/// <summary>
/// Given a list of reservations and a reservable item return the availability
/// for the given date/time. The reservable item has been reserved by the reservations
/// in the list.
/// </summary>
/// <param name="reservations"></param>
/// <param name="reservable"></param>
/// <param name="dateTime"></param>
/// <returns></returns>
public Reservability GetReservability(IList <Reservation> reservations, Table reservable, DateTime dateTime, Reservation excludedReservation, TimeSpan newDuration)
{
Reservation prev = null;
Reservation next = null;
if (reservations != null)
{
foreach (Reservation reservation in reservations)
{
if (Reservability.getDateTimeZeroed(reservation.Arrival) < Reservability.getDateTimeZeroed(dateTime))
{
if (prev == null || ((Reservability.getDateTimeZeroed(prev.Arrival) + prev.Duration) < (Reservability.getDateTimeZeroed(reservation.Arrival) + reservation.Duration)))
{
if (excludedReservation == null || (!reservation.Equals(excludedReservation)))
{
prev = reservation;
}
}
}
else
{
if ((next == null || (Reservability.getDateTimeZeroed(next.Arrival) >
Reservability.getDateTimeZeroed(reservation.Arrival))))
{
if (excludedReservation == null || (!reservation.Equals(excludedReservation)))
{
next = reservation;
}
}
}
}
}
return(new Reservability(reservable, dateTime, newDuration, prev, next));
}
/// <summary>
/// Adds to locations collection of reservations, saves location's state to database.
/// </summary>
/// <param name="newReservation"></param>
public void AddReservation(Reservation newReservation)
{
if (newReservation.ReservedList.Count == 0)
{
throw new ReservationException("No tables.");
}
if (newReservation.GuestCount < 1)
{
throw new ReservationException("Guest count cannot be less than one");
}
foreach (Table table in newReservation.ReservedList)
{
IList <Reservation> reservationsByTable = table.ReservationsThatUseMe;
Reservability availability = this.GetReservability(reservationsByTable, table, newReservation.Arrival, null, newReservation.Duration);
if (!availability.FullyAvailable)
{
throw new ReservationException(string.Format("Reservation not added because {0} is not available.", table.ToString()));
}
}
newReservation.ParentLocation = this;
newReservation.Save();
Reservations.Add(newReservation);
// cascade
this.Save();
}
internal Reservability(Table reservable, DateTime inspectionDateTime, TimeSpan duration,
Reservation previousReservation, Reservation nextReservation)
{
_reservable = reservable;
_inspectionDateTime = Reservability.getDateTimeZeroed(inspectionDateTime);
_duration = duration;
_previousReservation = previousReservation;
_nextReservation = nextReservation;
}
/// <summary>
/// Returns a value that indicates either the number of reservable items available,
/// or the number of guest seatings available.
/// </summary>
/// <param name="session"></param>
/// <param name="dateTime"></param>
/// <param name="guest"></param>
/// <returns></returns>
private int GetAvailability(Session session, DateTime dateTime, bool guest, TimeSpan duration)
{
int total = 0;
IList <Table> reservables = GetReservables(session, dateTime, duration);
foreach (Table reservable in reservables)
{
Reservability reservability = GetReservability(reservable, dateTime, null, duration);
if (reservability.FullyAvailable)
{
if (guest)
{
total += reservable.MaxGuests;
}
else
{
total++;
}
}
}
return(total);
}