// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 helper

import (
	"fmt"

	"github.com/gardener/gardener/pkg/gardenlet/apis/config"
)

// SeedNameFromSeedConfig returns an empty string if the given seed config is nil, or the
// name inside the seed config.
func SeedNameFromSeedConfig(seedConfig *config.SeedConfig) string {
	if seedConfig == nil {
		return ""
	}
	return seedConfig.Seed.Name
}

func GetOverrideHelmValues(conf *config.GardenletConfiguration, compName string) (map[string]interface{}, error) {

	emptyValues := make(map[string]interface{})
	if conf.OverrideHelmValues == nil {
		return emptyValues, nil
	}
	data := conf.OverrideHelmValues.UnstructuredContent()

	if len(data) == 0 {
		return emptyValues, nil
	}

	values, ok := data[compName]
	if !ok {
		return emptyValues, nil
	}
	overrideValues, ok := values.(map[string]interface{})
	if !ok {
		return emptyValues, fmt.Errorf("invalid override helm values in gardenlet config, values: %v", values)
	}
	return overrideValues, nil
}