public static IEnumerable <LocationCallEvent> GetEvents(IList <CallHistory> callHistories, CallHistoryFilter filter)
{
foreach (var call in callHistories)
{
if ((call.FromLocationId == call.ToLocationId && filter.IsMatch(call)) || filter.IsFromMatch(call))
{
yield return
(Create(CallEventType.Start, call, c => Tuple.Create(c.FromLocationId, c.FromLocationName)));
yield return
(Create(CallEventType.End, call, c => Tuple.Create(c.FromLocationId, c.FromLocationName)));
}
if (call.FromLocationId != call.ToLocationId && filter.IsToMatch(call))
{
yield return
(Create(CallEventType.Start, call, c => Tuple.Create(c.ToLocationId, c.ToLocationName)));
yield return
(Create(CallEventType.End, call, c => Tuple.Create(c.ToLocationId, c.ToLocationName)));
}
}
}
public static IEnumerable <LocationCallEvent> GetOrderedEvents(IList <CallHistory> callHistories,
CallHistoryFilter filter)
{
return(GetEvents(callHistories, filter).OrderBy(e => e.EventTime).ThenBy(e => (int)e.EventType));
}
