/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   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
 *   of the License, or (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Reto Grieder
 *   Co-authors:
 *      ...
 *
 */

/**
 @file
 @brief Implementation of the different input handlers.
 */

#include "InputHandler.h"
#include "util/Convert.h"
#include "Debug.h"
#include "ConfigValueIncludes.h"
#include "CoreIncludes.h"
#include "CommandExecutor.h"

namespace orxonox
{
  // ###############################
  // ######     KeyBinder     ######
  // ###############################

  /**
    @brief Constructor that does as little as necessary.
  */
  KeyBinder::KeyBinder()
  {
    RegisterObject(KeyBinder);
    clearBindings();

    std::string keyNames[] = {
    "UNASSIGNED",
    "ESCAPE",
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "0",
    "MINUS",
    "EQUALS",
    "BACK",
    "TAB",
    "Q",
    "W",
    "E",
    "R",
    "T",
    "Y",
    "U",
    "I",
    "O",
    "P",
    "LBRACKET",
    "RBRACKET",
    "RETURN",
    "LCONTROL",
    "A",
    "S",
    "D",
    "F",
    "G",
    "H",
    "J",
    "K",
    "L",
    "SEMICOLON",
    "APOSTROPHE",
    "GRAVE",
    "LSHIFT",
    "BACKSLASH",
    "Z",
    "X",
    "C",
    "V",
    "B",
    "N",
    "M",
    "COMMA",
    "PERIOD",
    "SLASH",
    "RSHIFT",
    "MULTIPLY",
    "LMENU",
    "SPACE",
    "CAPITAL",
    "F1",
    "F2",
    "F3",
    "F4",
    "F5",
    "F6",
    "F7",
    "F8",
    "F9",
    "F10",
    "NUMLOCK",
    "SCROLL",
    "NUMPAD7",
    "NUMPAD8",
    "NUMPAD9",
    "SUBTRACT",
    "NUMPAD4",
    "NUMPAD5",
    "NUMPAD6",
    "ADD",
    "NUMPAD1",
    "NUMPAD2",
    "NUMPAD3",
    "NUMPAD0",
    "DECIMAL",
    "","",
    "OEM_102",
    "F11",
    "F12",
    "","","","","","","","","","","",
    "F13",
    "F14",
    "F15",
    "","","","","","","","","","",
    "KANA",
    "","",
    "ABNT_C1",
    "","","","","",
    "CONVERT",
    "",
    "NOCONVERT",
    "",
    "YEN",
    "ABNT_C2",
    "","","","","","","","","","","","","","",
    "NUMPADEQUALS",
    "","",
    "PREVTRACK",
    "AT",
    "COLON",
    "UNDERLINE",
    "KANJI",
    "STOP",
    "AX",
    "UNLABELED",
    "NEXTTRACK",
    "","",
    "NUMPADENTER",
    "RCONTROL",
    "","",
    "MUTE",
    "CALCULATOR",
    "PLAYPAUSE",
    "",
    "MEDIASTOP",
    "","","","","","","","","",
    "VOLUMEDOWN",
    "",
    "VOLUMEUP",
    "",
    "WEBHOME",
    "NUMPADCOMMA",
    "",
    "DIVIDE",
    "",
    "SYSRQ",
    "RMENU",
    "","","","","","","","","","","","",
    "PAUSE",
    "",
    "HOME",
    "UP",
    "PGUP",
    "",
    "LEFT",
    "",
    "RIGHT",
    "",
    "END",
    "DOWN",
    "PGDOWN",
    "INSERT",
    "DELETE",
    "","","","","","","",
    "LWIN",
    "RWIN",
    "APPS",
    "POWER",
    "SLEEP",
    "","","",
    "WAKE",
    "",
    "WEBSEARCH",
    "WEBFAVORITES",
    "WEBREFRESH",
    "WEBSTOP",
    "WEBFORWARD",
    "WEBBACK",
    "MYCOMPUTER",
    "MAIL",
    "MEDIASELECT"
    };
    for (int i = 0; i < numberOfKeys_s; i++)
      keyNames_[i] = keyNames[i];

