#include "lts_dialog.h"
#include "lts_progress_dialog_helper.h"
#include "lts_message_dialog.h"
#include "lts_dialog_helper.h"
#include "lts_dialog_button_box.h"
#include "lts_base_layout_widget.h"
#include "lts_date_time_edit.h"

#include <QHBoxLayout>
#include <QProgressBar>
#include <QLineEdit>
#include <QComboBox>
#include <QCheckBox>
#include <QSpinBox>
#include <QDateTimeEdit>
#include <QSlider>
#include <QPlainTextEdit>
#include <QTextEdit>
#include <QWidget>
#include <QRadioButton>
#include <QTableView>
#include <QTableWidget>
#include <QListView>
#include <QListWidget>
#include <QSlider>
#include <QScroller>
#include <QScrollArea>
#include <QMenu>
#include <QInputDialog>
#include <QHBoxLayout>

#include <QPainter>
#include <QColor>
#include <QMetaMethod>
#include <QDebug>

#include <LtsSession/lts_session_data.h>


namespace LtsWidgets
{
int LtsDialog::s_object_count = 0;


class OverlayContainer : public QWidget
{
  Q_OBJECT
public:
  OverlayContainer(QWidget *parent);

protected:
  void paintEvent(QPaintEvent *e) override;
};


OverlayContainer::OverlayContainer(QWidget *parent)
  : QWidget(parent)
{
  setAttribute(Qt::WA_TranslucentBackground);
}


void OverlayContainer::paintEvent(QPaintEvent *e)
{
  QPainter p(this);
  p.fillRect(rect(), { 80, 80, 80, 200 });
  QWidget::paintEvent(e);
}




LtsDialog::LtsDialog(QWidget *parent, ButtonCombination buttonCombination, bool closeable)
  : QWidget()
  , m_changesMade(false)
  , m_firstShow(true)
  , m_baseLayoutWidget(nullptr)
  , m_isClosable(closeable)
  , m_noLockTopic(false)
  , m_unchangeableDialog(false)
  , m_dialogHelper(new LtsDialogHelper(nullptr)) 
  

  
  , m_buttonBox(nullptr)
  , m_uiRequirements(new UiRequirementList())
  , m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger().getNGLLogger("LtsWidget.LtsDialog"))
{
  Q_UNUSED(parent);

  s_object_count++;

  m_dialogHelper->setDialog(this); 
  m_buttonBox = m_dialogHelper->getButtonBox(); 















  addDebugMenuButton();


  


  connect(m_buttonBox->getButton(DialogButton::Close), &QPushButton::clicked, this, &LtsDialog::slotClose); 

  switch(buttonCombination)
  {
    case ButtonCombination::OkCancel:
    {
      m_buttonBox->getButton(DialogButton::Close)->setText(tr("Cancel")); 
      connect(m_buttonBox->getButton(DialogButton::Ok),    &QPushButton::clicked, this, &LtsDialog::slotOkay);
      break;
    }

    case ButtonCombination::OkApplyCancel:
    {
      m_buttonBox->getButton(DialogButton::Close)->setText(tr("Cancel")); 
      connect(m_buttonBox->getButton(DialogButton::Ok),    &QPushButton::clicked, this, &LtsDialog::slotOkay);
      connect(m_buttonBox->getButton(DialogButton::Apply), &QPushButton::clicked, this, &LtsDialog::slotApply);
      m_buttonBox->getButton(DialogButton::Apply)->setVisible(true);
      break;
    }

    case ButtonCombination::CloseOnly:
    {
      m_buttonBox->getButton(DialogButton::Ok)->setVisible(false);
      setUnchangeable();
      break;
    }

    default:
    case ButtonCombination::SeamlessDialog:
    {
      m_buttonBox->setVisible(false);
      setContentsMargins(0,0,0,0);
      m_dialogHelper->setContentsMargins(0,0,0,0);

      QLayout *l = m_dialogHelper->layout();

      if (l)
      {
        l->setContentsMargins(0,0,0,0);
        l->setMargin(0);
      }
      else
      {
        qWarning() << "LtsDialog::c_tor: Dialog Helper has no layout to set margins";
      }

      break;
    }
  }

  if (!closeable)
  {
    m_buttonBox->getButton(LtsWidgets::DialogButton::Ok)->setVisible(false);
    m_buttonBox->getButton(LtsWidgets::DialogButton::Close)->setVisible(false);
  }
}


