AddDescriptionSpell.java

package net.demilich.metastone.game.spells;

import net.demilich.metastone.game.GameContext;
import net.demilich.metastone.game.Player;
import net.demilich.metastone.game.cards.Attribute;
import net.demilich.metastone.game.cards.dynamicdescription.DynamicDescriptionDesc;
import net.demilich.metastone.game.entities.Entity;
import net.demilich.metastone.game.spells.desc.SpellArg;
import net.demilich.metastone.game.spells.desc.SpellDesc;

import java.util.Arrays;
import java.util.stream.Stream;

/**
 * Adds the {@link net.demilich.metastone.game.spells.desc.SpellArg#SECONDARY_TARGET} card's text to the {@code
 * target}'s description, concatenating with a space.
 * <p>
 * Since the target may contain dynamic description entries, we have to copy those too.
 */
public class AddDescriptionSpell extends SetDescriptionSpell {

	@Override
	protected void onCast(GameContext context, Player player, SpellDesc desc, Entity source, Entity target) {
		String description = "";
		if (target == null) {
			return;
		}
		if (desc.containsKey(SpellArg.SECONDARY_TARGET)) {
			Entity secondaryTarget = context.resolveSingleTarget(player, source, desc.getSecondaryTarget());
			description = secondaryTarget.getDescription();
			DynamicDescriptionDesc[] dynamicDescription = secondaryTarget.getSourceCard().getDynamicDescription();
			if (dynamicDescription != null && dynamicDescription.length > 0) {
				target.setAttribute(Attribute.DYNAMIC_DESCRIPTION,
						Stream.concat(
								Arrays.stream((DynamicDescriptionDesc[]) target.getAttributes().getOrDefault(Attribute.DYNAMIC_DESCRIPTION,
										new DynamicDescriptionDesc[0])), Arrays.stream(dynamicDescription)).toArray(DynamicDescriptionDesc[]::new));
			}
		} else if (desc.containsKey(SpellArg.DESCRIPTION)) {
			description = desc.getString(SpellArg.DESCRIPTION);
		}
		if (target.getDescription() != null && target.getDescription().equals("")) {
			target.setAttribute(Attribute.DESCRIPTION, description);
		} else {
			target.setAttribute(Attribute.DESCRIPTION, target.getDescription() + " " + description);
		}
	}
}