#ifndef RESERVATION_MANAGER_H
#define RESERVATION_MANAGER_H

#include "day_manager.h"

class ReservationManager {
private:
  DayManager dayReference_;
  QMap<qsizetype /* index */, DayManager> days_;
  qsizetype createdRecords_;
  qsizetype dayBound_;
  qsizetype dayRange_;
  qsizetype excludedDays_;
  qsizetype lastIndex_;

public:
  inline ReservationManager() noexcept;
  explicit ReservationManager(qsizetype dayRange, qsizetype dayBound,
                              const DayManager &reference);

  inline DayManager reference() const noexcept;
  inline qsizetype createdRecords() const noexcept;
  inline void setDayBound(qsizetype dayBound);
  inline void setDayRange(qsizetype dayRange);
  void setReference(const DayManager &manager);

  qsizetype calculateAvailableDaysCount() const;
  qsizetype calculatePossibleReservations(qint64 requiredMs) const;
  qsizetype calculateAvailableSlotsCount() const;

  QPair<QDateTime, QTime> reserve(const QTime &duration);

private:
  DayManager &dayManager(qsizetype dayIndex);
  QPair<QDateTime, QTime> reserve(qsizetype dayIndex, const QTime &duration);
  void prepareDaysRange();

private:
  friend class ReservationManagerTest;
};

ReservationManager::ReservationManager() noexcept
    : createdRecords_(0), dayBound_(-1), excludedDays_(0), lastIndex_(-1),
      dayReference_(DayManager()) {}

DayManager ReservationManager::reference() const noexcept {
  return dayReference_;
}

inline qsizetype ReservationManager::createdRecords() const noexcept {
  return createdRecords_;
}

void ReservationManager::setDayBound(qsizetype dayBound) {
  dayBound_ = dayBound;
}

void ReservationManager::setDayRange(qsizetype dayRange) {
  dayRange_ = dayRange;
}

#endif // RESERVATION_MANAGER_H