#include "toonzqt/stylenameeditor.h"

// TnzQt includes

#include "toonzqt/gutil.h"

// TnzLib includes

#include "toonz/toonzfolders.h"

#include "toonz/palettecmd.h"

#include "toonz/tpalettehandle.h"

// TnzCore includes

#include "tsystem.h"

#include "tcommon.h"

#include "tcolorstyles.h"

#include "tpalette.h"

#include <qlineedit></qlineedit>

#include <qpushbutton></qpushbutton>

#include <qhboxlayout></qhboxlayout>

#include <qvboxlayout></qvboxlayout>

#include <qgridlayout></qgridlayout>

#include <qlabel></qlabel>

#include <qscrollarea></qscrollarea>

#include <qsettings></qsettings>

#include <qmessagebox></qmessagebox>

#include <qmenu></qmenu>

#include <qcontextmenuevent></qcontextmenuevent>

#include <qframe></qframe>

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

namespace {

const int areaColCount[WORD_COLUMN_AMOUNT] = {2, 2, 1};

int indexToRow(int index, int columnId) {

  return index / areaColCount[columnId];

}

int indexToCol(int index, int columnId) {

  return index % areaColCount[columnId];

}

};  // namespace

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

NewWordDialog::NewWordDialog(QWidget* parent) {

  setModal(true);

  m_lineEdit             = new QLineEdit(this);

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

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

  // layout

  QVBoxLayout* mainLay = new QVBoxLayout();

  mainLay->setMargin(5);

  mainLay->setSpacing(5);

  {

    mainLay->addWidget(new QLabel(tr("Enter new word"), this), 0,

                       Qt::AlignLeft | Qt::AlignVCenter);

    mainLay->addWidget(m_lineEdit, 0);

    QHBoxLayout* buttonsLay = new QHBoxLayout();

    buttonsLay->setMargin(3);

    buttonsLay->setSpacing(20);

    {

      buttonsLay->addSpacing(1);

      buttonsLay->addWidget(okBtn, 0);

      buttonsLay->addWidget(cancelBtn, 0);

      buttonsLay->addSpacing(1);

    }

    mainLay->addLayout(buttonsLay);

  }

  setLayout(mainLay);

  // signal-slot connections

  bool ret = true;

  ret      = ret && connect(okBtn, SIGNAL(clicked(bool)), this, SLOT(accept()));

  ret = ret && connect(cancelBtn, SIGNAL(clicked(bool)), this, SLOT(reject()));

}

//-------

QString NewWordDialog::getName() { return m_lineEdit->text(); }

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

WordButton::WordButton(const QString& text, QWidget* parent)

    : QPushButton(text, parent) {

  setFixedHeight(23);

  setMinimumWidth(75);

  setObjectName("WordButton");

  setToolTip(text);

  bool ret = connect(this, SIGNAL(clicked(bool)), this, SLOT(onClicked()));

  assert(ret);

}

//-------

void WordButton::onClicked() { emit clicked(text()); }

//-------

void WordButton::onRemove() { emit removeWord(text()); }

//-------

void WordButton::contextMenuEvent(QContextMenuEvent* event) {

  QMenu menu(this);

  QAction* removeAct = new QAction(tr("Remove %1").arg(text()), &menu);

  bool ret = connect(removeAct, SIGNAL(triggered()), this, SLOT(onRemove()));

  menu.addAction(removeAct);

  menu.exec(event->globalPos());

}

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

AddWordButton::AddWordButton(const int col, QWidget* parent)

    : WordButton(tr("New"), parent), m_column(col) {

  static QString columnLabel[WORD_COLUMN_AMOUNT] = {tr("Character"), tr("Part"),

                                                    tr("Suffix")};

  // setFixedSize(23, 23);

  setIcon(createQIcon("plus"));

  setIconSize(QSize(16, 16));

  setToolTip(tr("Add New Word for %1").arg(columnLabel[col]));

