Adds unfinished code for storing arena rewards

src/main/java/net/knarcraft/minigames/arena/reward/EconomyReward.java

@@ -0,0 +1,57 @@
+package net.knarcraft.minigames.arena.reward;
+
+import net.knarcraft.minigames.config.Message;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A reward that gives an amount of currency when it's granted
+ */
+public class EconomyReward implements Reward {
+
+    private final double amount;
+
+    /**
+     * Instantiates a new economy reward
+     *
+     * @param amount <p>The amount of currency granted</p>
+     */
+    public EconomyReward(double amount) {
+        this.amount = amount;
+    }
+
+    @Override
+    public boolean grant(@NotNull Player player) {
+        //TODO: Requires Vault integration
+        return false;
+    }
+
+    @Override
+    public @NotNull String getGrantMessage() {
+        //TODO: Print formatted currency amount and currency unit
+        return Message.SUCCESS_ECONOMY_REWARDED.getMessage("{currency}", String.valueOf(amount));
+    }
+
+    @NotNull
+    @Override
+    public Map<String, Object> serialize() {
+        Map<String, Object> data = new HashMap<>();
+        data.put("amount", amount);
+        return data;
+    }
+
+    /**
+     * Deserializes the economy reward defined in the given data
+     *
+     * @param data <p>The data to deserialize from</p>
+     * @return <p>The deserialized data</p>
+     */
+    @SuppressWarnings("unused")
+    public static EconomyReward deserialize(Map<String, Object> data) {
+        return new EconomyReward((Double) data.get("amount"));
+    }
+
+}