webapp/src/components/Topic/Card.tsx

import { capitalize } from '../../utils'
import styles from './Card.module.scss'
import { createMemo, createSignal, Show } from 'solid-js'
import type { Topic } from '../../graphql/types.gen'
import { FollowingEntity } from '../../graphql/types.gen'

import { follow, unfollow } from '../../stores/zine/common'
import { clsx } from 'clsx'
import { useSession } from '../../context/session'
import { ShowOnlyOnClient } from '../_shared/ShowOnlyOnClient'
import { Icon } from '../_shared/Icon'
import { useLocalize } from '../../context/localize'
import { CardTopic } from '../Feed/CardTopic'

interface TopicProps {
  topic: Topic
  compact?: boolean
  subscribed?: boolean
  shortDescription?: boolean
  subscribeButtonBottom?: boolean
  additionalClass?: string
  isTopicInRow?: boolean
  iconButton?: boolean
  showPublications?: boolean
  showDescription?: boolean
  isCardMode?: boolean
}

export const TopicCard = (props: TopicProps) => {
  const { t } = useLocalize()
  const {
    session,
    isSessionLoaded,
    actions: { loadSession }
  } = useSession()

  const [isSubscribing, setIsSubscribing] = createSignal(false)

  const subscribed = createMemo(() => {
    if (!session()?.user?.slug || !session()?.news?.topics) {
      return false
    }

    return session()?.news.topics.includes(props.topic.slug)
  })

  const subscribe = async (really = true) => {
    setIsSubscribing(true)

    await (really
      ? follow({ what: FollowingEntity.Topic, slug: props.topic.slug })
      : unfollow({ what: FollowingEntity.Topic, slug: props.topic.slug }))

    await loadSession()
    setIsSubscribing(false)
  }

  return (
    <div class={styles.topicContainer}>
      <div
        class={styles.topic}
        classList={{
          row: !props.subscribeButtonBottom,
          [styles.topicCompact]: props.compact,
          [styles.topicInRow]: props.isTopicInRow
        }}
      >
        <div classList={{ 'col-sm-18 col-md-24 col-lg-14 col-xl-15': !props.subscribeButtonBottom }}>
          <Show when={props.topic.title && !props.isCardMode}>
            <h3 class={styles.topicTitle}>
              <a href={`/topic/${props.topic.slug}`}>{capitalize(props.topic.title || '')}</a>
            </h3>
          </Show>

          <Show when={props.isCardMode}>
            <CardTopic title={props.topic.title} slug={props.topic.slug} class={styles.cardMode} />
          </Show>

          <Show when={props.topic.pic}>
            <div class={styles.topicAvatar}>
              <a href={`/topic/${props.topic.slug}`}>
                <img src={props.topic.pic} alt={props.topic.title} />
              </a>
            </div>
          </Show>

          <Show when={props.showDescription && props.topic?.body}>
            <div
              class={clsx(styles.topicDescription, 'text-truncate')}
              classList={{ [styles.topicDescriptionShort]: props.shortDescription }}
            >
              {props.topic.body}
            </div>
          </Show>
        </div>
        <div
          class={styles.controlContainer}
          classList={{ 'col-sm-6 col-md-24 col-lg-10 col-xl-9': !props.subscribeButtonBottom }}
        >
          <ShowOnlyOnClient>
            <Show when={isSessionLoaded()}>
              <button
                onClick={() => subscribe(!subscribed())}
                class="button--light button--subscribe-topic"
                classList={{
                  [styles.isSubscribing]: isSubscribing(),
                  [styles.isSubscribed]: subscribed()
                }}
                disabled={isSubscribing()}
              >
                <Show when={props.iconButton}>
                  <Show when={subscribed()} fallback="+">
                    <Icon name="check-subscribed" />
                  </Show>
                </Show>
                <Show when={!props.iconButton}>
                  <Show when={subscribed()} fallback={t('Follow')}>
                    <span class={styles.buttonUnfollowLabel}>{t('Unfollow')}</span>
                    <span class={styles.buttonSubscribedLabel}>{t('You are subscribed')}</span>
                  </Show>
                </Show>
              </button>
            </Show>
          </ShowOnlyOnClient>
        </div>
      </div>
    </div>
  )
}