/**
 * Copyright (C) 2017 Jan Schäfer (jansch@users.sourceforge.net)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jskat.util.rule;

import org.jskat.data.SkatGameData;
import org.jskat.util.Card;
import org.jskat.util.CardList;
import org.jskat.util.GameType;
import org.jskat.util.SkatConstants;
import org.jskat.util.Suit;

/**
 * Implementation of skat rules for Null games
 * 
 */
public class NullRule extends AbstractSkatRule {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int getGameValueForWonGame(final SkatGameData gameData) {

		Integer gameValue = SkatConstants.getGameBaseValue(
				gameData.getGameType(), gameData.isHand(), gameData.isOuvert());

		if (gameData.isContra()) {
			gameValue *= 2;
			if (gameData.isRe()) {
				gameValue *= 2;
			}
		}

		return gameValue;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int calcGameResult(final SkatGameData gameData) {

		int result = getGameValueForWonGame(gameData);

		if (gameData.isGameLost()) {

			// Lost game is always counted double
			result = result * -2;
		}

		return result;
	}

	/**
	 * @see SkatRule#isCardBeatsCard(GameType, Card, Card)
	 */
	@Override
	public boolean isCardBeatsCard(
			@SuppressWarnings("unused") final GameType gameType,
			final Card cardToBeat, final Card card) {

		boolean result = false;

		if (cardToBeat.getSuit() == card.getSuit()) {

			if (cardToBeat.getNullOrder() < card.getNullOrder()) {

				result = true;
			}
		}

		return result;
	}

	/**
	 * @see SkatRule#isCardAllowed(GameType, Card, CardList, Card)
	 */
	@Override
	public boolean isCardAllowed(final GameType gameType,
			final Card initialCard, final CardList hand, final Card card) {

		boolean result = false;

		if (initialCard == null) {
			// no intial card is given --> every card is allowed
			result = true;
		} else if (card.getSuit() == initialCard.getSuit()) {
			// card must serve same suit
			result = true;

		} else if (!hand.hasSuit(gameType, initialCard.getSuit())) {
			// hand has no card of same suit --> every card is allowed
			result = true;
		}

		return result;
	}

	/**
	 * @see SkatRule#isGameWon(SkatGameData)
	 */
	@Override
	public boolean isGameWon(final SkatGameData gameData) {

		return gameData.isPlayerMadeNoTrick(gameData.getDeclarer())
				&& !isOverbid(gameData);
	}

	/**
	 * @see SkatRule#hasSuit(GameType, CardList, Suit)
	 */
	@Override
	public boolean hasSuit(final GameType gameType, final CardList hand,
			final Suit suit) {

		boolean result = false;

		int index = 0;
		while (!result && index < hand.size()) {

			if (hand.get(index).getSuit() == suit) {

				result = true;
			}

			index++;
		}

		return result;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int getMultiplier(
			@SuppressWarnings("unused") final SkatGameData gameData) {
		return 0;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean isPlayWithJacks(
			@SuppressWarnings("unused") final SkatGameData gameData) {
		return false;
	}
}