1 files changed, 11 insertions, 3 deletions
diff --git a/src/main/kotlin/moe/nea/firmament/util/FirmFormatters.kt b/src/main/kotlin/moe/nea/firmament/util/FirmFormatters.kt
index b2c1f35..96a4389 100644
--- a/src/main/kotlin/moe/nea/firmament/util/FirmFormatters.kt
+++ b/src/main/kotlin/moe/nea/firmament/util/FirmFormatters.kt
@@ -11,13 +11,21 @@ import kotlin.math.absoluteValue
 import kotlin.time.Duration
 
 object FirmFormatters {
-    fun toString(float: Float, fractionalDigits: Int): String = toString(float.toDouble(), fractionalDigits)
-    fun toString(double: Double, fractionalDigits: Int): String {
+    fun formatCurrency(long: Long, segments: Int = 3): String {
+        val α = long / 1000
+        if (α != 0L) {
+            return formatCurrency(α, segments) + "," + (long - α * 1000).toString().padStart(3, '0')
+        }
+        return long.toString()
+    }
+
+    fun formatCurrency(float: Float, fractionalDigits: Int): String = formatCurrency(float.toDouble(), fractionalDigits)
+    fun formatCurrency(double: Double, fractionalDigits: Int): String {
         val long = double.toLong()
         val δ = (double - long).absoluteValue
         val μ = pow(10, fractionalDigits)
         val digits = (μ * δ).toInt().toString().padStart(fractionalDigits, '0').trimEnd('0')
-        return long.toString() + (if (digits.isEmpty()) "" else ".$digits")
+        return formatCurrency(long) + (if (digits.isEmpty()) "" else ".$digits")
     }
 
     fun formatTimespan(duration: Duration): String {