//
// Copyright The Athenz 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 util

import (
	"fmt"
	"strings"
)

func ExtractServiceName(tagValues string) (string, string, error) {
	tags := strings.Split(tagValues, ";")
	for _, tag := range tags {
		if strings.HasPrefix(tag, "athenz:") {
			fullServiceName := tag[7:]
			idx := strings.LastIndex(fullServiceName, ".")
			if idx == -1 {
				return "", "", fmt.Errorf("invalid service name: %s", fullServiceName)
			}
			return fullServiceName[:idx], fullServiceName[idx+1:], nil
		}
	}
	return "", "", fmt.Errorf("missing Athenz tag value: %s", tagValues)
}
