From b5a52fc0312afdf5d5fbe53275dc88d6d881c2ff Mon Sep 17 00:00:00 2001
From: salmonik <salmonik@tuta.io>
Date: Thu, 29 Oct 2026 18:22:40 +0100
Subject: v2.2.0: add blackjack with reserved bets and hit/stand/double

---
 src/client/games/blackjack.rs | 148 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 src/client/games/blackjack.rs

(limited to 'src/client/games/blackjack.rs')

diff --git a/src/client/games/blackjack.rs b/src/client/games/blackjack.rs
new file mode 100644
index 0000000..a34eb63
--- /dev/null
+++ b/src/client/games/blackjack.rs
@@ -0,0 +1,148 @@
+use super::traits::{Game, GameState};
+use crate::blackjack::{card_label, BlackjackState};
+
+pub const BLACKJACK_BOARD_LINES: usize = 6;
+
+pub struct BlackjackGame;
+
+impl BlackjackGame {
+    pub fn new() -> Self {
+        Self
+    }
+
+    fn state(state: &GameState) -> Option<BlackjackState> {
+        state
+            .data
+            .get("blackjack")
+            .and_then(|raw| serde_json::from_str(raw).ok())
+    }
+
+    fn cards(cards: &[String]) -> String {
+        cards
+            .iter()
+            .map(|card| {
+                if card == "?" {
+                    "[ ? ]".to_string()
+                } else {
+                    format!("[{}]", card_label(card))
+                }
+            })
+            .collect::<Vec<_>>()
+            .join(" ")
+    }
+
+    fn result_text(result: &str, winnings: u64) -> String {
+        match result {
+            "blackjack" => format!("BLACKJACK! Won {winnings} PLN"),
+            "win" => format!("Win! Won {winnings} PLN"),
+            "push" => "Push. Bet returned.".to_string(),
+            "lose" => "Dealer wins.".to_string(),
+            "bust" => "Bust.".to_string(),
+            "cancelled" => "Cancelled.".to_string(),
+            _ => "Hand complete.".to_string(),
+        }
+    }
+}
+
+impl Game for BlackjackGame {
+    fn get_name(&self) -> &'static str {
+        "Blackjack"
+    }
+
+    fn render(&self, state: &GameState) -> String {
+        let status = state
+            .data
+            .get("status")
+            .map(String::as_str)
+            .unwrap_or("ready");
+        let balance = state
+            .data
+            .get("balance")
+            .map(String::as_str)
+            .unwrap_or("?");
+        let hand = Self::state(state);
+
+        if let Some(error) = state.data.get("error") {
+            let bet = hand.as_ref().map(|hand| hand.bet).unwrap_or(state.bet_amount);
+            return format!(
+                "=== BLACKJACK ===\r\nBalance: {balance} PLN   Bet: {bet} PLN\r\n\r\n\r\nERROR: {error}\r\n[Q] Quit"
+            );
+        }
+
+        let (dealer, dealer_total, player, player_total, bet, text, controls) =
+            if let Some(hand) = &hand {
+                let bet = if status == "player" {
+                    hand.bet
+                } else {
+                    state.bet_amount
+                };
+                let text = match status {
+                    "player" => {
+                        if hand.actions.iter().any(|action| action == "double") {
+                            "Hit, stand or double.".to_string()
+                        } else {
+                            "Hit or stand.".to_string()
+                        }
+                    }
+                    "dealing" => "Dealing...".to_string(),
+                    "cancelling" => "Cancelling...".to_string(),
+                    "done" => Self::result_text(&hand.result, hand.winnings),
+                    _ => "Press [SPACE] to deal.".to_string(),
+                };
+                let controls = if status == "player" {
+                    if hand.actions.iter().any(|action| action == "double") {
+                        "[H]it [S]tand [D]ouble [Q]uit".to_string()
+                    } else {
+                        "[H]it [S]tand [Q]uit".to_string()
+                    }
+                } else {
+                    "[SPACE] New hand   [+/-] Bet   [Q] Quit".to_string()
+                };
+                (
+                    Self::cards(&hand.dealer),
+                    hand.dealer_total,
+                    Self::cards(&hand.player),
+                    hand.player_total,
+                    bet,
+                    text,
+                    controls,
+                )
+            } else {
+                (
+                    "—".to_string(),
+                    0,
+                    "—".to_string(),
+                    0,
+                    state.bet_amount,
+                    "Press [SPACE] to deal.".to_string(),
+                    "[SPACE] Deal   [+/-] Bet   [Q] Quit".to_string(),
+                )
+            };
+
+        format!(
+            "=== BLACKJACK ===\r\nBalance: {} PLN   Bet: {} PLN\r\nDealer: {}   {}\r\nYou:    {}   {}\r\n{}\r\n{}",
+            balance, bet, dealer, dealer_total, player, player_total, text, controls
+        )
+    }
+
+    fn render_lines(&self, _state: &GameState) -> usize {
+        BLACKJACK_BOARD_LINES
+    }
+
+    fn get_help(&self) -> String {
+        "BLACKJACK\n\
+        =========\n\
+        Six-deck shoe, fresh for every hand.\n\
+        Dealer stands on all 17s.\n\
+        Blackjack pays 3:2.\n\
+        Double is allowed on the first two cards.\n\
+        \n\
+        H - hit\n\
+        S - stand\n\
+        D - double (when available)\n\
+        SPACE - deal a new hand\n\
+        +/- - change the next hand's bet\n\
+        Q - leave the table"
+            .to_string()
+    }
+}
-- 
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