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import UserItem from '@/components/UserItem'
import { SEARCHABLE_RELAY_URLS } from '@/constants'
import { useFetchRelayInfos, useSearchParams } from '@/hooks'
import SecondaryPageLayout from '@/layouts/SecondaryPageLayout'
import { useFeed } from '@/providers/FeedProvider'
import client from '@/services/client.service'
import dayjs from 'dayjs'
import { Filter } from 'nostr-tools'
import { forwardRef, useEffect, useMemo, useRef, useState } from 'react'
import { useTranslation } from 'react-i18next'
const LIMIT = 50
const ProfileListPage = forwardRef(({ index }: { index?: number }, ref) => {
const { t } = useTranslation()
const { searchParams } = useSearchParams()
const { relayUrls } = useFeed()
const { searchableRelayUrls } = useFetchRelayInfos(relayUrls)
const [until, setUntil] = useState<number>(() => dayjs().unix())
const [hasMore, setHasMore] = useState<boolean>(true)
const [pubkeySet, setPubkeySet] = useState(new Set<string>())
const bottomRef = useRef<HTMLDivElement>(null)
const filter = useMemo(() => {
const f: Filter = { until }
const search = searchParams.get('s')
if (search) {
f.search = search
}
return f
}, [searchParams, until])
const urls = useMemo(() => {
return filter.search ? searchableRelayUrls.concat(SEARCHABLE_RELAY_URLS).slice(0, 4) : relayUrls
}, [relayUrls, searchableRelayUrls, filter])
const title = useMemo(() => {
return filter.search ? `${t('Search')}: ${filter.search}` : t('All users')
}, [filter])
useEffect(() => {
if (!hasMore) return
const options = {
root: null,
rootMargin: '10px',
threshold: 1
}
const observerInstance = new IntersectionObserver((entries) => {
if (entries[0].isIntersecting && hasMore) {
loadMore()
}
}, options)
const currentBottomRef = bottomRef.current
if (currentBottomRef) {
observerInstance.observe(currentBottomRef)
}
return () => {
if (observerInstance && currentBottomRef) {
observerInstance.unobserve(currentBottomRef)
}
}
}, [hasMore, filter, urls])
async function loadMore() {
if (urls.length === 0) {
return setHasMore(false)
}
const profiles = await client.fetchProfiles(urls, { ...filter, limit: LIMIT })
const newPubkeySet = new Set<string>()
profiles.forEach((profile) => {
if (!pubkeySet.has(profile.pubkey)) {
newPubkeySet.add(profile.pubkey)
}
})
setPubkeySet((prev) => new Set([...prev, ...newPubkeySet]))
setHasMore(profiles.length >= LIMIT)
const lastProfileCreatedAt = profiles[profiles.length - 1].created_at
setUntil(lastProfileCreatedAt ? lastProfileCreatedAt - 1 : 0)
}
return (
<SecondaryPageLayout ref={ref} index={index} title={title} displayScrollToTopButton>
<div className="space-y-2 px-4">
{Array.from(pubkeySet).map((pubkey, index) => (
<UserItem key={`${index}-${pubkey}`} pubkey={pubkey} />
))}
{hasMore && <div ref={bottomRef} />}
</div>
</SecondaryPageLayout>
)
})
ProfileListPage.displayName = 'ProfileListPage'
export default ProfileListPage