func main() {
	// Schema
	fields := graphql.Fields{
		"hello": &graphql.Field{
			Type: graphql.String,
			Resolve: func(p graphql.ResolveParams) interface{} {
				return "world"
			},
		},
	}
	rootQuery := graphql.ObjectConfig{Name: "RootQuery", Fields: fields}
	schemaConfig := graphql.SchemaConfig{Query: graphql.NewObject(rootQuery)}
	schema, err := graphql.NewSchema(schemaConfig)
	if err != nil {
		log.Fatalf("failed to create new schema, error: %v", err)
	}

	// Query
	query := `
		{
			hello
		}
	`
	params := graphql.Params{Schema: schema, RequestString: query}
	r := graphql.Do(params)
	if len(r.Errors) > 0 {
		log.Fatalf("failed to execute graphql operation, errors: %+v", r.Errors)
	}
	rJSON, _ := json.Marshal(r)
	fmt.Printf("%s \n", rJSON) // {“data”:{“hello”:”world”}}
}

func TestTypeSystem_DefinitionExample_DefinesASubscriptionScheme(t *testing.T) {
	blogSchema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query:        blogQuery,
		Subscription: blogSubscription,
	})
	if err != nil {
		t.Fatalf("unexpected error, got: %v", err)
	}

	if blogSchema.SubscriptionType() != blogSubscription {
		t.Fatalf("expected blogSchema.SubscriptionType() == blogSubscription")
	}

	subMutation, _ := blogSubscription.Fields()["articleSubscribe"]
	if subMutation == nil {
		t.Fatalf("subMutation is nil")
	}
	subMutationType := subMutation.Type
	if subMutationType != blogArticle {
		t.Fatalf("subMutationType expected to equal blogArticle, got: %v", subMutationType)
	}
	if subMutationType.Name() != "Article" {
		t.Fatalf("subMutationType.Name expected to equal `Article`, got: %v", subMutationType.Name())
	}
	if subMutation.Name != "articleSubscribe" {
		t.Fatalf("subMutation.Name expected to equal `articleSubscribe`, got: %v", subMutation.Name)
	}
}

func TestTypeSystem_SchemaMustContainUniquelyNamedTypes_RejectsASchemaWhichRedefinesABuiltInType(t *testing.T) {

	fakeString := graphql.NewScalar(graphql.ScalarConfig{
		Name: "String",
		Serialize: func(value interface{}) interface{} {
			return nil
		},
	})
	queryType := graphql.NewObject(graphql.ObjectConfig{
		Name: "Query",
		Fields: graphql.FieldConfigMap{
			"normal": &graphql.FieldConfig{
				Type: graphql.String,
			},
			"fake": &graphql.FieldConfig{
				Type: fakeString,
			},
		},
	})
	_, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: queryType,
	})
	expectedError := `Schema must contain unique named types but contains multiple types named "String".`
	if err == nil || err.Error() != expectedError {
		t.Fatalf("Expected error: %v, got %v", expectedError, err)
	}
}

func TestTypeSystem_SchemaMustHaveObjectRootTypes_RejectsASchemaWithoutAQueryType(t *testing.T) {
	_, err := graphql.NewSchema(graphql.SchemaConfig{})
	expectedError := "Schema query must be Object Type but got: nil."
	if err == nil || err.Error() != expectedError {
		t.Fatalf("Expected error: %v, got %v", expectedError, err)
	}
}

func main() {
	queryType := graphql.ObjectConfig{
		Name:        "Ping",
		Description: "Ping to get pong...",

		Fields: graphql.Fields{
			"ping": &graphql.Field{
				Type: graphql.String,
				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
					return "pong", nil
				},
			},
		},
	}

	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(queryType),
	})

	if err != nil {
		panic(err)
	}

	http.HandleFunc("/graphql", customHandler(&schema))
	http.ListenAndServe(":8888", nil)
}

func init() {
	globalIDTestUserType = graphql.NewObject(graphql.ObjectConfig{
		Name: "User",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("User", nil),
			"name": &graphql.Field{
				Type: graphql.String,
			},
		},
		Interfaces: []*graphql.Interface{globalIDTestDef.NodeInterface},
	})
	photoIDFetcher := func(obj interface{}, info graphql.ResolveInfo) string {
		switch obj := obj.(type) {
		case *photo2:
			return fmt.Sprintf("%v", obj.PhotoId)
		}
		return ""
	}
	globalIDTestPhotoType = graphql.NewObject(graphql.ObjectConfig{
		Name: "Photo",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("Photo", photoIDFetcher),
			"width": &graphql.Field{
				Type: graphql.Int,
			},
		},
		Interfaces: []*graphql.Interface{globalIDTestDef.NodeInterface},
	})

