/*
Copyright 2015 The Kubernetes Authors All rights reserved.

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 registry

import (
	"strings"

	"github.com/kubernetes/deployment-manager/common"
)

type RegistryService interface {
	// List all the registries
	List() ([]*common.Registry, error)
	// Create a new registry
	Create(repository *common.Registry) error
	// Get a registry
	Get(name string) (*common.Registry, error)
	// Delete a registry
	Delete(name string) error
	// Find a registry that backs the given URL
	GetByURL(URL string) (*common.Registry, error)
}

// Registry abstracts a registry that holds templates, which can be
// used in a Deployment Manager configurations. There can be multiple
// implementations of a registry. Currently we support Deployment Manager
// github.com/kubernetes/application-dm-templates
// and helm packages
// github.com/helm/charts
//
type Type struct {
	Collection string
	Name       string
	Version    string
}

// ParseType takes a registry name and parses it into a *registry.Type.
func ParseType(name string) *Type {
	tt := &Type{}

	tList := strings.Split(name, ":")
	if len(tList) == 2 {
		tt.Version = tList[1]
	}

	cList := strings.Split(tList[0], "/")

	if len(cList) == 1 {
		tt.Name = tList[0]
	} else {
		tt.Collection = cList[0]
		tt.Name = cList[1]
	}
	return tt
}

// Registry abstracts type interactions.
type Registry interface {
	// List all the templates at the given path
	List() ([]Type, error)
	// Get the download URL(s) for a given type
	GetURLs(t Type) ([]string, error)
}