/**
 * Routes tests for /api/v1/deploys (DC-130 — shipdeck bridge proxy).
 *
 * Pattern: build the router with stub deps, hit it via a tiny express app,
 * assert response shapes and the exact proxy interactions with fetchT.
 * The feature gate (SHIPDECK_BRIDGE_URL) is exercised in both states.
 */

const express = require('express');

const FIXTURE_REPOS = { ok: true, repos: [{ dir: '/root/helloworld', name: 'helloworld' }] };
const FIXTURE_SERVICES = {
  ok: true,
  services: [{ name: 'helloworld', host: null, last_action: 'deploy', last_time: '2026-09-14T05:00:00Z', last_epoch: 1789360000 }],
};
const FIXTURE_ROWS = {
  ok: true,
  rows: [{ time: '2026-09-14T05:00:00Z', service: 'helloworld', action: 'deploy', epoch: 1789360000, duration: '30.0s' }],
};

function buildApp(fetchT, env = {}) {
  return buildAppWithLogCapture(fetchT, env, { info: jest.fn(), warn: jest.fn(), error: jest.fn() });
}

function buildAppWithLogCapture(fetchT, env = {}, log) {
  process.env.SHIPDECK_BRIDGE_URL = env.url !== undefined ? env.url : 'http://172.17.0.1:8977';
  process.env.SHIPDECK_BRIDGE_TOKEN_FILE = env.tokenFile !== undefined ? env.tokenFile : '';
  jest.resetModules();
  const mod = require('../../routes/deploys');
  const router = mod({
    asyncHandler: (fn) => async (req, res, next) => {
      try { await fn(req, res, next); } catch (e) { next(e); }
    },
    log,
    auditLogger: { log: jest.fn(async () => {}) },
    fetchT,
  });
  const app = express();
  app.use(express.json());
  app.use('/api/v1/deploys', router);
  // express error middleware → json shape like production
  app.use((err, req, res, next) => {
    res.status(500).json({ success: false, error: err.message });
  });
  return app;
}

// expose log on the fetcher wrapper for log-capture assertions
function jsonFetcherWithLog(responses) {
  const calls = [];
  const log = { info: jest.fn(), warn: jest.fn(), error: jest.fn() };
  return { calls, log, fetchT: null };
}

function jsonFetcher(responses) {
  // responses: map of "METHOD path" -> {status, body}
  const calls = [];
  const log = { info: jest.fn(), warn: jest.fn(), error: jest.fn() };
  const wrapper = {
    calls,
    log,
    fetchT: jest.fn(async (url, opts) => {
      const key = `${(opts && opts.method) || 'GET'} ${url.replace(/^https?:\/\/[^/]+/, '')}`;
      calls.push({ key, opts });
      const r = responses[key] || { status: 404, body: { ok: false, error: 'no fixture' } };
      return {
        status: r.status,
        json: async () => r.body,
      };
    }),
  };
  return wrapper;
}

describe('routes/deploys — feature gate', () => {
  test('501 with clear message when SHIPDECK_BRIDGE_URL unset', async () => {
    const app = buildApp(jsonFetcher({}).fetchT, { url: '' });
    const res = await app.inject ? null : null; // supertest absent; use fetch via server
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/repos`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(501);
    expect(body.success).toBe(false);
    expect(body.error).toMatch(/SHIPDECK_BRIDGE_URL/);
  });
});

describe('routes/deploys — proxied endpoints', () => {
  test('GET /repos proxies and unwraps bridge payload', async () => {
    const f = jsonFetcher({ 'GET /api/repos': { status: 200, body: FIXTURE_REPOS } });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/repos`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(200);
    expect(body.success).toBe(true);
    expect(body.repos).toHaveLength(1);
    expect(body.repos[0].name).toBe('helloworld');
    expect(f.calls[0].opts.headers['X-Shipdeck-Token']).toBeDefined();
  });

  test('GET /services proxies inventory', async () => {
    const f = jsonFetcher({ 'GET /api/services': { status: 200, body: FIXTURE_SERVICES } });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/services`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(200);
    expect(body.services[0].name).toBe('helloworld');
  });

