refactor: Add const for 1 btc in sats

Author: ovitrif

app/src/main/java/to/bitkit/models/Currency.kt

@@ -8,6 +8,7 @@ import java.text.DecimalFormatSymbols
 import java.util.Locale
 
 const val BITCOIN_SYMBOL = "₿"
+const val SATS_IN_BTC = 100_000_000
 
 @Serializable
 data class FxRateResponse(
@@ -51,7 +52,7 @@ data class ConvertedAmount(
     val flag: String,
     val sats: Long,
 ) {
-    val btcValue: BigDecimal = BigDecimal(sats).divide(BigDecimal(100_000_000))
+    val btcValue: BigDecimal = BigDecimal(sats).divide(BigDecimal(SATS_IN_BTC))
 
     data class BitcoinDisplayComponents(
         val symbol: String,

app/src/main/java/to/bitkit/services/CurrencyService.kt

@@ -5,6 +5,7 @@ import to.bitkit.async.ServiceQueue
 import to.bitkit.data.BlocktankHttpClient
 import to.bitkit.models.ConvertedAmount
 import to.bitkit.models.FxRate
+import to.bitkit.models.SATS_IN_BTC
 import to.bitkit.ui.utils.formatCurrency
 import to.bitkit.utils.AppError
 import java.math.BigDecimal
@@ -53,7 +54,7 @@ class CurrencyService @Inject constructor(
     }
 
     fun convert(sats: Long, rate: FxRate): ConvertedAmount? {
-        val btcAmount = BigDecimal(sats).divide(BigDecimal(100_000_000))
+        val btcAmount = BigDecimal(sats).divide(BigDecimal(SATS_IN_BTC))
         val value: BigDecimal = btcAmount.multiply(BigDecimal.valueOf(rate.rate))
 
         val formatted = value.formatCurrency() ?: return null
@@ -70,7 +71,7 @@ class CurrencyService @Inject constructor(
 
     fun convertFiatToSats(fiatValue: BigDecimal, rate: FxRate): ULong {
         val btcAmount = fiatValue.divide(BigDecimal.valueOf(rate.rate), 8, RoundingMode.HALF_UP)
-        val satsDecimal = btcAmount.multiply(BigDecimal(100_000_000))
+        val satsDecimal = btcAmount.multiply(BigDecimal(SATS_IN_BTC))
 
         val roundedNumber = satsDecimal.setScale(0, RoundingMode.HALF_UP)
 
@@ -82,7 +83,7 @@ class CurrencyService @Inject constructor(
 
         // Convert the fiat amount to BTC, then to sats
         val btc = fiatAmount / rate.rate
-        val sats = (btc * 100_000_000).roundToLong()
+        val sats = (btc * SATS_IN_BTC).roundToLong()
 
         return sats
     }

app/src/main/java/to/bitkit/ui/components/NumberPadTextField.kt

@@ -24,6 +24,7 @@ import to.bitkit.ext.removeSpaces
 import to.bitkit.models.BITCOIN_SYMBOL
 import to.bitkit.models.BitcoinDisplayUnit
 import to.bitkit.models.PrimaryDisplay
+import to.bitkit.models.SATS_IN_BTC
 import to.bitkit.models.formatToModernDisplay
 import to.bitkit.ui.currencyViewModel
 import to.bitkit.ui.theme.AppThemeSurface
@@ -168,7 +169,7 @@ fun AmountInputHandler(
     LaunchedEffect(input) {
         val sats = when (primaryDisplay) {
             PrimaryDisplay.BITCOIN -> {
-                if (displayUnit == BitcoinDisplayUnit.MODERN) input else (input.toLongOrDefault(0L) * 100_000_000).toString()
+                if (displayUnit == BitcoinDisplayUnit.MODERN) input else (input.toLongOrDefault(0L) * SATS_IN_BTC).toString()
             }
 
             PrimaryDisplay.FIAT -> {

app/src/main/java/to/bitkit/utils/Bip21Utils.kt

@@ -1,5 +1,7 @@
 package to.bitkit.utils
 
+import to.bitkit.models.SATS_IN_BTC
+
 object Bip21Utils {
 
     fun buildBip21Url(
@@ -37,8 +39,8 @@ object Bip21Utils {
     }
 
     private fun formatBtcAmount(sats: ULong): String {
-        val fullBtc = sats / 100_000_000uL
-        val remainderSats = sats % 100_000_000uL
+        val fullBtc = sats / SATS_IN_BTC.toULong()
+        val remainderSats = sats % SATS_IN_BTC.toULong()
 
         return if (remainderSats == 0uL) {
             fullBtc.toString()