}

//-------

void AddWordButton::onClicked() { emit clicked(m_column); }

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

//-------

// load word list from user's settings

void EasyInputArea::loadList() {

  TFilePath fp(ToonzFolder::getMyModuleDir() +

               TFilePath(styleNameEasyInputWordsFileName));

  if (!TFileStatus(fp).doesExist()) return;

  QSettings wordsSettings(toQString(fp), QSettings::IniFormat);

  for (int a = 0; a < WORD_COLUMN_AMOUNT; a++) {

    int size = wordsSettings.beginReadArray(QString::number(a));

    if (size == 0) continue;

    for (int i = 0; i < size; ++i) {

      wordsSettings.setArrayIndex(i);

      m_wordList[a].append(wordsSettings.value("word").toString());

    }

    wordsSettings.endArray();

  }

}

//-------

// save word list to user's settings

void EasyInputArea::saveList() {

  TFilePath fp(ToonzFolder::getMyModuleDir() +

               TFilePath(styleNameEasyInputWordsFileName));

  QSettings wordsSettings(toQString(fp), QSettings::IniFormat);

  wordsSettings.clear();

  for (int a = 0; a < WORD_COLUMN_AMOUNT; a++) {

    wordsSettings.beginWriteArray(QString::number(a));

    for (int i = 0; i < m_wordList[a].count(); ++i) {

      wordsSettings.setArrayIndex(i);

      wordsSettings.setValue("word", m_wordList[a].at(i));

    }

    wordsSettings.endArray();

  }

}

//------

void EasyInputArea::updatePanelSize(int columnId) {

  int itemCount = m_wordList[columnId].size() + 1;

  int rowCount  = tceil((double)itemCount / (double)areaColCount[columnId]);

  QWidget* widget = m_scrollArea[columnId]->widget();

  widget->setFixedSize(m_scrollArea[columnId]->width(), rowCount * 26 + 3);

}

//------

EasyInputArea::EasyInputArea(QWidget* parent) : QWidget(parent) {

  loadList();

  QHBoxLayout* mainLay = new QHBoxLayout();

  mainLay->setMargin(0);

  mainLay->setSpacing(3);

  for (int a = 0; a < WORD_COLUMN_AMOUNT; a++) {

    m_scrollArea[a] = new QScrollArea(this);

    m_scrollArea[a]->setObjectName("SolidLineFrame");

    QFrame* wordPanel       = new QFrame(this);

    QGridLayout* buttonsLay = new QGridLayout();

    buttonsLay->setMargin(3);

    buttonsLay->setSpacing(3);

    {

      int row = 0;

      int col = 0;

      // store word buttons

      for (int s = 0; s < m_wordList[a].size(); s++) {

        WordButton* button = new WordButton(m_wordList[a].at(s), this);

        button->setFocusPolicy(Qt::NoFocus);

        buttonsLay->addWidget(button, row, col);

        connect(button, SIGNAL(clicked(const QString&)), this,

                SIGNAL(wordClicked(const QString&)));

        connect(button, SIGNAL(removeWord(const QString&)), this,

                SLOT(onRemoveWord(const QString&)));

        col++;

        if (col == areaColCount[a]) {

          col = 0;

          row++;

        }

      }

      // add button

      AddWordButton* addWordButton = new AddWordButton(a, this);

      addWordButton->setFocusPolicy(Qt::NoFocus);

      buttonsLay->addWidget(addWordButton, row, col);

      connect(addWordButton, SIGNAL(clicked(const int)), this,

              SLOT(addWordButtonClicked(const int)));

    }

    for (int c = 0; c < areaColCount[a]; c++)

      buttonsLay->setColumnStretch(c, 1);

    wordPanel->setLayout(buttonsLay);

    m_wordLayout[a] = buttonsLay;

    m_scrollArea[a]->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    m_scrollArea[a]->setMinimumWidth(areaColCount[a] * 78 + 3);

    m_scrollArea[a]->setWidget(wordPanel);

    mainLay->addWidget(m_scrollArea[a], areaColCount[a]);

