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

export default defineConfig({
    testDir: './test-harness/tests',
    /* Fail the build on CI if you accidentally left test.only in the source code. */
    forbidOnly: !!process.env.CI,
    /* Retries for flakiness in CI */
    retries: process.env.CI ? 2 : 0,
    /* Reporter to use. See https://playwright.dev/docs/test-reporters */
    reporter: 'html',
    
    use: {
        /* Base URL to use in actions like `await page.goto('/')`. */
        baseURL: 'http://localhost:3080',
        
        /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
        trace: 'on-first-retry'
    },
    
    projects: [
        {
            name: 'chromium',
            use: { ...devices['Desktop Chrome'] }
        },
        // You can add Firefox/WebKit here later if you want cross-browser testing
    ],

    expect: {
        // Configure global tolerance for visual regression tests
        toHaveScreenshot: {
            // Allows up to 2% of the pixels to be different before failing the test
            maxDiffPixelRatio: 0.02
        }
    },
    
    /* Run your local dev server before starting the tests */
    webServer: {
        command: 'yarn test:start',    // The command to boot test-harness/server.ts
        url: 'http://localhost:3080',  // Playwright pings this until it gets a 2xx response
        reuseExistingServer: !process.env.CI
    }
});