/// <summary>
/// Parses the given request using specific settings.
/// </summary>
/// <param name="request"> The request. </param>
/// <param name="settings">The settings.</param>
/// <returns>
/// An IParseResult.
/// </returns>
public IParseResult Parse(HttpRequest request, RequestParserSettings settings)
{
// Process all the registered parameters
IEnumerable <RegistrationProcessResult> processResults = registrations.Select(r => ProcessRegistration(request, settings, r)).ToList();
if (processResults.Any(r => !r.Success))
{
}
}
private RegistrationProcessResult ProcessRegistration(HttpRequest request, RequestParserSettings settings, RequestRegistration registration)
{
bool parseFailed = false;
foreach (IRequestTokenExtractor extractor in registration.TokenExtractors)
{
// Extract value
string extracted = extractor.Extract(request);
if (extracted == null)
{
continue;
}
// Parse
if (!registration.TryParser(extracted, out object parsed))
{
parseFailed = true;
if (settings.SkipFailedTokenParses)
{
continue;
}
return(new RegistrationProcessResult
{
Success = false,
Errors = new List <ValidationError>
{
new ValidationError($"Value provided ({extracted}) for parameter ({registration.Name}) was invalid and could not be parsed")
}
});
}
// Validate
IEnumerable <ValidationError> errors = registration.Validator?.Invoke(parsed);
// Valid
if (errors == null || !errors.Any())
{
return(new RegistrationProcessResult
{
Success = true,
UsedDefault = false,
Value = parsed
});
}
// Invalid
RegistrationProcessResult invalidResult = new RegistrationProcessResult
{
Success = false
};
invalidResult.Errors.Add(new ValidationError($"Parameter ({registration.Name}) failed validation..."));
foreach (ValidationError error in errors)
{
invalidResult.Errors.Add(error);
}
return(new RegistrationProcessResult
{
Success = true,
UsedDefault = false,
Value = parsed
});
}
// Value(s) extracted but not parsed
if (parseFailed)
{
return(new RegistrationProcessResult
{
Success = false,
Errors = new List <ValidationError>
{
new ValidationError($"Value(s) provided for parameter ({registration.Name}) were invalid and could not be parsed")
}
});
}
// Value missing and required
if (registration.Required)
{
return(new RegistrationProcessResult
{
Success = false,
Errors = new List <ValidationError>
{
new ValidationError($"Required parameter ({registration.Name}) missing, it can be specified using:\r\n{string.Join("\r\n", registration.TokenExtractors.Select(e => $"\t HTTP request {e.ExtractsFrom} with a key of {e.Key}"))}")
}
});
}
// Value missing and optional
return(new RegistrationProcessResult
{
Success = true,
UsedDefault = true,
Value = registration.DefaultValue
});
}
