All files / app/pages/stacking/utils calc-stacking-buffer.ts

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import { stxToMicroStx } from '@utils/unit-convert';
import { BigNumber } from 'bignumber.js';
 
const BigNumberFloorRound = BigNumber.clone({ ROUNDING_MODE: BigNumber.ROUND_FLOOR });
 
export function calculateRewardSlots(ustxAmount: BigNumber, minRequireToStack: BigNumber) {
  return new BigNumberFloorRound(ustxAmount).dividedBy(minRequireToStack).integerValue();
}
 
export function calculateStackingBuffer(ustxAmount: BigNumber, minRequireToStack: BigNumber) {
  const numberOfRewardSlots = calculateRewardSlots(ustxAmount, minRequireToStack);
 
  const stxBuffer = numberOfRewardSlots
    .multipliedBy(minRequireToStack)
    .minus(ustxAmount)
    .absoluteValue();
 
  const stackingIncrements = stxToMicroStx(10_000);
 
  return new BigNumberFloorRound(stxBuffer)
    .dividedBy(stackingIncrements)
    .integerValue()
    .multipliedBy(stackingIncrements);
}