manifold/web/components/notifications-icon.tsx
2022-09-02 12:52:27 -07:00

44 lines
1.5 KiB
TypeScript

import { BellIcon } from '@heroicons/react/outline'
import clsx from 'clsx'
import { Row } from 'web/components/layout/row'
import { useEffect, useState } from 'react'
import { usePrivateUser } from 'web/hooks/use-user'
import { useRouter } from 'next/router'
import { useUnseenGroupedNotification } from 'web/hooks/use-notifications'
import { NOTIFICATIONS_PER_PAGE } from 'web/pages/notifications'
import { PrivateUser } from 'common/user'
export default function NotificationsIcon(props: { className?: string }) {
const privateUser = usePrivateUser()
return (
<Row className="relative justify-center">
{privateUser && <UnseenNotificationsBubble privateUser={privateUser} />}
<BellIcon className={clsx(props.className)} />
</Row>
)
}
function UnseenNotificationsBubble(props: { privateUser: PrivateUser }) {
const router = useRouter()
const { privateUser } = props
const [seen, setSeen] = useState(false)
useEffect(() => {
if (router.pathname.endsWith('notifications')) return setSeen(true)
else setSeen(false)
}, [router.pathname])
const notifications = useUnseenGroupedNotification(privateUser)
if (!notifications || notifications.length === 0 || seen) {
return null
}
return (
<div className="-mt-0.75 absolute ml-3.5 min-w-[15px] rounded-full bg-indigo-500 p-[2px] text-center text-[10px] leading-3 text-white lg:left-0 lg:-mt-1 lg:ml-2">
{notifications.length > NOTIFICATIONS_PER_PAGE
? `${NOTIFICATIONS_PER_PAGE}+`
: notifications.length}
</div>
)
}