import { defineConfig, devices } from '@playwright/test';

/**
 * Configuration Playwright pour la suite E2E complète de VEZA.
 *
 * Usage :
 *   npm run e2e                          → Chromium seul, parallèle (dev rapide)
 *   npm run e2e:all                      → Tous les navigateurs (pré-commit)
 *   npm run e2e:critical                 → Tests @critical uniquement
 *   PLAYWRIGHT_WORKERS=1 npm run e2e     → Séquentiel (debug rate-limit)
 *
 * Variables d'environnement :
 *   PLAYWRIGHT_BASE_URL   — URL du frontend (défaut: http://localhost:5173)
 *   PORT                  — Port du dev server Vite (défaut: 5173)
 *   PLAYWRIGHT_WORKERS    — Nombre de workers (défaut: 3)
 *   PLAYWRIGHT_ALL        — "1" pour tous les navigateurs (défaut: chromium seul)
 *   CI                    — Active les retries, reporters lourds, tous les browsers
 */

const isCI = !!process.env.CI;
// allBrowsers controls whether the full chromium+firefox+webkit+mobile
// matrix runs. Defaults to chromium-only because:
//   1. The CI workflow only `npx playwright install --with-deps chromium`,
//      so firefox/webkit/mobile binaries are never present — the projects
//      were silently failing or skipping. Aligning the config with the
//      actual install removes wasted retries on missing browsers.
//   2. Multi-browser is a coverage feature for nightly cron, not a
//      per-push gate. Cron can opt in via PLAYWRIGHT_ALL=1.
//   3. 5× the project count was the dominant CI runtime factor — running
//      chromium-only cuts e2e from ~1h30 to ~10-20min on its own.
const allBrowsers = process.env.PLAYWRIGHT_ALL === '1';
// Workers calibrated to the R720 (12 cores). 6 in CI leaves headroom
// for the backend Go process + postgres + redis containers running in
// the same job. Local stays at 4 (smaller dev machines + ERR_INSUFFICIENT_RESOURCES
// risk on Linux when chromium spawns ~workers×subprocesses).
const workerCount = process.env.PLAYWRIGHT_WORKERS
  ? parseInt(process.env.PLAYWRIGHT_WORKERS, 10)
  : isCI
    ? 6
    : 4;

export default defineConfig({
  testDir: '.',
  testMatch: '**/*.spec.ts',
  testIgnore: ['**/node_modules/**'],

  /* ── Parallélisme ──────────────────────────────────────────────── */
  fullyParallel: true,
  workers: workerCount,

  /* ── Timeouts ──────────────────────────────────────────────────── */
  timeout: 30_000,         // 30s par défaut (était 60s)
  expect: { timeout: 10_000 }, // 10s pour les assertions — React SPA needs time to hydrate

  /* ── CI ────────────────────────────────────────────────────────── */
  forbidOnly: isCI,
  retries: isCI ? 2 : 0,

  /* ── Reporters ─────────────────────────────────────────────────── */
  reporter: isCI
    ? [
        ['list'],
        ['json', { outputFile: './test-results/results.json' }],
        ['html', { outputFolder: './playwright-report', open: 'never' }],
        ['github'],
      ]
    : [
        ['list'],
        ['json', { outputFile: './test-results/results.json' }],
      ],

  /* ── Global setup/teardown ─────────────────────────────────────── */
  globalSetup: process.env.PLAYWRIGHT_SKIP_GLOBAL_SETUP ? undefined : './global-setup.ts',
  globalTeardown: './global-teardown.ts',

  /* ── Options partagées ─────────────────────────────────────────── */
  use: {
    baseURL: process.env.PLAYWRIGHT_BASE_URL || `http://127.0.0.1:${process.env.PORT || '5173'}`,

    /* Traces/screenshots/vidéo — désactivés en local pour la perf */
    trace: isCI ? 'on-first-retry' : 'off',
    screenshot: isCI ? 'only-on-failure' : 'off',
    video: isCI ? 'retain-on-failure' : 'off',

    actionTimeout: 8_000,
    navigationTimeout: 12_000,
    locale: 'en-US',

    /* Réutiliser le contexte navigateur entre tests du même fichier */
    launchOptions: {
      args: [
        '--disable-gpu',              // Pas besoin de GPU pour les tests
        '--disable-dev-shm-usage',    // Évite les crashes mémoire partagée
        '--no-sandbox',               // Plus léger
      ],
    },
  },

  projects: [
    /* ── Desktop Chrome — TOUJOURS actif ─────────────────────────── */
    {
      name: 'chromium',
      use: { ...devices['Desktop Chrome'] },
    },

    /* ── Firefox — seulement en CI ou avec PLAYWRIGHT_ALL=1 ──────── */
    ...(allBrowsers
      ? [
          {
            name: 'firefox',
            use: { ...devices['Desktop Firefox'] },
          },
        ]
      : []),

    /* ── Safari — seulement en CI ou avec PLAYWRIGHT_ALL=1 ───────── */
    ...(allBrowsers
      ? [
          {
            name: 'webkit',
            use: { ...devices['Desktop Safari'] },
          },
        ]
      : []),

    /* ── Mobile Chrome — tests @mobile uniquement ────────────────── */
    ...(allBrowsers
      ? [
          {
            name: 'mobile-chrome',
            use: { ...devices['Pixel 5'] },
            grep: /@mobile/,
          },
        ]
      : []),

    /* ── Mobile Safari — tests @mobile uniquement ────────────────── */
    ...(allBrowsers
      ? [
          {
            name: 'mobile-safari',
            use: { ...devices['iPhone 12'] },
            grep: /@mobile/,
          },
        ]
      : []),
  ],

  /* ── Auto-start backend + frontend ────────────────────────────── */
  webServer: [
    {
      command: 'go run cmd/api/main.go',
      cwd: '../../veza-backend-api',
      port: 18080,
      // Backend is pre-started by the e2e workflow (Build + start backend
      // API step) so it can fail-fast on a non-ok health check. Playwright
      // must reuse it instead of trying to spawn a second instance on the
      // same port — the spawn collides on EADDRINUSE and the entire test
      // run silently exits before printing any test output (visible
      // symptom: "No files were found with the provided path:
      // tests/e2e/playwright-report/" in the artifact upload step).
      // In dev, `make dev` (or `make dev-backend-api`) is the canonical
      // pre-start path, so reuse is also correct there.
      reuseExistingServer: true,
      timeout: 30_000,
      env: {
        APP_ENV: 'test',
        DISABLE_RATE_LIMIT_FOR_TESTS: 'true',
        ACCOUNT_LOCKOUT_EXEMPT_EMAILS: 'user@veza.music,artist@veza.music,admin@veza.music,mod@veza.music,new@veza.music',
        RATE_LIMIT_LIMIT: '10000',
        RATE_LIMIT_WINDOW: '60',
      },
    },
    {
      command: 'npm run dev -- --host 127.0.0.1',
      cwd: '../../apps/web',
      port: parseInt(process.env.PORT || '5173', 10),
      // Vite is NOT pre-started by the e2e workflow, so Playwright spawns
      // it in CI. In dev `make dev` already runs vite — reuse to avoid
      // double-spawn on a known port.
      reuseExistingServer: !process.env.CI,
      timeout: 30_000,
    },
  ],
});