    std::string mouseButtonNames[] = {
      "MouseLeft", "MouseRight", "MouseMiddle",
      "MouseButton3", "MouseButton4", "MouseButton5",
      "MouseButton6", "MouseButton7" };
    for (int i = 0; i < numberOfMouseButtons_s; i++)
      mouseButtonNames_[i] = mouseButtonNames[i];

    for (int i = 0; i < numberOfJoyStickButtons_s; i++)
      joyStickButtonNames_[i] = "JoyStick" + getConvertedValue<int, std::string>(i);
  }

  /**
    @brief Destructor
  */
  KeyBinder::~KeyBinder()
  {
  }

  /**
    @brief Loader for the key bindings, managed by config values.
  */
  void KeyBinder::setConfigValues()
  {
    ConfigValueContainer* cont;
    std::string modes[] = {"P_", "R_", "H_"};

    // keys
    for (int i = 0; i < numberOfKeys_s; i++)
    {
      for (int j = 0; j < 3; j++)
      {
        cont = getIdentifier()->getConfigValueContainer(modes[j] + keyNames_[i]);
        if (!cont)
        {
          cont = new ConfigValueContainer(CFT_Keybindings, getIdentifier(), modes[j] + keyNames_[i], "");
          getIdentifier()->addConfigValueContainer(modes[j] + keyNames_[i], cont);
        }
        switch (j)
        {
          case 0:
            cont->getValue(&bindingsKeyPress_[i].commandStr);
            break;
          case 1:
            cont->getValue(&bindingsKeyRelease_[i].commandStr);
            break;
          case 2:
            cont->getValue(&bindingsKeyHold_[i].commandStr);
        }
      }
    }

    // mouse buttons
    for (int i = 0; i < numberOfMouseButtons_s; i++)
    {
      for (int j = 0; j < 3; j++)
      {
        cont = getIdentifier()->getConfigValueContainer(modes[j] + mouseButtonNames_[i]);
        if (!cont)
        {
          cont = new ConfigValueContainer(CFT_Keybindings, getIdentifier(), modes[j] + mouseButtonNames_[i], "");
          getIdentifier()->addConfigValueContainer(modes[j] + mouseButtonNames_[i], cont);
        }
        switch (j)
        {
          case 0:
            cont->getValue(&bindingsMouseButtonPress_[i].commandStr);
            break;
          case 1:
            cont->getValue(&bindingsMouseButtonRelease_[i].commandStr);
            break;
          case 2:
            cont->getValue(&bindingsMouseButtonHold_[i].commandStr);
        }
      }
    }

    // joy stick buttons
    for (int i = 0; i < numberOfJoyStickButtons_s; i++)
    {
      for (int j = 0; j < 3; j++)
      {
        cont = getIdentifier()->getConfigValueContainer(modes[j] + joyStickButtonNames_[i]);
        if (!cont)
        {
          cont = new ConfigValueContainer(CFT_Keybindings, getIdentifier(), modes[j] + joyStickButtonNames_[i], "");
          getIdentifier()->addConfigValueContainer(modes[j] + joyStickButtonNames_[i], cont);
        }
        switch (j)
        {
          case 0:
            cont->getValue(&bindingsJoyStickButtonPress_[i].commandStr);
            break;
          case 1:
            cont->getValue(&bindingsJoyStickButtonRelease_[i].commandStr);
            break;
          case 2:
            cont->getValue(&bindingsJoyStickButtonHold_[i].commandStr);
        }
      }
    }
  }

