camelot.js

const { ethers } = require('ethers');
const { formatUnits } = require('ethers/lib/utils');
const CamelotNitroPool = require('./abis/CamelotNitroPool.json');
const CamelotPool = require('./abis/CamelotPool.json');
const ERC20 = require('./abis/ERC20.json');

const getContract = (address, abi) => {
  const jsonRpcProvider = new ethers.getDefaultProvider('https://arb1.arbitrum.io/rpc')
  return new ethers.Contract(address, abi, jsonRpcProvider)
}

const fromBigNumber = (number, decimals = 18) => {
  return parseFloat(formatUnits(number.toString(), decimals))
}

const fetchUserPoolDetails = async (poolAddress, nitroPoolAddress, userAddress) => {
  // Fetch both pools
  const camelotNitroPool = getContract(nitroPoolAddress, CamelotNitroPool.abi)
  // WE NEED TO USE THIS TO CALCULATE THE USER'S POOL PERCENTAGE
  const camelotPool = getContract(poolAddress, CamelotPool.abi)
  // Fetch collateral tokens for pools
  const collateral0 = await camelotPool.token0()
  const collateral1 = await camelotPool.token1()
  const collateral0Contract = getContract(collateral0, ERC20.abi)
  const collateral1Contract = getContract(collateral1, ERC20.abi)
  const response = await fetch('https://api.camelot.exchange/nitros')
  const res = await response.json()
  const tvlUSD = res.data.nitros[nitroPoolAddress] ?? 0

  const collateralTokens = [
    {
      symbol: await collateral0Contract.symbol(),
      userBalance: fromBigNumber(await collateral0Contract.balanceOf(userAddress)),
      nitroPoolBalance: fromBigNumber(await collateral0Contract.balanceOf(nitroPoolAddress)),
      poolBalance: fromBigNumber(await collateral0Contract.balanceOf(poolAddress)),
      address: collateral0,
    },
    {
      symbol: await collateral1Contract.symbol(),
      userBalance: fromBigNumber(await collateral1Contract.balanceOf(userAddress)),
      nitroPoolBalance: fromBigNumber(await collateral1Contract.balanceOf(nitroPoolAddress)),
      poolBalance: fromBigNumber(await collateral1Contract.balanceOf(poolAddress)),
      address: collateral1,
    }
  ]

  const userInfo = await camelotNitroPool.userInfo(userAddress)
  const userDepositAmount = fromBigNumber(userInfo.totalDepositAmount)
  const totalDepositAmount = fromBigNumber(await camelotNitroPool.totalDepositAmount())
  // What percentage of the pool does the user own?
  const userPoolPercentage = userDepositAmount / totalDepositAmount * 100
  const userDollarValue = (userPoolPercentage / 100) * tvlUSD;

  console.log(
    collateralTokens,
    userInfo,
    userDepositAmount,
    totalDepositAmount,
    userPoolPercentage,
    userDollarValue,
    tvlUSD,
    `User has ${userPoolPercentage}% of the pool, which is worth $${userDollarValue}`
  )

  return {
    collateralTokens,
    userInfo,
    userDepositAmount,
    totalDepositAmount,
    userPoolPercentage,
    userDollarValue,
  }
}

// poolAddress, nitroPoolAddress, userAddress
fetchUserPoolDetails('0x824959a55907d5350e73e151Ff48DabC5A37a657', '0x53F973256F410d1D8b10ce72D03D8dBBD3b1066E', '0xb919e09bb077013d5f93c898dafcc1d0c75559fe')