public PartSubtype FindBestSubtype(IEnumerable <PartSubtype> subtypes, IEnumerable <string> resourceNamesOnPart)
{
// No managed resources, so no way to guess subtype
if (!subtypes.Any(s => s.HasTank))
{
return(subtypes.MaxBy(subtype => subtype.defaultSubtypePriority));
}
// Now use resources
// This finds all the managed resources that currently exist on teh part
IEnumerable <string> managedResourceNames = subtypes.SelectMany(s => s.ResourceNames).Distinct();
string[] managedResourcesOnPart = managedResourceNames.Intersect(resourceNamesOnPart).ToArray();
// If any of the part's current resources are managed, look for a subtype which has all of the managed resources (and all of its resources exist)
// Otherwise, look for a structural subtype (no resources)
if (managedResourcesOnPart.Any())
{
PartSubtype bestSubtype = null;
foreach (PartSubtype subtype in subtypes)
{
if (!subtype.HasTank)
{
continue;
}
if (!subtype.ResourceNames.SameElementsAs(managedResourcesOnPart))
{
continue;
}
if (bestSubtype.IsNotNull() && subtype.defaultSubtypePriority <= bestSubtype.defaultSubtypePriority)
{
continue;
}
bestSubtype = subtype;
}
if (bestSubtype.IsNotNull())
{
return(bestSubtype);
}
}
else
{
PartSubtype bestSubtype = null;
foreach (PartSubtype subtype in subtypes)
{
if (subtype.HasTank)
{
continue;
}
if (bestSubtype.IsNotNull() && subtype.defaultSubtypePriority <= bestSubtype.defaultSubtypePriority)
{
continue;
}
bestSubtype = subtype;
}
if (bestSubtype.IsNotNull())
{
return(bestSubtype);
}
}
// No useful way to determine correct subtype, just pick first
return(subtypes.MaxBy(subtype => subtype.defaultSubtypePriority));
}
