import assert from "node:assert/strict";
import { mkdtemp, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import test from "node:test";
import { createMapServer } from "./server.mjs";

test("server stores and returns the editable map JSON", async () => {
  const dataDir = await mkdtemp(join(tmpdir(), "star-map-"));
  const server = createMapServer({ dataDir });

  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
  const { port } = server.address();
  const baseUrl = `http://127.0.0.1:${port}`;

  try {
    const payload = {
      background: "#101010",
      systems: [{ id: "alpha", name: "Alpha", x: 10, y: 20, note: "saved" }],
      connections: []
    };

    const saveResponse = await fetch(`${baseUrl}/api/map`, {
      method: "PUT",
      headers: { "content-type": "application/json" },
      body: JSON.stringify(payload)
    });

    assert.equal(saveResponse.status, 200);
    assert.deepEqual(await saveResponse.json(), { ok: true });

    const loadResponse = await fetch(`${baseUrl}/api/map`);
    assert.equal(loadResponse.status, 200);
    assert.deepEqual(await loadResponse.json(), payload);
  } finally {
    await new Promise((resolve) => server.close(resolve));
    await rm(dataDir, { recursive: true, force: true });
  }
});

test("server rejects invalid map payloads", async () => {
  const dataDir = await mkdtemp(join(tmpdir(), "star-map-"));
  const server = createMapServer({ dataDir });

  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
  const { port } = server.address();

  try {
    const response = await fetch(`http://127.0.0.1:${port}/api/map`, {
      method: "PUT",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({ systems: "bad", connections: [] })
    });

    assert.equal(response.status, 400);
  } finally {
    await new Promise((resolve) => server.close(resolve));
    await rm(dataDir, { recursive: true, force: true });
  }
});