import javax.swing.*;
import java.math.*;

public class SpoolingTest{
	private static Output output1 , output2;
	private static Spooling spo;
	private static List list = new List();//存儲井
	private static List wait = new List();//等待隊列
	private static String[] file1 = new String[50];//輸出進程一的文件
	private static String s ="";
	private static String[] file2 = new String[50];//輸出進程二的文件
	private static int num1 , num2;//輸出進程的文件數
	private String input1 , input2;
	
	public SpoolingTest()
	{
	  output1 = new Output( "輸出進程1" ); 
   	  output2 = new Output( "輸出進程2" );
   	  spo = new Spooling( "Spooling進程" );	
   	  input1 = JOptionPane.showInputDialog( "Input the times of user1's output file");
	  input2 = JOptionPane.showInputDialog( "Input the times of user1's output file");
	  num1 = Integer.parseInt( input1 );
	  num2 = Integer.parseInt( input2 );
	}
	
	public static boolean input( String s ) //將s插入存儲井中，成功插入返回true,存儲井滿返回false.
	{
		if( list.getSize() <= 10 ) //存儲井可放10個文件
	 	  {
	 	  	list.insertAtBack( s );
		    return true;
		  }
		 else
		    return false;
	}
	
	public void run()
	{
	     int i = 0;//輸出進程一的文件計數器 
	     int j = 0;//輸出進程二的文件計數器 
	     String first;//記錄等待隊列的第一個文件
	     
	     System.out.println( "程序啟動:" );
	     System.out.println( "\n" );
	     
	     while( !(list.getSize() ==0 && i == num1 && j == num2) )
	        // 當存儲井為空，計數器i,j分別等于輸出進程一二的文件數，結束運行
	     {
          double choose = Math.random(); //隨機決定要運行進程
          if( choose <= 0.45 )//運行輸出進程一
           {  
              if( i == num1 )
              continue;
              output1.setStatus( 1 );
           	  spo.setStatus( 0 );
              output2.setStatus( 0 );           
             
              System.out.println( output1.getName() + "運行.  " + output2.getName() + "," + spo.getName() + "等待.");
              System.out.println( "\n");
              file1[i] = output1.produce();//產生輸出進程一的一個文件
              
              if( input( file1[i] ) ) //判斷能否插入存儲井
              {
                System.out.println("生成" + file1[i]+"放入存儲井中.");
                System.out.println( "\n");
              }
              else
                {
                	wait.insertAtBack( file1[i] ); //存儲井滿，將該文件插入等待隊列
                    System.out.println( "存儲井滿," + output1.getName() + "把第"+i+"個"+file1[i]+"插入等待隊列.");
                    System.out.println( "\n");
                    output1.setStatus(0);
                }
                
                i++;//文件數計數器加一
            }
            
          if( choose > 0.45 && choose <= 0.9 )//運行輸出進程二
            {  
              if( j == num2 )
              continue;
              output2.setStatus( 1 );
           	  spo.setStatus( 0 );
              output1.setStatus( 0 );           
           
              System.out.println( output2.getName() + "運行.  " + output1.getName() + "," + spo.getName() + "等待.");
              System.out.println( "\n");
              file2[j] = output2.produce();//產生輸出進程一的一個文件
              if( input( file2[j] ) ) //判斷能否插入存儲井
              {
                System.out.println("生成" + file2[j] + "放入存儲井中.");
                System.out.println( "\n");
              }
              else
                {
                	wait.insertAtBack( file2[j] );//將該文件插入等待隊列
                    System.out.println( "存儲井滿," + output2.getName() + "把第"+j+"個"+file2[j]+"插入等待隊列.");
                    System.out.println( "\n");
                    output2.setStatus(0);
                }
              j++;//文件數計數器加一  
            }
            
          if( choose > 0.9 )//運行Spooling進程
            { 
              System.out.println( "Spooling進程運行." );
              System.out.println( "" );
              output2.setStatus( 0 );
           	  output1.setStatus( 0 );           
               
              if( list.getSize() == 0 )
              {
              	System.out.println("存儲井為空!");
              	System.out.println( "\n");
                spo.setStatus( -1 );//當存儲井為空時，狀態為-1
                continue;
              }
              else
              {
              	
              	System.out.println( "向I/O設備輸出" + list.removeFromFront() );
              	System.out.println( "\n" );
              	if( !( wait.isEmpty() ) )//判斷是等待隊列中是否有要插入存儲井的文件
              	{
              		first = wait.removeFromFront();
              	    System.out.println( "將等待隊列中的第一個" + first + "放入存儲井" );
              	    list.insertAtBack( first );
                }
                else
                    
                    System.out.println( "沒有等待進入存儲井的的文件!" );
                    System.out.println( "\n" );
              }
              
	
          	}
          	
          }	
          System.out.println( "運行結束!!!" );	
	}
	
	public static void main( String args[] )
	{    
         SpoolingTest app = new SpoolingTest();
         app.run();
	}
}