import { server } from "../test/msw";
import { apiFetch } from "./client";

test("body-less POST omits content-type (avoids Fastify empty-body 400)", async () => {
  let contentType: string | null = "unset";
  server.use(
    http.post("http://localhost:8787/sessions/s1/resume", ({ request }) => {
      contentType = request.headers.get("content-type");
      return HttpResponse.json({ id: "s1" });
    }),
  );
  await apiFetch("/sessions/s1/resume", { method: "POST" });
  expect(contentType).toBeNull();
});

test("POST with a body sends application/json content-type", async () => {
  let contentType: string | null = null;
  server.use(
    http.post("http://localhost:8787/sessions/s1/steer", ({ request }) => {
      contentType = request.headers.get("content-type");
      return new HttpResponse(null, { status: 204 });
    }),
  );
  await apiFetch("/sessions/s1/steer", { method: "POST", body: JSON.stringify({ text: "hi" }) });
  expect(contentType).toContain("application/json");
});