// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 visitor

import (
	bundlev1 "github.com/elastic/harp/api/gen/go/harp/bundle/v1"
)

// InfrastructureAcceptor is the contract for visitor entrypoint.
type InfrastructureAcceptor interface {
	Accept(InfrastructureVisitor)
}

// PlatformAcceptor is the contract for visitor entrypoint.
type PlatformAcceptor interface {
	Accept(PlatformVisitor)
}

// ProductAcceptor is the contract for visitor entrypoint.
type ProductAcceptor interface {
	Accept(ProductVisitor)
}

// ApplicationAcceptor is the contract for visitor entrypoint.
type ApplicationAcceptor interface {
	Accept(ApplicationVisitor)
}

// InfrastructureVisitor describes visitor method used for tree walk.
type InfrastructureVisitor interface {
	Error() error
	VisitForProvider(obj *bundlev1.InfrastructureNS)
	VisitForRegion(obj *bundlev1.InfrastructureRegionNS)
	VisitForService(obj *bundlev1.InfrastructureServiceNS)
}

// PlatformVisitor describes visitor method used for tree walk.
type PlatformVisitor interface {
	Error() error
	VisitForRegion(obj *bundlev1.PlatformRegionNS)
	VisitForComponent(obj *bundlev1.PlatformComponentNS)
}

// ProductVisitor describes visitor method used for tree walk.
type ProductVisitor interface {
	Error() error
	VisitForComponent(obj *bundlev1.ProductComponentNS)
}

// ApplicationVisitor describes visitor method used for tree walk.
type ApplicationVisitor interface {
	Error() error
	VisitForComponent(obj *bundlev1.ApplicationComponentNS)
}

// TemplateVisitor is a bundle template visitor.
type TemplateVisitor interface {
	Error() error
	Visit(*bundlev1.Template)
}