LtsDialog::~LtsDialog()
{
  delete m_uiRequirements;

  if (m_overlayWidget)
    m_overlayWidget->setParent(nullptr);

  
  

  s_object_count--;
}


void LtsDialog::setOverlay(QWidget *widget)
{
  if (m_overlayContainer)
  {
    if (m_overlayWidget)
    {
      m_overlayWidget->hide();
      m_overlayWidget->setParent(nullptr);
      m_overlayWidget->hide();
      m_overlayWidget = nullptr;
      
    }

    m_overlayContainer->hide();
    m_overlayContainer->setParent(nullptr);
    m_overlayContainer->hide();
    m_overlayContainer->deleteLater();
    m_overlayContainer = nullptr;
  }

  
  OverlayContainer *overlayContainer = new OverlayContainer(m_dialogHelper); 

  connect(m_dialogHelper.data(), &LtsDialogHelper::signalSizeChanged,
          overlayContainer, [overlayContainer](const QSize &size)
  {
    overlayContainer->setGeometry(QRect(QPoint(0, 0), size));
  });

  overlayContainer->setGeometry(QRect(QPoint(0, 0), m_dialogHelper->size()));
  m_overlayContainer = overlayContainer;


  QHBoxLayout *l = new QHBoxLayout;
  m_overlayContainer->setLayout(l);

  widget->setAutoFillBackground(true);
  l->addWidget(widget, 0, Qt::AlignCenter);
  widget->show();

  connect(widget, &QWidget::destroyed,
          m_overlayContainer.data(), &QObject::deleteLater); 

  m_overlayWidget = widget;

  m_overlayContainer->show();
  m_overlayContainer->raise();
}


void LtsDialog::unsetOverlay()
{
  if (m_overlayWidget)
    m_overlayWidget->setParent(nullptr);

  if (!m_overlayContainer)
    return;

  m_overlayContainer->setParent(nullptr);
  m_overlayContainer->deleteLater();
}


LtsDialogHelper *LtsDialog::getHelper()
{
  return m_dialogHelper;
}


LtsBaseLayoutWidget* LtsDialog::baseLayoutWidget()
{
  return m_baseLayoutWidget;
}


void LtsDialog::setOnlineHelpFilename(const QString &fileName) 
{
  m_onlineHelpFileName = fileName;
  QPushButton *btn = m_buttonBox->getButton(DialogButton::Help);

  if (btn == nullptr) 
    return;

  if (LtsSessionData::LtsSessionData::getInstance()->isTablet() && strcmp(PROJECTBUILD, "guez") == 0)
    return; 

  connect(btn, &QPushButton::clicked,
          this, [this]()
  {
    emit signalShowOnlineHelp(m_onlineHelpFileName);
  });

  btn->setVisible(true);
}


void LtsDialog::addDebugMenuButton()
{
#ifdef LTS_DEBUG 
  QMenu *menu = new QMenu(this);

  menu->addAction(QStringLiteral("simulate changes"), this, &LtsDialog::slotChangesMade);
  menu->addAction(QStringLiteral("unchange"), this, &LtsDialog::__unchange__);
  menu->addAction(QStringLiteral("retranslate"), this, &LtsDialog::retranslate);
  menu->addAction(QStringLiteral("force unlock"), this, [this]() { setUnchangeable(false); });
  menu->addAction(QStringLiteral("set unchangeable"), this, [this]() { setUnchangeable(); });
  menu->addAction(QStringLiteral("try lock"), this, &LtsDialog::tryLockTopic);
  menu->addAction(QStringLiteral("set closable"), this, [this]() { m_isClosable = true; });
  menu->addAction(QStringLiteral("set unclosable"), this, [this]() { m_isClosable = false; });
  menu->addAction(QStringLiteral("clear requirements"), this, [this] { m_uiRequirements->clear(); });
  menu->addAction(QStringLiteral("enable all button box buttons"), this, [this]()
  {
    const auto children = m_buttonBox->findChildren<QPushButton *>();
    for (QPushButton *pb : children)
      pb->setEnabled(true);
  });
  menu->addAction(QStringLiteral("show button box button .."), this, [this]()
  {
    QString buttonObjectName = QInputDialog::getText(this, QString(), QStringLiteral("Enter button object name"));
    if (buttonObjectName.isEmpty())
      return;

    const QList<QPushButton *> buttons = m_buttonBox->findChildren<QPushButton *>(buttonObjectName);

    int btnCount = buttons.count();
    if (btnCount == 0)
    {
      LtsMessageDialog::showMessage(this, QStringLiteral("button not found"));
      return;
    }

    if (btnCount > 1)
    {
      QStringList buttonStringList;
      buttonStringList.reserve(buttons.size());
      for (QPushButton *pb : buttons)
        buttonStringList += pb->objectName();

