From 4387e2cb14a1a98186ee196ef4f1596aa31088a6 Mon Sep 17 00:00:00 2001
From: Niklas Kapelle <niklas@kapelle.org>
Date: Mon, 13 May 2024 18:07:41 +0200
Subject: [PATCH] double down

---
 src/blackjack.rs         | 14 ++++++++++++--
 src/console_blackjack.rs | 11 ++++++++---
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/src/blackjack.rs b/src/blackjack.rs
index 3156629..8bcaef1 100644
--- a/src/blackjack.rs
+++ b/src/blackjack.rs
@@ -10,7 +10,7 @@ pub struct BlackjackGame {
 pub enum PlayResult {
     DealerBlackJack, // Dealer has a blackjack. Player does not
     PlayerBlackJack, // Player has a blackjack. Dealer does not
-    PushBlackjack,   // Player and dealer have a blockjack
+    PushBlackjack,   // Player and dealer have a blackjack
     Push,            // Dealer has a Blackjack and so does the Player
     Bust,            // Player bust
     DealerBust,      // Dealer bust
@@ -24,6 +24,7 @@ pub enum PlayResult {
 pub enum PlayMoves {
     Hit,
     Stand,
+    DoubleDown,
     Bet, // At the Start of the game
 }
 
@@ -97,7 +98,16 @@ impl BlackjackGame {
                     }
                     std::cmp::Ordering::Less => PlayResult::Continue,
                 };
-            }
+            },
+            (GameState::PlayerTurn, PlayMoves::DoubleDown) => {
+                if self.player_hand.count() > 2{
+                    return PlayResult::InvalidMove;
+                }
+                
+                self.player_hand.add_card(self.shoe.pop_card().unwrap());
+                self.state = GameState::Over;
+                return self.dealer_play();
+            },
             (GameState::PlayerTurn, PlayMoves::Stand) => {
                 self.state = GameState::Over;
                 return self.dealer_play();
diff --git a/src/console_blackjack.rs b/src/console_blackjack.rs
index bb8c3aa..2f075ea 100644
--- a/src/console_blackjack.rs
+++ b/src/console_blackjack.rs
@@ -12,12 +12,16 @@ pub fn play() -> Result<(), Box<dyn std::error::Error>> {
                 print_full_state(&game);
                 println!("Dealer wins with blackjack!");
             }
-            crate::blackjack::PlayResult::PlayerBlackJack => println!("Player has a blackjack!"),
+            crate::blackjack::PlayResult::PlayerBlackJack => {
+                print_full_state(&game);
+                println!("Player has a blackjack!");
+            },
             crate::blackjack::PlayResult::PushBlackjack => {
                 print_full_state(&game);
                 println!("Player and Dealer have a blackjack!");
             }
             crate::blackjack::PlayResult::DealerBust => {
+                print_full_state(&game);
                 println!("Dealer busts. Player wins!");
             }
             crate::blackjack::PlayResult::StandPlayerLose => {
@@ -36,7 +40,7 @@ pub fn play() -> Result<(), Box<dyn std::error::Error>> {
             }
             crate::blackjack::PlayResult::Push => {
                 print_full_state(&game);
-                println!("Player and dealer have the same value");
+                println!("Player and dealer have the same value. Push!");
             }
             crate::blackjack::PlayResult::Bust => {
                 print_full_state(&game);
@@ -66,7 +70,7 @@ pub fn play() -> Result<(), Box<dyn std::error::Error>> {
 
 fn get_move() -> Result<PlayMoves, io::Error> {
     loop {
-        println!("(H)it (S)tand");
+        println!("(H)it (S)tand (D)double");
         let mut buffer = String::new();
 
         stdin().read_line(&mut buffer)?;
@@ -74,6 +78,7 @@ fn get_move() -> Result<PlayMoves, io::Error> {
         match buffer.trim() {
             "h" | "H" => return Ok(PlayMoves::Hit),
             "s" | "S" => return Ok(PlayMoves::Stand),
+            "d" | "D" => return Ok(PlayMoves::DoubleDown),
             _ => {}
         }
     }