about summary refs log tree commit diff
path: root/app/javascript/flavours/glitch/features/status/components/card.js
blob: 4b66760628c0f9ce61113c966d779a6a917c3d26 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
import React from 'react';
import PropTypes from 'prop-types';
import Immutable from 'immutable';
import ImmutablePropTypes from 'react-immutable-proptypes';
import { FormattedMessage } from 'react-intl';
import punycode from 'punycode';
import classnames from 'classnames';
import { decode as decodeIDNA } from 'flavours/glitch/util/idna';
import Icon from 'flavours/glitch/components/icon';
import { useBlurhash } from 'flavours/glitch/util/initial_state';
import { decode } from 'blurhash';
import { debounce } from 'lodash';

const getHostname = url => {
  const parser = document.createElement('a');
  parser.href = url;
  return parser.hostname;
};

const trim = (text, len) => {
  const cut = text.indexOf(' ', len);

  if (cut === -1) {
    return text;
  }

  return text.substring(0, cut) + (text.length > len ? '…' : '');
};

const domParser = new DOMParser();

const addAutoPlay = html => {
  const document = domParser.parseFromString(html, 'text/html').documentElement;
  const iframe = document.querySelector('iframe');

  if (iframe) {
    if (iframe.src.indexOf('?') !== -1) {
      iframe.src += '&';
    } else {
      iframe.src += '?';
    }

    iframe.src += 'autoplay=1&auto_play=1';

    // DOM parser creates html/body elements around original HTML fragment,
    // so we need to get innerHTML out of the body and not the entire document
    return document.querySelector('body').innerHTML;
  }

  return html;
};

export default class Card extends React.PureComponent {

  static propTypes = {
    card: ImmutablePropTypes.map,
    maxDescription: PropTypes.number,
    onOpenMedia: PropTypes.func.isRequired,
    compact: PropTypes.bool,
    defaultWidth: PropTypes.number,
    cacheWidth: PropTypes.func,
    sensitive: PropTypes.bool,
  };

  static defaultProps = {
    maxDescription: 50,
    compact: false,
  };

  state = {
    width: this.props.defaultWidth || 280,
    previewLoaded: false,
    embedded: false,
    revealed: !this.props.sensitive,
  };

  componentWillReceiveProps (nextProps) {
    if (!Immutable.is(this.props.card, nextProps.card)) {
      this.setState({ embedded: false, previewLoaded: false });
    }
    if (this.props.sensitive !== nextProps.sensitive) {
      this.setState({ revealed: !nextProps.sensitive });
    }
  }

  componentDidMount () {
    window.addEventListener('resize', this.handleResize, { passive: true });

    if (this.props.card && this.props.card.get('blurhash')) {
      this._decode();
    }
  }

  componentWillUnmount () {
    window.removeEventListener('resize', this.handleResize);
  }

  componentDidUpdate (prevProps) {
    const { card } = this.props;

    if (card.get('blurhash') && (!prevProps.card || prevProps.card.get('blurhash') !== card.get('blurhash'))) {
      this._decode();
    }
  }

  _decode () {
    if (!useBlurhash) return;

    const hash   = this.props.card.get('blurhash');
    const pixels = decode(hash, 32, 32);

    if (pixels) {
      const ctx       = this.canvas.getContext('2d');
      const imageData = new ImageData(pixels, 32, 32);

      ctx.putImageData(imageData, 0, 0);
    }
  }

  _setDimensions () {
    const width = this.node.offsetWidth;

    if (this.props.cacheWidth) {
      this.props.cacheWidth(width);
    }

    this.setState({ width });
  }

  handleResize = debounce(() => {
    if (this.node) {
      this._setDimensions();
    }
  }, 250, {
    trailing: true,
  });

  handlePhotoClick = () => {
    const { card, onOpenMedia } = this.props;

    onOpenMedia(
      Immutable.fromJS([
        {
          type: 'image',
          url: card.get('embed_url'),
          description: card.get('title'),
          meta: {
            original: {
              width: card.get('width'),
              height: card.get('height'),
            },
          },
        },
      ]),
      0,
    );
  };

  handleEmbedClick = () => {
    const { card } = this.props;

    if (card.get('type') === 'photo') {
      this.handlePhotoClick();
    } else {
      this.setState({ embedded: true });
    }
  }