  /**
    @brief Overwrites all bindings with ""
  */
  void KeyBinder::clearBindings()
  {
    for (int i = 0; i < numberOfKeys_s; i++)
    {
      bindingsKeyPress_  [i].commandStr = "";
      bindingsKeyRelease_[i].commandStr = "";
      bindingsKeyHold_   [i].commandStr = "";
    }
    for (int i = 0; i < numberOfMouseButtons_s; i++)
    {
      bindingsMouseButtonPress_  [i].commandStr = "";
      bindingsMouseButtonRelease_[i].commandStr = "";
      bindingsMouseButtonHold_   [i].commandStr = "";
    }
    for (int i = 0; i < numberOfJoyStickButtons_s; i++)
    {
      bindingsJoyStickButtonPress_  [i].commandStr = "";
      bindingsJoyStickButtonRelease_[i].commandStr = "";
      bindingsJoyStickButtonHold_   [i].commandStr = "";
    }
  }

  /**
    @brief Loads the key and button bindings.
    @return True if loading succeeded.
  */
  bool KeyBinder::loadBindings()
  {
    COUT(ORX_DEBUG) << "KeyBinder: Loading key bindings..." << std::endl;

    ConfigFileManager::getSingleton()->setFile(CFT_Keybindings, "keybindings.ini");
    setConfigValues();

    // evaluate the key bindings
    // TODO: what if binding is invalid?
    for (int i = 0; i < numberOfKeys_s; i++)
    {
      if (bindingsKeyPress_[i].commandStr != "")
      {
        bindingsKeyPress_[i].evaluation = CommandExecutor::evaluate(bindingsKeyPress_[i].commandStr);
        bindingsKeyPress_[i].commandStr = bindingsKeyPress_[i].evaluation.getCommandString();
      }
    }

    COUT(ORX_DEBUG) << "KeyBinder: Loading key bindings done." << std::endl;
    return true;
  }

  bool KeyBinder::executeSimpleBinding(KeyBinding& binding)
  {
    if (binding.commandStr != "")
    {
      if (binding.commandStr != binding.evaluation.getCommandString())
      {
        // key binding has changed, reevaluate the command string.
        binding.evaluation = CommandExecutor::evaluate(binding.commandStr);
        binding.commandStr = binding.evaluation.getCommandString();
      }
      COUT(3) << "Executing command: " << binding.commandStr << std::endl;
      CommandExecutor::execute(binding.commandStr);
    }

    return true;
  }


  /**
    @brief Event handler for the keyPressed Event.
    @param e Event information
  */
  bool KeyBinder::keyPressed(const KeyEvent& evt)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsKeyPress_[int(evt.key)]);

    return true;
  }

  /**
    @brief Event handler for the keyReleased Event.
    @param e Event information
  */
  bool KeyBinder::keyReleased(const KeyEvent& evt)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsKeyRelease_[int(evt.key)]);

    return true;
  }

  /**
    @brief Event handler for the keyHeld Event.
    @param e Mouse state information
  */
  bool KeyBinder::keyHeld(const KeyEvent& evt)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsKeyHold_[int(evt.key)]);

    return true;
  }

  /**
    @brief Event handler for the mouseMoved Event.
    @param e Mouse state information
  */
  bool KeyBinder::mouseMoved(const MouseState &evt)
  {
    /*if (bindingMouseMoved_.commandStr != "")
    {
      if (bindingMouseMoved_.commandStr != bindingMouseMoved_.evaluation.getCommandString())
      {
        // key binding has changed, reevaluate the command string.
        bindingMouseMoved_.evaluation = CommandExecutor::evaluate(bindingMouseMoved_.commandStr);
        bindingMouseMoved_.commandStr = bindingMouseMoved_.evaluation.getCommandString();
      }
      COUT(3) << "Executing command: " << bindingMouseMoved_.commandStr << std::endl;

      bindingMouseMoved_.evaluation.setEvaluatedParameter(
      CommandExecutor::execute(bindingMouseMoved_.commandStr);
    }*/

    return true;
  }

  /**
    @brief Event handler for the mouseScrolled Event.
    @param e Mouse state information
  */
  bool KeyBinder::mouseScrolled(const MouseState &evt)
  {
    return true;
  }

