import { test as setup, expect } from '@playwright/test';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

/**
 * Authentication Setup for E2E Tests
 *
 * This setup handles authentication before running tests:
 * 1. Checks if initial setup is required
 * 2. If required, creates an admin user via the setup API
 * 3. Logs in and stores the auth state for reuse
 *
 * Environment variables:
 * - E2E_TEST_EMAIL: Email for test user (default: e2e-test@example.com)
 * - E2E_TEST_PASSWORD: Password for test user (default: TestPassword123!)
 * - E2E_TEST_NAME: Name for test user (default: E2E Test User)
 */

const TEST_EMAIL = process.env.E2E_TEST_EMAIL || 'e2e-test@example.com';
const TEST_PASSWORD = process.env.E2E_TEST_PASSWORD || 'TestPassword123!';
const TEST_NAME = process.env.E2E_TEST_NAME || 'E2E Test User';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
export const STORAGE_STATE = join(__dirname, '../playwright/.auth/user.json');

setup('authenticate', async ({ request, baseURL }) => {
  // Step 1: Check if setup is required
  const setupStatusResponse = await request.get('/api/v1/setup');
  expect(setupStatusResponse.ok()).toBeTruthy();

  const setupStatus = await setupStatusResponse.json();

  if (setupStatus.setupRequired) {
    // Step 2: Run initial setup to create admin user
    console.log('Running initial setup to create test admin user...');
    const setupResponse = await request.post('/api/v1/setup', {
      data: {
        name: TEST_NAME,
        email: TEST_EMAIL,
        password: TEST_PASSWORD,
      },
    });

    if (!setupResponse.ok()) {
      const errorBody = await setupResponse.text();
      throw new Error(`Setup failed: ${setupResponse.status()} - ${errorBody}`);
    }
    console.log('Initial setup completed successfully');
  }

  // Step 3: Login to get auth token
  console.log('Logging in as test user...');
  const loginResponse = await request.post('/api/v1/auth/login', {
    data: {
      email: TEST_EMAIL,
      password: TEST_PASSWORD,
    },
  });

  if (!loginResponse.ok()) {
    const errorBody = await loginResponse.text();
    console.log(`Login failed: ${loginResponse.status()} - ${errorBody}`);

    // If login fails and setup wasn't required, the user might already exist with different credentials
    // This can happen in dev environments
    if (!setupStatus.setupRequired) {
      console.log('Login failed - existing user may have different credentials.');
      console.log('Please set E2E_TEST_EMAIL and E2E_TEST_PASSWORD environment variables');
      console.log('to match an existing user, or clear the database for fresh setup.');
    }
    throw new Error(`Login failed: ${loginResponse.status()} - ${errorBody}`);
  }

  const loginData = await loginResponse.json();
  console.log('Login successful');

  // Step 4: Store the authentication state
  // The login endpoint sets an auth_token cookie, we need to save the storage state
  await request.storageState({ path: STORAGE_STATE });
  console.log(`Auth state saved to ${STORAGE_STATE}`);
});