public async Task <bool> EvaluateConditionAsync(
LazyInput lazyInput,
IContext context,
CancellationToken cancellationToken)
{
string comparisonValue;
switch (Source)
{
case ValueSource.Input:
comparisonValue = lazyInput.SerializedContent;
break;
case ValueSource.Context:
comparisonValue = await context.GetVariableAsync(Variable, cancellationToken);
break;
case ValueSource.Intent:
comparisonValue = (await lazyInput.GetIntentAsync())?.Name;
break;
case ValueSource.Entity:
comparisonValue = (await lazyInput.GetEntityValue(Entity))?.Value;
break;
default:
throw new ArgumentOutOfRangeException();
}
switch (Comparison.GetComparisonType())
{
case ComparisonType.Unary:
var unaryComparisonFunc = Comparison.ToUnaryDelegate();
return(unaryComparisonFunc(comparisonValue));
case ComparisonType.Binary:
var binaryComparisonFunc = Comparison.ToBinaryDelegate();
switch (Operator)
{
case ConditionOperator.Or:
return(Values.Any(v => binaryComparisonFunc(comparisonValue, v)));
case ConditionOperator.And:
return(Values.All(v => binaryComparisonFunc(comparisonValue, v)));
default:
throw new ArgumentOutOfRangeException();
}
default:
throw new ArgumentOutOfRangeException();
}
}
private async Task <string> GetEntityVariableAsync(LazyInput input, string entityName, string entityProperty)
{
var entity = await input.GetEntityValue(entityName);
if (entity == null)
{
return(null);
}
switch (entityProperty)
{
case "id":
return(entity.Id);
case "name":
return(entity.Name);
case "value":
return(entity.Value);
}
return(null);
}