	globalIDTestSchema, _ = graphql.NewSchema(graphql.SchemaConfig{
		Query: globalIDTestQueryType,
	})
}

func TestTypeSystem_DefinitionExample_DefinesAMutationScheme(t *testing.T) {
	blogSchema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query:    blogQuery,
		Mutation: blogMutation,
	})
	if err != nil {
		t.Fatalf("unexpected error, got: %v", err)
	}

	if blogSchema.MutationType() != blogMutation {
		t.Fatalf("expected blogSchema.GetMutationType() == blogMutation")
	}

	writeMutation, _ := blogMutation.Fields()["writeArticle"]
	if writeMutation == nil {
		t.Fatalf("writeMutation is nil")
	}
	writeMutationType := writeMutation.Type
	if writeMutationType != blogArticle {
		t.Fatalf("writeMutationType expected to equal blogArticle, got: %v", writeMutationType)
	}
	if writeMutationType.Name() != "Article" {
		t.Fatalf("writeMutationType.Name expected to equal `Article`, got: %v", writeMutationType.Name())
	}
	if writeMutation.Name != "writeArticle" {
		t.Fatalf("writeMutation.Name expected to equal `writeArticle`, got: %v", writeMutation.Name)
	}
}

func TestDirectives_DirectivesMustBeNamed(t *testing.T) {
	invalidDirective := graphql.NewDirective(graphql.DirectiveConfig{
		Locations: []string{
			graphql.DirectiveLocationField,
		},
	})
	_, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(graphql.ObjectConfig{
			Name: "TestType",
			Fields: graphql.Fields{
				"a": &graphql.Field{
					Type: graphql.String,
				},
			},
		}),
		Directives: []*graphql.Directive{invalidDirective},
	})
	expectedErr := gqlerrors.FormattedError{
		Message:   "Directive must be named.",
		Locations: []location.SourceLocation{},
	}
	if !reflect.DeepEqual(expectedErr, err) {
		t.Fatalf("Expected error to be equal, got: %v", testutil.Diff(expectedErr, err))
	}
}

func TestDirectives_DirectiveNameMustBeValid(t *testing.T) {
	invalidDirective := graphql.NewDirective(graphql.DirectiveConfig{
		Name: "123invalid name",
		Locations: []string{
			graphql.DirectiveLocationField,
		},
	})
	_, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(graphql.ObjectConfig{
			Name: "TestType",
			Fields: graphql.Fields{
				"a": &graphql.Field{
					Type: graphql.String,
				},
			},
		}),
		Directives: []*graphql.Directive{invalidDirective},
	})
	expectedErr := gqlerrors.FormattedError{
		Message:   `Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but "123invalid name" does not.`,
		Locations: []location.SourceLocation{},
	}
	if !reflect.DeepEqual(expectedErr, err) {
		t.Fatalf("Expected error to be equal, got: %v", testutil.Diff(expectedErr, err))
	}
}

func init() {
	nodeTestUserType = graphql.NewObject(graphql.ObjectConfig{
		Name: "User",
		Fields: graphql.FieldConfigMap{
			"id": &graphql.FieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
			"name": &graphql.FieldConfig{
				Type: graphql.String,
			},
		},
		Interfaces: []*graphql.Interface{nodeTestDef.NodeInterface},
	})
	nodeTestPhotoType = graphql.NewObject(graphql.ObjectConfig{
		Name: "Photo",
		Fields: graphql.FieldConfigMap{
			"id": &graphql.FieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
			"width": &graphql.FieldConfig{
				Type: graphql.Int,
			},
		},
		Interfaces: []*graphql.Interface{nodeTestDef.NodeInterface},
	})

	nodeTestSchema, _ = graphql.NewSchema(graphql.SchemaConfig{
		Query: nodeTestQueryType,
	})
}

func TestQuery_ExecutionDoesNotAddErrorsFromFieldResolveFn(t *testing.T) {
	qError := errors.New("queryError")
	q := graphql.NewObject(graphql.ObjectConfig{
		Name: "Query",
		Fields: graphql.Fields{
			"a": &graphql.Field{
				Type: graphql.String,
				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
					return nil, qError
				},
			},
			"b": &graphql.Field{
				Type: graphql.String,
				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
					return "ok", nil
				},
			},
		},
	})
	blogSchema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: q,
	})
	if err != nil {
		t.Fatalf("unexpected error, got: %v", err)
	}
	query := "{ b }"
	result := graphql.Do(graphql.Params{
		Schema:        blogSchema,
		RequestString: query,
	})
	if len(result.Errors) != 0 {
		t.Fatalf("wrong result, unexpected errors: %+v", result.Errors)
	}
}