  }

  setLayout(mainLay);

}

//-------

void EasyInputArea::addWordButtonClicked(const int columnId) {

  NewWordDialog dialog(this);

  if (dialog.exec() == QDialog::Rejected) return;

  QString word = dialog.getName();

  if (word.isEmpty()) return;

  bool found = false;

  for (int i = 0; i < WORD_COLUMN_AMOUNT; i++) {

    found = m_wordList[i].contains(word);

    if (found) break;

  }

  if (found) {

    QMessageBox::warning(this, tr("Warning"),

                         tr("%1 is already registered").arg(word));

    return;

  }

  // Append word to the list

  m_wordList[columnId].append(word);

  // Append new WordButton

  WordButton* button = new WordButton(word, this);

  connect(button, SIGNAL(clicked(const QString&)), this,

          SIGNAL(wordClicked(const QString&)));

  connect(button, SIGNAL(removeWord(const QString&)), this,

          SLOT(onRemoveWord(const QString&)));

  button->setFocusPolicy(Qt::NoFocus);

  int wordCount   = m_wordList[columnId].count();

  int row         = indexToRow(wordCount - 1, columnId);

  int col         = indexToCol(wordCount - 1, columnId);

  QWidget* addBtn = m_wordLayout[columnId]->itemAtPosition(row, col)->widget();

  m_wordLayout[columnId]->addWidget(button, row, col);

  // Move add button to the next index

  col++;

  if (col == areaColCount[columnId]) {

    col = 0;

    row++;

  }

  m_wordLayout[columnId]->addWidget(addBtn, row, col);

  updatePanelSize(columnId);

  saveList();

}

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

void EasyInputArea::onRemoveWord(const QString& word) {

  int a = -1;

  int index;

  for (int i = 0; i < WORD_COLUMN_AMOUNT; i++) {

    index = m_wordList[i].indexOf(word);

    if (index >= 0) {

      a = i;

      break;

    }

  }

  if (a < 0 || a >= WORD_COLUMN_AMOUNT) return;

  // delete button

  int row                = indexToRow(index, a);

  int col                = indexToCol(index, a);

  WordButton* wordButton = qobject_cast<wordbutton*>(</wordbutton*>

      m_wordLayout[a]->itemAtPosition(row, col)->widget());

  if (!wordButton) return;

  bool ret = true;

  ret = ret && disconnect(wordButton, SIGNAL(clicked(const QString&)), this,

                          SIGNAL(wordClicked(const QString&)));

  ret = ret && disconnect(wordButton, SIGNAL(removeWord(const QString&)), this,

                          SLOT(onRemoveWord(const QString&)));

  assert(ret);

  m_wordLayout[a]->removeWidget(wordButton);

  wordButton->deleteLater();

  // move the following buttons

  for (int i = index + 1; i <= m_wordList[a].count(); i++) {

    int row         = indexToRow(i, a);

    int col         = indexToCol(i, a);

    QWidget* button = m_wordLayout[a]->itemAtPosition(row, col)->widget();

    col--;

    if (col < 0) {

      row--;

      col = areaColCount[a] - 1;

    }

    m_wordLayout[a]->addWidget(button, row, col);

  }

  // remove word from the list

  m_wordList[a].removeAt(index);

  updatePanelSize(a);

}

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

void EasyInputArea::enterEvent(QEvent*) { emit mouseEnter(); }

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

void EasyInputArea::resizeEvent(QResizeEvent*) {

  for (int i = 0; i < WORD_COLUMN_AMOUNT; i++) {

    updatePanelSize(i);

  }

}

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

StyleNameEditor::StyleNameEditor(QWidget* parent)

    : Dialog(parent, false, false, "StyleNameEditor")

    , m_paletteHandle(0)

    , m_selectionStart(-1)

