private static string WriteRouteConstraint(RouteConstraint constraint)
{
if (constraint is AlphaConstraint)
{
return($@"
if(string.IsNullOrWhiteSpace({constraint.ParameterName}) || {constraint.ParameterName}.Any(x=>char.IsNumber(x)))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} must only contain characters that are not numbers."");
}}" );
}
else if (constraint is BoolConstraint)
{
return($@"
if(!bool.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an bool."");
}}" );
}
else if (constraint is DateTimeConstraint)
{
return($@"
if(!DateTime.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an DateTime."");
}}" );
}
else if (constraint is DecimalConstraint)
{
return($@"
if(!decimal.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an decimal."");
}}" );
}
else if (constraint is FloatConstraint)
{
return($@"
if(!float.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an float."");
}}" );
}
else if (constraint is GuidConstraint)
{
return($@"
if(!Guid.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an Guid."");
}}" );
}
else if (constraint is IntConstraint)
{
return($@"
if(!int.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an int."");
}}" );
}
else if (constraint is LengthConstraint)
{
var value = constraint.GetConstraintValue();
if (value.Contains(','))
{
var split = value.Split(',');
string minL = split[0];
string maxL = split[1];
return($@"
if({constraint.ParameterName}.Length <= {minL} || {constraint.ParameterName}.Length >= {maxL})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a length that is not between {minL} and {maxL}."");
}}" );
}
else
{
return($@"
if({constraint.ParameterName}.Length == {value})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a length that is not {value}."");
}}" );
}
}
else if (constraint is LongConstraint)
{
return($@"
if(!long.TryParse({constraint.ParameterName}.ToString(),out _))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not parse into an long."");
}}" );
}
else if (constraint is MaxConstraint)
{
var value = constraint.GetConstraintValue();
return($@"
if({constraint.ParameterName} >= {value})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a value more than {value}."");
}}" );
}
else if (constraint is MaxLengthConstraint)
{
var value = constraint.GetConstraintValue();
return($@"
if({constraint.ParameterName}.Length >= {value})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a length greater than {value}."");
}}" );
}
else if (constraint is MinConstraint)
{
var value = constraint.GetConstraintValue();
return($@"
if({constraint.ParameterName} <= {value})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a value less than {value}."");
}}" );
}
else if (constraint is MinLengthConstraint)
{
var value = constraint.GetConstraintValue();
return($@"
if({constraint.ParameterName}.Length <= {value})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a length less than {value}."");
}}" );
}
else if (constraint is RangeConstraint)
{
var value = constraint.GetConstraintValue();
var split = value.Split(',');
string minL = split[0];
string maxL = split[1];
return($@"
if({constraint.ParameterName} <= {minL} || {constraint.ParameterName} >= {maxL})
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} has a value that is not between {minL} and {maxL}."");
}}" );
}
else if (constraint is RegexConstraint)
{
var value = constraint.GetConstraintValue();
return($@"
if(!(new Regex(@""{value}"").IsMatch({constraint.ParameterName})))
{{
throw new InvalidRouteException(""Parameter {constraint.ParameterName} does not follow the regex \""{value}\""."");
}}" );
}
else if (constraint is RequiredConstraint)
{
return(null);
}
else
{
return($@"#error A route constraint of type {constraint.GetType().Name} and text of {constraint.Constraint} is not supported");
}
}