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

/**
 * The register / log in form.
 *
 * It is a modal wherever it appears — over the storefront at /register and
 * /login, and over whatever the customer was doing when they clicked Add to
 * Cart while signed out. One object covers all three, because it is one
 * component (`AuthForm`, shared by `AuthRouteModal` and `AuthPromptModal`).
 *
 * Locators are scoped to the dialog rather than the page. The storefront behind
 * the modal has a "Log in" button of its own — the one that opened this — so an
 * unscoped `getByRole('button', { name: 'Log in' })` matches two things and
 * fails on strict mode, which is a confusing way to learn that the modal is a
 * modal.
 */
export class AuthModal {
  readonly registerDialog: Locator;
  readonly logInDialog: Locator;
  readonly email: Locator;
  readonly firstName: Locator;
  readonly lastName: Locator;
  readonly password: Locator;
  readonly marketingConsent: Locator;
  readonly analyticsConsent: Locator;
  readonly createAccountButton: Locator;
  readonly createAccountTab: Locator;
  readonly logInTab: Locator;
  readonly forgotPasswordButton: Locator;

  constructor(private readonly page: Page) {
    this.registerDialog = page.getByRole('dialog', { name: 'Create an account' });
    this.logInDialog = page.getByRole('dialog', { name: 'Log in' });
    this.email = page.getByRole('textbox', { name: 'Email' });
    this.firstName = page.getByRole('textbox', { name: 'First name' });
    this.lastName = page.getByRole('textbox', { name: 'Last name' });
    this.password = page.getByLabel('Password');
    // Named rather than "the checkbox on the form". There are two consents now
    // and they are deliberately separate (#56), so an unscoped checkbox locator
    // is ambiguous in strict mode — which is how this broke. Matched on the
    // opening words of each sentence so the locator survives the wording being
    // revised, which it has been once already.
    this.marketingConsent = page.getByRole('checkbox', {
      name: /^I want to receive occasional emails/
    });
    this.analyticsConsent = page.getByRole('checkbox', {
      name: /^I agree that what I browse and buy/
    });
    this.createAccountButton = page.getByRole('button', { name: 'Create account' });
    this.createAccountTab = page.getByRole('tab', { name: 'Create Account' });
    this.logInTab = page.getByRole('tab', { name: 'Log In' });
    this.forgotPasswordButton = page.getByRole('button', { name: 'Forgot password?' });
  }

  /** The submit button inside the log in dialog, not the one that opened it. */
  get submitLogInButton(): Locator {
    return this.logInDialog.getByRole('button', { name: 'Log in' });
  }

  /** Closes whichever of the two dialogs is open. */
  get closeButton(): Locator {
    return this.page.getByRole('dialog').getByRole('button', { name: 'Close' });
  }

  /**
   * Signs in through the modal, wherever it was opened from.
   *
   * Scoped to the dialog throughout: the storefront behind it has its own
   * "Log in" button — the one that opened this — and an unscoped fill or click
   * matches both.
   */
  async logIn(email: string, password: string): Promise<void> {
    await this.logInDialog.getByRole('textbox', { name: 'Email' }).fill(email);
    await this.logInDialog.getByLabel('Password').fill(password);
    await this.submitLogInButton.click();
  }

  async gotoRegister(): Promise<void> {
    await this.page.goto('/register');
  }

  async gotoLogIn(): Promise<void> {
    await this.page.goto('/login');
  }

  /** Fills the registration form without submitting, for tests about validation. */
  async fillRegistration(details: {
    email: string;
    password: string;
    firstName?: string;
    lastName?: string;
  }): Promise<void> {
    await this.email.fill(details.email);
    if (details.firstName !== undefined) await this.firstName.fill(details.firstName);
    if (details.lastName !== undefined) await this.lastName.fill(details.lastName);
    await this.password.fill(details.password);
  }

  async submitRegistration(): Promise<void> {
    await this.createAccountButton.click();
  }

  async fillCredentials(email: string, password: string): Promise<void> {
    await this.email.fill(email);
    await this.password.fill(password);
  }

  async submitLogIn(): Promise<void> {
    await this.submitLogInButton.click();
  }

  /**
   * Waits for the modal to close, which is what registering or logging in does.
   *
   * The dialog going away is the completion of the action rather than an
   * assertion about it: a test that carries on while the modal is still over
   * the page clicks the modal's backdrop instead of what it meant to.
   */
  async waitForDismissal(): Promise<void> {
    await expect(this.registerDialog).toHaveCount(0);
    await expect(this.logInDialog).toHaveCount(0);
  }
}