chore: properly balance cap relative to rate only during buy with reserves

Signed-off-by: Brandon McAnsh <git@bmcreations.dev>

Author: bmc08gt

apps/flipcash/shared/tokens/src/main/kotlin/com/flipcash/app/tokens/ui/BuySellSwapTokenViewModel.kt

@@ -134,7 +134,7 @@ class BuySellSwapTokenViewModel @Inject constructor(
         val netTransferAmount: Fiat
             get() = when (purpose) {
                is TokenSwapPurpose.BalanceIncrease -> enteredAmount
-               else -> enteredAmount - feeAmount
+               else -> Fiat(fiat = enteredAmount.decimalValue - feeAmount.decimalValue, currencyCode = enteredAmount.currencyCode)
             }
 
         val transactionLimit: Fiat
@@ -473,7 +473,7 @@ class BuySellSwapTokenViewModel @Inject constructor(
                         val amountFiat = LocalFiat.valueExchangeIn(
                             amount = Fiat(data.amountData.amount, rate.currency),
                             token = Token.usdf,
-                            balance = stateFlow.value.reservesBalance,
+                            balance = stateFlow.value.reservesBalance.convertingToUsdIfNeeded(rate),
                             rate = rate
                         )
 

services/opencode/src/main/kotlin/com/getcode/opencode/model/financial/LocalFiat.kt

@@ -114,11 +114,10 @@ data class LocalFiat(
             debug: Boolean = BuildConfig.DEBUG,
             trace: Boolean = true,
         ): LocalFiat {
-            val usdBalance = balance?.convertingToUsdIfNeeded(rate)
             val usdValue = amount.convertingToUsdIfNeeded(rate)
             // cap the entered amount as well, since our display rounds HALF_UP
             // e,g entered 0.02 USD, but balance is 0.016 USD
-            val cappedValue = usdBalance?.let { min(it, usdValue) } ?: usdValue
+            val cappedValue = balance?.let { min(it, usdValue) } ?: usdValue
 
             if (token.address == Mint.usdf) {
                 // this doesn't need a calculated value exchange since we are USDC
@@ -155,7 +154,7 @@ data class LocalFiat(
                 rate = rate,
                 amount = amount,
                 usdValue = usdValue,
-                balance = usdBalance,
+                balance = balance,
                 cappedValue = cappedValue,
                 token = token,
                 supply = supply,