1 files changed, 137 insertions, 0 deletions
diff --git a/src/eu/equalparts/cardbase/containers/ReferenceCardContainer.java b/src/eu/equalparts/cardbase/containers/ReferenceCardContainer.java
new file mode 100644
index 0000000..41c4224
--- /dev/null
+++ b/src/eu/equalparts/cardbase/containers/ReferenceCardContainer.java
@@ -0,0 +1,137 @@
+package eu.equalparts.cardbase.containers;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import eu.equalparts.cardbase.cards.Card;
+
+/**
+ * A class which contains card quantities with absolutely no other
+ * information about the cards themselves.
+ * 
+ * @author Eduardo Pedroni
+ *
+ */
+public class ReferenceCardContainer {
+
+	/**
+	 * Land field initialised to 0, accessed with getter and updated with setter.
+	 */
+	private int plains = 0, islands = 0, swamps = 0, forests = 0, mountains = 0;
+	/**
+	 * A map with card hashes as entry keys (calculated used {@code Card.hashCode()})
+	 * and card amounts as entry values.
+	 */
+	@JsonProperty private Map<Integer, Integer> cardReferences = new HashMap<>();
+
+	/**
+	 * Returns the amount of the specified card. If the card is not present at all, return 0.
+	 * 
+	 * @param cardToCount a card whose count is to be returned.
+	 * @return the count of the returned card in the container.
+	 */
+	public int getCount(Card cardToCount){
+		int cardHash = cardToCount.hashCode();
+		return cardReferences.containsKey(cardHash) ? cardReferences.get(cardHash) : 0;
+	}
+	
+	/**
+	 * @param cardToAdd the card to add the container.
+	 * @param count the amount to add.
+	 */
+	public void addCard(Card cardToAdd, int count) {
+		cardReferences.put(cardToAdd.hashCode(), getCount(cardToAdd) + count);
+	}
+	
+	/**
+	 * @param cardToRemove the card to remove from the container.
+	 * @param count the amount to remove.
+	 * @return the amount that was effectively removed. Could be less than {@code count}
+	 * depending on how many of the card were present.
+	 */
+	public int removeCard(Card cardToRemove, int count) {
+		int cardHash = cardToRemove.hashCode();
+		if (count <= 0 || !cardReferences.containsKey(cardHash)) {
+			return 0;
+		}
+		
+		if (count >= cardReferences.get(cardHash)) {
+			return cardReferences.remove(cardHash);
+		} else {
+			cardReferences.put(cardHash, cardReferences.get(cardHash) - count);
+			return count;
+		}
+	}
+
+	/**
+	 * @return the plains
+	 */
+	public int getPlains() {
+		return plains;
+	}
+
+	/**
+	 * @return the islands
+	 */
+	public int getIslands() {
+		return islands;
+	}
+
+	/**
+	 * @return the swamps
+	 */
+	public int getSwamps() {
+		return swamps;
+	}
+
+	/**
+	 * @return the forests
+	 */
+	public int getForests() {
+		return forests;
+	}
+
+	/**
+	 * @return the mountains
+	 */
+	public int getMountains() {
+		return mountains;
+	}
+
+	/**
+	 * @param plains the plains to set
+	 */
+	public void setPlains(int plains) {
+		this.plains = plains;
+	}
+
+	/**
+	 * @param islands the islands to set
+	 */
+	public void setIslands(int islands) {
+		this.islands = islands;
+	}
+
+	/**
+	 * @param swamps the swamps to set
+	 */
+	public void setSwamps(int swamps) {
+		this.swamps = swamps;
+	}
+
+	/**
+	 * @param forests the forests to set
+	 */
+	public void setForests(int forests) {
+		this.forests = forests;
+	}
+
+	/**
+	 * @param mountains the mountains to set
+	 */
+	public void setMountains(int mountains) {
+		this.mountains = mountains;
+	}
+}