Function adjustPercentageAmounts

model/transaction.go:234–256

adjustPercentageAmounts adjusts percentage amounts to maintain the correct total

(state *distributionState)

// adjustPercentageAmounts adjusts percentage amounts to maintain the correct total
func adjustPercentageAmounts(state *distributionState) {
	if len(state.percentAmounts) == 0 {
		return
	}

	hundredDec := decimal.NewFromInt(100)
	targetTotal := state.totalAmountDec.Mul(state.totalPercentage).Div(hundredDec)

	currentTotal := decimal.Zero
	for _, amount := range state.percentAmounts {
		currentTotal = currentTotal.Add(amount)
	}

	diff := targetTotal.Sub(currentTotal)
	if diff.Abs().Cmp(decimal.NewFromInt(0)) <= 0 {
		return
	}

	largestKey, largestAmount := findLargestDecimal(state.percentAmounts)
	if largestKey != "" && largestAmount.Sign() > 0 {
		state.percentAmounts[largestKey] = state.percentAmounts[largestKey].Add(diff)
	}
}

// findLargestDecimal finds the key with the largest decimal value
func findLargestDecimal(amounts map[string]decimal.Decimal) (string, decimal.Decimal) {