/*
 * Minio Cloud Storage, (C) 2017 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 (
	"io"

	"github.com/minio/minio-go/pkg/policy"
	"github.com/minio/minio/pkg/errors"
	"github.com/minio/minio/pkg/hash"
)

// GatewayUnsupported list of unsupported call stubs for gateway.
type GatewayUnsupported struct{}

// ListMultipartUploads lists all multipart uploads.
func (a GatewayUnsupported) ListMultipartUploads(bucket string, prefix string, keyMarker string, uploadIDMarker string, delimiter string, maxUploads int) (lmi ListMultipartsInfo, err error) {
	return lmi, errors.Trace(NotImplemented{})
}

// NewMultipartUpload upload object in multiple parts
func (a GatewayUnsupported) NewMultipartUpload(bucket string, object string, metadata map[string]string) (uploadID string, err error) {
	return "", errors.Trace(NotImplemented{})
}

// CopyObjectPart copy part of object to other bucket and object
func (a GatewayUnsupported) CopyObjectPart(srcBucket string, srcObject string, destBucket string, destObject string, uploadID string, partID int, startOffset int64, length int64, metadata map[string]string) (pi PartInfo, err error) {
	return pi, errors.Trace(NotImplemented{})
}

// PutObjectPart puts a part of object in bucket
func (a GatewayUnsupported) PutObjectPart(bucket string, object string, uploadID string, partID int, data *hash.Reader) (pi PartInfo, err error) {
	return pi, errors.Trace(NotImplemented{})
}

// ListObjectParts returns all object parts for specified object in specified bucket
func (a GatewayUnsupported) ListObjectParts(bucket string, object string, uploadID string, partNumberMarker int, maxParts int) (lpi ListPartsInfo, err error) {
	return lpi, errors.Trace(NotImplemented{})
}

// AbortMultipartUpload aborts a ongoing multipart upload
func (a GatewayUnsupported) AbortMultipartUpload(bucket string, object string, uploadID string) error {
	return errors.Trace(NotImplemented{})
}

// CompleteMultipartUpload completes ongoing multipart upload and finalizes object
func (a GatewayUnsupported) CompleteMultipartUpload(bucket string, object string, uploadID string, uploadedParts []CompletePart) (oi ObjectInfo, err error) {
	return oi, errors.Trace(NotImplemented{})
}

// SetBucketPolicies sets policy on bucket
func (a GatewayUnsupported) SetBucketPolicies(bucket string, policyInfo policy.BucketAccessPolicy) error {
	return errors.Trace(NotImplemented{})
}

// GetBucketPolicies will get policy on bucket
func (a GatewayUnsupported) GetBucketPolicies(bucket string) (bal policy.BucketAccessPolicy, err error) {
	return bal, errors.Trace(NotImplemented{})
}

// DeleteBucketPolicies deletes all policies on bucket
func (a GatewayUnsupported) DeleteBucketPolicies(bucket string) error {
	return errors.Trace(NotImplemented{})
}

// HealBucket - Not implemented stub
func (a GatewayUnsupported) HealBucket(bucket string) error {
	return errors.Trace(NotImplemented{})
}

// ListBucketsHeal - Not implemented stub
func (a GatewayUnsupported) ListBucketsHeal() (buckets []BucketInfo, err error) {
	return nil, errors.Trace(NotImplemented{})
}

// HealObject - Not implemented stub
func (a GatewayUnsupported) HealObject(bucket, object string) (int, int, error) {
	return 0, 0, errors.Trace(NotImplemented{})
}

// ListObjectsV2 - Not implemented stub
func (a GatewayUnsupported) ListObjectsV2(bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (result ListObjectsV2Info, err error) {
	return result, errors.Trace(NotImplemented{})
}

// ListObjectsHeal - Not implemented stub
func (a GatewayUnsupported) ListObjectsHeal(bucket, prefix, marker, delimiter string, maxKeys int) (loi ListObjectsInfo, e error) {
	return loi, errors.Trace(NotImplemented{})
}

// ListUploadsHeal - Not implemented stub
func (a GatewayUnsupported) ListUploadsHeal(bucket, prefix, marker, uploadIDMarker,
	delimiter string, maxUploads int) (lmi ListMultipartsInfo, e error) {
	return lmi, errors.Trace(NotImplemented{})
}

// AnonListObjects - List objects anonymously
func (a GatewayUnsupported) AnonListObjects(bucket string, prefix string, marker string, delimiter string,
	maxKeys int) (loi ListObjectsInfo, err error) {
	return loi, errors.Trace(NotImplemented{})
}

// AnonListObjectsV2 - List objects in V2 mode, anonymously
func (a GatewayUnsupported) AnonListObjectsV2(bucket, prefix, continuationToken, delimiter string, maxKeys int,
	fetchOwner bool, startAfter string) (loi ListObjectsV2Info, err error) {
	return loi, errors.Trace(NotImplemented{})
}

// AnonGetBucketInfo - Get bucket metadata anonymously.
func (a GatewayUnsupported) AnonGetBucketInfo(bucket string) (bi BucketInfo, err error) {
	return bi, errors.Trace(NotImplemented{})
}

// AnonPutObject creates a new object anonymously with the incoming data,
func (a GatewayUnsupported) AnonPutObject(bucket, object string, data *hash.Reader,
	metadata map[string]string) (ObjectInfo, error) {
	return ObjectInfo{}, errors.Trace(NotImplemented{})
}

// AnonGetObject downloads object anonymously.
func (a GatewayUnsupported) AnonGetObject(bucket, object string, startOffset int64, length int64, writer io.Writer) (err error) {
	return errors.Trace(NotImplemented{})
}

// AnonGetObjectInfo returns stat information about an object anonymously.
func (a GatewayUnsupported) AnonGetObjectInfo(bucket, object string) (objInfo ObjectInfo, err error) {
	return objInfo, errors.Trace(NotImplemented{})
}

// CopyObject copies a blob from source container to destination container.
func (a GatewayUnsupported) CopyObject(srcBucket string, srcObject string, destBucket string, destObject string,
	metadata map[string]string) (objInfo ObjectInfo, err error) {
	return objInfo, errors.Trace(NotImplemented{})
}