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

// Use 127.0.0.1 explicitly — on Node.js 18+/Windows, `localhost` may resolve to ::1
// (IPv6) while the HTTP server only binds to 0.0.0.0 (IPv4), causing the webServer
// readiness poll to time out even though the server is listening.
const BASE_URL = process.env.E2E_BASE_URL ?? 'http://127.0.0.1:3001';

// Server env vars injected for local runs. In CI these are set at the step level.
const serverEnv: Record<string, string> = {
    NODE_ENV: 'test',
    MOCK_DATA: 'true',
    STORAGE: process.env.STORAGE ?? 'json',
    JWT_SECRET: process.env.JWT_SECRET ?? 'e2e-test-secret-min-32-chars-aaaa',
    HTTP_REMOTE_USER_ENABLED: 'true',
    HTTP_REMOTE_USER_HEADER_NAME: 'remote-user',
    HTTP_REMOTE_TRUSTED_IPS: process.env.HTTP_REMOTE_TRUSTED_IPS ?? '127.0.0.1,::1,::ffff:127.0.0.1',
};
if (process.env.REDIS_HOST) {
    serverEnv.REDIS_HOST = process.env.REDIS_HOST;
    serverEnv.REDIS_PORT = process.env.REDIS_PORT ?? '6379';
}

export default defineConfig({
    testDir: './tests',
    timeout: 30_000,
    retries: process.env.CI ? 1 : 0,
    workers: 1,
    reporter: [['list'], ['html', { open: 'never' }]],
    use: {
        baseURL: BASE_URL,
        // Default: every test authenticates as e2e-user via trusted header.
        // Tests that need the real login form should override this in their own context.
        extraHTTPHeaders: {
            'remote-user': 'e2e-user',
        },
        trace: 'retain-on-failure',
        video: 'retain-on-failure',
    },
    projects: [
        { name: 'chromium', use: { ...devices['Desktop Chrome'] } },
        { name: 'firefox', use: { ...devices['Desktop Firefox'] } },
    ],
    // Pre-built server must be started before tests. In CI the step does this
    // explicitly. Locally: build types+server+client, cp -r client/dist server/public,
    // then `cd e2e && yarn test` OR let webServer below do it if reuseExistingServer=true
    // is set and the server is already running.
    webServer: {
        command: 'node dist/server/src/index.js',
        cwd: path.resolve(__dirname, '../server'),
        // Poll a dedicated health endpoint — polling '/' can stall in Express 5 when
        // server/public/ doesn't exist in the working directory (no finalhandler match).
        url: `http://127.0.0.1:3001/api/health`,
        timeout: 15_000,
        reuseExistingServer: !process.env.CI,
        env: serverEnv,
        stdout: 'pipe',
        stderr: 'pipe',
    },
});