From 9666676766bf21364f4fc4d0d1d336e72f2a91b4 Mon Sep 17 00:00:00 2001
From: historia <[not public]>
Date: Tue, 6 Oct 2026 12:57:23 -0400
Subject: refactor: split casino.go, dedup helpers, remove audit docs

---
 internal/game/money.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'internal/game/money.go')

diff --git a/internal/game/money.go b/internal/game/money.go
index 6317df8..6965859 100644
--- a/internal/game/money.go
+++ b/internal/game/money.go
@@ -48,6 +48,20 @@ func removePendingWager(p *player.Player, id string) bool {
 	return removed
 }
 
+// countUniqueNonEmpty returns the number of distinct non-empty IDs in ids.
+// PayCredits/PayPoker use it to fail closed when a payout names a stake that
+// is not present (or names one twice): paying it anyway would double-pay with
+// no ledger entry left for startup recovery.
+func countUniqueNonEmpty(ids []string) int {
+	seen := make(map[string]bool, len(ids))
+	for _, id := range ids {
+		if id != "" {
+			seen[id] = true
+		}
+	}
+	return len(seen)
+}
+
 // takePendingWagers removes and returns the pending stakes whose IDs are
 // listed, leaving the rest. It is used by a settlement that returns a
 // specific set of stakes (a table hand).
-- 
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