package jrummikub.model;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.*;
import static org.junit.Assert.*;

/**
 * Tests for {@link StoneHeap}
 */
public class StoneHeapTest {
	private StoneHeap testHeap;
	private GameSettings testSettings;

	/** */
	@Before
	public void createHeap() {
		testHeap = new StoneHeap(testSettings = new GameSettings());
	}

	private int calculateTotalNumberOfStones() {
		int totalStones = testSettings.getHighestCard()
				* testSettings.getStoneSetNumber()
				* testSettings.getStoneColors().size()
				+ testSettings.getJokerNumber();
		return totalStones;
	}

	/**
	 * Is the right number of Stones in heap?
	 */
	@Test
	public void fullStoneHeap() {
		assertEquals(calculateTotalNumberOfStones(), testHeap.heap.size());
	}

	/**
	 * Enough stones of each color in heap?
	 */
	@Test
	public void fullColor() {
		int stonesOfAColor = testSettings.getHighestCard()
				* testSettings.getStoneSetNumber();
		Map<StoneColor, Integer> counters = new HashMap<StoneColor, Integer>();
		for (StoneColor c : EnumSet.allOf(StoneColor.class)) {
			counters.put(c, 0);
		}
		for (Stone i : testHeap.heap) {
			if (i.isJoker())
				continue;
			int count = counters.get(i.getColor());
			counters.put(i.getColor(), count + 1);
		}
		for (StoneColor c : EnumSet.allOf(StoneColor.class)) {
			assertEquals(stonesOfAColor, (long) counters.get(c));
		}
	}

	/**
	 * Enough Jokers?
	 */
	@Test
	public void fullJoker() {
		int countJoker = 0;
		for (Stone i : testHeap.heap) {
			if (i.isJoker())
				countJoker++;
		}
		assertEquals(testSettings.getJokerNumber(), countJoker);
	}

	/** */
	@Test
	public void drawStoneTest() {
		assertNotNull(testHeap.drawStone());
		assertEquals(calculateTotalNumberOfStones() - 1, testHeap.heap.size());
	}

	/** */
	@Test
	public void drawStonesTest() {
		List<Stone> testStones = testHeap.drawStones(5);
		assertEquals(5, testStones.size());
		assertEquals(calculateTotalNumberOfStones() - 5, testHeap.heap.size());
	}
}