  test('GET /journal rejects invalid service names (400, no proxy call)', async () => {
    const f = jsonFetcher({});
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/journal?service=..%2Fetc`);
    server.close();
    expect(r.status).toBe(400);
    expect(f.calls).toHaveLength(0);
  });

  test('GET /journal passes valid service filter', async () => {
    const f = jsonFetcher({ 'GET /api/journal?service=helloworld': { status: 200, body: FIXTURE_ROWS } });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/journal?service=helloworld`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(200);
    expect(body.rows[0].action).toBe('deploy');
  });

  test('GET /status returns ok:false with output when probe fails (no throw)', async () => {
    const f = jsonFetcher({
      'GET /api/status?service=helloworld': { status: 500, body: { ok: false, output: '[FAIL] http-tailnet' } },
    });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/status?service=helloworld`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(200);
    expect(body.success).toBe(true);
    expect(body.ok).toBe(false);
    expect(body.output).toContain('[FAIL]');
  });

  test('GET /status maps bridge auth failure (401) to 502, not a probe result', async () => {
    const f = jsonFetcher({
      'GET /api/status?service=helloworld': { status: 401, body: { ok: false, error: 'invalid token' } },
    });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/status?service=helloworld`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(502);
    expect(body.success).toBe(false);
    expect(body.error).toMatch(/bridge/i);
  });

  test('GET /status maps unexpected bridge statuses to 502 with error logging', async () => {
    const f = jsonFetcher({
      'GET /api/status?service=helloworld': { status: 404, body: { ok: false, error: 'not found' } },
    });
    const app = buildAppWithLogCapture(f.fetchT, {}, f.log);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/status?service=helloworld`);
    server.close();
    expect(r.status).toBe(502);
    expect(f.log.error).toHaveBeenCalledWith(
      'deploys',
      'status probe: unexpected bridge response',
      expect.objectContaining({ service: 'helloworld', status: 404 }),
    );
  });

  test('GET /status maps bridge connection failure to 502', async () => {
    const fetchT = jest.fn(async () => { throw new Error('ECONNREFUSED'); });
    const app = buildApp(fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/status?service=helloworld`);
    const body = await r.json();
    server.close();
    expect(r.status).toBe(502);
    expect(body.error).toMatch(/unreachable/);
  });

  test('POST /deploy proxies dir and audits', async () => {
    const f = jsonFetcher({
      'POST /api/deploy': { status: 200, body: { ok: true, exit: 0, output: 'DEPLOYED helloworld in 30.0s' } },
    });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/deploy`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ dir: '/root/helloworld' }),
    });
    const body = await r.json();
    server.close();
    expect(r.status).toBe(200);
    expect(body.success).toBe(true);
    expect(body.output).toContain('DEPLOYED');
    expect(JSON.parse(f.calls[0].opts.body).dir).toBe('/root/helloworld');
  });

  test('POST /deploy rejects missing dir (400, no proxy call)', async () => {
    const f = jsonFetcher({});
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/deploy`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({}),
    });
    server.close();
    expect(r.status).toBe(400);
    expect(f.calls).toHaveLength(0);
  });

  test('POST /rollback rejects invalid service name', async () => {
    const f = jsonFetcher({});
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/rollback`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ service: 'bad name; rm' }),
    });
    server.close();
    expect(r.status).toBe(400);
    expect(f.calls).toHaveLength(0);
  });

  test('bridge 500 surfaces as 502 with output excerpt', async () => {
    const f = jsonFetcher({
      'POST /api/deploy': { status: 500, body: { ok: false, exit: 8, output: 'service did not listen' } },
    });
    const app = buildApp(f.fetchT);
    const server = app.listen(0);
    const port = server.address().port;
    const r = await fetch(`http://127.0.0.1:${port}/api/v1/deploys/deploy`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ dir: '/root/helloworld' }),
    });
    const body = await r.json();
    server.close();
    expect(r.status).toBe(502);
    expect(body.success).toBe(false);
  });
});