/*
   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: Patrick Boenzli
*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_IMPORTER

#include "md3_animation_cfg.h"

#include "md3_animation.h"

#include "tokenizer.h"
#include "helper_functions.h"

#include "debug.h"

#include <stdio.h>
#include <stdlib.h>


using namespace std;

namespace md3
{

  /**
   * create an empty MD3AnimationCfg object
   */
  MD3AnimationCfg::MD3AnimationCfg()
  {
  }


  /**
   * create a new MD3 Anumation object and initialize it with the data on the given line
   * @param line: the line to read from
   */
  MD3AnimationCfg::MD3AnimationCfg(std::string filename)
  {


    this->loadConfig(filename);
  }


  /**
   * deconstructor
   */
  MD3AnimationCfg::~MD3AnimationCfg()
  {}


  /**
   * loads the configuration file
   */
  void MD3AnimationCfg::loadConfig(std::string filename)
  {
//     BufferedReader bin=new BufferedReader(new InputStreamReader(in));

    int      i = 0;                //!< last read animation, animation order is hard coded!
    int      torsoOffset = -1;     //!< torso offset
    int      firstTorsoFrame = -1; //!< first of the TORSO animation frames
    bool     inHeader = true;      //!< are we still in the header of the .cfg file?


    FILE* pFile;
    char* cLine;
    size_t len = 0;
    ssize_t read = 0;

    PRINTF(0)("opening file: %s\n", filename.c_str());
    pFile = fopen(filename.c_str(), "r");
    if( !pFile) {
      PRINTF(1)("Error: file could not be opened: %s\n", filename.c_str());
      return;
    }


    // parse file
    while( (read = getline(&cLine, &len, pFile)) != -1) { /*( !this->dataStream.eof()) {*/
      std::string line(cLine);

//       PRINTF(0)("size = %i, line = |%s|\n", read, line.c_str());

      //ignore empty lines and comments
      if( line.length() > 2 && line.find("//") != 0) {

        // find the gender section
        if( inHeader && line.find("sex") == 0) {
          //parse line: sex [m | f | ...]
          std::vector<std::string> tokens;
          Tokenizer::tokenize(line, tokens, " \t\n\r\f/");

          std::string sexStr = tokens.back();
          // probably error in the file format
          if( sexStr.length() != 1) {
            this->sex = '?';
            PRINTF(2)("no section \"sex\" in the config file %s found\n", filename.c_str());
          }
          else {
            this->sex = sexStr[0];
          }

          PRINTF(0)("sex of the md3 model: %c\n", this->sex);
        }
        else if( inHeader && line.find("headoffset") == 0) {
          // parse line: headoffset X Y Z
          std::vector<std::string> tokens;
          Tokenizer::tokenize(line, tokens, " \t\n\r\f/");

          float z = atof(tokens.back().c_str()); tokens.pop_back();
          float y = atof(tokens.back().c_str()); tokens.pop_back();
          float x = atof(tokens.back().c_str()); tokens.pop_back();

          this->headOffset = Vector(x, y, z);

          PRINTF(0)("got head offset: %f, %f, %f\n", x, y, z);
        }
        else if( inHeader && line.find("footsteps") == 0) {
          //parse line: footsteps [normal | mech | ...]
          std::vector<std::string> tokens;
          Tokenizer::tokenize(line, tokens, " \t\n\r\f/");

          this->footsteps = tokens.back();

          //check if value is ok
          if (!(nocaseCmp(this->footsteps, "default")   ||
                nocaseCmp(this->footsteps, "normal")    ||
                nocaseCmp(this->footsteps, "boot")      ||
                nocaseCmp(this->footsteps, "flesh")     ||
                nocaseCmp(this->footsteps, "mech")      ||
                nocaseCmp(this->footsteps, "energy")) ) {
            this->footsteps="illegal footsteps value (" + this->footsteps + ")";
          }
          PRINTF(0)("got footsteps: %s\n", this->footsteps.c_str());
        }
        else
        {
          // assume it's an animation line
          inHeader = false;

          MD3Animation* animation = new MD3Animation();
          this->loadAnimation(animation, line);

          if( i < 25)
          {
            animation->name = MD3Animation::animationList[i].animationName;
            animation->type = MD3Animation::animationList[i++].animationType;
          }

          // workaround for strange numbering in animation.cfg: skip TORSO frames
          // for LEGS animation lines...
          if( animation->type == LEGS)
          {
            //when first LEGS animation is found, calc # of TORSO frames
            if( torsoOffset == -1)
              torsoOffset = animation->first - firstTorsoFrame;

            animation->first -= torsoOffset;
            animation->offset = torsoOffset;
          }
          else if( animation->type == TORSO)
            if( firstTorsoFrame == -1)
              firstTorsoFrame = animation->first;

          this->putAnimation(animation);
        }
      }
    }
  }


  /**
   * loading the animation data itself
   */
  void MD3AnimationCfg::loadAnimation(MD3Animation* anim, std::string line)
  {
    // parse the line:
    // first frame, num frames, looping frames, frames per second (fps)
    std::vector<std::string> tokens;
    Tokenizer::tokenize(line, tokens, " \t\n\r\f/");

    anim->fps = atoi(tokens.back().c_str()); tokens.pop_back();
    anim->numLoopFrames = atoi(tokens.back().c_str()); tokens.pop_back();
    anim->numFrames = atoi(tokens.back().c_str()); tokens.pop_back();
    anim->first = atoi(tokens.back().c_str()); tokens.pop_back();

    //some adjustements:
    if( anim->fps == 0)
      anim->fps = 33;

    PRINTF(0)("Animation: first frame: %i, num frames: %i, num loops: %i, fps: %i\n", anim->first, anim->numFrames, anim->numLoopFrames, anim->fps);
  }


  /**
  * Look up the animation data for the animation with the specified name.
  *
  * @param name Name of the animation.
  * @return The animation data associated with the name or null if no data was found.
  */
  MD3Animation* MD3AnimationCfg::getAnimation(std::string name)
  {
    return this->animations[name];
  }


  /**
   * Add the specified animation to the list of known animations.
   */
   void MD3AnimationCfg::putAnimation(MD3Animation* anim)
   {
      this->animations[anim->name] = anim;
   }


}