import PropTypes from 'prop-types';
import { useState, useCallback } from 'react';

import { FormattedMessage } from 'react-intl';

import classNames from 'classnames';


import { Blurhash } from 'mastodon/components/blurhash';
import { RelativeTimestamp } from 'mastodon/components/relative_timestamp';
import { ShortNumber } from 'mastodon/components/short_number';
import { Skeleton } from 'mastodon/components/skeleton';

import { AuthorLink } from './author_link';

const sharesCountRenderer = (displayNumber, pluralReady) => (
  <FormattedMessage
    id='link_preview.shares'
    defaultMessage='{count, plural, one {{counter} post} other {{counter} posts}}'
    values={{
      count: pluralReady,
      counter: <strong>{displayNumber}</strong>,
    }}
  />
);

export const Story = ({
  url,
  title,
  lang,
  publisher,
  publishedAt,
  author,
  authorAccount,
  sharedTimes,
  thumbnail,
  thumbnailDescription,
  blurhash,
  expanded
}) => {
  const [thumbnailLoaded, setThumbnailLoaded] = useState(false);

  const handleImageLoad = useCallback(() => {
    setThumbnailLoaded(true);
  }, [setThumbnailLoaded]);

  return (
    <div className={classNames('story', { expanded })}>
      <div className='story__details'>
        <div className='story__details__publisher'>
          {publisher ? <span lang={lang}>{publisher}</span> : <Skeleton width={50} />}{publishedAt && <> · <RelativeTimestamp timestamp={publishedAt} /></>}
        </div>

        <a className='story__details__title' lang={lang} href={url} target='blank' rel='noopener'>
          {title ? title : <Skeleton />}
        </a>

        <div className='story__details__shared'>
          {author ? <FormattedMessage id='link_preview.author' className='story__details__shared__author' defaultMessage='By {name}' values={{ name: authorAccount ? <AuthorLink accountId={authorAccount} /> : <strong>{author}</strong> }} /> : <span />}
          {typeof sharedTimes === 'number' ? <span className='story__details__shared__pill'><ShortNumber value={sharedTimes} renderer={sharesCountRenderer} /></span> : <Skeleton width='10ch' />}
        </div>
      </div>

      <a className='story__thumbnail' href={url} target='blank' rel='noopener'>
        {thumbnail ? (
          <>
            <div className={classNames('story__thumbnail__preview', { 'story__thumbnail__preview--hidden': thumbnailLoaded })}><Blurhash hash={blurhash} /></div>
            <img src={thumbnail} onLoad={handleImageLoad} alt={thumbnailDescription} title={thumbnailDescription} lang={lang} />
          </>
        ) : <Skeleton />}
      </a>
    </div>
  );
};

Story.propTypes = {
  url: PropTypes.string,
  title: PropTypes.string,
  lang: PropTypes.string,
  publisher: PropTypes.string,
  publishedAt: PropTypes.string,
  author: PropTypes.string,
  authorAccount: PropTypes.string,
  sharedTimes: PropTypes.number,
  thumbnail: PropTypes.string,
  thumbnailDescription: PropTypes.string,
  blurhash: PropTypes.string,
  expanded: PropTypes.bool,
};