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SchemaHelper.cs
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SchemaHelper.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using HotChocolate;
using HotChocolate.Language;
using HotChocolate.Types;
using HotChocolate.Utilities;
using StrawberryShake.CodeGeneration.Analyzers;
using StrawberryShake.CodeGeneration.Analyzers.Types;
using static StrawberryShake.CodeGeneration.Utilities.DocumentHelper;
namespace StrawberryShake.CodeGeneration.Utilities;
public static class SchemaHelper
{
private static string _typeInfosKey = "StrawberryShake.CodeGeneration.Utilities.TypeInfos";
public static ISchema Load(
IReadOnlyCollection<GraphQLFile> schemaFiles,
bool strictValidation = true,
bool noStore = false)
{
if (schemaFiles is null)
{
throw new ArgumentNullException(nameof(schemaFiles));
}
var typeInfos = new TypeInfos();
var lookup = new Dictionary<ISyntaxNode, string>();
IndexSyntaxNodes(schemaFiles, lookup);
var builder = SchemaBuilder.New();
builder.ModifyOptions(o => o.StrictValidation = strictValidation);
var leafTypes = new Dictionary<string, LeafTypeInfo>(StringComparer.Ordinal);
var globalEntityPatterns = new List<SelectionSetNode>();
var typeEntityPatterns = new Dictionary<string, SelectionSetNode>(StringComparer.Ordinal);
foreach (var document in schemaFiles.Select(f => f.Document))
{
if (document.Definitions.Any(t => t is ITypeSystemExtensionNode))
{
CollectScalarInfos(
document.Definitions.OfType<ScalarTypeExtensionNode>(),
leafTypes,
typeInfos);
CollectEnumInfos(
document.Definitions.OfType<EnumTypeExtensionNode>(),
leafTypes,
typeInfos);
if (!noStore)
{
CollectGlobalEntityPatterns(
document.Definitions.OfType<SchemaExtensionNode>(),
globalEntityPatterns);
CollectTypeEntityPatterns(
document.Definitions.OfType<ObjectTypeExtensionNode>(),
typeEntityPatterns);
}
}
else
{
foreach (var scalar in document.Definitions.OfType<ScalarTypeDefinitionNode>())
{
if (!BuiltInScalarNames.IsBuiltInScalar(scalar.Name.Value))
{
builder.AddType(new AnyType(
scalar.Name.Value,
scalar.Description?.Value));
}
else if (scalar.Name.Value == ScalarNames.Any)
{
builder.AddType(new AnyType());
}
}
builder.AddDocument(document);
}
}
AddDefaultScalarInfos(builder, leafTypes);
return builder
.SetSchema(d => d.Extend().OnBeforeCreate(
c => c.ContextData.Add(_typeInfosKey, typeInfos)))
.TryAddTypeInterceptor(
new LeafTypeInterceptor(leafTypes))
.TryAddTypeInterceptor(
new EntityTypeInterceptor(globalEntityPatterns, typeEntityPatterns))
.Use(_ => _ => throw new NotSupportedException())
.Create();
}
public static RuntimeTypeInfo GetOrCreateTypeInfo(
this ISchema schema,
string typeName,
bool valueType = false) =>
((TypeInfos)schema.ContextData[_typeInfosKey]!).GetOrAdd(typeName, valueType);
private static void CollectScalarInfos(
IEnumerable<ScalarTypeExtensionNode> scalarTypeExtensions,
Dictionary<string, LeafTypeInfo> leafTypes,
TypeInfos typeInfos)
{
foreach (var scalarTypeExtension in scalarTypeExtensions)
{
if (!leafTypes.TryGetValue(
scalarTypeExtension.Name.Value,
out var scalarInfo))
{