      LtsMessageDialog::showMessage(this, QStringLiteral("button ambiguous: %1").arg(buttonStringList.join(QStringLiteral(", "))));
      return;
    }

    buttons.at(0)->setVisible(true);
  });

  QPushButton *debugBtn = m_buttonBox->getButton(DialogButton::_debug_);
  debugBtn->setMenu(menu);
  debugBtn->setVisible(true);
#endif
}


void LtsDialog::updateWindowTitle()
{
  QString completeTitle = m_title;

  if (m_changesMade)
    completeTitle.insert(0, QStringLiteral("\u2022")); 

  if (!m_topicLockedBy.isEmpty())
    completeTitle.push_back(QString(QStringLiteral(" - READ-ONLY (%1)")).arg(m_topicLockedBy));

  QWidget::setWindowTitle(completeTitle);
  if (m_dialogHelper != nullptr)
    m_dialogHelper->setWindowTitle(completeTitle);
}


void LtsDialog::setWindowTitle(const QString &title)
{
  m_title = title;
  updateWindowTitle();
}


void LtsDialog::setBaseLayoutWidget(LtsBaseLayoutWidget *baseLayoutWidget)
{
  m_baseLayoutWidget = baseLayoutWidget;
}

void LtsDialog::setIdentifier(const QString &identifier)
{
  m_identifier = identifier;
  tableColumnOrganiserSetting();
}


void LtsDialog::addConnections(QWidget *widget)
{
  if (addChangesMadeSignal<QLineEdit>(widget, &QLineEdit::textChanged)) return;
  if (addChangesMadeSignal<QDateTimeEdit>(widget, &QDateTimeEdit::dateTimeChanged)) return;
  if (addChangesMadeSignal<QComboBox>(widget, &QComboBox::currentTextChanged)) return;
  if (addChangesMadeSignal<QCheckBox>(widget, &QCheckBox::stateChanged)) return;
  if (addChangesMadeSignal<QSpinBox>(widget, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged))) return;
  if (addChangesMadeSignal<QDoubleSpinBox>(widget, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged))) return;
  if (addChangesMadeSignal<QSlider>(widget, &QSlider::valueChanged)) return;
  if (addChangesMadeSignal<QPlainTextEdit>(widget, &QPlainTextEdit::textChanged)) return;
  if (addChangesMadeSignal<QTextEdit>(widget, &QTextEdit::textChanged)) return; 
  if (addChangesMadeSignal<QAbstractButton>(widget, &QAbstractButton::toggled)) return;
  if (addChangesMadeSignal<LtsDateTimeEdit>(widget, &LtsDateTimeEdit::dateTimeChanged)) return;
}


void LtsDialog::setUnchangeable(bool unchangeable) 
{
  m_unchangeableDialog = unchangeable;
}


bool LtsDialog::addDialogFixed(LtsDialog *dialog, const char *menuGroupUntranslated, const QString &identifier, const LayoutArea &layoutArea, bool setClosable, bool focusNewTab)
{
  return addDialog(dialog,  tr(menuGroupUntranslated) , identifier, layoutArea, setClosable, focusNewTab);
}


bool LtsDialog::addDialog(LtsDialog *dialog, const QString &menuGroup, const QString &identifier, const LayoutArea &layoutArea, bool setClosable, bool focusNewTab)
{
  if (!m_baseLayoutWidget)
  {
    qCritical() << "LtsDialog: addDialog: no base layout set - cannot add Dialog !";
    return false;
  }

  return m_baseLayoutWidget->addWidget(dialog, menuGroup, identifier, layoutArea, setClosable, focusNewTab);
}


bool LtsDialog::amIFocused() const
{
  if (!m_baseLayoutWidget)
  {
    qCritical() << "LtsDialog: addDialog: no base layout set - cannot check for focus!";
    return false;
  }

