From c82d0b07033e02f7a6a23adbc1607ab3d41afdad Mon Sep 17 00:00:00 2001
From: Linnea Gräf <nea@nea.moe>
Date: Sat, 28 Dec 2024 15:52:17 +0100
Subject: feat: Add draonic sacrifice tracker

---
 src/main/kotlin/moe/nea/ledger/DebouncedValue.kt | 38 ++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/main/kotlin/moe/nea/ledger/DebouncedValue.kt

(limited to 'src/main/kotlin/moe/nea/ledger/DebouncedValue.kt')

diff --git a/src/main/kotlin/moe/nea/ledger/DebouncedValue.kt b/src/main/kotlin/moe/nea/ledger/DebouncedValue.kt
new file mode 100644
index 0000000..66fba8d
--- /dev/null
+++ b/src/main/kotlin/moe/nea/ledger/DebouncedValue.kt
@@ -0,0 +1,38 @@
+package moe.nea.ledger
+
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.nanoseconds
+import kotlin.time.Duration.Companion.seconds
+
+class DebouncedValue<T>(private val value: T) {
+	companion object {
+		fun <T> farFuture(): DebouncedValue<T> {
+			val value = DebouncedValue(Unit)
+			value.take()
+			@Suppress("UNCHECKED_CAST")
+			return value as DebouncedValue<T>
+		}
+	}
+
+	val lastSeenAt = System.nanoTime()
+	val age get() = (System.nanoTime() - lastSeenAt).nanoseconds
+	var taken = false
+		private set
+
+	fun get(debounce: Duration): T? {
+		return if (!taken && age >= debounce) value
+		else null
+	}
+
+	fun replace(): T? {
+		return consume(0.seconds)
+	}
+
+	fun consume(debounce: Duration): T? {
+		return get(debounce)?.also { take() }
+	}
+
+	fun take() {
+		taken = true
+	}
+}
\ No newline at end of file
-- 
cgit