#ifndef DIALOGCONTROLPASSWORD_H
#define DIALOGCONTROLPASSWORD_H

#include <QDialog>
#include <QShowEvent>
#include <QString>
#include <QVector>

#include <functional>

class QLabel;
class QKeyEvent;

namespace Ui {
class DialogControlPassword;
}

class DialogControlPassword : public QDialog
{
    Q_OBJECT

public:
    static const int kPasswordLength = 6;

    explicit DialogControlPassword(QWidget* parent = nullptr);
    ~DialogControlPassword() override;

    void SetTitle(const QString& title);
    QString Password() const;
    void SetError(const QString& text);
    void SetPasswordChecker(const std::function<bool(const QString&)>& checker);

protected:
    void showEvent(QShowEvent* event) override;
    void keyPressEvent(QKeyEvent* event) override;

private slots:
    void on_btnOK_clicked();
    void on_btnCancel_clicked();

private:
    void ApplyUiFont();
    void BuildDigitBoxes();
    void BuildKeypad();
    void AppendDigit(QChar digit);
    void RemoveLastDigit();
    void ClearPassword();
    void RefreshDigits();
    void UpdateOkEnabled();
    void TryAccept();

    Ui::DialogControlPassword* ui = nullptr;
    std::function<bool(const QString&)> m_passwordChecker;
    QString m_password;
    QVector<QLabel*> m_digitLabels;
};

#endif // DIALOGCONTROLPASSWORD_H