  return m_baseLayoutWidget->isDialogFocused(this);
}


bool LtsDialog::focusDialog(const QString &menuGroup, const QString &identifier, const LayoutArea &layoutArea)
{
  if (!m_baseLayoutWidget)
  {
    qCritical() << "LtsDialog: addDialog: no base layout set - cannot focus Dialog !";
    return false;
  }

  return m_baseLayoutWidget->focusTab(menuGroup, identifier, layoutArea);
}


void LtsDialog::showEvent(QShowEvent *event)
{
  emit visibilityChanged(true);

  bool tmp = m_unchangeableDialog;

  if (!m_firstShow) 
  {
    QWidget::showEvent(event);
    return;
  }

  m_unchangeableDialog = true; 
  m_firstShow = false;

  

  

  QList<QWidget *> listenWidgets = findChildren<QWidget *>();

  for (auto i = listenWidgets.begin(); i != listenWidgets.end(); ++i)
  {
    
    

    QWidget *widget = *i;

    QVariant isConst = widget->property("const");
    if (isConst.isValid() && isConst.toBool())
      continue;

    if (!tmp)
      addConnections(widget);

#ifdef TABLET_MODE
    LtsWidgets::addTouchScroll(widget);
#endif
  }

  QWidget::showEvent(event);
  m_unchangeableDialog = tmp; 
}


void LtsDialog::tryLockTopic()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  if (!m_topicInfo.isValid())
    return;

  if (m_topicInfo.isLocked())
  {
    WARNING_LOG(m_logger) << LOGFUNCTION << " tried to lock with an already locked topic info, return";
    return;
  }

  if (m_noLockTopic)
    return;


  
  
  
  
  
  
  bool bIsConnected = isSignalConnected(QMetaMethod::fromSignal(&LtsDialog::signalLockTopic));

  DEBUG_LOG(m_logger) << LOGFUNCTION
                      << " signalLockTopic(): "
                      << ", TopicName =" << m_topicInfo.topicName()
                      << ", entity =" << m_topicInfo.entityId()
                      << ", signalLockTopic isConnected=" << bIsConnected;

  if (bIsConnected)
  {
    emit signalLockTopic(m_topicInfo); 
    
    m_topicInfo.setLocked();
  }
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

void LtsDialog::initTopicLockHandler(const QString &topicName, int entityId)
{
  

  m_topicInfo.setTopicName(topicName);
  m_topicInfo.setEntity(entityId);
  m_topicInfo.setValid();
}


void LtsDialog::tryLockTopicNew()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  tryLockTopic();
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

void LtsDialog::tryLockTopicNew(const QString &topicName, int entityId)
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START"
                      << ", topicName='" << topicName << "'"
                      << ", entityId=" << entityId;

  

  if (m_topicInfo.entityId() != entityId)
  {
    DEBUG_LOG(m_logger) << LOGFUNCTION << " topicName='" << topicName << "'"
                        << " change from " << m_topicInfo.entityId() << " to " << entityId;
    m_topicInfo.setLocked(false);
  }


  m_topicInfo.setTopicName(topicName);
  m_topicInfo.setEntity(entityId);
  m_topicInfo.setValid();

  tryLockTopic();
  TRACE_LOG(m_logger) << LOGFUNCTION << " END"
                      << ", topicName='" << topicName << "'"
                      << ", entityId=" << entityId;
}

void LtsDialog::triggerTopicLock()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START" << " !!trigger!!";
  tryLockTopic();
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}


void LtsDialog::translate(const QString &title) 
{
  bool isAlreadyUnchangeable = unchangeable();

  if (!isAlreadyUnchangeable)
    setUnchangeable(true); 

  setWindowTitle(title);





  if (!isAlreadyUnchangeable)
    setUnchangeable(false); 

  {
    bool isNowAlreadyUnchangeable = unchangeable();