var runtimeType = GetRuntimeType(scalarTypeExtension);
var serializationType = GetSerializationType(scalarTypeExtension);
TryRegister(typeInfos, runtimeType);
TryRegister(typeInfos, serializationType);
scalarInfo = new LeafTypeInfo(
scalarTypeExtension.Name.Value,
runtimeType?.Name,
serializationType?.Name);
leafTypes.Add(scalarInfo.TypeName, scalarInfo);
}
}
}
private static void CollectEnumInfos(
IEnumerable<EnumTypeExtensionNode> enumTypeExtensions,
Dictionary<string, LeafTypeInfo> leafTypes,
TypeInfos typeInfos)
{
foreach (var scalarTypeExtension in enumTypeExtensions)
{
if (!leafTypes.TryGetValue(
scalarTypeExtension.Name.Value,
out var scalarInfo))
{
var runtimeType = GetRuntimeType(scalarTypeExtension);
var serializationType = GetSerializationType(scalarTypeExtension);
TryRegister(typeInfos, runtimeType);
TryRegister(typeInfos, serializationType);
scalarInfo = new LeafTypeInfo(
scalarTypeExtension.Name.Value,
runtimeType?.Name,
serializationType?.Name);
leafTypes.Add(scalarInfo.TypeName, scalarInfo);
}
}
}
private static RuntimeTypeDirective? GetRuntimeType(
HotChocolate.Language.IHasDirectives hasDirectives) =>
GetDirectiveValue(hasDirectives, "runtimeType");
private static RuntimeTypeDirective? GetSerializationType(
HotChocolate.Language.IHasDirectives hasDirectives) =>
GetDirectiveValue(hasDirectives, "serializationType");
private static RuntimeTypeDirective? GetDirectiveValue(
HotChocolate.Language.IHasDirectives hasDirectives,
string directiveName)
{
var directive = hasDirectives.Directives.FirstOrDefault(
t => directiveName.EqualsOrdinal(t.Name.Value));
if (directive is { Arguments.Count: > 0 })
{
var name = directive.Arguments.FirstOrDefault(
t => t.Name.Value.Equals("name"));
var valueType = directive.Arguments.FirstOrDefault(
t => t.Name.Value.Equals("valueType"));
if (name is { Value: StringValueNode stringValue })
{
var valueTypeValue = valueType?.Value as BooleanValueNode;
return new(stringValue.Value, valueTypeValue?.Value);
}
}
return null;
}
private static void CollectGlobalEntityPatterns(
IEnumerable<SchemaExtensionNode> schemaExtensions,
List<SelectionSetNode> entityPatterns)
{
foreach (var schemaExtension in schemaExtensions)
{
foreach (var directive in schemaExtension.Directives)
{
if (TryGetKeys(directive, out var selectionSet))
{
entityPatterns.Add(selectionSet);
}
}
}
}
private static void CollectTypeEntityPatterns(
IEnumerable<ObjectTypeExtensionNode> objectTypeExtensions,
Dictionary<string, SelectionSetNode> entityPatterns)
{
foreach (var objectTypeExtension in objectTypeExtensions)
{
if (TryGetKeys(objectTypeExtension, out var selectionSet) &&
!entityPatterns.ContainsKey(objectTypeExtension.Name.Value))
{
entityPatterns.Add(
objectTypeExtension.Name.Value,
selectionSet);
}
}
}
private static void AddDefaultScalarInfos(
ISchemaBuilder schemaBuilder,
Dictionary<string, LeafTypeInfo> leafTypes)
{
TryAddLeafType(leafTypes, ScalarNames.String, TypeNames.String);
TryAddLeafType(leafTypes, ScalarNames.ID, TypeNames.String);
TryAddLeafType(leafTypes, ScalarNames.Boolean, TypeNames.Boolean, TypeNames.Boolean);
