#include "PaneDragController.h"

using namespace Qt::Literals::StringLiterals;

PaneDragController::PaneDragController(QObject* parent)
    : QObject(parent)
{
}

AppModel* PaneDragController::model() const
{
  return m_model;
}

void PaneDragController::setModel(AppModel* model)
{
  if (m_model == model) {
    return;
  }
  m_model = model;
  emit modelChanged();
}

QString PaneDragController::classifyZone(const qreal nx, const qreal ny)
{
  if (nx < 1.0 / 3.0) {
    return u"left"_s;
  }
  if (nx > 2.0 / 3.0) {
    return u"right"_s;
  }
  if (ny < 1.0 / 3.0) {
    return u"up"_s;
  }
  if (ny > 2.0 / 3.0) {
    return u"down"_s;
  }
  return u"center"_s;
}

void PaneDragController::executeDrop(const QString& draggedPaneId,
                                     const QString& targetPaneId,
                                     const QString& zone) const
{
  if (m_model == nullptr || draggedPaneId.isEmpty()
      || targetPaneId.isEmpty() || zone.isEmpty()) {
    return;
  }
  if (zone == u"center"_s) {
    m_model->swapPanes(draggedPaneId, targetPaneId);
  } else {
    m_model->movePaneBeside(draggedPaneId, targetPaneId, zone);
  }
}