/**
 * Audit P0-1 (2026-10-27): with TOTP enabled, totpAuthMiddleware answered 401
 * BEFORE jwtApiKeyAuthMiddleware ever ran, so machine credentials (dk_ API
 * keys, JWTs) were dead on every TOTP-protected install — live-verified with
 * a freshly minted key getting 401 on /api/v1/mcp/info. The route-level tests
 * missed it because they inject req.auth directly instead of exercising the
 * real chain.
 *
 * This suite boots the REAL configureMiddleware chain (both auth gates in
 * registration order) and drives synthetic requests through it — the test the
 * codebase was missing. No req.auth injection anywhere.
 */

'use strict';

const express = require('express');
const request = require('supertest');
const crypto = require('crypto');
const configureMiddleware = require('../../src/utilities/middleware');

const KEY = Buffer.alloc(32, 7);

function makeDeps() {
  return {
    siteConfig: { dashboardHost: 'status.sami', tld: '.sami' },
    totpConfig: { enabled: true, sessionDuration: '24h' },
    tailscaleConfig: { enabled: false, requireAuth: false },
    metrics: { recordRequest: jest.fn() },
    auditLogger: { middleware: () => (_req, _res, next) => next() },
    authManager: {
      verifyJWT: jest.fn(async (token) =>
        token === 'good.jwt' ? { userId: 'u1', scope: ['read'] } : null),
      verifyAPIKey: jest.fn(async (key) =>
        key === 'dk_goodkey'
          ? { keyId: 'k1', name: 'test-key', scopes: ['read', 'write'] }
          : null),
    },
    log: { debug: jest.fn(), info: jest.fn(), warn: jest.fn(), error: jest.fn() },
    cryptoUtils: { loadOrCreateKey: () => KEY },
    isValidContainerId: () => true,
    isTailscaleIP: () => false,
    getTailscaleStatus: async () => null,
  };
}

// Mint a session cookie exactly the way setSessionCookie does, so the
// session path of the chain is exercised with real HMAC math too.
function mintSessionCookie() {
  const payload = { v: true, exp: Date.now() + 86400000 };
  const payloadB64 = Buffer.from(JSON.stringify(payload)).toString('base64url');
  const sig = crypto.createHmac('sha256', KEY).update(payloadB64).digest('base64url');
  return `dashcaddy_session=${payloadB64}.${sig}`;
}

function buildApp() {
  const app = express();
  configureMiddleware(app, makeDeps());
  // Probe route registered AFTER the middleware chain, like a real mount.
  // NOT in PUBLIC_ROUTES — it must go through the full chain.
  app.get('/api/v1/mcp/info', (req, res) => res.json({ ok: true, auth: req.auth }));
  return app;
}

describe('middleware chain: machine credentials pass the TOTP gate (audit P0-1)', () => {
  test('valid x-api-key reaches the route when TOTP is enabled', async () => {
    const res = await request(buildApp())
      .get('/api/v1/mcp/info')
      .set('x-api-key', 'dk_goodkey');
    expect(res.status).toBe(200);
    expect(res.body.ok).toBe(true);
    expect(res.body.auth).toMatchObject({ type: 'apikey', keyId: 'k1', name: 'test-key' });
  });

  test('valid Bearer JWT reaches the route when TOTP is enabled', async () => {
    const res = await request(buildApp())
      .get('/api/v1/mcp/info')
      .set('Authorization', 'Bearer good.jwt');
    expect(res.status).toBe(200);
    expect(res.body.auth).toMatchObject({ type: 'jwt', userId: 'u1' });
  });

  test('INVALID api key is still rejected with requiresTotp', async () => {
    const res = await request(buildApp())
      .get('/api/v1/mcp/info')
      .set('x-api-key', 'dk_wrong');
    expect(res.status).toBe(401);
    expect(res.body.error).toContain('DC-110');
    expect(res.body.requiresTotp).toBe(true);
  });

  test('no credentials at all is still rejected with requiresTotp', async () => {
    const res = await request(buildApp()).get('/api/v1/mcp/info');
    expect(res.status).toBe(401);
    expect(res.body.requiresTotp).toBe(true);
  });

  test('valid session cookie still authenticates (session path unchanged)', async () => {
    const res = await request(buildApp())
      .get('/api/v1/mcp/info')
      .set('Cookie', mintSessionCookie());
    expect(res.status).toBe(200);
    expect(res.body.auth).toMatchObject({ type: 'session', scope: ['admin'] });
  });
});