#include "palettesscanpopup.h"

#include "toonzqt/gutil.h"

#include "tsystem.h"

#include <qpushbutton></qpushbutton>

#include <qlabel></qlabel>

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

/*! \class PalettesScanPopup

                \brief The PalettesScanPopup class provides a modal dialog to

   import

                                         palette in StudioPalette folder.

                Inherits \b Dialog.

                This object is composed of three sub-object: a \b FileField to

   choose a

                folder, a label \b QLabel, generally empty, to show palette

   folder during

                them import, and a button bar to start import or cancel command.

                The class provides a method, \b setCurrentFolder(TFilePath

   path), to set

                folder wherein import palettes.

                Protected function allows to manage palette import.

*/

PalettesScanPopup::PalettesScanPopup()

    : Dialog(0, true, true, "PalettesScan")

    , m_folderPath(TFilePath())

    , m_timerId(0) {

  setWindowTitle(tr("Search for Palettes"));

  setFixedWidth(250);

  m_field = new DVGui::FileField();

  addWidget(m_field);

  m_label = new QLabel();

  m_label->setFixedWidth(200);

  addWidget(m_label);

  QPushButton *okBtn = new QPushButton(tr("Ok"), this);

  okBtn->setDefault(true);

  QPushButton *cancelBtn = new QPushButton(tr("Cancel"), this);

  connect(okBtn, SIGNAL(clicked()), this, SLOT(onOkBtnClicked()));

  connect(cancelBtn, SIGNAL(clicked()), this, SLOT(reject()));

  addButtonBarWidget(okBtn, cancelBtn);

}

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

/*! Set current folder path to \b path.

*/

void PalettesScanPopup::setCurrentFolder(TFilePath path) {

  m_folderPath = path;

}

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

/*! Return current folder path.

*/

TFilePath PalettesScanPopup::getCurrentFolder() { return m_folderPath; }

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

/*! Start palette import. Add \b FileField path to directories stack and start

                a timer.

*/

void PalettesScanPopup::onOkBtnClicked() {

  m_timerId = startTimer(3);

  TFilePathSet fps;

  std::wstring s = m_field->getPath().toStdWString();

  int i = 0, len = s.length();

  while (i < len) {

    while (i < len && (s[i] == ' ' || s[i] == '\t')) i++;

    if (i >= len) break;

    int j = i;

    while (j < len && s[j] != ',') j++;

    int k = j;

    while (k > i && (s[k - 1] == ' ' || s[k - 1] == '\t')) k--;

    std::wstring token = s.substr(i, k - i);

    fps.push_back(TFilePath(token));

    i = j + 1;

  }

  push(fps);

}

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

/*! Set label text to path \b fp.

*/

void PalettesScanPopup::setLabel(const TFilePath &fp) {

  QString elideStr =

      elideText(toQString(fp), m_label->font(), m_label->width());

  m_label->setText(elideStr);

}

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

/*! Proceed in palette import recalling \b step(); if step() return false

                stop timer, clear directories stack, and close popup sending

   accept event.

*/

void PalettesScanPopup::timerEvent(QTimerEvent *event) {

  bool ret = step();

  if (!ret) {

    killTimer(m_timerId);

    clearStack();

    QDialog::accept();

  }

}

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

/*! Push TFilePath \b fp to the top of directories stack. Set label text to fp.

*/

void PalettesScanPopup::push(const TFilePath &fp) {

  setLabel(fp);

  Directory *dir = new Directory();

  m_stack.push_back(dir);

  dir->m_path  = fp;

  dir->m_files = TSystem::readDirectory(fp);

  dir->m_it    = dir->m_files.begin();

}

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

/*! Push TFilePathSet \b fs to the top of directories stack. Set label text to

                "<files>".</files>

*/

void PalettesScanPopup::push(const TFilePathSet &fs) {

  m_label->setText(tr("<files>"));</files>

  Directory *dir = new Directory();

  m_stack.push_back(dir);

  dir->m_path  = TFilePath();

  dir->m_files = fs;

  dir->m_it    = dir->m_files.begin();

}

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

/*! Removes the top item from the stack. If stack is empty return immediately.

*/

void PalettesScanPopup::pop() {

  if (m_stack.empty()) return;

  Directory *dir = m_stack.back();

  delete dir;

  m_stack.pop_back();

  if (!m_stack.empty()) {

    dir = m_stack.back();

    setLabel(dir->m_path);

  } else

    m_label->setText(tr(""));

}

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

/*! Return true if direcories stack is not empty; otherwise return false.

\n	If stack is not empty check current directory:

\li	if all files are checked recall \b pop();

\li	if its path is a directory recall \b push(const TFilePath &fp);

\li	if its path is a file check its extension and recall \b onPlt(const

TFilePath &fp).

*/

bool PalettesScanPopup::step() {

  if (m_stack.empty()) return false;

  Directory *dir = m_stack.back();

  if (dir->m_it == dir->m_files.end())

    pop();

  else {

    TFilePath fp = *(dir->m_it)++;

    if (TFileStatus(fp).isDirectory())

      push(fp);

    else {

      setLabel(fp);

      std::string ext = fp.getType();

      if (ext == "plt" || ext == "tpl" || ext == "pli") onPlt(fp);

    }

  }

  return true;

}

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

/*! Resets the content of the directories stack and set label text empty.

*/

void PalettesScanPopup::clearStack() {

  for (int i = 0; i < (int)m_stack.size(); i++) delete m_stack[i];

  m_stack.clear();

  m_label->setText(tr(""));

}

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

/*! Import palette, defined in path \b fp, in current \b StudioPalette folder.

*/

void PalettesScanPopup::onPlt(const TFilePath &fp) {

  TFilePath root(m_field->getPath().toStdString());

  assert(root.isAncestorOf(fp));

  TFilePath q = fp.getParentDir() - root;

  StudioPalette::instance()->importPalette(m_folderPath + q, fp);

}