public ReservationDurations(IEnumerable <IReservation> reservations, IEnumerable <ICost> costs, DateTime sd, DateTime ed)
{
var dateRange = DateRange.ExpandRange(reservations, sd, ed);
var items = ReservationDateRangeItem.GetReservationDateRangeItems(reservations, costs);
var range = new ReservationDateRange(items, dateRange);
CreateItems(range);
}
private void CreateItems(ReservationDateRange range)
{
_range = range;
_items = new Dictionary <int, List <ReservationDurationItem> >();
_reservations = new List <ReservationDateRangeItem>();
_anomalies = new List <ReservationDateRangeItem>();
if (_range.Count == 0)
{
throw new NullReferenceException("range.Count is zero. This should be checked for and handled before this point.");
}
foreach (int resourceId in _range.Select(x => x.ResourceID).Distinct())
{
_range.Clear();
/**********
* each priority group must be mutually exclusive, i.e. no single reservation should
* be in two groups, and all reservations must be included across all groups
*
* "started normal" means started on or after the scheduled start time
*
* "ended normal" means ended on or before the scheduled end time
*
* the lowest priority group is written to the array first, then the next highest
* priorty group is written over that and then the next until all groups have been written
***********/
var query = _range.Where(x => x.ResourceID == resourceId).ToList();
// These are normal reservations for which we can calculate ranges.
List <ReservationDateRangeItem> include = new List <ReservationDateRangeItem>();
// These are reservations that we can't calculate ranges for, probably because they are still running.
List <ReservationDateRangeItem> exclude = new List <ReservationDateRangeItem>();
// Priority 0 (lowest): unstarted, cancelled
include.AddRange(_range.Apply(0, query.Where(x => !x.IsStarted && !x.IsActive).OrderBy(x => x.LastModifiedOn).ToList()));
// Priority 1: unstarted, uncancelled
include.AddRange(_range.Apply(1, query.Where(x => !x.IsStarted && x.IsActive).OrderBy(x => x.LastModifiedOn).ToList()));
// Priority 2: started normal, ended normal
include.AddRange(_range.Apply(2, query.Where(x => x.IsStarted && x.ActualBeginDateTime.HasValue && x.ActualBeginDateTime.Value >= x.BeginDateTime && x.ActualEndDateTime.HasValue && x.ActualEndDateTime.Value <= x.EndDateTime).OrderBy(x => x.LastModifiedOn).ToList()));
// Priority 3: started early, ended normal
include.AddRange(_range.Apply(3, query.Where(x => x.IsStarted && x.ActualBeginDateTime.HasValue && x.ActualBeginDateTime.Value < x.BeginDateTime && x.ActualEndDateTime.HasValue && x.ActualEndDateTime.Value <= x.EndDateTime).OrderBy(x => x.ActualBeginDateTime).ToList()));
// Priority 4: started normal, ended late
include.AddRange(_range.Apply(4, query.Where(x => x.IsStarted && x.ActualBeginDateTime.HasValue && x.ActualBeginDateTime.Value >= x.BeginDateTime && x.ActualEndDateTime.HasValue && x.ActualEndDateTime.Value > x.EndDateTime).OrderByDescending(x => x.ActualBeginDateTime).ToList()));
// Priority 5: started early, ended late
include.AddRange(_range.Apply(5, query.Where(x => x.IsStarted && x.ActualBeginDateTime.HasValue && x.ActualBeginDateTime.Value <x.BeginDateTime && x.ActualEndDateTime.HasValue && x.ActualEndDateTime.Value> x.EndDateTime).OrderBy(x => x.LastModifiedOn).ToList()));
// catch reservations that were not selected in one of the above groups (includes reservations that were started but have not ended yet)
exclude = query.Where(x => x.IsStarted && (!x.ActualBeginDateTime.HasValue || !x.ActualEndDateTime.HasValue)).ToList();
_reservations.AddRange(include);
_anomalies.AddRange(exclude);
int count = include.Count() + exclude.Count();
int totalCount = query.Count();
if (count < totalCount)
{
throw new InvalidOperationException(string.Format("ReservationDuration: Reservation count validation failed. Some reservations not selected. [ResourceID = {0}, StartDate = {1:yyyy-MM-dd HH:mm:ss}, EndDate = {2:yyyy-MM-dd HH:mm:ss}, count = {3}, totalCount = {4}]", resourceId, _range.DateRange.StartDate, _range.DateRange.EndDate, count, totalCount));
}
else if (count > totalCount)
{
throw new InvalidOperationException(string.Format("ReservationDuration: Reservation count validation falied. Some reservations selected more than once. [ResourceID = {0}, StartDate = {1:yyyy-MM-dd HH:mm:ss}, EndDate = {2:yyyy-MM-dd HH:mm:ss}, count = {3}, totalCount = {4}]", resourceId, _range.DateRange.StartDate, _range.DateRange.EndDate, count, totalCount));
}
var items = new List <ReservationDurationItem>();
var ordered = include.OrderBy(x => x.ChargeBeginDateTime).ThenBy(x => x.ChargeEndDateTime).ThenBy(x => x.ReservationID).ToList();
foreach (ReservationDateRangeItem i in ordered)
{
var utilized = _range.GetUtilizedDuration(i.ReservationID);
items.Add(new ReservationDurationItem(i, utilized));
}
_items.Add(resourceId, items);
}
}
public ReservationDurations(ReservationDateRange range)
{
CreateItems(range);
}