func schemaWithInputFieldOfType(ttype graphql.Type) (graphql.Schema, error) {

	badInputObject := graphql.NewInputObject(graphql.InputObjectConfig{
		Name: "BadInputObject",
		Fields: graphql.InputObjectConfigFieldMap{
			"badField": &graphql.InputObjectFieldConfig{
				Type: ttype,
			},
		},
	})
	return graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(graphql.ObjectConfig{
			Name: "Query",
			Fields: graphql.FieldConfigMap{
				"f": &graphql.FieldConfig{
					Type: graphql.String,
					Args: graphql.FieldConfigArgument{
						"badArg": &graphql.ArgumentConfig{
							Type: badInputObject,
						},
					},
				},
			},
		}),
	})
}

func main() {
	log = log15.New()
	log.Info("starting server...")

	envconfig.Process("", &settings)

	schema, err := graphql.NewSchema(makeSchema())
	if err != nil {
		log.Info("error creating schema", "err", err)
		return
	}

	h := handler.New(&handler.Config{
		Schema: &schema,
		Pretty: false,
	})

	mux := http.NewServeMux()
	mux.Handle("/graphql", h)
	mux.Handle("/", http.FileServer(http.Dir("dist")))

	log.Info("Listening at " + settings.Port + "...")
	graceful.Run(":"+settings.Port, 1*time.Second, mux)
	log.Info("Exiting...")
}

func TestIntrospection_IdentifiesDeprecatedFields(t *testing.T) {

	testType := graphql.NewObject(graphql.ObjectConfig{
		Name: "TestType",
		Fields: graphql.Fields{
			"nonDeprecated": &graphql.Field{
				Type: graphql.String,
			},
			"deprecated": &graphql.Field{
				Type:              graphql.String,
				DeprecationReason: "Removed in 1.0",
			},
		},
	})
	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: testType,
	})
	if err != nil {
		t.Fatalf("Error creating Schema: %v", err.Error())
	}
	query := `
      {
        __type(name: "TestType") {
          name
          fields(includeDeprecated: true) {
            name
            isDeprecated,
            deprecationReason
          }
        }
      }
    `
	expected := &graphql.Result{
		Data: map[string]interface{}{
			"__type": map[string]interface{}{
				"name": "TestType",
				"fields": []interface{}{
					map[string]interface{}{
						"name":              "nonDeprecated",
						"isDeprecated":      false,
						"deprecationReason": nil,
					},
					map[string]interface{}{
						"name":              "deprecated",
						"isDeprecated":      true,
						"deprecationReason": "Removed in 1.0",
					},
				},
			},
		},
	}
	result := g(t, graphql.Params{
		Schema:        schema,
		RequestString: query,
	})
	if !testutil.ContainSubset(result.Data.(map[string]interface{}), expected.Data.(map[string]interface{})) {
		t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result))
	}
}

func TestTypeSystem_SchemaMustHaveObjectRootTypes_AcceptsASchemaWhoseQueryTypeIsAnObjectType(t *testing.T) {
	_, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: someObjectType,
	})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
}

func TestCorrectlyThreadsArguments(t *testing.T) {

	query := `
      query Example {
        b(numArg: 123, stringArg: "foo")
      }
    `

	var resolvedArgs map[string]interface{}

	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(graphql.ObjectConfig{
			Name: "Type",
			Fields: graphql.Fields{
				"b": &graphql.Field{
					Args: graphql.FieldConfigArgument{
						"numArg": &graphql.ArgumentConfig{
							Type: graphql.Int,
						},
						"stringArg": &graphql.ArgumentConfig{
							Type: graphql.String,
						},
					},
					Type: graphql.String,
					Resolve: func(p graphql.ResolveParams) (interface{}, error) {
						resolvedArgs = p.Args
						return resolvedArgs, nil
					},
				},
			},
		}),
	})
	if err != nil {
		t.Fatalf("Error in schema %v", err.Error())
	}

	// parse query
	ast := testutil.TestParse(t, query)

	// execute
	ep := graphql.ExecuteParams{
		Schema: schema,
		AST:    ast,
	}
	result := testutil.TestExecute(t, ep)
	if len(result.Errors) > 0 {
		t.Fatalf("wrong result, unexpected errors: %v", result.Errors)
	}

	expectedNum := 123
	expectedString := "foo"
	if resolvedArgs["numArg"] != expectedNum {
		t.Fatalf("Expected args.numArg to equal `%v`, got `%v`", expectedNum, resolvedArgs["numArg"])
	}
	if resolvedArgs["stringArg"] != expectedString {
		t.Fatalf("Expected args.stringArg to equal `%v`, got `%v`", expectedNum, resolvedArgs["stringArg"])
	}
}

func init() {
	s, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: queryType,
	})
	if err != nil {
		log.Fatalf("failed to create schema, error: %v", err)
	}
	Schema = s
}

func TestAvoidsRecursion(t *testing.T) {

	doc := `
      query Q {
        a
        ...Frag
        ...Frag
      }

      fragment Frag on Type {
        a,
        ...Frag
      }
    `
	data := map[string]interface{}{
		"a": "b",
	}

	expected := &graphql.Result{
		Data: map[string]interface{}{
			"a": "b",
		},
	}

