etherscan.ts

const endpoints: { [k: number]: string } = {
  1: 'https://api.etherscan.io/api',
  3: 'https://api-ropsten.etherscan.io/api',
  4: 'https://api-rinkeby.etherscan.io/api',
  5: 'https://api-goerli.etherscan.io/api',
  8453: 'https://api.basescan.org/api',
  84531: 'https://api-goerli.basescan.org/api',
  84532: 'https://api-sepolia.basescan.org/api',
}

export interface Transfer {
  timeStamp: string
  uniqueId: string
  hash: string
  from: string
  to: string
  interpretation?: any
}

export async function getTransactions(chainId: number, address: string) {
  const url = endpoints[chainId]

  const data = new URLSearchParams({
    module: 'account',
    action: 'txlist',
    address,
    sort: 'desc',
    offset: '5',
    page: '1',
    apikey: process.env.ETHERSCAN_API_KEY || '',
  })

  const resp = await fetch(`${url}?${data.toString()}`, {
    next: { revalidate: 60 * 5 },
  })

  if (!resp.ok) {
    throw new Error(resp.statusText)
  }

  const json = (await resp.json()).result as Transfer[]
  return json
}