/*
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 pvecloud

import (
	"fmt"
	"io"
	"os"
	"strconv"

	pve "git.giftfish.de/ston1th/pve-go"
	cloudprovider "k8s.io/cloud-provider"
)

const (
	providerName = pve.PVEScheme
	scheme       = providerName + "://"
)

type cloud struct {
	client    *pve.Client
	instances cloudprovider.Instances
	//zones     cloudprovider.Zones
	//routes    cloudprovider.Routes
	//network string
}

func newCloud(_ io.Reader) (cloudprovider.Interface, error) {
	api := os.Getenv("PVE_API")
	if api == "" {
		return nil, fmt.Errorf("missing required env PVE_API")
	}
	user := os.Getenv("PVE_USER")
	if user == "" {
		return nil, fmt.Errorf("missing required env PVE_USER")
	}
	pass := os.Getenv("PVE_PASSWORD")
	if pass == "" {
		return nil, fmt.Errorf("missing required env PVE_PASSWORD")
	}
	//node := os.Getenv("NODE_NAME")

	insecure, _ := strconv.ParseBool(os.Getenv("PVE_INSECURE"))
	client := pve.NewClient(
		pve.WithEndpoint(api),
		pve.WithCredentials(user, pass),
		pve.WithInsecureClient(insecure),
		//pvego.WithDebugWriter(os.Stderr),
	)

	return &cloud{
		client:    client,
		instances: newInstances(client),
		//zones:     newZones(client, nodeName),
		//routes:    nil,
		//network:   network,
	}, nil
}

func (c *cloud) Initialize(clientBuilder cloudprovider.ControllerClientBuilder, stop <-chan struct{}) {
}

func (c *cloud) Instances() (cloudprovider.Instances, bool) {
	return c.instances, true
}

func (c *cloud) Zones() (cloudprovider.Zones, bool) {
	//return c.zones, true
	return nil, false
}

func (c *cloud) LoadBalancer() (cloudprovider.LoadBalancer, bool) {
	return nil, false
}

func (c *cloud) Clusters() (cloudprovider.Clusters, bool) {
	return nil, false
}

func (c *cloud) Routes() (cloudprovider.Routes, bool) {
	return nil, false
	/*
		if len(c.network) > 0 {
			r, err := newRoutes(c.client, c.network)
			if err != nil {
				return nil, false
			}
			return r, true
		}
		return nil, false // If no network is configured, disable the routes part
	*/

}

func (c *cloud) ProviderName() string {
	return providerName
}

func (c *cloud) ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string) {
	return nil, nil
}

func (c *cloud) HasClusterID() bool {
	return true
}

func init() {
	cloudprovider.RegisterCloudProvider(providerName, func(config io.Reader) (cloudprovider.Interface, error) {
		return newCloud(config)
	})
}