package bomb;

import javax.swing.JPanel;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.event.*;
import java.awt.Dimension;
import javax.swing.JOptionPane;

public class BombPanel extends JPanel {
  private Location location = new Location();
  private int result[][] = new int[20][20];//當前用戶的狀態
  private int bombCount[][]=new int[20][20];//初始化,如果為-1，說明是雷，否則為雷的個數
  private int bombNumber=80;//定義雷的個數
  private int isWin;
  private int checkedBomb=0;

  public BombPanel(int number) {
    bombNumber=number;
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public BombPanel() {
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }


  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    g.setColor(Color.yellow);
    g.fillRect(10, 10, 400, 400);
    g.setColor(Color.BLUE);
    g.draw3DRect(10, 10, 400, 400, false);
    g.setColor(Color.BLUE);
    for (int i = 1; i < 20; i++) {
      g.drawLine(10, 10 + i * 20, 410, 10 + i * 20);
      g.drawLine(10 + i * 20, 10, 10 + i * 20, 410);
    }

    g.drawString("Bomb Remains:"+String.valueOf(bombNumber-checkedBomb),20,423);

    for (int i = 0; i < 20; i++) {
      for (int j = 0; j < 20; j++) {
        //已經點擊，但不是雷
        if (result[i][j] > 0) {
          g.setColor(Color.black);
          g.drawString(String.valueOf(result[i][j]), 18 + 20 * i, 25 + 20 * j);
        }
        //已經點擊，但周圍沒有雷
        if (result[i][j]==0){
          g.setColor(Color.white);
          g.fill3DRect(10+20*i,10+20*j,20,20,false);
        }

        //點擊了雷
        if(result[i][j]==-1){
          g.setColor(Color.red);
          g.fillOval(10+20*i,10+20*j,20,20);
        }
        //挖雷
        if(result[i][j]==-3){
          g.setColor(Color.PINK);
          g.fillRect(10+20*i,10+20*j,20,20);
          g.setColor(Color.red);
          g.drawString("B", 18 + 20 * i, 25 + 20 * j);
        }
      }
    }
  }

  private void jbInit() throws Exception {
    this.addMouseListener(new BombPanel_this_mouseAdapter(this));

    for(int i=0;i<20;i++){
      for(int j=0;j<20;j++){
        result[i][j]=-2;//初始化，沒有挖雷
        bombCount[i][j]=0;
      }
    }

    int count=0;
    int x=0,y=0;
    while(count<bombNumber){
      x=(int)(Math.random()*20);
      y=(int)(Math.random()*20);
      if(bombCount[x][y]!=-1){
        bombCount[x][y] = -1;
        count++;
        //JOptionPane.showMessageDialog(this,String.valueOf(x)+" "+String.valueOf(y));
      }
    }


    for(int i=0;i<20;i++){
      for (int j = 0; j < 20; j++) {
        if(bombCount[i][j] ==0){
          for(int m=((i-1>0)?i-1:0);m<((i+2<20)?i+2:20);m++)
            for(int n=((j-1>0)?j-1:0);n<((j+2<20)?j+2:20);n++)
                if (bombCount[m][n] == -1)
                  bombCount[i][j]+=1;
        }
      }
    }
  }

  void this_mouseClicked(MouseEvent e) {
    location.setXY(e.getX(),e.getY());
    Dimension clickedLocation=location.getClickedLocation();
    if(e.getButton()==1){
      result[clickedLocation.width][clickedLocation.height]=bombCount[clickedLocation.width][clickedLocation.height];
      if(result[clickedLocation.width][clickedLocation.height]==-1){
        JOptionPane.showMessageDialog(this,"You Lose！！");
      }else{
      for(int m=((clickedLocation.width-1>0)?clickedLocation.width-1:0);m<((clickedLocation.width+2<20)?clickedLocation.width+2:20);m++)
        for(int n=((clickedLocation.height-1>0)?clickedLocation.height-1:0);n<((clickedLocation.height+2<20)?clickedLocation.height+2:20);n++)
            if (bombCount[m][n] == 0){
              click(m, n);
            }
      }
    }
    else{
      if(result[clickedLocation.width][clickedLocation.height] ==-3)
        result[clickedLocation.width][clickedLocation.height] = 0;
     else
      result[clickedLocation.width][clickedLocation.height] = -3;
    }

    repaint();

    isWin=1;
    checkedBomb=0;
    for(int i=0;i<20;i++)
      for(int j=0;j<20;j++){
        if (result[i][j] == -2) isWin = 0;
        if(result[i][j]==-3)checkedBomb+=1;
      }
    if(isWin==1&&checkedBomb==bombNumber)
      JOptionPane.showMessageDialog(this, "You Win！！！");
  }

  private void click(int m,int n){
    result[m][n]=bombCount[m][n];
    for(int i=((m-1>0)?m-1:0);i<((m+2<20)?m+2:20);i++)
      for(int j=((n-1>0)?n-1:0);j<((n+2<20)?n+2:20);j++)
        if (bombCount[i][j] == 0&&result[i][j]==-2)
          click(i,j);
        else{
          if (bombCount[i][j] > 0&&result[i][j]==-2)
            result[i][j]=bombCount[i][j];
        }
  }
}

class BombPanel_this_mouseAdapter extends java.awt.event.MouseAdapter {
  BombPanel adaptee;

  BombPanel_this_mouseAdapter(BombPanel adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.this_mouseClicked(e);
  }
}