  setRef = c => {
    this.node = c;

    if (this.node) {
      this._setDimensions();
    }
  }

  setCanvasRef = c => {
    this.canvas = c;
  }

  handleImageLoad = () => {
    this.setState({ previewLoaded: true });
  }

  handleReveal = e => {
    e.preventDefault();
    e.stopPropagation();
    this.setState({ revealed: true });
  }

  renderVideo () {
    const { card }  = this.props;
    const content   = { __html: addAutoPlay(card.get('html')) };
    const { width } = this.state;
    const ratio     = card.get('width') / card.get('height');
    const height    = width / ratio;

    return (
      <div
        ref={this.setRef}
        className='status-card__image status-card-video'
        dangerouslySetInnerHTML={content}
        style={{ height }}
      />
    );
  }

  render () {
    const { card, maxDescription, compact, defaultWidth } = this.props;
    const { width, embedded, revealed } = this.state;

    if (card === null) {
      return null;
    }

    const provider    = card.get('provider_name').length === 0 ? decodeIDNA(getHostname(card.get('url'))) : card.get('provider_name');
    const horizontal  = (!compact && card.get('width') > card.get('height') && (card.get('width') + 100 >= width)) || card.get('type') !== 'link' || embedded;
    const interactive = card.get('type') !== 'link';
    const className   = classnames('status-card', { horizontal, compact, interactive });
    const title       = interactive ? <a className='status-card__title' href={card.get('url')} title={card.get('title')} rel='noopener noreferrer' target='_blank'><strong>{card.get('title')}</strong></a> : <strong className='status-card__title' title={card.get('title')}>{card.get('title')}</strong>;
    const ratio       = card.get('width') / card.get('height');
    const height      = (compact && !embedded) ? (width / (16 / 9)) : (width / ratio);

    const description = (
      <div className='status-card__content'>
        {title}
        {!(horizontal || compact) && <p className='status-card__description'>{trim(card.get('description') || '', maxDescription)}</p>}
        <span className='status-card__host'>{provider}</span>
      </div>
    );

    let embed     = '';
    let canvas = <canvas width={32} height={32} ref={this.setCanvasRef} className={classnames('status-card__image-preview', { 'status-card__image-preview--hidden' : revealed && this.state.previewLoaded })} />;
    let thumbnail = <img src={card.get('image')} alt='' style={{ width: horizontal ? width : null, height: horizontal ? height : null, visibility: revealed ? null : 'hidden' }} onLoad={this.handleImageLoad} className='status-card__image-image' />;
    let spoilerButton = (
      <button type='button' onClick={this.handleReveal} className='spoiler-button__overlay'>
        <span className='spoiler-button__overlay__label'><FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /></span>
      </button>
    );
    spoilerButton = (
      <div className={classnames('spoiler-button', { 'spoiler-button--minified': revealed })}>
        {spoilerButton}
      </div>
    );

    if (interactive) {
      if (embedded) {
        embed = this.renderVideo();
      } else {
        let iconVariant = 'play';

        if (card.get('type') === 'photo') {
          iconVariant = 'search-plus';
        }

        embed = (
          <div className='status-card__image'>
            {canvas}
            {thumbnail}

            {revealed && (
              <div className='status-card__actions'>
                <div>
                  <button onClick={this.handleEmbedClick}><Icon id={iconVariant} /></button>
                  {horizontal && <a href={card.get('url')} target='_blank' rel='noopener noreferrer'><Icon id='external-link' /></a>}
                </div>
              </div>
            )}
            {!revealed && spoilerButton}
          </div>
        );
      }

      return (
        <div className={className} ref={this.setRef} onClick={revealed ? null : this.handleReveal} role={revealed ? 'button' : null}>
          {embed}
          {!compact && description}
        </div>
      );
    } else if (card.get('image')) {
      embed = (
        <div className='status-card__image'>
          {canvas}
          {thumbnail}
        </div>
      );
    } else {
      embed = (
        <div className='status-card__image'>
          <Icon id='file-text' />
        </div>
      );
    }

    return (
      <a href={card.get('url')} className={className} target='_blank' rel='noopener noreferrer' ref={this.setRef}>
        {embed}
        {description}
      </a>
    );
  }

}