/**
 * @file ai-proxies-9router.test.js
 * @description `GET /api/ai-proxies/9router` — reports whether a `9router`
 * binary is on the server's PATH (the AI Proxy page shows its Config 9router
 * link only then), and never runs it.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const { describe, it, before, after } = require("node:test");
const assert = require("node:assert/strict");
const path = require("node:path");
const fs = require("node:fs");
const os = require("node:os");

const TMP = fs.mkdtempSync(path.join(os.tmpdir(), "ai-proxies-9router-"));
process.env.CLAUDE_HOME = path.join(TMP, ".claude");

const express = require("express");
const router = require("../routes/ai-proxies");

let server;
let BASE;
const ORIGINAL_PATH = process.env.PATH;
const BIN = path.join(TMP, "bin");

before(async () => {
  fs.mkdirSync(BIN, { recursive: true });
  const app = express();
  app.use("/api/ai-proxies", router);
  await new Promise((resolve) => {
    server = app.listen(0, "127.0.0.1", resolve);
  });
  BASE = `http://127.0.0.1:${server.address().port}`;
});

after(() => {
  process.env.PATH = ORIGINAL_PATH;
  server?.close();
  fs.rmSync(TMP, { recursive: true, force: true });
});

const installed = async () =>
  (await (await fetch(`${BASE}/api/ai-proxies/9router`)).json()).installed;

describe("GET /api/ai-proxies/9router", () => {
  it("is false when no 9router binary is on PATH", async () => {
    process.env.PATH = path.join(TMP, "empty");
    assert.equal(await installed(), false);
  });

  it("is true once an executable 9router is on PATH", async () => {
    const bin = path.join(BIN, "9router");
    fs.writeFileSync(bin, "#!/bin/sh\nexit 1\n", { mode: 0o755 });
    process.env.PATH = BIN;
    assert.equal(await installed(), true);
  });
});