import { render, screen } from '@testing-library/react';
import user from '@testing-library/user-event';
import { Validator } from 'fluentvalidation-ts';
import React from 'react';
import { useForm } from 'react-hook-form';
import { fluentValidationResolver } from '../fluentvalidation-ts';

const USERNAME_REQUIRED_MESSAGE = 'username field is required';
const PASSWORD_REQUIRED_MESSAGE = 'password field is required';

type FormData = {
  username: string;
  password: string;
};

class FormDataValidator extends Validator<FormData> {
  constructor() {
    super();

    this.ruleFor('username').notEmpty().withMessage(USERNAME_REQUIRED_MESSAGE);
    this.ruleFor('password').notEmpty().withMessage(PASSWORD_REQUIRED_MESSAGE);
  }
}

interface Props {
  onSubmit: (data: FormData) => void;
}

function TestComponent({ onSubmit }: Props) {
  const { register, handleSubmit } = useForm<FormData>({
    resolver: fluentValidationResolver(new FormDataValidator()),
    shouldUseNativeValidation: true,
  });

  return (
    <form onSubmit={handleSubmit(onSubmit)}>
      <input {...register('username')} placeholder="username" />

      <input {...register('password')} placeholder="password" />

      <button type="submit">submit</button>
    </form>
  );
}

test("form's native validation with fluentvalidation-ts", async () => {
  const handleSubmit = vi.fn();
  render(<TestComponent onSubmit={handleSubmit} />);

  // username
  let usernameField = screen.getByPlaceholderText(
    /username/i,
  ) as HTMLInputElement;
  expect(usernameField.validity.valid).toBe(true);
  expect(usernameField.validationMessage).toBe('');

  // password
  let passwordField = screen.getByPlaceholderText(
    /password/i,
  ) as HTMLInputElement;
  expect(passwordField.validity.valid).toBe(true);
  expect(passwordField.validationMessage).toBe('');

  await user.click(screen.getByText(/submit/i));

  // username
  usernameField = screen.getByPlaceholderText(/username/i) as HTMLInputElement;
  expect(usernameField.validity.valid).toBe(false);
  expect(usernameField.validationMessage).toBe(USERNAME_REQUIRED_MESSAGE);

  // password
  passwordField = screen.getByPlaceholderText(/password/i) as HTMLInputElement;
  expect(passwordField.validity.valid).toBe(false);
  expect(passwordField.validationMessage).toBe(PASSWORD_REQUIRED_MESSAGE);

  await user.type(screen.getByPlaceholderText(/username/i), 'joe');
  await user.type(screen.getByPlaceholderText(/password/i), 'password');

  // username
  usernameField = screen.getByPlaceholderText(/username/i) as HTMLInputElement;
  expect(usernameField.validity.valid).toBe(true);
  expect(usernameField.validationMessage).toBe('');

  // password
  passwordField = screen.getByPlaceholderText(/password/i) as HTMLInputElement;
  expect(passwordField.validity.valid).toBe(true);
  expect(passwordField.validationMessage).toBe('');
});