#pragma once

#include <filesystem>
#include <chrono>
#include <set>
#include <optional>

#include <QObject>
#include <QTimer>

#include <qqmlintegration.h>

class FileSelector : public QObject {
  Q_OBJECT;
  Q_PROPERTY(QString directory READ directory WRITE setDirectory NOTIFY directoryChanged REQUIRED);
  Q_PROPERTY(unsigned int epoch READ epoch WRITE setEpoch NOTIFY epochChanged REQUIRED);
  Q_PROPERTY(QString seed READ seed WRITE setSeed NOTIFY seedChanged);
  Q_PROPERTY(QString selected READ selected NOTIFY selectedChanged);
  QML_ELEMENT;

public:
  explicit FileSelector(QObject* parent = nullptr);

  QString directory() const;
  void setDirectory(QString directory);

  unsigned int epoch() const;
  void setEpoch(unsigned int epoch);

  QString seed() const;
  void setSeed(QString seed);

  QString selected() const;

signals:
  void directoryChanged();
  void epochChanged();
  void seedChanged();
  void selectedChanged();

private slots:
  void onTimeout();

private:
  std::optional<std::filesystem::path> mDirectory;
  std::optional<std::chrono::milliseconds> mEpoch;
  std::set<std::filesystem::path> mFiles;
  QString mSeed;
  QTimer timer;

  void update();
};