/*
Copyright 2019 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package rest

import (
	"context"

	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/util/validation/field"
)

// RESTCreateUpdateStrategy is a union of RESTUpdateStrategy and RESTCreateStrategy,
// and it defines the minimum validation, accepted input, and name generation
// behavior to create and update an object that follows Kubernetes API conventions.
type RESTCreateUpdateStrategy interface {
	RESTCreateStrategy
	// AllowCreateOnUpdate returns true if the object can be created by a PUT.
	AllowCreateOnUpdate() bool
	// PrepareForUpdate is invoked on update before validation to normalize
	// the object.  For example: remove fields that are not to be persisted,
	// sort order-insensitive list fields, etc.  This should not remove fields
	// whose presence would be considered a validation error.
	PrepareForUpdate(ctx context.Context, obj, old runtime.Object)
	// ValidateUpdate is invoked after default fields in the object have been
	// filled in before the object is persisted.  This method should not mutate
	// the object.
	ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList
	// AllowUnconditionalUpdate returns true if the object can be updated
	// unconditionally (irrespective of the latest resource version), when
	// there is no resource version specified in the object.
	AllowUnconditionalUpdate() bool
}

// Ensure that RESTCreateUpdateStrategy extends RESTCreateStrategy
var _ RESTCreateStrategy = (RESTCreateUpdateStrategy)(nil)

// Ensure that RESTCreateUpdateStrategy extends RESTUpdateStrategy
var _ RESTUpdateStrategy = (RESTCreateUpdateStrategy)(nil)