/// <exception cref="ArgumentException"></exception>
public Route Analyze()
{
lastAwy = null;
routeInput.Skip(1).ForEach(i =>
{
if (lastAwy == null)
{
// This one may be airway or waypoint.
if (!TryParseAwy(i) && !TryParseWpt(i))
{
throw new ArgumentException(
$"{i} is not a valid waypoint or airway identifier");
}
}
else
{
//this one must be wpt
if (!TryParseWpt(i))
{
throw new ArgumentException(
$"Cannot find waypoint {i} on airway {lastAwy}");
}
}
});
if (lastAwy != null)
{
// That last string in routeInput is an airway.
throw new ArgumentException($"There should be a waypoint after airway {lastAwy}.");
}
return(rte);
}
private RouteString RemoveIcaos(RouteString route)
{
bool firstIsIcao = route[0] == origIcao;
bool lastIsIcao = route.Last() == destIcao;
int skipHead = firstIsIcao ? 1 : 0;
int skipTail = lastIsIcao ? 1 : 0;
return(route
.Skip(skipHead)
.Take(route.Count - skipHead - skipTail)
.ToRouteString());
}