	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query: graphql.NewObject(graphql.ObjectConfig{
			Name: "Type",
			Fields: graphql.Fields{
				"a": &graphql.Field{
					Type: graphql.String,
				},
			},
		}),
	})
	if err != nil {
		t.Fatalf("Error in schema %v", err.Error())
	}

	// parse query
	ast := testutil.TestParse(t, doc)

	// execute
	ep := graphql.ExecuteParams{
		Schema:        schema,
		AST:           ast,
		Root:          data,
		OperationName: "Q",
	}
	result := testutil.TestExecute(t, ep)
	if len(result.Errors) > 0 {
		t.Fatalf("wrong result, unexpected errors: %v", result.Errors)
	}
	if !reflect.DeepEqual(expected, result) {
		t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, result))
	}

}

func TestMutation_ExecutionAddsErrorsFromFieldResolveFn(t *testing.T) {
	mError := errors.New("mutationError")
	q := graphql.NewObject(graphql.ObjectConfig{
		Name: "Query",
		Fields: graphql.Fields{
			"a": &graphql.Field{
				Type: graphql.String,
			},
		},
	})
	m := graphql.NewObject(graphql.ObjectConfig{
		Name: "Mutation",
		Fields: graphql.Fields{
			"foo": &graphql.Field{
				Type: graphql.String,
				Args: graphql.FieldConfigArgument{
					"f": &graphql.ArgumentConfig{
						Type: graphql.String,
					},
				},
				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
					return nil, mError
				},
			},
			"bar": &graphql.Field{
				Type: graphql.String,
				Args: graphql.FieldConfigArgument{
					"b": &graphql.ArgumentConfig{
						Type: graphql.String,
					},
				},
				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
					return "ok", nil
				},
			},
		},
	})
	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query:    q,
		Mutation: m,
	})
	if err != nil {
		t.Fatalf("unexpected error, got: %v", err)
	}
	query := "mutation _ { newFoo: foo(f:\"title\") }"
	result := graphql.Do(graphql.Params{
		Schema:        schema,
		RequestString: query,
	})
	if len(result.Errors) == 0 {
		t.Fatal("wrong result, expected errors, got no errors")
	}
	if result.Errors[0].Error() != mError.Error() {
		t.Fatalf("wrong result, unexpected error, got: %v, expected: %v", result.Errors[0], mError)
	}
}

func TestTypeSystem_DefinitionExample_IncludesNestedInputObjectsInTheMap(t *testing.T) {
	nestedInputObject := graphql.NewInputObject(graphql.InputObjectConfig{
		Name: "NestedInputObject",
		Fields: graphql.InputObjectConfigFieldMap{
			"value": &graphql.InputObjectFieldConfig{
				Type: graphql.String,
			},
		},
	})
	someInputObject := graphql.NewInputObject(graphql.InputObjectConfig{
		Name: "SomeInputObject",
		Fields: graphql.InputObjectConfigFieldMap{
			"nested": &graphql.InputObjectFieldConfig{
				Type: nestedInputObject,
			},
		},
	})
	someMutation := graphql.NewObject(graphql.ObjectConfig{
		Name: "SomeMutation",
		Fields: graphql.Fields{
			"mutateSomething": &graphql.Field{
				Type: blogArticle,
				Args: graphql.FieldConfigArgument{
					"input": &graphql.ArgumentConfig{
						Type: someInputObject,
					},
				},
			},
		},
	})
	someSubscription := graphql.NewObject(graphql.ObjectConfig{
		Name: "SomeSubscription",
		Fields: graphql.Fields{
			"subscribeToSomething": &graphql.Field{
				Type: blogArticle,
				Args: graphql.FieldConfigArgument{
					"input": &graphql.ArgumentConfig{
						Type: someInputObject,
					},
				},
			},
		},
	})
	schema, err := graphql.NewSchema(graphql.SchemaConfig{
		Query:        blogQuery,
		Mutation:     someMutation,
		Subscription: someSubscription,
	})
	if err != nil {
		t.Fatalf("unexpected error, got: %v", err)
	}
	if schema.Type("NestedInputObject") != nestedInputObject {
		t.Fatalf(`schema.GetType("NestedInputObject") expected to equal nestedInputObject, got: %v`, schema.Type("NestedInputObject"))
	}
}