/*
 * MinIO Cloud Storage, (C) 2020 MinIO, Inc.
 *
 * 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 cmd

import (
	"context"
	"encoding/xml"
	"path"

	"github.com/minio/minio-go/v6/pkg/tags"
)

func saveBucketTagging(ctx context.Context, objAPI ObjectLayer, bucket string, t *tags.Tags) error {
	data, err := xml.Marshal(t)
	if err != nil {
		return toObjectErr(err, bucket)
	}
	configFile := path.Join(bucketConfigPrefix, bucket, bucketTaggingConfigFile)
	if err := saveConfig(ctx, objAPI, configFile, data); err != nil {
		return toObjectErr(err, bucket)
	}
	return nil
}

func deleteBucketTagging(ctx context.Context, objAPI ObjectLayer, bucket string) error {
	configFile := path.Join(bucketConfigPrefix, bucket, bucketTaggingConfigFile)
	if err := deleteConfig(ctx, objAPI, configFile); err != nil && err != errConfigNotFound {
		return toObjectErr(err, bucket)
	}
	return nil
}

func readBucketTagging(ctx context.Context, objAPI ObjectLayer, bucket string) (*tags.Tags, error) {
	configFile := path.Join(bucketConfigPrefix, bucket, bucketTaggingConfigFile)
	configData, err := readConfig(ctx, objAPI, configFile)
	if err != nil {
		if err == errConfigNotFound {
			return nil, BucketTaggingNotFound{Bucket: bucket}
		}
		return nil, toObjectErr(err, bucket)
	}
	t := &tags.Tags{}
	if err = xml.Unmarshal(configData, t); err != nil {
		return nil, toObjectErr(err, bucket)
	}
	return t, nil
}