/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: ...
   co-programmer: ...
*/

//#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_

#include "shell_input.h"

#include "text_engine.h"

#include "shell_command.h"
#include "debug.h"
#include "list.h"
#include "compiler.h"
#include "stdlibincl.h"

using namespace std;


/**
 * standard constructor
 * @todo this constructor is not jet implemented - do it
*/
ShellInput::ShellInput ()
{
  this->pressedKey = SDLK_FIRST;

  this->inputLine = new char[1];
  this->inputLine[0] = '\0';
  this->inputHistory = new tList<char>;
}

/**
 * standard deconstructor
*/
ShellInput::~ShellInput ()
{
  // delete what has to be deleted here
}

/**
 * sets the Repeate-delay and rate
 * @param repeatDelay the Delay it takes, to repeate a key
 * @param repeatRate the rate to repeate a pressed key
 */
void ShellInput::setRepeatDelay(float repeatDelay, float repeatRate)
{
  this->repeatDelay = repeatDelay;
  this->repeatRate = repeatRate;

}

/**
 * deletes the InputLine
 */
void ShellInput::flush()
{
  if (likely(this->inputLine != NULL))
  {
    delete[] this->inputLine;
  }
  this->inputLine = new char[1];
  *this->inputLine = '\0';
  this->setText(this->inputLine, true);
}

/**
 * adds one character to the inputLine
 * @param character the character to add to the inputLine
 */
void ShellInput::addCharacter(char character)
{
  char* addCharLine = new char[strlen(inputLine)+2];

  sprintf(addCharLine, "%s%c", this->inputLine, character);
  delete this->inputLine;
  this->inputLine = addCharLine;
  this->setText(inputLine, true);
}

/**
 * adds multiple Characters to thr inputLine
 * @param characters a \\0 terminated char-array to add to the InputLine
 */
void ShellInput::addCharacters(const char* characters)
{
  char* addCharLine = new char[strlen(inputLine)+strlen(characters)+1];

  sprintf(addCharLine, "%s%s", this->inputLine, characters);
  delete this->inputLine;
  this->inputLine = addCharLine;
  this->setText(inputLine, true);
}

/**
 * removes characterCount characters from the InputLine
 * @param characterCount the count of Characters to remove from the input Line
 */
void ShellInput::removeCharacters(unsigned int characterCount)
{
  if (strlen(this->inputLine) == 0)
    return;

  if (characterCount > strlen(this->inputLine))
    characterCount = strlen(this->inputLine);

  char* removeCharLine = new char[strlen(inputLine)-characterCount+1];

  strncpy(removeCharLine, this->inputLine, strlen(inputLine)-characterCount);
  removeCharLine[strlen(inputLine)-characterCount] = '\0';
  delete this->inputLine;
  this->inputLine = removeCharLine;
  this->setText(inputLine, true);
}

/**
 * executes the command stored in the inputLine
 * @return true if the command was commited successfully, false otherwise
 */
bool ShellInput::executeCommand()
{
  ShellBuffer::addBufferLineStatic("Execute Command: %s\n", this->inputLine);

  char* newCommand = new char[strlen(this->inputLine)+1];
  strcpy(newCommand, this->inputLine);
  this->inputHistory->add(newCommand);

  ShellCommandBase::execute(this->inputLine);

  this->flush();

  return false;
}