webapp/src/components/Article/CommentsTree.tsx

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import { For, Show } from 'solid-js/web'
import { useSession } from '../../context/session'
import Comment from './Comment'
import { t } from '../../utils/intl'
import { showModal } from '../../stores/ui'
import styles from '../../styles/Article.module.scss'
import { useReactionsStore } from '../../stores/zine/reactions'
import { createMemo, createSignal, onMount } from 'solid-js'
import type { Reaction } from '../../graphql/types.gen'
import { clsx } from 'clsx'
import { byCreated, byStat } from '../../utils/sortby'
import { Loading } from '../Loading'
const ARTICLE_COMMENTS_PAGE_SIZE = 50
const MAX_COMMENT_LEVEL = 6
export const CommentsTree = (props: { shout: string; reactions?: Reaction[] }) => {
const [getCommentsPage, setCommentsPage] = createSignal(0)
const [commentsOrder, setCommentsOrder] = createSignal<'rating' | 'createdAt'>('createdAt')
const [isCommentsLoading, setIsCommentsLoading] = createSignal(false)
const [isLoadMoreButtonVisible, setIsLoadMoreButtonVisible] = createSignal(false)
const { session } = useSession()
const { sortedReactions, loadReactionsBy } = useReactionsStore({ reactions: props.reactions })
const reactions = createMemo<Reaction[]>(() =>
sortedReactions()
.sort(commentsOrder() === 'rating' ? byStat('rating') : byCreated)
.filter((r) => r.shout.slug === props.shout)
)
const loadMore = async () => {
try {
const page = getCommentsPage()
setIsCommentsLoading(true)
const { hasMore } = await loadReactionsBy({
by: { shout: props.shout, comment: true },
limit: ARTICLE_COMMENTS_PAGE_SIZE,
offset: page * ARTICLE_COMMENTS_PAGE_SIZE
})
setIsLoadMoreButtonVisible(hasMore)
} finally {
setIsCommentsLoading(false)
}
}
const getCommentById = (cid) => reactions().find((r) => r.id === cid)
const getCommentLevel = (c: Reaction, level = 0) => {
if (c && c.replyTo && level < MAX_COMMENT_LEVEL) {
return getCommentLevel(getCommentById(c.replyTo), level + 1)
}
return level
}
onMount(async () => await loadMore())
return (
<>
<Show when={!isCommentsLoading()} fallback={<Loading />}>
<div class={styles.commentsHeaderWrapper}>
<h2 id="comments" class={styles.commentsHeader}>
{t('Comments')} {reactions().length.toString() || ''}
</h2>
<ul class={clsx(styles.commentsViewSwitcher, 'view-switcher')}>
<li classList={{ selected: commentsOrder() === 'createdAt' || !commentsOrder() }}>
<a
href="#"
onClick={(ev) => {
ev.preventDefault()
setCommentsOrder('createdAt')
}}
>
По порядку
</a>
</li>
<li classList={{ selected: commentsOrder() === 'rating' }}>
<a
href="#"
onClick={(ev) => {
ev.preventDefault()
setCommentsOrder('rating')
}}
>
По рейтингу
</a>
</li>
</ul>
</div>
<For each={reactions()}>
{(reaction: Reaction) => (
<Comment
comment={reaction}
level={getCommentLevel(reaction)}
canEdit={reaction.createdBy?.slug === session()?.user?.slug}
/>
)}
</For>
<Show when={isLoadMoreButtonVisible()}>
<button onClick={loadMore}>Load more</button>
</Show>
</Show>
<Show
when={!session()?.user?.slug}
fallback={
<form class={styles.commentForm}>
<div class="pretty-form__item">
<input type="text" id="new-comment" placeholder={t('Write comment')} />
<label for="new-comment">{t('Write comment')}</label>
</div>
</form>
}
>
<div class={styles.commentWarning} id="comments">
{t('To leave a comment you please')}
<a
href={''}
onClick={(evt) => {
evt.preventDefault()
showModal('auth')
}}
>
<i>{t('sign up or sign in')}</i>
</a>
</div>
</Show>
</>
)
}