Updated on 2026-08-14

common/ui/src/main/java/com/tangem/common/ui/feeScreen/FeeCalculation.kt

@@ -1,86 +0,0 @@
-package com.tangem.common.ui.feeScreen
-
-import com.tangem.blockchain.common.transaction.TransactionFee
-import com.tangem.common.extensions.isZero
-import com.tangem.core.ui.utils.parseBigDecimal
-import com.tangem.domain.tokens.model.CryptoCurrencyStatus
-import java.math.BigDecimal
-import java.math.RoundingMode
-
-/**
- * Check and calculates subtracted amount
- */
-fun checkAndCalculateSubtractedAmount(
-    isAmountSubtractAvailable: Boolean,
-    cryptoCurrencyStatus: CryptoCurrencyStatus,
-    amountValue: BigDecimal,
-    feeValue: BigDecimal,
-    reduceAmountBy: BigDecimal,
-): BigDecimal {
-    val balance = cryptoCurrencyStatus.value.amount ?: return amountValue
-    val isFeeCoverage = checkFeeCoverage(
-        isSubtractAvailable = isAmountSubtractAvailable,
-        balance = balance,
-        amountValue = amountValue,
-        feeValue = feeValue,
-        reduceAmountBy = reduceAmountBy,
-    )
-    return if (isFeeCoverage) {
-        balance.minus(reduceAmountBy).minus(feeValue)
-    } else {
-        amountValue
-    }
-}
-
-/**
- * Checks if sending amount with fee is greater than balance
- */
-fun checkFeeCoverage(
-    isSubtractAvailable: Boolean,
-    balance: BigDecimal,
-    amountValue: BigDecimal,
-    feeValue: BigDecimal,
-    reduceAmountBy: BigDecimal?,
-): Boolean {
-    if (!isSubtractAvailable) return false
-    val reducedBy = balance - (reduceAmountBy ?: BigDecimal.ZERO)
-    return reducedBy < amountValue + feeValue && reducedBy > feeValue && reducedBy >= amountValue
-}
-
-/**
- * Check if custom fee is too low
- */
-fun checkIfFeeTooLow(fee: TransactionFee, customValue: BigDecimal, isCustomSelected: Boolean): Boolean {
-    val multipleFees = fee as? TransactionFee.Choosable ?: return false
-    val minimumValue = multipleFees.minimum.amount.value ?: return false
-
-    return isCustomSelected && minimumValue > customValue
-}
-
-/**
- * Check if custom fee is too high
- */
-fun checkIfFeeTooHigh(
-    fee: TransactionFee,
-    customValue: BigDecimal,
-    isCustomSelected: Boolean,
-    onShow: (String) -> Unit,
-): Boolean {
-    val multipleFees = fee as? TransactionFee.Choosable ?: return false
-    val highValue = multipleFees.priority.amount.value ?: return false
-
-    val diff = customValue / highValue
-    val isShow = isCustomSelected && diff > FEE_MAX_DIFF
-    if (isShow) onShow(diff.parseBigDecimal(ZERO_DECIMALS, RoundingMode.HALF_UP))
-    return isShow
-}
-
-/**
- * Checks if fee exceeds fee paid currency balance
- */
-fun checkExceedBalance(feeBalance: BigDecimal?, feeAmount: BigDecimal?): Boolean {
-    return feeAmount == null || feeBalance == null || feeAmount.isZero() || feeAmount > feeBalance
-}
-
-private val FEE_MAX_DIFF = BigDecimal("5")
-private const val ZERO_DECIMALS = 0