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

/**
 * Playwright E2E 测试配置。
 *
 * 前置条件：
 * - 后端运行在 http://localhost:8000
 * - 前端运行在 http://localhost:3000
 *
 * 启动方式：
 *   # 终端1：启动后端
 *   cd backend && python -m uvicorn app.main:app --reload --port 8000
 *   # 终端2：启动前端
 *   cd frontend && pnpm dev
 *   # 终端3：跑 E2E 测试
 *   cd frontend && npx playwright test
 */
export default defineConfig({
  testDir: "./e2e",
  fullyParallel: false,
  forbidOnly: !!process.env.CI,
  retries: process.env.CI ? 2 : 0,
  workers: 1,
  reporter: "html",
  timeout: 30_000,
  expect: { timeout: 10_000 },

  use: {
    baseURL: "http://localhost:3000",
    trace: "on-first-retry",
    screenshot: "only-on-failure",
  },

  projects: [
    {
      name: "chromium",
      use: { ...devices["Desktop Chrome"] },
    },
  ],
});