//will generate a type representing the passed-in type, and return the string
//name of the type
string Generate(Type type)
{
//root type is submitted
var rootType = new TypeMetadata
{
Name = type.Name,
Properties = new List <PropertyMetadata>()
};
metadata.Types.Add(rootType);
var props = type.GetRuntimeProperties();
foreach (var prop in props)
{
//skip these
if (prop.PropertyType != typeof(LinkCollection) && !ignoreProperties.Contains(prop.Name))
{
var propMetadata = new PropertyMetadata
{
Name = prop.Name,
Type = GetTypeDescriptor(prop.PropertyType),
DisplayInfo = new DisplayInfo
{
Required = prop.IsDefined(typeof(RequiredAttribute)),
Description = prop.GetCustomAttribute <DescriptionAttribute>()?.Description,
ShowCopyToClipboard = prop.IsDefined(typeof(AllowCopyToClipboardAttribute))
}
};
//accepts [DisplayName()] or [Display(Name=)] -> defaults to property name
if (prop.IsDefined(typeof(DisplayNameAttribute)))
{
propMetadata.DisplayInfo.Label = prop.GetCustomAttribute <DisplayNameAttribute>()?.DisplayName ?? string.Empty;
}
else if (prop.IsDefined(typeof(DisplayAttribute)))
{
propMetadata.DisplayInfo.Label = prop.GetCustomAttribute <DisplayAttribute>()?.Name ?? string.Empty;
}
else
{
propMetadata.DisplayInfo.Label = prop.Name;
}
//accepts [ReadOnly()] or [Writeable] -> defaults to true (Read Only)
if (prop.IsDefined(typeof(ReadOnlyAttribute)))
{
propMetadata.DisplayInfo.ReadOnly = prop.GetCustomAttribute <ReadOnlyAttribute>()?.IsReadOnly == true;
}
else if (prop.IsDefined(typeof(WriteableAttribute)))
{
propMetadata.DisplayInfo.ReadOnly = false;
}
else
{
propMetadata.DisplayInfo.ReadOnly = true;
}
//selectable metadata is not currently supported in the UI
if (prop.IsDefined(typeof(SelectableAttribute)))
{
if (prop.IsDefined(typeof(HasOptionsAttribute)))
{
var optionsAttr = prop.GetCustomAttribute <HasOptionsAttribute>();
propMetadata.DisplayInfo.Options = new OptionsMetadata
{
SelectMode = optionsAttr?.SelectMode.ToString()
};
if (prop.PropertyType.GetTypeInfo().IsEnum)
{
var enumType = prop.PropertyType;
propMetadata.DisplayInfo.Options.Values = ProjectEnum(enumType);
}
}
else if (prop.IsDefined(typeof(ListApiAttribute)))
{
var listApiAttr = prop.GetCustomAttribute <ListApiAttribute>();
propMetadata.DisplayInfo.ListApi = new ListApiMetadata(listApiAttr !.SelectMode.ToString(), listApiAttr !.ApiEndpoint);
}
}
if (prop.IsDefined(typeof(PropertyApplicabilityAttribute)))
{
var applicableAttr = prop.GetCustomAttribute <PropertyApplicabilityAttribute>();
propMetadata.DisplayInfo.PropertyApplicability = new PropertyApplicability(applicableAttr !.Mode, applicableAttr.DependsOnPropertyName)
{
DependsOnPropertyValue = applicableAttr.DependsOnPropertyValue
};
}
if (prop.IsDefined(typeof(AllowConnectivityCheckAttribute)))
{
var allowConnectivityCheckAttr = prop.GetCustomAttribute <AllowConnectivityCheckAttribute>();
propMetadata.DisplayInfo.ConnectivityCheck = new ConnectivityCheck
{
Title = allowConnectivityCheckAttr !.ConnectivityCheckTitle,
Url = allowConnectivityCheckAttr.ApiEndpoint,
DependsOnPropertyNames = allowConnectivityCheckAttr.DependsOnPropertyNames
};
}
rootType.Properties.Add(propMetadata);
}
}
return(rootType.Name);
}
Dictionary <string, string> ProjectEnum(Type enumType)
{
if (!enumType.GetTypeInfo().IsEnum)
{
throw new Exception("Parameter must be an enum");
}
var values = new Dictionary <string, string>();
foreach (var item in Enum.GetValues(enumType))
{
values.Add(item.ToString() !, EnumExtensions.GetDescription(enumType, item));
}
return(values);
}
string GetTypeDescriptor(Type type)
{
//Array
if (type.IsArray)
{
return(GetTypeDescriptor(type.GetElementType() !) + "[]");
}
if (type.GetTypeInfo().IsGenericType)
{
var genericTypeDefinition = type.GetGenericTypeDefinition();
//List<>
if (genericTypeDefinition.GetTypeInfo().IsAssignableFrom(typeof(List <>).GetTypeInfo()))
{
var genericType = type.GetTypeInfo().GenericTypeArguments[0];
return(GetTypeDescriptor(genericType) + "[]");
}
//Dictionary<>
if (genericTypeDefinition.GetTypeInfo().IsAssignableFrom(typeof(Dictionary <,>).GetTypeInfo()))
{
var genericTypes = type.GetTypeInfo().GenericTypeArguments;
var keyType = GetTypeDescriptor(genericTypes[0]);
var valueType = GetTypeDescriptor(genericTypes[1]);
return($"Dictionary<{keyType}, {valueType}>");
}
//other generics not supported yet
}
//Nullable
var underlyingType = Nullable.GetUnderlyingType(type);
if (underlyingType != null)
{
return(GetTypeDescriptor(underlyingType) + "?");
}
//Enum
if (type.GetTypeInfo().IsEnum)
{
//for enums, we will map the values into the property itself and assume a
// string on the wire
return("string");
}
//approved primitive / value-type mappings
if (mappings.TryGetValue(type, out var descriptor))
{
return(descriptor);
}
//if we drop down here, first check if the type is already mapped:
//if not, map the type into the types collection and just
//return the type name to link them together
if (metadata.Types.All(t => t.Name != type.Name))
{
return(Generate(type));
}
//otherwise we just return the already mapped name :)
return(type.Name);
}
}
}
