import java.io.*;
import java.net.*;
import java.util.*;
class FileName implements FilenameFilter  
{ 
    String str=null;
         FileName (String s)
         {
            str="."+s;
         }
    public  boolean accept(File dir,String name)
         { 
            return name.endsWith(str);
         }              
}

public class Server 
{  
  public static void main(String args[])
    {
     ServerSocket server=null;
     Socket you=null;
     while(true) 
            {
             try
                  { 
                    server=new ServerSocket(6666);
                  }
             catch(IOException e1) 
                  {
                     System.out.println("正在監聽");
                  } 
             try  {
                     you=server.accept();          
                     InetAddress address=you.getInetAddress();
                     System.out.println("客戶端的IP:"+address);
                     
                  }
             catch (IOException e)
                  {
                  }
             if(you!=null) 
                  {
                     new Server_thread(you).start(); 
                  }
             else {
                    continue;
                  }
           }
  }
}
class Server_thread extends Thread
{  
   int i=0;
   Socket socket=null;
   File file=null;
   DataOutputStream out=null;
   DataInputStream  in=null;
   ReadTestquestion 讀取試題=null;
   boolean 通知考試界面考試用時=true;
   Server_thread(Socket t)
       { 
         socket=t;
         try {
               in=new DataInputStream(socket.getInputStream());
               out=new DataOutputStream(socket.getOutputStream());
             }
         catch (IOException e)
             {
             }
         讀取試題=new ReadTestquestion();
       }  
 public void run()        
  {  
     
     while(true)
      {    String s=null;   
        try
           {
            s=in.readUTF();                          
            if(s.startsWith("列出考試文件"))        
              {
               String 當前目錄=System.getProperty("user.dir");
               File dir=new File(當前目錄);
               FileName fileTxt=new FileName("txt");
               String fileName[]=dir.list(fileTxt);   
               for(int i=0;i<fileName.length;i++) 
                  {
                    out.writeUTF("考試文件:"+fileName[i]); 
                  }
                out.writeUTF("已經全部列出:");
              }
            else if(s.startsWith("考試文件的名字:")) 
              {
                String fileName=s.substring(s.indexOf(":")+1);  
                讀取試題.setFilename(fileName);
                讀取試題.set完成考試(false);
                通知考試界面考試用時=true;                     
              }
            else if(s.startsWith("讀取下一題"))
              {
                String contentTest=讀取試題.getTestContent();  
                out.writeUTF("試題內容:"+contentTest);         
                if(通知考試界面考試用時==true)
                   {
                     long time=讀取試題.getTime();              
                     out.writeUTF("考試用時:"+time);  
                     通知考試界面考試用時=false;            
                   }
                if(讀取試題.get完成考試())
                   {
                     out.writeUTF("考試結束:"); 
                   }
                
              }
            else if(s.startsWith("提交的答案:"))
              {
                String answer=s.substring(s.indexOf(":")+1);  
                讀取試題.setSelection(answer);               
              }
            else if(s.startsWith("查看得分"))
              {
                int score=讀取試題.getScore();
                String messages=讀取試題.getMessages();
                out.writeUTF("分數:"+score+"\n"+messages);
              }
           }
       catch(IOException ee)
           {
              try{
                 socket.close();
                 }
              catch(Exception eee)
                 {
                 }
              System.out.println("客戶離開了");
              break;
           }             
     } 
  }
}