public CoercionResult CoerceInput(Type targetType, string name, object value)
{
Check.IsNotNull(targetType, nameof(targetType));
if (!targetType.IsGenericType)
{
throw new InvalidOperationException(); // todo message
}
var elementType = targetType.GetGenericArguments()[0];
var elementTypeAdapter = GraphQLTypeHelper.CreateTypeAdapter(elementType);
var enumerableValue = value is IEnumerable enumerable
? enumerable.Cast <object>()
: new object[]
{
value
};
var coercedValues = enumerableValue
//.Select((x, i) => elementTypeAdapter.CoerceInput(elementType, $"{name}[{i}]", x))
.Select((x, i) => elementTypeAdapter.CoerceInput(elementType, $"{name}[{i}]", x is JToken token ? token.ToObject <object>() : x))
.ToList();
var errors = coercedValues
.SelectMany(x => x.Errors ?? Enumerable.Empty <CoercionError>())
.ToList();
var values = coercedValues
.Select(x => x.Value)
.ToList();
return(new CoercionResult(values, errors));
}
public GraphQLTypeDescription GetTypeDescription(Type targetType)
{
Check.IsNotNull(targetType, nameof(targetType));
if (!targetType.IsGenericType)
{
throw new InvalidOperationException(); // todo message
}
var elementType = targetType.GetGenericArguments()[0];
var elementTypeAdapter = GraphQLTypeHelper.CreateTypeAdapter(elementType);
return(GraphQLTypeDescription.NotNull(elementTypeAdapter.GetTypeDescription(elementType)));
}
public CoercionResult CoerceInput(Type targetType, string name, object value)
{
Check.IsNotNull(targetType, nameof(targetType));
if (!targetType.IsGenericType)
{
throw new InvalidOperationException(); // todo message
}
var wrappedType = targetType.GetGenericArguments()[0];
var json = JsonConvert.SerializeObject(value);
var converter = new InputConverter(name);
var result = JsonConvert.DeserializeObject(json, wrappedType, converter);
var errors = new List <CoercionError>(converter.Errors);
var properties = result.GetType()
.GetProperties()
.Where(x => x.SetMethod != null && x.GetMethod != null && typeof(IInput).IsAssignableFrom(x.PropertyType));
foreach (var property in properties)
{
if (property.GetValue(result) == null)
{
var inputType = Input.FindInputType(property.PropertyType);
if (inputType == null)
{
throw new InvalidOperationException(); // todo message
}
var graphQLType = inputType.GetGenericArguments()[0];
var typeAdapter = GraphQLTypeHelper.CreateTypeAdapter(graphQLType);
if (typeAdapter == null)
{
throw new InvalidOperationException(); // todo message
}
var coercionResult = typeAdapter.CoerceInput(graphQLType, $"{name}.{property.Name}", null);
var propertyResult = Input.Create(property.PropertyType, coercionResult.Value);
errors.AddRange(coercionResult.Errors ?? Enumerable.Empty <CoercionError>());
property.SetValue(result, propertyResult);
}
}
return(new CoercionResult(result, errors));
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var inputType = Input.FindInputType(objectType);
if (inputType == null)
{
throw new InvalidOperationException(); // todo message
}
var graphQLType = inputType.GetGenericArguments()[0];
var typeAdapter = GraphQLTypeHelper.CreateTypeAdapter(graphQLType);
if (typeAdapter == null)
{
throw new InvalidOperationException(); // todo message
}
object value;
if (reader.TokenType == JsonToken.StartArray)
{
var listValue = new List <object>();
serializer.Populate(JArray.Load(reader).CreateReader(), listValue);
value = listValue;
}
else
{
value = reader.Value;
}
//var value = reader.TokenType == JsonToken.StartArray
// ? JArray.Load(reader)
// : reader.Value;
var coercionResult = typeAdapter.CoerceInput(graphQLType, $"{name}.{reader.Path}", value);
var result = Input.Create(objectType, coercionResult.Value);
errors.AddRange(coercionResult.Errors ?? Enumerable.Empty <CoercionError>());
return(result);
}
public CoercionResult CoerceResult(Type targetType, string name, object value)
{
Check.IsNotNull(targetType, nameof(targetType));
if (!targetType.IsGenericType)
{
throw new InvalidOperationException(); // todo message
}
var elementType = targetType.GetGenericArguments()[0];
var elementTypeAdapter = GraphQLTypeHelper.CreateTypeAdapter(elementType);
var coercedValue = elementTypeAdapter
.CoerceResult(elementType, name, value);
return(new CoercionResult(
coercedValue.Value,
coercedValue.Value == null
? new[] { new CoercionError(name, GetTypeDescription(targetType), value) }
: null));
}
public GraphQLObject()
{
fields = new Dictionary <string, Field>();
var fieldMembers = GetType()
.GetTypeInfo()
.GetMethods()
.Select(x => new
{
FieldAttribute = x.GetCustomAttribute <FieldAttribute>(),
ObsoleteAttribute = x.GetCustomAttribute <ObsoleteAttribute>(),
Method = x,
})
.Where(x => x.FieldAttribute != null)
.ToList();
foreach (var member in fieldMembers)
{
var fieldName = member.FieldAttribute.Name ?? member.Method.Name;
var returnType = member.Method.ReturnType;
if (returnType.IsGenericType && returnType.GetGenericTypeDefinition() == typeof(Task <>))
{
returnType = returnType.GetGenericArguments()[0];
}
var genericParams = returnType.GetGenericArguments();
// todo check return type is IValueAccessor
if (genericParams.Length == 0)
{
throw new InvalidOperationException(); // todo message
}
var fieldType = genericParams[0];
var nullable = genericParams[0].IsGenericType && typeof(GraphQLNotNull <>).IsAssignableFrom(genericParams[0].GetGenericTypeDefinition());
var singular = true;
var itemNullable = false;
genericParams = genericParams[0].GetGenericArguments();
if (genericParams.Length != 0 && genericParams[0].IsGenericType)
{
singular = !typeof(GraphQLList <>).IsAssignableFrom(genericParams[0].GetGenericTypeDefinition());
genericParams = genericParams[0].GetGenericArguments();
if (genericParams.Length != 0 && genericParams[0].IsGenericType)
{
itemNullable = typeof(GraphQLNotNull <>).IsAssignableFrom(genericParams[0].GetGenericTypeDefinition());
}
}
fields.Add(fieldName, new Field(
fieldName,
member.FieldAttribute.Description,
member.ObsoleteAttribute == null ? null : member.ObsoleteAttribute.Message ?? "No longer supported",
nullable,
singular,
itemNullable,
new BoundGraphQLTypeAdapter(fieldType, GraphQLTypeHelper.CreateTypeAdapter(fieldType)),
member.Method.GetParameters()
.Where(x => x.ParameterType.IsGenericType && x.ParameterType.GetGenericTypeDefinition() == typeof(Input <>))
.ToDictionary(
x => x.Name,
x => new BoundGraphQLTypeAdapter(
x.ParameterType.GetGenericArguments()[0],
GraphQLTypeHelper.CreateTypeAdapter(x.ParameterType.GetGenericArguments()[0]))), // todo gracefully fail. we're grabbing the GQL type from the generic parameter of Input<>
new ValueAccessorFactory(this, member.Method)));
}
}
