private async Task <IReadOnlyList <ModifierNodeViewModel> > CreateFormNodesAsync(
IStat stat, Form form, PathDefinition path)
{
var nodes = new List <ModifierNodeViewModel>();
var formNodes = await _calculator.GetFormNodeCollectionAsync(stat, form, path);
foreach (var(node, modifier) in formNodes)
{
var resultNode = new CalculationNodeViewModel(stat)
{
Value = await _calculator.GetNodeValueAsync(node)
};
if (resultNode.Value is null && stat.DataType != typeof(bool))
{
continue;
}
nodes.Add(new ModifierNodeViewModel(form, modifier.Source, resultNode));
}
if (form == Form.BaseAdd || form == Form.Increase)
{
return(nodes
.GroupBy(n => (n.Form, n.IsLocal, n.ModifierSource.ToString(), n.ModifierSource.SourceName))
.Select(g => g.Aggregate(Accumulate))
.ToList());
}
return(nodes);
ModifierNodeViewModel Accumulate(ModifierNodeViewModel l, ModifierNodeViewModel r)
{
l.Node.Value = l.Node.Value.SumWhereNotNull(r.Node.Value);
return(l);
}
}
public ModifierNodeViewModel(Form form, ModifierSource modifierSource, CalculationNodeViewModel node)
{
Form = form;
ModifierSource = modifierSource;
Node = node;
}