uniswap-interface/src/hooks/usePositionTokenURI.ts at main · codeaudit/uniswap-interface · GitHub

History

79 lines (72 loc) · 1.79 KB

Raw

import { BigNumber } from 'ethers'

import JSBI from 'jsbi'

import { useMemo } from 'react'

import { NEVER_RELOAD, useSingleCallResult } from '../state/multicall/hooks'

import { useV3NFTPositionManagerContract } from './useContract'

type TokenId = number | JSBI | BigNumber

const STARTS_WITH = 'data:application/json;base64,'

type UsePositionTokenURIResult =

| {

valid: true

loading: false

result: {

name: string

description: string

image: string

}

| {

valid: false

loading: false

}

| {

valid: true

loading: true

}

export function usePositionTokenURI(tokenId: TokenId | undefined): UsePositionTokenURIResult {

const contract = useV3NFTPositionManagerContract()

const inputs = useMemo(

() => [tokenId instanceof BigNumber ? tokenId.toHexString() : tokenId?.toString(16)],

[tokenId]

)

const { result, error, loading, valid } = useSingleCallResult(contract, 'tokenURI', inputs, {

...NEVER_RELOAD,

gasRequired: 3_000_000,

})

return useMemo(() => {

if (error || !valid || !tokenId) {

return {

valid: false,

loading: false,

}

if (loading) {

return {

valid: true,

loading: true,

}

if (!result) {

return {

valid: false,

loading: false,

}

const [tokenURI] = result as [string]

if (!tokenURI || !tokenURI.startsWith(STARTS_WITH))

return {

valid: false,

loading: false,

}

try {

const json = JSON.parse(atob(tokenURI.slice(STARTS_WITH.length)))

return {

valid: true,

loading: false,

result: json,

}

} catch (error) {

return { valid: false, loading: false }

}

}, [error, loading, result, tokenId, valid])

}

uniswap-interface/src/hooks/usePositionTokenURI.ts at main · codeaudit/uniswap-interface · GitHub

Expand file tree

Breadcrumbs

usePositionTokenURI.ts

Latest commit

History

Breadcrumbs

usePositionTokenURI.ts

File metadata and controls