From fa72dd4ce107190cda7bc56234fed650f20e3aa9 Mon Sep 17 00:00:00 2001
From: Linnea Gräf <nea@nea.moe>
Date: Sun, 8 Dec 2024 00:42:01 +0100
Subject: feat: Add visitor trading detection

---
 src/main/kotlin/moe/nea/ledger/ItemChange.kt | 33 ++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 src/main/kotlin/moe/nea/ledger/ItemChange.kt

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

diff --git a/src/main/kotlin/moe/nea/ledger/ItemChange.kt b/src/main/kotlin/moe/nea/ledger/ItemChange.kt
new file mode 100644
index 0000000..a8bb7e8
--- /dev/null
+++ b/src/main/kotlin/moe/nea/ledger/ItemChange.kt
@@ -0,0 +1,33 @@
+package moe.nea.ledger
+
+data class ItemChange(
+	val itemId: ItemId,
+	val count: Double,
+	val direction: ChangeDirection,
+) {
+	enum class ChangeDirection {
+		GAINED,
+		TRANSFORM,
+		SYNC,
+		CATALYST,
+		LOST;
+	}
+
+	companion object {
+		fun gainCoins(number: Double): ItemChange {
+			return gain(ItemId.COINS, number)
+		}
+
+		fun gain(itemId: ItemId, amount: Number): ItemChange {
+			return ItemChange(itemId, amount.toDouble(), ChangeDirection.GAINED)
+		}
+
+		fun lose(itemId: ItemId, amount: Number): ItemChange {
+			return ItemChange(itemId, amount.toDouble(), ChangeDirection.LOST)
+		}
+
+		fun loseCoins(number: Double): ItemChange {
+			return lose(ItemId.COINS, number)
+		}
+	}
+}
\ No newline at end of file
-- 
cgit