TryAddLeafType(leafTypes, ScalarNames.Byte, TypeNames.Byte, TypeNames.Byte);
TryAddLeafType(leafTypes, ScalarNames.Short, TypeNames.Int16, TypeNames.Int16);
TryAddLeafType(leafTypes, ScalarNames.Int, TypeNames.Int32, TypeNames.Int32);
TryAddLeafType(leafTypes, ScalarNames.Long, TypeNames.Int64, TypeNames.Int64);
TryAddLeafType(leafTypes, ScalarNames.Float, TypeNames.Double, TypeNames.Double);
TryAddLeafType(leafTypes, ScalarNames.Decimal, TypeNames.Decimal, TypeNames.Decimal);
TryAddLeafType(leafTypes, ScalarNames.URL, TypeNames.Uri);
TryAddLeafType(leafTypes, "URI", TypeNames.Uri);
TryAddLeafType(leafTypes, "Url", TypeNames.Uri);
TryAddLeafType(leafTypes, "Uri", TypeNames.Uri);
TryAddLeafType(leafTypes, ScalarNames.UUID, TypeNames.Guid, TypeNames.String);
TryAddLeafType(leafTypes, "Uuid", TypeNames.Guid, TypeNames.String);
TryAddLeafType(leafTypes, "Guid", TypeNames.Guid, TypeNames.String);
TryAddLeafType(leafTypes, ScalarNames.DateTime, TypeNames.DateTimeOffset);
TryAddLeafType(leafTypes, ScalarNames.Date, TypeNames.DateTime);
TryAddLeafType(leafTypes, ScalarNames.TimeSpan, TypeNames.TimeSpan);
TryAddLeafType(
leafTypes,
typeName: ScalarNames.ByteArray,
runtimeType: TypeNames.ByteArray,
serializationType: TypeNames.ByteArray);
TryAddLeafType(
leafTypes,
typeName: ScalarNames.Any,
runtimeType: TypeNames.JsonDocument,
serializationType: TypeNames.JsonElement);
TryAddLeafType(
leafTypes,
typeName: "Upload",
runtimeType: TypeNames.Upload,
serializationType: TypeNames.String);
// register aliases
schemaBuilder.AddType(new UrlType());
schemaBuilder.AddType(new UrlType("URI"));
schemaBuilder.AddType(new UrlType("Url"));
schemaBuilder.AddType(new UrlType("Uri"));
schemaBuilder.AddType(new UuidType());
schemaBuilder.AddType(new UuidType("Uuid"));
schemaBuilder.AddType(new UuidType("Guid"));
}
private static bool TryGetKeys(
HotChocolate.Language.IHasDirectives directives,
[NotNullWhen(true)] out SelectionSetNode? selectionSet)
{
var directive = directives.Directives.FirstOrDefault(IsKeyDirective);
if (directive is not null)
{
return TryGetKeys(directive, out selectionSet);
}
selectionSet = null;
return false;
}
private static bool TryGetKeys(
DirectiveNode directive,
[NotNullWhen(true)] out SelectionSetNode? selectionSet)
{
if (directive is { Arguments: { Count: 1 } } &&
directive.Arguments[0] is { Name: { Value: "fields" }, Value: StringValueNode sv })
{
selectionSet = Utf8GraphQLParser.Syntax.ParseSelectionSet($"{{{sv.Value}}}");
return true;
}
selectionSet = null;
return false;
}
private static bool IsKeyDirective(DirectiveNode directive) =>
directive.Name.Value.Equals("key", StringComparison.Ordinal);
private static void TryAddLeafType(
Dictionary<string, LeafTypeInfo> leafTypes,
string typeName,
string runtimeType,
string serializationType = TypeNames.String)
{
if (!leafTypes.TryGetValue(typeName, out var leafType))
{
leafType = new LeafTypeInfo(typeName, runtimeType, serializationType);
leafTypes.Add(typeName, leafType);
}
}
private static void TryRegister(TypeInfos typeInfos, RuntimeTypeDirective? runtimeType)
{
if (runtimeType is not null)
{
typeInfos.GetOrAdd(runtimeType);
}
}
}