private static List <RoomAvailabilityIntervalDto> GetAvailabilityIntervalsForQuery(
GetAvailabilityByDateRange query,
ImmutableList <RoomAvailabilityIntervalDto> occupiedIntervalsForRoom)
{
var roomAvailabilityIntervals = new List <RoomAvailabilityIntervalDto>(occupiedIntervalsForRoom);
var previousEnd = query.StartDateUtc;
foreach (var occupiedInterval in occupiedIntervalsForRoom)
{
if (previousEnd < occupiedInterval.Start)
{
roomAvailabilityIntervals.Add(new RoomAvailabilityIntervalDto
{
Start = previousEnd,
End = occupiedInterval.Start,
IsOccupied = false,
});
}
previousEnd = occupiedInterval.End;
}
if (previousEnd < query.EndDateUtc)
{
roomAvailabilityIntervals.Add(new RoomAvailabilityIntervalDto
{
Start = previousEnd,
End = query.EndDateUtc,
IsOccupied = false
});
}
return(roomAvailabilityIntervals);
}
private async Task <IReadOnlyList <RoomOccupationReadModel> > GetAllRoomOccupationsFor(
GetAvailabilityByDateRange query)
{
return(await _dbReadContext.RunAsync(factory =>
{
var roomRepository = factory.CreateRoomRepository();
return roomRepository.GetOccupationsBetween(query.StartDateUtc, query.EndDateUtc);
}));
}
public async Task <IReadOnlyList <RoomAvailabilityDto> > ExecuteQueryAsync(
GetAvailabilityByDateRange query,
CancellationToken cancellationToken)
{
var rooms = await GetAllRooms();
_roomOccupations = await GetAllRoomOccupationsFor(query);
return(rooms.Map(room => GetAvailabilityForRoom(query, room)).ToImmutableList());
}
private RoomAvailabilityDto GetAvailabilityForRoom(GetAvailabilityByDateRange query, RoomReadModel room)
{
var occupiedIntervalsForRoom = _roomOccupations
.Where(o => o.AggregateId == room.AggregateId)
.Map(occupation => new RoomAvailabilityIntervalDto
{
Start = occupation.StartDate,
End = occupation.EndDate,
IsOccupied = true,
})
.ToImmutableList();
var roomAvailabilityIntervals = GetAvailabilityIntervalsForQuery(query, occupiedIntervalsForRoom);
return(new RoomAvailabilityDto
{
RoomId = room.GetIdentity().GetGuid(),
RoomNumber = room.RoomNumber,
Details = roomAvailabilityIntervals.OrderBy(r => r.Start).ToList(),
IsAvailable = roomAvailabilityIntervals.Count == 1 && !roomAvailabilityIntervals.Single().IsOccupied,
});
}
