d20-charsheet/src/main/lombok/org/leumasjaffe/charsheet/model/features/DDProperty.java

package org.leumasjaffe.charsheet.model.features;

import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonSubTypes.Type;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonTypeInfo.Id;

import lombok.AllArgsConstructor;

@JsonTypeInfo(use=Id.NAME)
@JsonSubTypes({
	@Type(name="Simple", value=DDProperty.Simple.class),
	@Type(name="Flat", value=DDProperty.Flat.class),
	@Type(name="SpellLevel", value=DDProperty.PerSpellLevel.class)
})
public interface DDProperty {
	public enum Group {
		NONE
	}
	boolean appliesTo(String key);
	<T> T value();
	
	@AllArgsConstructor
	public class Simple implements DDProperty {
		String name;
		@Override public boolean appliesTo(String key) { return false; }
		@Override public <T> T value() { return null; }
	}

	@AllArgsConstructor
	public static class Flat implements DDProperty {
		String applies;
		Group group;
		int value;
		
		@Override
		public boolean appliesTo(String key) {
			return applies.equals(key);
		}

		@SuppressWarnings("unchecked")
		@Override
		public Object value() {
			return this.value;
		}
	}
	
	@AllArgsConstructor
	public static class PerSpellLevel implements DDProperty {
		String applies;
		Group group;
		int value;
		
		@Override
		public boolean appliesTo(String key) {
			return applies.equals(key);
		}

		@SuppressWarnings("unchecked")
		@Override
		public Object value() {
			return this.value; // TODO consume spell level information
		}
	}
}