package tutor;

import java.net.*;
import java.io.*;
import java.util.*;
import java.applet.*;

/**
 * 
 * This class allows a student to practice learning a language
 * by listening to the sounds and then looking at the 
 * transcription and the {@linkplain tutor.Translation}
 * 
 *  @see: DataFile, SoundDownload, Record etc 
 */
public class Practice extends Object 
{
  //--------------------------------------------
  /** the current user language */
  private String userLanguageCode;
  //--------------------------------------------
  public static String NEWLINE = System.getProperty("line.separator");
  //--------------------------------------------

  //--------------------------------------------
  public static void main(String[] args) throws Exception
  {
    StringBuffer sbUserMessage = new StringBuffer("");
    sbUserMessage.append("usage: java Practice [datafile] \n");
    sbUserMessage.append("An example of a datafile can be seen at \n");
    sbUserMessage.append("http://bumble.sourceforge.net/ \n");

    if (args.length == 0)
    {
      System.out.println(sbUserMessage);
      System.exit(-1);
    }

    StringBuffer sOutput = new StringBuffer();
    RecordSet dfTest;

    dfTest = new RecordSet(args[0]);

     try
     {
        File fDataFile = new File(args[0]);  
        dfTest = new RecordSet(args[0]);
     }
     catch (Exception e)
     {
        sOutput.append("There was a problem with the [datafile] argument you passed");
        sOutput.append(args[0]);
        sOutput.append("The error message generated was");
        sOutput.append(e);
        sOutput.append(sbUserMessage);
        sOutput.append("");

        System.exit(-1);
     }

     SoundDownload sdCurrent = new SoundDownload();
     SoundLoadManager dmTest = new SoundLoadManager(dfTest);
     Vector soundDownloads = new Vector();
     Enumeration ee = soundDownloads.elements();

     dmTest.startDownloading();
     //--------------------------------------
     //-- make a simple command loop 
     BufferedReader brUserInput = new BufferedReader(
        new InputStreamReader(System.in));

     String sCommand = "h";
     sbUserMessage.setLength(0);
     String sHelpMessage = new String(
        "Commands; \n" +
        " p - play the current sound \n" +
        " n - play the next sound \n" +
        " s - show download information for the current sound \n" +
        " d - show the data record \n" +
        " a - show information for all sounds downloaded \n" +
        " l - \n" +
        " q - quit \n" +
        " h - help, show this message \n");

     //----------------------------------
     //-- the command loop
     //--
     while (!sCommand.equals("q"))
     {
       //--------------------------------
       if (sCommand.equals("p") || sCommand.equals(""))
       {
         sdCurrent.getSoundObject().play();               
       }

       //--------------------------------
       if (sCommand.equals("n"))
       {
         if (!ee.hasMoreElements())
         {
           ee = soundDownloads.elements();
         }

         sdCurrent = (SoundDownload)ee.nextElement();
         sdCurrent.getSoundObject().play();
       }

       //--------------------------------
       if (sCommand.equals("s"))
       {
         System.out.println(sdCurrent);               
       }

       //--------------------------------
       if (sCommand.equals("d"))
       {
         System.out.println(sdCurrent.getRecord());               
       }

       //--------------------------------
       if (sCommand.equals("l"))
       {
         soundDownloads = dmTest.getGoodDownloads();
         System.out.println("loaded=" + soundDownloads.size());
         ee = soundDownloads.elements();
         sdCurrent = (SoundDownload)ee.nextElement();
       }

       //--------------------------------
       // 
       if (sCommand.equals("s"))
       {
         System.out.println(dmTest.printStatistics());               
       }

       //--------------------------------
       if (sCommand.equals("help") || sCommand.equals("h"))
       {
         System.out.println(sHelpMessage);               
       }

       System.out.print(">");
       sCommand = brUserInput.readLine();
     } //-- while


     System.out.println(dmTest.printStatistics());
     System.out.println(dmTest.toString());
      
  
  } //-- main()
} //-- Practice class