private MethodMetadata GetMethodMetadata(MethodInfo method, MetadataValueProvider provider, IEnumerable <IRestValueFormatter> valueFormatters)
{
method.AssertNotNull(nameof(method));
provider.AssertNotNull(nameof(provider));
var values = provider.Nested(method.GetCustomAttributes());
if (!values.TryGetRequestMethod(out var requestMethod))
{
throw new Exception("method not setted");//TODO msg
}
var parameters = method.GetParameters().Where(x => !IsCancellationToken(x));
var namePrefix = values.GetParameterPrefix();
var methodValueFormatters = valueFormatters.Union(method.GetCustomAttributes <Attribute>().OfType <IRestValueFormatter>()).ToArray();
return(new MethodMetadata(method)
{
Request = new RequestMetadata(requestMethod)
{
Route = values.GetRequestRoutePrefix() + values.GetRequestRoute(),
Timeout = values.GetRequestTimeout(),
ContentKind = values.GetRequestContentKind(),
Parameters = parameters.SelectMany(x => GetRequestParameters(x.Name, namePrefix, x.ParameterType, x.Name, methodValueFormatters, values.Nested(x.GetCustomAttributes()))).ToArray()
},
Response = new ResponseMetadata
{
Parameters = GetResponseParameters(method.ReturnParameter, values).ToArray(),
IsAsync = typeof(Task).IsAssignableFrom(method.ReturnType),
ResultType = GetResultType(method.ReturnType)
}
});
}
private IEnumerable <ResponseParameterMetadata> GetResponseParameters(Type targetType, MetadataValueProvider provider)
{
targetType.AssertNotNull(nameof(targetType));
provider.AssertNotNull(nameof(provider));
if (TypeDescriptor.GetProperties(targetType).OfType <PropertyDescriptor>().SelectMany(x => x.Attributes.OfType <IParameterDefinition>()).Any())
{
foreach (var property in TypeDescriptor.GetProperties(targetType).OfType <PropertyDescriptor>())
{
var paramDef = property.Attributes.OfType <IParameterDefinition>().FirstOrDefault();
if (paramDef == null)
{
continue;
}
var propertyValues = provider.Nested(property.Attributes);
var propertyMetadata = GetResponseParameter(property.PropertyType, paramDef.ParameterKind, propertyValues.Nested(TypeDescriptor.GetAttributes(targetType)));
propertyMetadata.ModelPropertyName = property.Name;
propertyMetadata.TypeConverter = property.Converter;
yield return(propertyMetadata);
}
}
else
{
var bodyParam = GetResponseParameter(targetType, RequestParameterKind.Body, provider);
yield return(bodyParam);
}
}
private IEnumerable <ResponseParameterMetadata> GetResponseParameters(ParameterInfo parameter, MetadataValueProvider provider)
{
var values = provider.Nested(parameter.GetCustomAttributes(true));
var resultType = GetResultType(parameter.ParameterType);
if (resultType == typeof(void))
{
yield break;
}
if (resultType.IsAssignableFrom(typeof(IResponse)))
{
yield break;
}
else if (values.TryGetParameterKind(out var paramKind))
{
yield return(GetResponseParameter(resultType, paramKind, values));
}
else
{
var restParams = GetResponseParameters(resultType, values);
foreach (var param in restParams)
{
yield return(param);
}
}
}
public EndpointMetadata GetEndpointMetadata(Type contractType, MetadataValueProvider provider)
{
contractType.AssertNotNull(nameof(contractType));
provider.AssertNotNull(nameof(provider));
var values = provider.Nested(TypeDescriptor.GetAttributes(contractType));
var methods = contractType.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy);
var valueFormatters = contractType.GetCustomAttributes <Attribute>().OfType <IRestValueFormatter>().ToArray();
return(new EndpointMetadata
{
Methods = methods.Select(x => GetMethodMetadata(x, values, valueFormatters)).ToArray()
});
}
private IEnumerable <RequestParameterMetadata> GetRequestParameters(string bindingSourceName, string namePrefix, Type parameterType, string memberName, IEnumerable <IRestValueFormatter> valueFormatters, MetadataValueProvider provider)
{
parameterType.AssertNotNull(nameof(parameterType));
bindingSourceName.AssertNotNull(nameof(bindingSourceName));
var parameterKind = GetParameterKind(parameterType, provider);
if (parameterKind.HasValue)
{
var parameterName = $"{namePrefix}{provider.GetParameterName() ?? memberName}";
var paramMetadata = GetRequestParameter(bindingSourceName, parameterName, parameterType, parameterKind.Value, provider);
foreach (var formatter in valueFormatters)
{
paramMetadata.AddValueFormatter(formatter);
}
yield return(paramMetadata);
}
else if (TypeDescriptor.GetProperties(parameterType).OfType <PropertyDescriptor>().SelectMany(x => x.Attributes.OfType <IParameterDefinition>()).Any())
{
foreach (var property in TypeDescriptor.GetProperties(parameterType).OfType <PropertyDescriptor>())
{
var npv = provider.Nested(property.Attributes).Nested(TypeDescriptor.GetAttributes(parameterType)); //TODO
var parameterName = $"{namePrefix}{npv.GetParameterName() ?? property.Name}";
var propBindingPath = npv.GetBindingPath().Append(property.Name);
var paramDef = property.Attributes.OfType <IParameterDefinition>().FirstOrDefault();
if (paramDef != null)
{
var paramMetadata = GetRequestParameter(bindingSourceName, parameterName, parameterType, paramDef.ParameterKind, npv);
paramMetadata.BindingPath = propBindingPath;
foreach (var formatter in valueFormatters)
{
paramMetadata.AddValueFormatter(formatter);
}
yield return(paramMetadata);
}
else
{
var prefix = namePrefix + npv.GetParameterPrefix();
var pathProvider = new BindingPathProvider(propBindingPath);
foreach (var paramMetadata in GetRequestParameters(bindingSourceName, prefix, property.PropertyType, property.Name, valueFormatters, npv.With(pathProvider)))
{
yield return(paramMetadata);
}
}
}
}
else
{
var parameterName = $"{namePrefix}{provider.GetParameterName() ?? memberName}";
var bodyParam = GetRequestParameter(bindingSourceName, parameterName, parameterType, RequestParameterKind.Body, provider);
foreach (var formatter in valueFormatters)
{
bodyParam.AddValueFormatter(formatter);
}
yield return(bodyParam);
}
}
