33 lines
1.3 KiB
TypeScript
33 lines
1.3 KiB
TypeScript
import { useMemo } from 'react'
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import { safeNamehash } from 'utils/safeNamehash'
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import { useSingleCallResult } from '../state/multicall/hooks'
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import isZero from '../utils/isZero'
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import { useENSRegistrarContract, useENSResolverContract } from './useContract'
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import useDebounce from './useDebounce'
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/**
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* Does a lookup for an ENS name to find its address.
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*/
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export default function useENSAddress(ensName?: string | null): { loading: boolean; address: string | null } {
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const debouncedName = useDebounce(ensName, 200)
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const ensNodeArgument = useMemo(
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() => [debouncedName === null ? undefined : safeNamehash(debouncedName)],
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[debouncedName]
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)
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const registrarContract = useENSRegistrarContract(false)
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const resolverAddress = useSingleCallResult(registrarContract, 'resolver', ensNodeArgument)
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const resolverAddressResult = resolverAddress.result?.[0]
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const resolverContract = useENSResolverContract(
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resolverAddressResult && !isZero(resolverAddressResult) ? resolverAddressResult : undefined,
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false
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)
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const addr = useSingleCallResult(resolverContract, 'addr', ensNodeArgument)
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const changed = debouncedName !== ensName
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return {
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address: changed ? null : addr.result?.[0] ?? null,
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loading: changed || resolverAddress.loading || addr.loading,
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}
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}
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