package controller;

import java.awt.Graphics;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import listener.ContainerListener;

import util.Global;
import util.IConstant;
import view.LeftContainerPanel;
import view.RightContainerPanel;

import entities.Block;
import entities.BlockFactory;
import entities.FormListener;
import entities.LeftContainer;
import entities.RightContainer;

public class Controller extends KeyAdapter implements IConstant, ContainerListener,Runnable
{

	public static final int INIT = 1;
	public static final int PLAYING = 2;
	public static final int PAUSE = 3;
	public static final int SUCCESS = 5;
	public static final int FAIL = 6;
	private Block curBlock = null;// 当前块
	private Block nextBlock = null;// 下一个块
	private BlockFactory blockFactory = null;
	private RightContainer rightContainer = null;
	private LeftContainer leftContainer = null;
	public static int gameState;

	//private int score;
	
	public boolean run;

	private LeftContainerPanel leftContainerPanel;
	private RightContainerPanel rightContainerPanel;
	
	private FormListener formListener;

	public Controller(LeftContainerPanel leftContainerPanel,RightContainerPanel rightContainerPanel)
	{
		this.leftContainerPanel = leftContainerPanel;
		this.rightContainerPanel = rightContainerPanel;
		init();
	}

	private void init()
	{
		blockFactory = new BlockFactory();
		leftContainer = new LeftContainer();
		rightContainer = new RightContainer();
		rightContainer.setListener(this);
		
		setState(INIT);
		new Thread(this).start();
		
	}
	
	//开始游戏
	public void startGame()
	{
		clear();
		curBlock = blockFactory.getBlock();
		nextBlock = blockFactory.getBlock();
		leftContainer.init();
		rightContainer.init();
		setState(PLAYING);
	}
	
	//暂停游戏
	public void pauseGame()
	{
		setState(PAUSE);
	}
	
	//继续游戏
	public void continueGame()
	{
		setState(PLAYING);
	}
	
	//结束游戏
	public void endGame()
	{
		clear();
		setState(INIT);
	}
	
	private void clear()
	{
		curBlock = null;
		nextBlock = null;
	}
	
	
	

	/** 把下一个方块给当前方块，然后重新产生下一个方块 */
	private void proNewBlock()
	{
		curBlock = nextBlock;
		nextBlock = blockFactory.getBlock();
	}

	int flag = 0;// 控制游戏的速度

	/** 刷新当前页面 */
	public void update()
	{
		switch(gameState)
		{
			case INIT:
				rightContainerPanel.redisplay(curBlock, rightContainer);
				rightContainerPanel.repaint();
				leftContainerPanel.redisplay(nextBlock, leftContainer);
				leftContainerPanel.repaint();
				break;
			case PLAYING:
				if (flag == Global.DOWN_SPEED - 1)
				{
					if (rightContainer.isMoveable(curBlock, Block.DOWN))
					{
						curBlock.moveDown();
					}
					else
					{
						rightContainer.setBarrier(curBlock);
						if (!rightContainer.isFull())
						{
							// 产生新图像
							proNewBlock();
						}
					}
				}
				flag = (++flag) % Global.DOWN_SPEED;
				rightContainerPanel.redisplay(curBlock, rightContainer);
				rightContainerPanel.repaint();
				leftContainerPanel.redisplay(nextBlock, leftContainer);
				leftContainerPanel.repaint();
				break;
			case PAUSE:
				rightContainerPanel.redisplay(curBlock, rightContainer);
				rightContainerPanel.repaint();
				leftContainerPanel.redisplay(nextBlock, leftContainer);
				leftContainerPanel.repaint();
				break;
			case FAIL:
				rightContainerPanel.redisplay(null, rightContainer);
				rightContainerPanel.repaint();
				leftContainerPanel.redisplay(nextBlock, leftContainer);
				leftContainerPanel.repaint();
				break;
		}
		

	}

	/** 设置游戏状态 */
	public static void setState(int state)
	{
		gameState = state;
	}


//	public void setScore(int score)
//	{
//		this.score = score;
//	}

	public void containerIsFull()
	{
		// curBlock = null;
		setState(FAIL);
	}

	public void removeFullLine(int score)
	{
		//this.score = this.score + score;// 消除满行后增加分数
		formListener.addScore(score);

	}

	@Override
	public void run()
	{
		while(true)
		{
			update();
			
			try
			{
				Thread.sleep(Global.SLEEPTIME);
			} catch (InterruptedException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}


	@Override
	public void keyPressed(KeyEvent e)
	{
		if(gameState ==PLAYING)
		{
			switch (e.getKeyCode())
			{
				case KeyEvent.VK_UP:
				
					if (rightContainer.isMoveable(curBlock, Block.ROTATE))
					{
						curBlock.rotBlock();
					}
				break;
				case KeyEvent.VK_DOWN:
					if (rightContainer.isMoveable(curBlock, Block.DOWN))
					{
						curBlock.moveDown();
					}
				break;
				case KeyEvent.VK_LEFT:
					if (rightContainer.isMoveable(curBlock, Block.LEFT))
					{
						curBlock.moveLeft();
					}
				break;
				case KeyEvent.VK_RIGHT:
					if (rightContainer.isMoveable(curBlock, Block.RIGHT))
					{
						curBlock.moveRight();
					}
				break;
			}
		}
		
	}
	
	public void addListener(FormListener formListener)
	{
		this.formListener = formListener;
	}

}