  /**
    @brief Event handler for the mousePressed Event.
    @param e Event information
    @param id The ID of the mouse button
  */
  bool KeyBinder::mouseButtonPressed(const MouseState& state, MouseButton::Enum id)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsMouseButtonPress_[int(id)]);

    return true;
  }

  /**
    @brief Event handler for the mouseReleased Event.
    @param e Event information
    @param id The ID of the mouse button
  */
  bool KeyBinder::mouseButtonReleased(const MouseState& state, MouseButton::Enum id)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsMouseButtonRelease_[int(id)]);

    return true;
  }

  /**
    @brief Event handler for the mouseHeld Event.
    @param e Event information
    @param id The ID of the mouse button
  */
  bool KeyBinder::mouseButtonHeld(const MouseState& state, MouseButton::Enum id)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsMouseButtonHold_[int(id)]);

    return true;
  }

  bool KeyBinder::joyStickButtonPressed(const JoyStickState& state, int button)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsJoyStickButtonPress_[button]);

    return true;
  }

  bool KeyBinder::joyStickButtonReleased(const JoyStickState& state, int button)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsJoyStickButtonRelease_[button]);

    return true;
  }

  bool KeyBinder::joyStickButtonHeld(const JoyStickState& state, int button)
  {
    // find the appropriate key binding
    executeSimpleBinding(bindingsJoyStickButtonHold_[button]);

    return true;
  }

  bool KeyBinder::joyStickAxisMoved(const JoyStickState& state, int axis)
  {
    return true;
  }

  bool KeyBinder::joyStickSliderMoved(const JoyStickState& state, int index)
  {
    return true;
  }

  bool KeyBinder::joyStickPovMoved(const JoyStickState& state, int index)
  {
    return true;
  }

  bool KeyBinder::joyStickVector3Moved(const JoyStickState& state, int index)
  {
    return true;
  }



  // ###############################
  // ###     GUIInputHandler     ###
  // ###############################

  ///**
  //  @brief standard constructor
  //*/
  //GUIInputHandler::GUIInputHandler()
  //{
  //}

  ///**
  //  @brief Destructor
  //*/
  //GUIInputHandler::~GUIInputHandler()
  //{
  //}

  ///**
  //  @brief Event handler for the keyPressed Event.
  //  @param e Event information
  //*/
  //bool GUIInputHandler::keyPressed(const OIS::KeyEvent &e)
  //{
    ////CEGUI::System::getSingleton().injectKeyDown( arg.key );
    ////CEGUI::System::getSingleton().injectChar( arg.text );
  //  return true;
  //}

  ///**
  //  @brief Event handler for the keyReleased Event.
  //  @param e Event information
  //*/
  //bool GUIInputHandler::keyReleased(const OIS::KeyEvent &e)
  //{
    ////CEGUI::System::getSingleton().injectKeyUp( arg.key );
  //  return true;
  //}

  ///**
  //  @brief Event handler for the mouseMoved Event.
  //  @param e Event information
  //*/
  //bool GUIInputHandler::mouseMoved(const OIS::MouseEvent &e)
  //{
    ////CEGUI::System::getSingleton().injectMouseMove( arg.state.X.rel, arg.state.Y.rel );
  //  return true;
  //}

  ///**
  //  @brief Event handler for the mousePressed Event.
  //  @param e Event information
  //  @param id The ID of the mouse button
  //*/
  //bool GUIInputHandler::mousePressed(const OIS::MouseEvent &e, OIS::MouseButton id)
  //{
    ////CEGUI::System::getSingleton().injectMouseButtonDown(convertOISMouseButtonToCegui(id));
  //  return true;
  //}

  ///**
  //  @brief Event handler for the mouseReleased Event.
  //  @param e Event information
  //  @param id The ID of the mouse button
  //*/
  //bool GUIInputHandler::mouseReleased(const OIS::MouseEvent &e, OIS::MouseButton id)
  //{
    ////CEGUI::System::getSingleton().injectMouseButtonUp(convertOISMouseButtonToCegui(id));
  //  return true;
  //}

}