/*
 * Copyright the original author or 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 openshift

import (
	"strings"

	"github.com/citrusframework/yaks/pkg/apis/yaks/v1alpha1"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/client-go/kubernetes"
)

// IsOpenShift returns true if we are connected to a OpenShift cluster or given cluster type marks cluster as OpenShift.
func IsOpenShiftClusterType(c kubernetes.Interface, clusterType string) (bool, error) {
	var res bool
	var err error
	if clusterType != "" {
		res = strings.EqualFold(clusterType, string(v1alpha1.ClusterTypeOpenShift))
	} else {
		res, err = IsOpenShift(c)
		if err != nil {
			return false, err
		}
	}
	return res, nil
}

// IsOpenShift returns true if we are connected to a OpenShift cluster.
func IsOpenShift(client kubernetes.Interface) (bool, error) {
	_, err := client.Discovery().ServerResourcesForGroupVersion("image.openshift.io/v1")
	if err != nil && errors.IsNotFound(err) {
		return false, nil
	} else if err != nil {
		return false, err
	}
	return true, nil
}
