import { render, screen } from '@testing-library/react';
import user from '@testing-library/user-event';
import * as t from 'io-ts';
import * as tt from 'io-ts-types';
import React from 'react';
import { useForm } from 'react-hook-form';
import { ioTsResolver } from '..';

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

const schema = t.type({
  username: tt.withMessage(tt.NonEmptyString, () => USERNAME_REQUIRED_MESSAGE),
  password: tt.withMessage(tt.NonEmptyString, () => PASSWORD_REQUIRED_MESSAGE),
});

function TestComponent({
  onSubmit,
}: { onSubmit: (data: t.OutputOf<typeof schema>) => void }) {
  const { register, handleSubmit } = useForm({
    resolver: ioTsResolver(schema),
    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 io-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('');
});