// Copyright 2018 Google LLC

//

// 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

//

// https://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.

#include "google/cloud/storage/hashing_options.h"

#include "google/cloud/storage/internal/base64.h"

#include "google/cloud/storage/internal/crc32c.h"

#include "google/cloud/storage/internal/md5hash.h"

#include "google/cloud/internal/big_endian.h"

#include <string>

namespace google {

namespace cloud {

namespace storage {

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN

std::string ComputeMD5Hash(absl::string_view payload) {

return internal::Base64Encode(storage_internal::MD5Hash(payload));

}

std::string ComputeMD5Hash(std::string const& payload) {

return ComputeMD5Hash(absl::string_view(payload));

}

std::string ComputeCrc32cChecksum(absl::string_view payload) {

auto checksum = storage_internal::Crc32c(payload);

std::string const hash = google::cloud::internal::EncodeBigEndian(checksum);

return internal::Base64Encode(hash);

}

std::string ComputeCrc32cChecksum(std::string const& payload) {

return ComputeCrc32cChecksum(absl::string_view(payload));

}

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END

} // namespace storage

} // namespace cloud

} // namespace google