import { test as base } from '@playwright/test';

const API_BASE = 'http://localhost:3000/api/v1';

let loginPromise: Promise<{ token: string; user: unknown }> | null = null;

function login(): Promise<{ token: string; user: unknown }> {
  if (!loginPromise) {
    loginPromise = (async () => {
      for (let attempt = 0; attempt < 3; attempt++) {
        try {
          const res = await fetch(`${API_BASE}/auth/login`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ username: 'admin', password: 'Admin@2026' }),
          });
          const json = await res.json();
          if (json.success) {
            return { token: json.data.access_token, user: json.data.user };
          }
        } catch {}
        // Wait before retry on collision
        await new Promise((r) => setTimeout(r, 500 * (attempt + 1)));
      }
      throw new Error('Login failed after 3 attempts');
    })();
  }
  return loginPromise;
}

export const test = base.extend({
  page: async ({ page }, use) => {
    const { token, user } = await login();
    await page.addInitScript((args) => {
      localStorage.setItem('access_token', args.token);
      localStorage.setItem('refresh_token', args.token);
      localStorage.setItem('user', JSON.stringify(args.user));
    }, { token, user });
    await use(page);
  },
});

export { expect } from '@playwright/test';