playwright.config.ts

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

/**
 * Playwright E2E config (industry-standard Next.js pattern).
 *
 * - Uses port 3100 by default so a normal `next dev` on :3000 does not collide.
 * - Local: starts `next dev -p <port>` (no prior build) unless a server is already on that port.
 * - CI: assumes `npm run build` ran in the same job; starts `PORT=<port> npm run start`.
 *
 * Skip auto-start: `PLAYWRIGHT_SKIP_WEB_SERVER=1 npx playwright test` (point `PLAYWRIGHT_BASE_URL` at your preview).
 */
const e2ePort = process.env.PLAYWRIGHT_E2E_PORT ?? "3100";
const baseURL =
  process.env.PLAYWRIGHT_BASE_URL ?? `http://127.0.0.1:${e2ePort}`;

const webServer = process.env.PLAYWRIGHT_SKIP_WEB_SERVER
  ? undefined
  : {
      // `output: "standalone"` — `next start` is not supported; use the standalone server entry.
      command: process.env.CI
        ? `cross-env PORT=${e2ePort} HOSTNAME=127.0.0.1 node .next/standalone/server.js`
        : `npx next dev -p ${e2ePort}`,
      url: baseURL,
      reuseExistingServer: !process.env.CI,
      timeout: 120_000,
    };

export default defineConfig({
  testDir: "e2e",
  fullyParallel: true,
  forbidOnly: !!process.env.CI,
  retries: process.env.CI ? 2 : 0,
  workers: process.env.CI ? 1 : undefined,
  reporter: [
    ["list"],
    ["html", { open: "never", outputFolder: "playwright-report" }],
  ],
  use: {
    baseURL,
    trace: "on-first-retry",
    screenshot: "only-on-failure",
    video: "retain-on-failure",
  },
  projects: [{ name: "chromium", use: { ...devices["Desktop Chrome"] } }],
  webServer,
});