#ifndef ITEMDETAILMAPPER_H
#define ITEMDETAILMAPPER_H

#include <QComboBox>
#include <QDataWidgetMapper>
#include <QStringListModel>
#include <QWidget>

class QGridLayout;
class QLabel;
class QLineEdit;
class QDoubleSpinBox;
class QSpinBox;
class QPushButton;
class QAbstractItemModel;
class QItemSelectionModel;
class QTableView;

class ItemDetailMapper : public QWidget {
  Q_OBJECT
 public:
  explicit ItemDetailMapper(QTableView* tableView, QWidget* parent = nullptr);

  bool submit();
  void revert();

 signals:
  void contentChanged(const QString text);

 private slots:
  void onCurrentIndexChanged(const QModelIndex& current, const QModelIndex& previous);
  void rowsInserted(const QModelIndex& parent, int start, int end);
  void rowsRemoved(const QModelIndex& parent, int start, int end);
  void toPrevious();
  void toNext();
  void updateButtons(int row);
  void emitContentChanged(const QModelIndex& currentIndex);

 private:
  /// *** members ***
  /// Model stuff
  QTableView* m_tableView               = nullptr;
  QAbstractItemModel* m_model           = nullptr;
  QItemSelectionModel* m_selectionModel = nullptr;

  std::unique_ptr<QDataWidgetMapper> m_mapper;

  /// GUI elements
  QGridLayout* m_layout;
  QList<QWidget*> editControls;

  QLabel* m_typeLabel;
  QComboBox* m_typeBox;
  QStringListModel* m_typeModel = nullptr;

  QLabel* m_amountLabel = nullptr;
  QSpinBox* m_amountBox = nullptr;

  QLabel* m_factorLabel       = nullptr;
  QDoubleSpinBox* m_factorBox = nullptr;

  QPushButton* m_nextButton;
  QPushButton* m_previousButton;

  void setupConnections();
  void setupLayout();
  void setupWidgets();

  void addWidgetsWithMapping(const int row);
  QPair<QWidget*, QWidget*> createWidgetPairForColumn(const int column);
  void clearEditWidgets();
};

#endif  // ITEMDETAILMAPPER_H