astuto/app/javascript/components/Comments/NewComment.tsx

import * as React from 'react';
import { FormEvent } from 'react';

import Button from '../shared/Button';
import Spinner from '../shared/Spinner';

interface Props {
  body: string;
  parentId: number;
  isSubmitting: boolean;
  handleChange(e: FormEvent): void;
  handleSubmit(body: string, parentId: number): void;

  isLoggedIn: boolean;
}

const NewComment = ({
  body,
  parentId,
  isSubmitting,
  handleChange,
  handleSubmit,

  isLoggedIn,
}: Props) => (
  <div className="newCommentForm">
    {
      isLoggedIn ?
        <React.Fragment>
          <textarea
            value={body}
            onChange={handleChange}
            placeholder="Leave a comment"
            autoFocus
            className="newCommentBody"
          />
          <Button
            onClick={() => handleSubmit(body, parentId)}
            className="submitCommentButton">
            { isSubmitting ? <Spinner /> : 'Submit' }
          </Button>
        </React.Fragment>
      :
        <a href="/users/sign_in" className="loginInfo">You need to log in to post comments.</a>
    }
  </div>
);

export default NewComment;