public async Task <IEnumerable <ErrorMessage> > ValidateAsync(ValidationContext context)
{
var result = Array.Empty <ErrorMessage>();
var property = context.WorkItem.Properties.FirstOrDefault(p => p.Name == PropertyDescriptor.Name);
if (property != null)
{
var propertyContext = new PropertyValidationContext(context, property);
var(success, code, message) = await ValidatePropertyAsync(propertyContext);
if (!success)
{
result = new ErrorMessage[] {
new ErrorMessage(Source, code, message, context.WorkItem.ProjectCode, context.WorkItem.Id, property.Name),
};
}
}
return(result);
}
protected virtual Task <(bool success, string code, string message)> ValidatePropertyAsync(PropertyValidationContext context) => Task.FromResult(ValidateProperty(context));
protected override (bool success, string code, string message) ValidateProperty(PropertyValidationContext context)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
string code = string.Empty;
string message = string.Empty;
var hasValue = !string.IsNullOrWhiteSpace(context.Property?.Value);
if (!hasValue)
{
code = string.Empty;
message = $"Property {PropertyDescriptor.Name} cannot be empty";
}
return(hasValue, code, message);
}
protected override (bool success, string code, string message) ValidateProperty(PropertyValidationContext context)
{
var code = string.Empty;
var message = string.Empty;
bool result = true;
var property = context.Property;
if (property.DataType == "String")
{
property.Value(out string valueAsString);
int length = valueAsString.Length;
if (length < ValidatorDescriptor.Min || length > ValidatorDescriptor.Max)
{
code = string.Empty;
message = $"Property {PropertyDescriptor.Name} cannot be empty";
result = false;
}
}
return(result, code, message);
}
protected override async Task <(bool success, string code, string message)> ValidatePropertyAsync(PropertyValidationContext context)
{
var success = true;
var code = string.Empty;
var message = string.Empty;
foreach (var value in MultiValues(PropertyDescriptor, context.Property))
{
if (value != Property.NullValue) // null values are not checked against a value provider. MandatoryValidator is used for that.
{
if (!ValueProvider.IsValidEncoding(value))
{
success = false;
code = string.Empty;
message = $"Property {PropertyDescriptor.Name} value '{value}' does not match allowed encoding for ValueProvider '{ValueProvider.GetType().Name}'.";
}
else
{
var exists = await ValueProvider.ValueExistsAsync(value);
if (!exists)
{
success = false;
code = string.Empty;
message = $"Property {PropertyDescriptor.Name} value '{value}' does not match one of the allowed values.";
}
}
}
}
return(success, code, message);
}