package art.servers.etdserver.protocols.diamond;

import art.library.utils.common.*;

public class Diamond_Message
{
    private String data;
    private byte[] databytes;
    private int[] dataints;
    private int pointer = 0;


    public void setData(byte[] input)
    {
        data = new String(input);
        databytes = input;
        dataints = ArrayUtils.toIntArray(databytes);
    }


    public void setData(byte[] input, byte[] command)
    {
        byte[] aux = new byte[input.length-command.length];
        System.arraycopy(input, command.length, aux, 0, aux.length);
        data = new String(aux);
        databytes = aux;
        dataints = ArrayUtils.toIntArray(databytes);
    }


    public void setData(int[] input)
    {
        data = IntToString(input);
        dataints = input;
        databytes = ArrayUtils.toByteArray(dataints);
    }


    public void setData(String input)
    {
        data = input;
        databytes = input.getBytes();
        dataints = ArrayUtils.toIntArray(databytes);
    }


    public void reset ()
    {
        pointer = 0;
    }


    public int length ()
    {
        return(dataints.length);
    }


    public void checkCommand(byte[] response, byte[] command) throws Exception
    {
        String s1 = new String(response);
        String s2 = new String(command);
        if (s1.indexOf(s2) < 0) throw new Exception("Response erroneous");
    }


    public void checkError() throws Exception
    {
        int indexError = data.indexOf("ERR#");
        if (indexError > -1)
        {
            int errorCode = Integer.parseInt(data.substring(indexError+4, indexError+6), 16);

            // TODO Check Diamond Error Code received
        }
    }


    public String getString (int length)
    {
        String resultado = data.substring(pointer, pointer + length);
        pointer = pointer + length;
        return resultado;
    }



    public int get1X()
    {
        return getX(1);
    }


    public int get2X()
    {
        return getX(2);
    }

    public int get4X()
    {
        return getX(4);
    }
    

    public int get4Xr()
    {
        int valor = getX(4);
        return ((valor >> 8) & 0xFF) + ((valor << 8) & 0xFF00);
    }    
    

    public int get6X()
    {
        return getX(6);
    }

    public int get8X()
    {
        return getX(8);
    }


    public int getX(int length)
    {
        int resultado = Integer.parseInt(data.substring(pointer, pointer + length), 16);
        pointer = pointer + length;
        return resultado;
    }


    public int get1I()
    {
        return getI(1);
    }

    public int get2I()
    {
        return getI(2);
    }


    public int get4I()
    {
        return getI(4);
    }


    private int getI(int length)
    {
        int result = Integer.parseInt(data.substring(pointer, pointer + length));
        pointer = pointer + length;
        return result;
    }


    public void skip (int longitud)
    {
        pointer = pointer + longitud;
    }



    public String getResponseString()
    {
       return data;
    }


    public byte[] getDataByte()
    {
       return databytes;
    }


    public int[] getDataInt()
    {
       return dataints;
    }


    public static String IntToString (int[] command, int start)
    {
       byte[] str = new byte[command.length - start];

       int apuntador = 0;

       for (int i=start; i<command.length; i++)
       {
          str[apuntador++] = (byte)command[i];
       }

       return new String(str);
    }




    public static String IntToString (int[] command)
    {
       byte[] str = new byte[command.length];

       for (int i=0; i<command.length; i++)
       {
          str[i] = (byte)command[i];
       }

       return new String(str);
    }

}