utils.js

/**
 * TAKEN FROM https://github.com/axelarnetwork/axelar-local-gmp-examples/blob/main/scripts/utils.js
 */

const {
  Contract,
  ContractFactory,
  constants: { AddressZero },
  utils: { keccak256, defaultAbiCoder },
} = require("ethers");
const axios = require("axios");
const axelarLocal = require("@axelar-network/axelar-local-dev");

const { AxelarAssetTransfer } = require("@axelar-network/axelarjs-sdk");

function getDepositAddress(
  env,
  source,
  destination,
  destinationAddress,
  symbol
) {
  if (env == "testnet") {
    const listing = {
      aUSDC: "uusdc",
    };
    const sdk = new AxelarAssetTransfer({
      environment: "testnet",
      auth: "local",
    });
    return sdk.getDepositAddress(
      source,
      destination,
      destinationAddress,
      listing[symbol]
    );
  } else {
    return axelarLocal.getDepositAddress(
      source,
      destination,
      destinationAddress,
      symbol,
      8500
    );
  }
}

async function getGasPrice(env, source, destination, tokenAddress) {
  if (env == "local") return 1;
  if (env != "testnet") throw Error('env needs to be "local" or "testnet".');
  const api_url = "https://devnet.api.gmp.axelarscan.io";

  const requester = axios.create({ baseURL: api_url });
  const params = {
    method: "getGasPrice",
    destinationChain: destination.name,
    sourceChain: source.name,
  };

  // set gas token address to params
  if (tokenAddress != AddressZero) {
    params.sourceTokenAddress = tokenAddress;
  } else {
    params.sourceTokenSymbol = source.tokenSymbol;
  }
  // send request
  const response = await requester.get("/", { params }).catch((error) => {
    return { data: { error } };
  });
  const result = response.data.result;
  const dest = result.destination_native_token;
  const destPrice = 1e18 * dest.gas_price * dest.token_price.usd;
  return destPrice / result.source_token.token_price.usd;
}
function sleep(ms) {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve();
    }, ms);
  });
}
module.exports = {
  getGasPrice,
  getDepositAddress,
  sleep,
};