start castle java backend 🏰 (#81)

start castle backend 🏰

Author: aaylward

.ijwb/.bazelproject

@@ -15,3 +15,5 @@ additional_languages:
   # Uncomment any additional languages you want supported
   scala
   go
+
+java_language_level: 17

jvm/src/main/java/com/muchq/cards/BUILD.bazel

@@ -0,0 +1,10 @@
+java_library(
+    name = "cards",
+    srcs = [
+        "Card.java",
+        "Deck.java",
+        "Rank.java",
+        "Suit.java",
+    ],
+    visibility = ["//visibility:public"],
+)

jvm/src/main/java/com/muchq/cards/Card.java

@@ -0,0 +1,16 @@
+package com.muchq.cards;
+
+import java.util.List;
+
+public record Card(Suit suit, Rank rank) {
+    private static final List<Suit> SUITS = List.of(Suit.CLUBS, Suit.DIAMONDS, Suit.HEARTS, Suit.SPADES);
+    private static final List<Rank> RANKS = List.of(
+            Rank.TWO, Rank.THREE, Rank.FOUR, Rank.FIVE, Rank.SIX, Rank.SEVEN, Rank.EIGHT,
+            Rank.NINE, Rank.TEN, Rank.JACK, Rank.QUEEN, Rank.KING, Rank.ACE);
+
+    public static Card forIndex(int index) {
+        Suit s = SUITS.get(index % 4);
+        Rank r = RANKS.get(index % 13);
+        return new Card(s, r);
+    }
+}

jvm/src/main/java/com/muchq/cards/Deck.java

@@ -0,0 +1,47 @@
+package com.muchq.cards;
+
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Deque;
+import java.util.List;
+
+public record Deck(Deque<Card> cards) {
+    
+    public boolean hasNext() {
+        return !cards.isEmpty();
+    }
+
+    public Card nextCard() {
+        return cards.removeLast();
+    }
+
+    public Deck shuffled() {
+        List<Card> newCards = new ArrayList<>(cards);
+        Collections.shuffle(newCards);
+        return new Deck(new ArrayDeque<>(newCards));
+    }
+
+    public static Deck withJokers() {
+        var cards = cardsListWithNoJokers();
+        cards.add(new Card(Suit.NONE, Rank.JOKER));
+        cards.add(new Card(Suit.NONE, Rank.JOKER));
+        return new Deck(cards);
+    }
+
+    public static Deck noJokers() {
+        return new Deck(cardsListWithNoJokers());
+    }
+
+    private static Deque<Card> cardsListWithNoJokers() {
+        List<Card> cards = new ArrayList<>();
+        for (var suit : Suit.values()) {
+            for (var value : Rank.values()) {
+                if (suit != Suit.NONE && value != Rank.JOKER) {
+                    cards.add(new Card(suit, value));
+                }
+            }
+        }
+        return new ArrayDeque<>(cards);
+    }
+}

jvm/src/main/java/com/muchq/cards/Rank.java

@@ -0,0 +1,18 @@
+package com.muchq.cards;
+
+public enum Rank {
+    TWO,
+    THREE,
+    FOUR,
+    FIVE,
+    SIX,
+    SEVEN,
+    EIGHT,
+    NINE,
+    TEN,
+    JACK,
+    QUEEN,
+    KING,
+    ACE,
+    JOKER
+}

jvm/src/main/java/com/muchq/cards/Suit.java

@@ -0,0 +1,9 @@
+package com.muchq.cards;
+
+public enum Suit {
+    CLUBS,
+    DIAMONDS,
+    HEARTS,
+    SPADES,
+    NONE;
+}

jvm/src/main/java/com/muchq/cards/castle/BUILD.bazel

@@ -0,0 +1,14 @@
+java_library(
+    name = "castle",
+    srcs = [
+        "GameState.java",
+        "Player.java",
+        "ThreeDown.java",
+        "ThreeUp.java",
+        "Turn.java",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//jvm/src/main/java/com/muchq/cards",
+    ],
+)

jvm/src/main/java/com/muchq/cards/castle/GameState.java

@@ -0,0 +1,9 @@
+package com.muchq.cards.castle;
+
+import com.muchq.cards.Card;
+
+import java.util.Deque;
+import java.util.List;
+
+public record GameState(Deque<Card> drawPile, List<Player> players, Turn lastPlayed) {
+}

jvm/src/main/java/com/muchq/cards/castle/Player.java

@@ -0,0 +1,8 @@
+package com.muchq.cards.castle;
+
+import com.muchq.cards.Card;
+
+import java.util.List;
+
+public record Player(String name, List<Card> hand, ThreeUp faceUp, ThreeDown faceDown) {
+}

jvm/src/main/java/com/muchq/cards/castle/ThreeDown.java

@@ -0,0 +1,11 @@
+package com.muchq.cards.castle;
+
+import com.muchq.cards.Card;
+
+import java.util.Optional;
+
+public record ThreeDown(Optional<Card> left, Optional<Card> center, Optional<Card> right) {
+    public boolean isEmpty() {
+        return left().isEmpty() && center().isEmpty() && right().isEmpty();
+    }
+}

jvm/src/main/java/com/muchq/cards/castle/ThreeUp.java

@@ -0,0 +1,11 @@
+package com.muchq.cards.castle;
+
+import com.muchq.cards.Card;
+
+import java.util.Optional;
+
+public record ThreeUp(Optional<Card> left, Optional<Card> center, Optional<Card> right) {
+    public boolean isEmpty() {
+        return left().isEmpty() && center().isEmpty() && right().isEmpty();
+    }
+}

jvm/src/main/java/com/muchq/cards/castle/Turn.java

@@ -0,0 +1,6 @@
+package com.muchq.cards.castle;
+
+import com.muchq.cards.Rank;
+
+public record Turn(Rank rank, int howMany) {
+}

jvm/src/main/java/com/muchq/json/BUILD

@@ -1,6 +1,6 @@
 java_library(
     name = "json",
-    srcs = glob(["*.java"]),
+    srcs = ["JsonUtils.java"],
     visibility = ["//visibility:public"],
     deps = [
         "@maven//:com_fasterxml_jackson_core_jackson_core",