// TnzCore includes

#include "tsystem.h"

#include "tiio.h"

#include "tcontenthistory.h"

#include "tconvert.h"

// STD includes

#include <map></map>

// Qt includes

#include <qdir></qdir>

#include "tlevel_io.h"

using namespace std;

DEFINE_CLASS_CODE(TLevelReader, 8)

DEFINE_CLASS_CODE(TLevelWriter, 9)

// DEFINE_CLASS_CODE(TLevelReaderWriter, 25)  //brutto

//-----------------------------------------------------------

typedef std::pair<qstring, int=""> LevelReaderKey;</qstring,>

std::map<levelreaderkey, *="" tlevelreadercreateproc=""> LevelReaderTable;</levelreaderkey,>

std::map<qstring, *,="" bool="" std::pair<tlevelwritercreateproc="">> LevelWriterTable;</qstring,>

// std::map<std::string, tlevelreaderwritercreateproc*=""> LevelReaderWriterTable;</std::string,>

//-----------------------------------------------------------

TLevelReader::TLevelReader(const TFilePath &path)

    : TSmartObject(m_classCode)

    , m_info(0)

    , m_path(path)

    , m_contentHistory(0)

    , m_frameFormat(TFrameId::FOUR_ZEROS) {}

//-----------------------------------------------------------

TLevelReader::~TLevelReader() {

  delete m_contentHistory;

  delete m_info;

}

//-----------------------------------------------------------

TLevelReaderP::TLevelReaderP(const TFilePath &path, int reader) {

  QString extension = QString::fromStdString(toLower(path.getType()));

  LevelReaderKey key(extension, reader);

  std::map<levelreaderkey, *="" tlevelreadercreateproc="">::iterator it;</levelreaderkey,>

  it = LevelReaderTable.find(key);

  if (it != LevelReaderTable.end()) {

    m_pointer = it->second(path);

    assert(m_pointer);

  } else {

    m_pointer = new TLevelReader(path);

  }

  m_pointer->addRef();

}

//-----------------------------------------------------------

namespace {

bool myLess(const TFilePath &l, const TFilePath &r) {

  return l.getFrame() < r.getFrame();

}

}

//-----------------------------------------------------------

const TImageInfo *TLevelReader::getImageInfo(TFrameId fid) {

  if (m_info)

    return m_info;

  else {

    TImageReaderP frameReader = getFrameReader(fid);

    if (!frameReader) return 0;

    const TImageInfo *fInfo = frameReader->getImageInfo();

    if (!fInfo) return 0;

    m_info = new TImageInfo(*fInfo);

    if (m_info->m_properties)

      m_info->m_properties = m_info->m_properties->clone();

    return m_info;

  }

}

//-----------------------------------------------------------

const TImageInfo *TLevelReader::getImageInfo() {

  if (m_info) return m_info;

  TLevelP level = loadInfo();

  if (level->getFrameCount() == 0) return 0;

  return getImageInfo(level->begin()->first);

}

//-----------------------------------------------------------

TLevelP TLevelReader::loadInfo() {

  TFilePath parentDir = m_path.getParentDir();

  TFilePath levelName(m_path.getLevelName());

  //  cout << "Parent dir = '" << parentDir << "'" << endl;

  //  cout << "Level name = '" << levelName << "'" << endl;

  TFilePathSet files;

  try {

    files = TSystem::readDirectory(parentDir, false, true, true);

  } catch (...) {

    throw TImageException(m_path, "unable to read directory content");

  }

  TLevelP level;

  vector<tfilepath> data;</tfilepath>

  for (TFilePathSet::iterator it = files.begin(); it != files.end(); it++) {

    TFilePath ln(it->getLevelName());

    // cout << "try " << *it << "  " << it->getLevelName() <<  endl;

    if (levelName == TFilePath(it->getLevelName())) {

      try {

        level->setFrame(it->getFrame(), TImageP());

        data.push_back(*it);

      } catch (string msg) {

        throw msg;

      }

    }

  }

  if (!data.empty()) {

    std::vector<tfilepath>::iterator it =</tfilepath>

        std::min_element(data.begin(), data.end(), myLess);

    TFilePath fr = (*it).withoutParentDir().withName("").withType("");

    wstring ws   = fr.getWideString();

    if (ws.length() == 5) {

      if (ws.rfind(L'_') == (int)wstring::npos)

        m_frameFormat = TFrameId::FOUR_ZEROS;

      else

        m_frameFormat = TFrameId::UNDERSCORE_FOUR_ZEROS;

    } else {

      if (ws.rfind(L'_') == (int)wstring::npos)

        m_frameFormat = TFrameId::NO_PAD;

      else

        m_frameFormat = TFrameId::UNDERSCORE_NO_PAD;

    }

  } else

    m_frameFormat = TFrameId::FOUR_ZEROS;

  return level;

}

//-----------------------------------------------------------

TImageReaderP TLevelReader::getFrameReader(TFrameId fid) {

  return TImageReaderP(m_path.withFrame(fid, m_frameFormat));

}

//-----------------------------------------------------------

void TLevelReader::getSupportedFormats(QStringList &names) {

  for (std::map<levelreaderkey, *="" tlevelreadercreateproc="">::iterator it =</levelreaderkey,>

           LevelReaderTable.begin();

       it != LevelReaderTable.end(); ++it) {

    names.push_back(it->first.first);

  }

}

//-----------------------------------------------------------

TSoundTrack *TLevelReader::loadSoundTrack() { return 0; }

//===========================================================

TLevelWriter::TLevelWriter(const TFilePath &path, TPropertyGroup *prop)

    : TSmartObject(m_classCode)

    , m_path(path)

    , m_properties(prop)

