pinafore/routes/_components/status/StatusSpoiler.html

<div class="status-spoiler {{isStatusInNotification ? 'status-in-notification' : ''}} {{isStatusInOwnThread ? 'status-in-own-thread' : ''}}">
  <p>{{{massagedSpoilerText}}}</p>
</div>
<div class="status-spoiler-button {{isStatusInOwnThread ? 'status-in-own-thread' : ''}}">
  <button type="button" delegate-key="{{delegateKey}}">
    {{spoilerShown ? 'Show less' : 'Show more'}}
  </button>
</div>
<style>
  .status-spoiler {
    grid-area: spoiler;
    word-wrap: break-word;
    overflow: hidden;
    white-space: pre-wrap;
    font-size: 0.9em;
    margin: 10px 5px;
  }

  :global(.status-spoiler .status-emoji) {
    width: 20px;
    height: 20px;
    margin: -3px 0;
  }

  .status-spoiler.status-in-own-thread {
    font-size: 1.3em;
    margin: 20px 5px 10px;
  }

  .status-spoiler.status-in-notification {
    color: var(--very-deemphasized-text-color);
  }

  .status-spoiler-button {
    grid-area: spoiler-btn;
    margin: 10px 5px;
  }

  .status-spoiler-button.status-in-own-thread {
  }

  .status-spoiler-button button {
    padding: 5px 10px;
    font-size: 1.1em;
  }
</style>
<script>
  import { store } from '../../_store/store'
  import { registerClickDelegate } from '../../_utils/delegate'
  import { mark, stop } from '../../_utils/marks'
  import { emojifyText } from '../../_utils/emojifyText'
  import escapeHtml from 'escape-html'

  export default {
    oncreate() {
      registerClickDelegate(this, this.get('delegateKey'), () => this.onClickSpoilerButton())
    },
    store: () => store,
    computed: {
      spoilerText: (originalStatus) => originalStatus.spoiler_text,
      emojis: (originalStatus) => originalStatus.emojis,
      massagedSpoilerText: (spoilerText, emojis, $autoplayGifs) => {
        spoilerText = escapeHtml(spoilerText)
        return emojifyText(spoilerText, emojis, $autoplayGifs)
      },
      delegateKey: (uuid) => `spoiler-${uuid}`
    },
    methods: {
      onClickSpoilerButton() {
        requestAnimationFrame(() => {
          mark('clickSpoilerButton')
          let uuid = this.get('uuid')
          let $spoilersShown = this.store.get('spoilersShown')
          $spoilersShown[uuid] = !$spoilersShown[uuid]
          this.store.set({'spoilersShown': $spoilersShown})
          this.fire('recalculateHeight')
          stop('clickSpoilerButton')
        })
      }
    }
  }
</script>