1import * as _ from 'lodash-es'
2import { formatUnits } from 'ethers'
3import { throPtErr } from '../../sharedF/throwErrorF/sharedErrF.mts'
4
5export const gweiRange = 50_000
6export const gweiStep = 1000
7
8export const roundedGwei = ({value}: {value: bigint | string}): number => {
9  const gweiF = _.toNumber(formatUnits(value, 'gwei'))
10  return _.round(gweiF)
11}
12
13export const findFreeGwei = ({tgtGwei, pendingGweis}: {tgtGwei: number, pendingGweis: number[]}): number => {
14  for (let offset = 0; offset < gweiRange; offset += gweiStep) {
15    const offsetDown = tgtGwei - offset
16    if (!_.includes(pendingGweis, offsetDown)) {
17      return offsetDown
18    }
19
20    const offsetUp = tgtGwei + offset
21    if (!_.includes(pendingGweis, offsetUp)) {
22      return offsetUp
23    }
24  }
25  throw throPtErr('couldnt find free gwei', {tgtGwei, pendingGweis})
26}
27
28export const ethToGwei = (ethAmt: number): number => _.round(ethAmt * 1e9)
29
30export const usdToTargetGwei = ({totalUsd, ethPrice}: {totalUsd: number, ethPrice: number}): number => {
31  return _.round(totalUsd / ethPrice * 1000 * 1000 * 1000 / gweiStep) * gweiStep
32}
33