stacker.news/components/me.js

27 lines
890 B
JavaScript

import React, { useContext } from 'react'
import { useQuery } from '@apollo/client'
import { ME } from '@/fragments/users'
import { FAST_POLL_INTERVAL, SSR } from '@/lib/constants'
export const MeContext = React.createContext({
me: null
})
export function MeProvider ({ me, children }) {
const { data, refetch } = useQuery(ME, SSR ? {} : { pollInterval: FAST_POLL_INTERVAL, nextFetchPolicy: 'cache-and-network' })
// this makes sure that we always use the fetched data if it's null.
// without this, we would always fallback to the `me` object
// which was passed during page load which (visually) breaks switching to anon
const futureMe = data?.me ?? (data?.me === null ? null : me)
return (
<MeContext.Provider value={{ me: futureMe, refreshMe: refetch }}>
{children}
</MeContext.Provider>
)
}
export function useMe () {
return useContext(MeContext)
}