    , m_selectionLength(0) {

  QString columnLabel[WORD_COLUMN_AMOUNT] = {AddWordButton::tr("Character"),

                                             AddWordButton::tr("Part"),

                                             AddWordButton::tr("Suffix")};

  setWindowTitle(tr("Name Editor"));

  m_styleName                  = new QLineEdit(this);

  m_okButton                   = new QPushButton(tr("OK"), this);

  m_cancelButton               = new QPushButton(tr("Cancel"), this);

  m_applyButton                = new QPushButton(tr("Apply and Next"), this);

  EasyInputArea* easyInputArea = new EasyInputArea(this);

  QLabel* panelLabel[WORD_COLUMN_AMOUNT];

  for (int i = 0; i < WORD_COLUMN_AMOUNT; i++) {

    panelLabel[i] = new QLabel(columnLabel[i], this);

    panelLabel[i]->setStyleSheet("font-size: 10px; font: italic;");

  }

  setFocusProxy(m_styleName);

  m_styleName->setEnabled(false);

  m_okButton->setEnabled(false);

  m_okButton->setFocusPolicy(Qt::NoFocus);

  m_applyButton->setEnabled(false);

  m_applyButton->setFocusPolicy(Qt::NoFocus);

  m_cancelButton->setFocusPolicy(Qt::NoFocus);

  m_styleName->setObjectName("LargeSizedText");

  easyInputArea->setFocusPolicy(Qt::NoFocus);

  // QVBoxLayout* mainLayout = new QVBoxLayout();

  m_topLayout->setMargin(10);

  m_topLayout->setSpacing(5);

  {

    QHBoxLayout* inputLayout = new QHBoxLayout();

    inputLayout->setMargin(0);

    inputLayout->setSpacing(3);

    {

      inputLayout->addWidget(new QLabel(tr("Style Name"), this), 0);

      inputLayout->addWidget(m_styleName, 1);

    }

    m_topLayout->addLayout(inputLayout, 0);

    QHBoxLayout* buttonLayout = new QHBoxLayout();

    buttonLayout->setMargin(0);

    buttonLayout->setSpacing(3);

    {

      buttonLayout->addWidget(m_okButton);

      buttonLayout->addWidget(m_applyButton);

      buttonLayout->addWidget(m_cancelButton);

    }

    m_topLayout->addLayout(buttonLayout, 0);

    m_topLayout->addSpacing(5);

    QHBoxLayout* labelLay = new QHBoxLayout();

    labelLay->setMargin(0);

    labelLay->setSpacing(3);

    {

      labelLay->addWidget(new QLabel(tr("Easy Inputs"), this), 1,

                          Qt::AlignLeft);

      for (int i = 0; i < WORD_COLUMN_AMOUNT; i++) {

        labelLay->addWidget(panelLabel[i],

                            (i == 0) ? areaColCount[i] - 1 : areaColCount[i],

                            Qt::AlignRight | Qt::AlignBottom);

      }

    }

    m_topLayout->addLayout(labelLay, 0);

    m_topLayout->addWidget(easyInputArea, 1);

  }

  bool ret = true;

  ret =

      ret && connect(m_okButton, SIGNAL(pressed()), this, SLOT(onOkPressed()));

  ret = ret && connect(m_cancelButton, SIGNAL(pressed()), this,

                       SLOT(onCancelPressed()));

  ret = ret &&

        connect(m_applyButton, SIGNAL(pressed()), this, SLOT(onApplyPressed()));

  ret = ret && connect(easyInputArea, SIGNAL(wordClicked(const QString&)), this,

                       SLOT(onWordClicked(const QString&)));

  ret = ret && connect(easyInputArea, SIGNAL(mouseEnter()), this,

                       SLOT(storeSelectionInfo()));

  assert(ret);

