#include "track_select_handler.h"
#include "track_content_widget.h"
#include "track_entry.h"

#include "tools.h"

#include <QKeyEvent>
#include <QMenu>
#include <QInputDialog>
#include <QCoreApplication>
#include <QGuiApplication>
#include <QMouseEvent>

#include <QDebug>


namespace LtsScriptTimeline
{

void SelectHandler::slotSetDescription()
{
  if (m_pressedEntry == nullptr)
    return;

  bool ok;
  QString iniDescription = m_pressedEntry->m_description;
  QString text = QInputDialog::getText(tcw,
                                       tr("Operator Application"),
                                       tr("Topic Description:"), QLineEdit::Normal,
                                       iniDescription, &ok, Qt::Popup | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
  if (ok)
  {
    m_pressedEntry->m_description = text;
    emit tcw->signalChangesMade();
  }
}


void SelectHandler::mouseDoubleClick(QMouseEvent *event)
{
  if (m_pressedEntry != nullptr
      && tcw->m_selected.count() == 1
      && !tcw->m_isMultiLineMultiSelectionMode
      && event->buttons() == Qt::LeftButton)
    emit tcw->signalEditEntry(m_pressedEntry->m_topicId);
}


void SelectHandler::mousePressEvent(QMouseEvent *event)
{
  if (event->buttons() == Qt::LeftButton)
  {
    m_pressedEntry = nullptr;

    QPoint clickedPos = tcw->mapFromGlobal(event->globalPos());
    int clickedPosY = clickedPos.y();
    int clickedPosX = clickedPos.x();

    if (clickedPosY < 0 || clickedPosY > tcw->height())
      return;

    int clickedTime = tcw->m_tools->getTime(clickedPosX, tcw->m_isFilter);
    m_pressedEntry = tcw->getTrackEntryAt(clickedTime);
  }
  else if (event->buttons() == Qt::RightButton)
  {
    QMenu *contextMenu = new QMenu(tcw);
    contextMenu->setAttribute(Qt::WA_DeleteOnClose);


    contextMenu->addSection(tr("All tracks"));
    {
      QAction *action = new QAction(tr("Set topic description"), tcw);
      action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_D));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:document-edit.svg")));
      action->setEnabled(m_pressedEntry);
      if (!m_pressedEntry)
        action->setToolTip(tr("Right click directly on a single Topic to edit its description."));
      connect(action, &QAction::triggered, this, &SelectHandler::slotSetDescription);
      contextMenu->addAction(action);
    }

    {
      QAction *action = new QAction(tr("Remove selected Topic(s)"), tcw);
      action->setShortcut(QKeySequence(Qt::Key_Delete));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:delete.svg")));
      connect(action, &QAction::triggered, tcw, &TrackContentWidget::signalDeleteSelectedTopics);
      contextMenu->addAction(action);
    }


    contextMenu->addSection(tr("Main track only"));

    {
      QAction *action = new QAction(tr("Select all topics"), tcw);
      action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_A));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:selection_rec.svg")));
      connect(action, &QAction::triggered, tcw, &TrackContentWidget::signalSelectAllGlobal);
      contextMenu->addAction(action);
    }

    {

      QAction *action = new QAction(tr("Cut selected topic(s)"), tcw);
      action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_X));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:edit-cut.svg")));
      connect(action, &QAction::triggered, tcw, &TrackContentWidget::signalCutTopics);
      contextMenu->addAction(action);
    }

    {
      QAction *action = new QAction(tr("Copy selected topic(s)"), tcw);
      action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_C));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:edit-copy.svg")));
      connect(action, &QAction::triggered, tcw, &TrackContentWidget::signalCopyTopics);
      contextMenu->addAction(action);
    }

    {
      QAction *action = new QAction(tr("Paste topic(s) at indicator position"), tcw);
      action->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_V));
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
      action->setShortcutVisibleInContextMenu(true);
#endif
      action->setIcon(QIcon(QStringLiteral("icon:edit-paste.svg")));
      connect(action, &QAction::triggered, tcw, &TrackContentWidget::signalPasteTopics);
      contextMenu->addAction(action);
    }


    contextMenu->popup(event->globalPos());
  }
}


//#error FIXME: Er denkt ich dragge, wenn ich resize! verstaendlich.... Loesung???
void SelectHandler::mouseReleaseEvent(QMouseEvent *event) // an Entry is selected if pressed and release both were executed on a valid & the same Entry
{
  QPoint clickedPos = tcw->mapFromGlobal(event->globalPos());
  int clickedPosX = clickedPos.x();
  int clickedTime = tcw->m_tools->getTime(clickedPosX, tcw->m_isFilter);

  TrackEntry *releasedEntry = tcw->getTrackEntryAt(clickedTime);

  if (!QGuiApplication::keyboardModifiers().testFlag(Qt::ControlModifier) && (!m_pressedEntry || !releasedEntry)) // do not unselect if ctrl active
  {
    emit tcw->signalUnselectAll();
    emit tcw->signalTrackEntrySelectionChanged(nullptr);
  }
  else
  {
    if (m_pressedEntry == releasedEntry)
      tcw->selectEntry(releasedEntry);
  }
}


void SelectHandler::keyPressEvent(QKeyEvent *event)
{
  if (event->key() == Qt::Key_Escape)
  {
    m_pressedEntry = nullptr;
    emit tcw->signalUnselectAll();
    emit tcw->signalTrackEntrySelectionChanged(nullptr);
  }
}
} // namespace LtsScriptTimeline