    , m_contentHistory(0) {

  string ext              = path.getType();

  if (!prop) m_properties = Tiio::makeWriterProperties(ext);

}

//-----------------------------------------------------------

TLevelWriter::~TLevelWriter() {

  delete m_properties;

  delete m_contentHistory;

}

//-----------------------------------------------------------

TLevelWriterP::TLevelWriterP(const TFilePath &path, TPropertyGroup *winfo) {

  QString type = QString::fromStdString(toLower(path.getType()));

  std::map<qstring, *,="" bool="" std::pair<tlevelwritercreateproc="">>::iterator it;</qstring,>

  it = LevelWriterTable.find(type);

  if (it != LevelWriterTable.end())

    m_pointer = it->second.first(

        path,

        winfo ? winfo->clone() : Tiio::makeWriterProperties(path.getType()));

  else

    m_pointer = new TLevelWriter(

        path,

        winfo ? winfo->clone() : Tiio::makeWriterProperties(path.getType()));

  assert(m_pointer);

  m_pointer->addRef();

}

//-----------------------------------------------------------

void TLevelWriter::save(const TLevelP &level) {

  for (TLevel::Iterator it = level->begin(); it != level->end(); it++) {

    if (it->second) getFrameWriter(it->first)->save(it->second);

  }

}

//-----------------------------------------------------------

void TLevelWriter::saveSoundTrack(TSoundTrack *) {

  return;

  throw TException("The level format doesn't support soundtracks");

}

//-----------------------------------------------------------

void TLevelWriter::setFrameRate(double fps) { m_frameRate = fps; }

//-----------------------------------------------------------

void TLevelWriter::getSupportedFormats(QStringList &names,

                                       bool onlyRenderFormats) {

  for (std::map<qstring, *,="" bool="" std::pair<tlevelwritercreateproc="">>::iterator</qstring,>

           it = LevelWriterTable.begin();

       it != LevelWriterTable.end(); ++it) {

    if (!onlyRenderFormats || it->second.second) names.push_back(it->first);

  }

}

//-----------------------------------------------------------

TImageWriterP TLevelWriter::getFrameWriter(TFrameId fid) {

  TImageWriterP iw(m_path.withFrame(fid));

  iw->setProperties(m_properties);

  return iw;

}

//-----------------------------------------------------------

void TLevelWriter::setContentHistory(TContentHistory *contentHistory) {

  if (contentHistory != m_contentHistory) {

    delete m_contentHistory;

    m_contentHistory = contentHistory;

  }

}

//-----------------------------------------------------------

void TLevelWriter::renumberFids(const std::map<tframeid, tframeid=""> &table) {</tframeid,>

  typedef std::map<tframeid, tframeid=""> Table;</tframeid,>

  struct locals {

    static inline QString qstring(const TFilePath &fp) {

      return QString::fromStdWString(fp.getWideString());

    }

    static inline QString temp(const QString &str) {

      return str + QString("_");

    }

  };

  if (m_path.getDots() == "..") {

    try {

      // Extract all image file paths of the level

      QDir parentDir(

          QString::fromStdWString(m_path.getParentDir().getWideString()));

      parentDir.setFilter(QDir::Files);

      QStringList nameFilters(QString::fromStdWString(m_path.getWideName()) +

                              ".*." + QString::fromStdString(m_path.getType()));

      parentDir.setNameFilters(nameFilters);

      TFilePathSet fpset;

      TSystem::readDirectory(fpset, parentDir, false);  // Could throw

      // Traverse each file, trying to match it with a table entry

      std::vector<qstring> storedDstPaths;</qstring>

      TFilePathSet::iterator st, sEnd(fpset.end());

      for (st = fpset.begin(); st != sEnd; ++st) {

        const QString &src  = locals::qstring(*st);

        const TFrameId &fid = st->getFrame();  // Could throw ! (and I'm quite

                                               // appalled of that  o.o')

        Table::const_iterator dt(table.find(fid));

        if (dt == table.end()) {

          // The frame must be removed

          QFile::remove(src);

        } else {

          if (fid == dt->second) continue;

          // The frame must be renumbered

          const QString &dst = locals::qstring(st->withFrame(dt->second));

          if (!QFile::rename(src, dst)) {

            // Use a temporary file rename to ensure that other frames to be

            // renumbered

            // are not overwritten.

            if (QFile::rename(locals::qstring(*st), locals::temp(dst)))

              storedDstPaths.push_back(dst);

            // If the second rename did not happen, the problem was not on dst,

            // but on src.

            // Alas, it means that rename on source is not possible - skip.

          }

        }

      }

      // At this point, temporaries should be restored to originals. In case the

      // rename of one of those files cannot be finalized, leave the temporary -

      // as

      // it may be impossible to roll back (another frame could have been

      // renumbered

      // to the would-roll-back frame) !

      std::vector<qstring>::iterator dt, dEnd(storedDstPaths.end());</qstring>

      for (dt = storedDstPaths.begin(); dt != dEnd; ++dt)

        QFile::rename(locals::temp(*dt), *dt);

    } catch (...) {

      // Could not read the directory - skip silently

    }

  }

}

//============================================================

void TLevelReader::define(QString extension, int reader,

                          TLevelReaderCreateProc *proc) {

  LevelReaderKey key(extension, reader);

  LevelReaderTable[key] = proc;

  // cout << "LevelReader " << extension << " registred" << endl;

}

//-----------------------------------------------------------

void TLevelWriter::define(QString extension, TLevelWriterCreateProc *proc,

                          bool isRenderFormat) {

  LevelWriterTable[extension] =

      std::pair<tlevelwritercreateproc *,="" bool="">(proc, isRenderFormat);</tlevelwritercreateproc>

  // cout << "LevelWriter " << extension << " registred" << endl;

}