    QPushButton *b = m_buttonBox->getButton(DialogButton::ReadOnly);
    if (b)
    {
      connect(b, &QPushButton::clicked, this, &LtsDialog::onReadOnlyButtonClicked, Qt::UniqueConnection);

      
      b->setVisible(isNowAlreadyUnchangeable && !m_topicLockedBy.isEmpty());
      if (b->isVisible())
        b->setToolTip(tr("Locked by: %1").arg(m_topicLockedBy));
      else
        b->setToolTip({});
    }
  }
}



void LtsDialog::slotLock(const QString &lockedBy)
{
  setUnchangeable(true);

  m_topicLockedBy = lockedBy;

  lock();
  retranslate();
}


void LtsDialog::slotUnlock()
{
  setUnchangeable(false);

  m_topicLockedBy.clear();

  unlock();
  retranslate();
}


void LtsDialog::lock()
{
  setWidgetsReadonly<QLineEdit>(true);
  setWidgetsReadonly<QDateTimeEdit>(true);
  
  setWidgetsReadonly<QSpinBox>(true);
  setWidgetsReadonly<QDoubleSpinBox>(true);
  setWidgetsReadonly<QPlainTextEdit>(true);
  setWidgetsReadonly<QTextEdit>(true);

  setWidgetsDisabled<QComboBox>(true);
  setWidgetsDisabled<QCheckBox>(true);
  setWidgetsDisabled<QRadioButton>(true);
  setWidgetsDisabled<QSlider>(true);
  setWidgetsDisabled<QTableView>(true);
  setWidgetsDisabled<QTableWidget>(true);
  setWidgetsDisabled<QListView>(true);
  setWidgetsDisabled<QListWidget>(true);
  setWidgetsDisabled<QPushButton>(true);
}


void LtsDialog::unlock()
{
  restoreReadonly<QLineEdit>();
  restoreReadonly<QDateTimeEdit>();

  restoreReadonly<QSpinBox>();
  restoreReadonly<QDoubleSpinBox>();
  restoreReadonly<QPlainTextEdit>();
  restoreReadonly<QTextEdit>();

  restoreEnabled<QComboBox>();
  restoreEnabled<QCheckBox>();
  restoreEnabled<QRadioButton>();
  restoreEnabled<QSlider>();
  restoreEnabled<QTableView>();
  restoreEnabled<QTableWidget>();
  restoreEnabled<QListView>();
  restoreEnabled<QListWidget>();
}


void LtsDialog::slotChangesMade() 
{
  if (m_unchangeableDialog)
    return;

  m_changesMade = true;
  updateWindowTitle();

  m_buttonBox->getButton(DialogButton::Ok)->setEnabled(true);
  m_buttonBox->getButton(DialogButton::Apply)->setEnabled(true);

  emit signalChangesMade(); 
}


void LtsDialog::resetChanges()
{
  m_changesMade = false;

  updateWindowTitle();
  
    

  m_buttonBox->getButton(DialogButton::Ok)->setEnabled(false);
  m_buttonBox->getButton(DialogButton::Apply)->setEnabled(false);
  emit signalChangesReset();
}


bool LtsDialog::_apply()
{
  if (m_uiRequirements->checkRequirements(this) && apply())
  {
    resetChanges(); 
    return true;
  }

  return false;
}


Button LtsDialog::askApplyDiscardCancel()
{
  return LtsMessageDialog::askApplyDiscardCancel(this);
}


void LtsDialog::slotApply() 
{
  _apply();
}


void LtsDialog::slotOkay()  
{
  if (_apply()) 
    _close();
}


void LtsDialog::slotHide()
{
  _hide();
}


void LtsDialog::slotClose() 
{
  
  if ((m_changesMade) && (!m_unchangeableDialog))
  {
    switch (askApplyDiscardCancel())
    {
      case Button::Apply:
        slotOkay(); 
        break;
      case Button::Discard:
        _discard(); 
        break;
      default: 
        break; 
    }
  }
  else
  {
    _close(); 
  }
}

void LtsDialog::onReadOnlyButtonClicked()
{
  if (m_topicLockedBy.isEmpty())
    return;
  LtsWidgets::LtsMessageDialog::showMessage(this, tr("Locked by: %1").arg(m_topicLockedBy));
}


void LtsDialog::closeRequest()
{
  slotClose();
}


void LtsDialog::_hide()
{
  if (m_dialogHelper != nullptr)
  {
    emit signalHide(m_dialogHelper);
    
  }
}


void LtsDialog::_close()
{
  resetChanges(); 
  aboutToClose();
  if (m_dialogHelper != nullptr)
    m_dialogHelper->close();
}

void LtsDialog::_discard()
{
  dialogCanceled();
  _close();
}

} 




#include "lts_dialog.moc"