}

//-------

void StyleNameEditor::setPaletteHandle(TPaletteHandle* ph) {

  m_paletteHandle = ph;

  connect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,

          SLOT(onStyleSwitched()));

  connect(m_paletteHandle, SIGNAL(paletteSwitched()), this,

          SLOT(onStyleSwitched()));

  m_styleName->setEnabled(true);

  m_okButton->setEnabled(true);

  m_applyButton->setEnabled(true);

}

//-------

void StyleNameEditor::showEvent(QShowEvent* e) {

  if (m_paletteHandle) {

    disconnect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,

               SLOT(onStyleSwitched()));

    disconnect(m_paletteHandle, SIGNAL(paletteSwitched()), this,

               SLOT(onStyleSwitched()));

    connect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,

            SLOT(onStyleSwitched()));

    connect(m_paletteHandle, SIGNAL(paletteSwitched()), this,

            SLOT(onStyleSwitched()));

  }

  // update view

  onStyleSwitched();

}

//-------disconnection

void StyleNameEditor::hideEvent(QHideEvent* e) {

  disconnect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,

             SLOT(onStyleSwitched()));

  disconnect(m_paletteHandle, SIGNAL(paletteSwitched()), this,

             SLOT(onStyleSwitched()));

}

//-----update display when the current style is switched

void StyleNameEditor::onStyleSwitched() {

  if (!m_paletteHandle || !m_paletteHandle->getStyle()) return;

  std::wstring styleName = m_paletteHandle->getStyle()->getName();

  m_styleName->setText(QString::fromStdWString(styleName));

  m_styleName->selectAll();

  m_styleName->setFocus();

  int styleId = m_paletteHandle->getStyleIndex();

  setWindowTitle(tr("Name Editor: # %1").arg(styleId));

}

//-------

void StyleNameEditor::onOkPressed() {

  onApplyPressed();

  close();

}

//-------

void StyleNameEditor::onApplyPressed() {

  if (!m_paletteHandle || !m_paletteHandle->getStyle()) return;

  if (m_styleName->text() == "") return;

  std::wstring newName = m_styleName->text().toStdWString();

  PaletteCmd::renamePaletteStyle(m_paletteHandle, newName);

  // move the current style to the next

  TPalette* palette    = m_paletteHandle->getPalette();

  int currentIndex     = m_paletteHandle->getStyleIndex();

  TPalette::Page* page = palette->getStylePage(currentIndex);

  int indexInPage      = page->search(currentIndex);

  // If indexInPage is at the end of the page, then move to the top of the next

  // page

  if (indexInPage == page->getStyleCount() - 1) {

    int pageIndex = page->getIndex();

    // if the current page is the last one, then move to the first page

    while (1) {

      pageIndex++;

      if (pageIndex == palette->getPageCount()) pageIndex = 0;

      page = palette->getPage(pageIndex);

      if (page->getStyleCount() > 0) break;

    }

    currentIndex = page->getStyleId(0);

  } else

    currentIndex = page->getStyleId(indexInPage + 1);

  // change the current index

  m_paletteHandle->setStyleIndex(currentIndex);

}

//-------

void StyleNameEditor::onCancelPressed() { close(); }

//-------

// focus when the mouse enters

void StyleNameEditor::enterEvent(QEvent* e) {

  activateWindow();

  m_styleName->setFocus();

}

//-------

void StyleNameEditor::onWordClicked(const QString& word) {

  if (m_selectionLength != 0)

    m_styleName->setSelection(m_selectionStart, m_selectionLength);

  else

    m_styleName->setCursorPosition(m_selectionStart);

  m_styleName->insert(word);

  m_styleName->setFocus();

  storeSelectionInfo();

}

//-------

// remember the selection of m_stylename when mouse entered in EasyInputArea

void StyleNameEditor::storeSelectionInfo() {

  if (m_styleName->hasSelectedText()) {

    m_selectionStart  = m_styleName->selectionStart();

    m_selectionLength = m_styleName->selectedText().length();

  } else {

    m_selectionStart  = m_styleName->cursorPosition();

    m_selectionLength = 0;

  }

}