import { Page, Locator, expect } from '@playwright/test';

export class LoginPage {
  readonly page: Page;
  readonly usernameInput: Locator;
  readonly passwordInput: Locator;
  readonly loginButton: Locator;
  readonly registerLink: Locator;
  readonly errorMessage: Locator;

  constructor(page: Page) {
    this.page = page;
    this.usernameInput = page.getByPlaceholder('请输入用户名');
    this.passwordInput = page.getByPlaceholder('请输入密码');
    this.loginButton = page.getByRole('button', { name: '登录' });
    this.registerLink = page.getByRole('link', { name: '立即注册' });
    this.errorMessage = page.locator('[data-sonner-toast]');
  }

  async goto() {
    await this.page.goto('/login');
    await this.page.waitForLoadState('networkidle');
  }

  async login(username: string, password: string) {
    await this.usernameInput.fill(username);
    await this.passwordInput.fill(password);
    await this.loginButton.click();
  }

  async expectLoginSuccess() {
    await expect(this.page).toHaveURL('/');
    await expect(this.page.locator('text=登录成功')).toBeVisible();
  }

  async expectLoginError() {
    await expect(this.errorMessage).toBeVisible();
  }

  async navigateToRegister() {
    await this.registerLink.click();
  }
}