get executive rebalance params

getParams.ts

import {ethers} from 'ethers';

const x60 = ethers.BigNumber.from('2').pow(ethers.BigNumber.from('60'));
const ALCHEMY_ID = 'YOUR_ALCHEMY_ID';

const op = async () => {
  const guniPoolAddress = "0x288a17459b5d0ecc401f5ECdC166F447ea3Da13a";
  const libAddress = "0xc2D8196DbcC92E8C5F372e58B8dbFDF2ac129057";
  const provider = new ethers.providers.JsonRpcProvider(`https://eth-mainnet.alchemyapi.io/v2/${ALCHEMY_ID}`)
  const gelatoUniV3Pool = new ethers.Contract(
    guniPoolAddress,
    [
        'function getUnderlyingBalances() external view returns (uint256 amount0Current, uint256 amount1Current)',
        'function pool() external view returns (address)'
    ],
    provider
  );
  const pool = new ethers.Contract(
    await gelatoUniV3Pool.pool(),
    ["function slot0() external view returns (uint160 sqrtPriceX96, int24 tick, uint16 observationIndex, uint16 observationCardinality, uint16 observationCardinalityNext, uint8 feeProtocol, bool unlocked)"],
    provider
  );
  const liquidityLib = new ethers.Contract(
    libAddress,
    [
      'function getAmountsForLiquidity(uint160, uint160, uint160, uint128) external view returns (uint256 amount0, uint256 amount1)',
      'function getLiquidityForAmounts(uint160, uint160, uint160, uint256, uint256) external view returns (uint128)'
    ],
    provider
  );
  const { sqrtPriceX96 } = await pool.slot0();

  const {amount0Current, amount1Current} = await gelatoUniV3Pool.getUnderlyingBalances();

  // IF YOU ARE REBALANCING PUT YOUR DESIRED NEW TICKS HERE
  const lowerTick = -36000; // new lower tick
  const upperTick = 0; // new upper tick

  const lowerPrice = 1.0001 ** Number(lowerTick);
  const upperPrice = 1.0001 ** Number(upperTick);

  const lowerSqrtPriceX36 = Math.round(Math.sqrt(lowerPrice) * (2**36));
  const upperSqrtPriceX36 = Math.round(Math.sqrt(upperPrice) * (2**36));
  const lowerSqrtPriceX96 = ethers.BigNumber.from(lowerSqrtPriceX36.toString()).mul(x60);
  const upperSqrtPriceX96 = ethers.BigNumber.from(upperSqrtPriceX36.toString()).mul(x60);

  const liquidity = await liquidityLib.getLiquidityForAmounts(
    sqrtPriceX96,
    lowerSqrtPriceX96,
    upperSqrtPriceX96,
    amount0Current,
    amount1Current
  );

  const {amount0, amount1} = await liquidityLib.getAmountsForLiquidity(
    sqrtPriceX96,
    lowerSqrtPriceX96,
    upperSqrtPriceX96,
    liquidity
  );

  const leftover0 = amount0Current.sub(amount0);
  const leftover1 = amount1Current.sub(amount1);

  console.log("holdings token0", ethers.utils.formatEther(amount0Current));
  console.log("holdings token1", ethers.utils.formatEther(amount1Current));
  console.log("maximum deposit new position token0", ethers.utils.formatEther(amount0));
  console.log("maximum deposit new position token1", ethers.utils.formatEther(amount1));
  console.log("leftover token0", ethers.utils.formatEther(leftover0));
  console.log("leftover token1", ethers.utils.formatEther(leftover1));
};

(async () => {
  await op();
})();