/**********************************************************************************************
    Copyright (C) 2014 Oliver Eichler <oliver.eichler@gmx.de>

    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 3 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, see <http://www.gnu.org/licenses/>.

**********************************************************************************************/

#include "gis/ovl/CDetailsOvlArea.h"

#include <QtWidgets>

#include "gis/ovl/CGisItemOvlArea.h"
#include "helpers/CLinksDialog.h"
#include "widgets/CTextEditWidget.h"

CDetailsOvlArea::CDetailsOvlArea(CGisItemOvlArea& area, QWidget* parent) : QDialog(parent), area(area) {
  setupUi(this);

  QPixmap icon(64, 24);
  for (const IGisItem::color_t& color : IGisItem::getColorMap()) {
    icon.fill(color.color);
    comboColor->addItem(icon, "", color.color);
  }

  for (const Qt::BrushStyle& style : area.brushStyles) {
    icon.fill(Qt::white);
    QPainter p(&icon);
    p.setPen(Qt::black);
    p.setBrush(style);
    p.drawRect(icon.rect());

    comboStyle->addItem(icon, "", int(style));
  }

  for (const CGisItemOvlArea::width_t& width : area.lineWidths) {
    comboBorderWidth->addItem(width.string, width.width);
  }

  setupGui();

  if (area.isOnDevice()) {
    toolLock->setDisabled(true);
  }

  connect(comboColor, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
          &CDetailsOvlArea::slotSetColor);
  connect(comboBorderWidth, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
          &CDetailsOvlArea::slotSetWidth);
  connect(comboStyle, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
          &CDetailsOvlArea::slotSetStyle);

  connect(checkOpacity, &QCheckBox::toggled, this, &CDetailsOvlArea::slotOpacity);
  connect(toolLock, &QToolButton::toggled, this, &CDetailsOvlArea::slotChangeReadOnlyMode);
  connect(textCmtDesc, &QTextBrowser::anchorClicked, this,
          static_cast<void (CDetailsOvlArea::*)(const QUrl&)>(&CDetailsOvlArea::slotLinkActivated));
  connect(lineName, &CLineEdit::textEdited, this, &CDetailsOvlArea::slotNameChanged);
  connect(lineName, &CLineEdit::editingFinished, this, &CDetailsOvlArea::slotNameChangeFinished);
  connect(listHistory, &CHistoryListWidget::sigChanged, this, &CDetailsOvlArea::setupGui);
}

CDetailsOvlArea::~CDetailsOvlArea() {}

void CDetailsOvlArea::slotSetColor(int idx) {
  if (area.isReadOnly() || originator) {
    return;
  }

  area.setColor(idx);
  setupGui();
}

void CDetailsOvlArea::slotSetWidth(int idx) {
  if (area.isReadOnly() || originator) {
    return;
  }
  area.setWidth(area.lineWidths[idx].width);
  setupGui();
}

void CDetailsOvlArea::slotSetStyle(int idx) {
  if (area.isReadOnly() || originator) {
    return;
  }

  area.setStyle(area.brushStyles[idx]);
  setupGui();
}

void CDetailsOvlArea::slotOpacity(bool yes) {
  if (area.isReadOnly() || originator) {
    return;
  }

  area.setOpacity(yes);
  setupGui();
}

void CDetailsOvlArea::slotChangeReadOnlyMode(bool on) {
  area.setReadOnlyMode(on);
  setupGui();
}

void CDetailsOvlArea::slotNameChanged(const QString& name) {
  const QString shownName = name.isEmpty() ? IGisItem::noName : QString(name).replace('&', "&&");
  setWindowTitle(shownName);
}

void CDetailsOvlArea::slotNameChangeFinished() {
  lineName->clearFocus();

  const QString& name = lineName->text();
  slotNameChanged(name);

  if (name != area.getName()) {
    area.setName(name);
    setupGui();
  }
}

void CDetailsOvlArea::slotLinkActivated(const QUrl& url) {
  if (url.toString() == "comment") {
    CTextEditWidget dlg(area.getComment(), nullptr);
    if (dlg.exec() == QDialog::Accepted) {
      area.setComment(dlg.getHtml());
    }
    setupGui();
  } else if (url.toString() == "description") {
    CTextEditWidget dlg(area.getDescription(), nullptr);
    if (dlg.exec() == QDialog::Accepted) {
      area.setDescription(dlg.getHtml());
    }
    setupGui();
  } else if (url.toString() == "links") {
    QList<IGisItem::link_t> links = area.getLinks();
    CLinksDialog dlg(links, this);
    if (dlg.exec() == QDialog::Accepted) {
      area.setLinks(links);
    }
    setupGui();
  } else {
    QDesktopServices::openUrl(url);
  }
}

void CDetailsOvlArea::setupGui() {
  if (originator) {
    return;
  }
  originator = true;

  bool isReadOnly = area.isReadOnly();
  bool isNogo = area.isNogo();
  setWindowTitle(area.getName());

  labelTainted->setVisible(area.isTainted());
  lineName->setText(area.getName());
  lineName->setReadOnly(isReadOnly);

  comboColor->setCurrentIndex(area.getColorIdx());
  comboBorderWidth->setCurrentIndex(comboBorderWidth->findData(area.getWidth()));
  comboStyle->setCurrentIndex(isNogo ? Qt::NoBrush : comboStyle->findData(area.getStyle()));

  comboColor->setEnabled(!isReadOnly);
  comboBorderWidth->setEnabled(!isReadOnly);
  comboStyle->setEnabled(!isReadOnly && !isNogo);
  checkOpacity->setEnabled(!isReadOnly && !isNogo);

  checkOpacity->setChecked(area.getOpacity());

  labelNogo->setVisible(isNogo);
  labelStyle->setEnabled(!isNogo);

  textCmtDesc->document()->clear();
  textCmtDesc->append(IGisItem::createText(isReadOnly, area.getComment(), area.getDescription(), area.getLinks()));
  textCmtDesc->moveCursor(QTextCursor::Start);
  textCmtDesc->ensureCursorVisible();

  int idx = 0;
  QList<QTreeWidgetItem*> items;
  const CGisItemOvlArea::area_t& a = area.getAreaData();
  for (const CGisItemOvlArea::pt_t& pt : a.pts) {
    QTreeWidgetItem* item = new QTreeWidgetItem();

    item->setText(eColNum, QString::number(idx++));

    // position
    QString str;
    IUnit::degToStr(pt.lon, pt.lat, str);
    item->setText(eColPosition, str);
    items << item;
  }

  treeWidget->clear();
  treeWidget->addTopLevelItems(items);
  treeWidget->header()->resizeSections(QHeaderView::ResizeToContents);

  toolLock->setChecked(isReadOnly);

  listHistory->setupHistory(area);

  originator = false;
}
