owners.js

import axios from "axios"
import _ from "lodash"
import * as cheerio from "cheerio"

export default async function handler(req, res) {
    const {address, start, end} = req.query

    const tokenIds = _.range(start, end)
    const urls = tokenIds.map((tokenId) => polygonScanUrlGenerator(address, tokenId))


    const responses = await Promise.all(urls.map((url) => axios.get(url)))
    const htmls = responses.map((response) => response.data)
    const owners = htmls.map((html) => {
        const $ = cheerio.load(html)
        return $(`#resulttable .table tbody tr td:nth-child(2) a`).text()
    })

    const uniqueOwners = _.uniq(owners)

    let failures = 0


    const unMoonedWallets = await Promise.all(uniqueOwners.map(async (wallet, i) => {
        await sleep(100, i)
        const url = `https://nova-explorer.arbitrum.io/api?module=account&action=tokentx&address=${wallet}`
        const response = await axios.get(url).catch((e) => {
                failures++
                console.log(e)
            }
        )
        return response?.data.message === "No token transfers found" ? wallet : null
    })).then((e) => e.filter(e => e))


    res.json({uniqueOwners, unMoonedWallets, failures})


}

const polygonScanUrlGenerator = (address, tokenId) => {
    return `https://polygonscan.com/token/generic-tokenholder-inventory?m=normal&contractAddress=${address}&a=${tokenId}&pUrl=token`
}


const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms))