feat: additional baca and bj rules variants

1 files changed, 14 insertions, 12 deletions

diff --git a/internal/casino/baccarat.go b/internal/casino/baccarat.go
index 53ed0a9..68f363e 100644
--- a/internal/casino/baccarat.go
+++ b/internal/casino/baccarat.go
@@ -19,10 +19,6 @@ const (
 	baccaratSpotTie    = "tie"
 )
 
-func baccaratSpotValid(spot string) bool {
-	return spot == baccaratSpotPlayer || spot == baccaratSpotBanker || spot == baccaratSpotTie
-}
-
 type baccaratPlayer struct {
 	Participant
 	lastBet  int
@@ -53,7 +49,7 @@ func newBaccaratTable(roomID int, cfg TableConfig, rng *rand.Rand) *baccaratTabl
 func (t *baccaratTable) menuEvent(name string) Event {
 	return t.betMenuEvent(name, []MenuCommand{
 		{Command: "bet <amount>", Desc: "Place a wager (min/max accepted)"},
-		{Command: "bet <amount> on player|banker|tie", Desc: "Wager on a specific outcome"},
+		{Command: "bet <amount> on " + t.Rules.betChoices(), Desc: "Wager on a specific outcome (one wager per round)"},
 		{Command: "stop", Desc: "Leave the table"},
 	})
 }
@@ -68,7 +64,7 @@ func (t *baccaratTable) join(name string) []Event {
 		return []Event{t.private(name, "That baccarat table is full.")}
 	}
 	events := []Event{t.addSeatLocked(name, &baccaratPlayer{Participant: Participant{Name: name, Connected: true}})}
-	events = append(events, t.menuEvent(name))
+	events = append(events, t.private(name, t.Config.BaccaratRulesText()), t.menuEvent(name))
 	return events
 }
 
@@ -100,10 +96,10 @@ func (t *baccaratTable) bet(name, spot string, amount int, wallet Wallet) []Even
 		spot = p.lastSpot
 	}
 	if spot == "" {
-		return []Event{t.private(name, "Bet on what? Try \"bet <amount> on player\", \"bet <amount> on banker\", or \"bet <amount> on tie\".")}
+		return []Event{t.private(name, "Bet on what? Try bet <amount> on "+t.Rules.betChoices()+".")}
 	}
-	if !baccaratSpotValid(spot) {
-		return []Event{t.private(name, "Baccarat bets must be on player, banker, or tie.")}
+	if !t.Rules.allowsSpot(spot) {
+		return []Event{t.private(name, "Baccarat bets must be on player, banker, or tie, or an enabled optional bet. Available: "+t.Rules.betChoices()+".")}
 	}
 	if p.HasBet {
 		return []Event{t.private(name, "You have already bet this round.")}
@@ -163,11 +159,14 @@ func (t *baccaratTable) deal() []Event {
 	round := t.event("New baccarat hand!", true)
 	round.Snapshot = t.snapshot(player, banker)
 	events := []Event{round, t.event(baccaratOutcomeMessage(playerTotal, bankerTotal), true)}
+	if explanation := baccaratVariantOutcome(player, banker, t.Rules); explanation != "" {
+		events = append(events, t.event(explanation, true))
+	}
 	for _, p := range t.players.ordered() {
 		if !p.HasBet {
 			continue
 		}
-		result, payout, settleErr := settleBaccaratBet(p.lastSpot, p.Wager.Total, playerTotal, bankerTotal, t.Rules)
+		result, payout, settleErr := settleBaccaratHand(p.lastSpot, p.Wager.Total, player, banker, t.Rules)
 		// The shared settlement path pays before announcing and leaves the
 		// stake pending on any failure, so a refund can never be paid on top
 		// of a payout that was not durable.
@@ -311,8 +310,11 @@ func bankerDraws(bankerTotal, playerThird int) bool {
 	}
 }
 
-// settleBaccaratBet returns the result label and total payout (stake plus
-// winnings) for one wager. Player and banker bets push on a tie. Winnings
+// settleBaccaratBet is the ordinary main-wager payout helper. Gameplay must
+// use settleBaccaratHand first to apply variant exceptions and optional bets;
+// totals alone cannot identify a three-card Banker seven.
+// It returns the result label and total payout (stake plus winnings).
+// Player and banker bets push on a tie. Winnings
 // round down to whole credits, so the banker commission effectively rounds
 // up: never bet less than one commission unit.
 func settleBaccaratBet(spot string, bet int, playerTotal, bankerTotal int, rules BaccaratConfig) (string, int, error) {