// Copyright 2026 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.
//

#ifndef THIRD_PARTY_CREDENTIO_FORMATS_PDF_MANIFEST_STORE_MERGER_H_
#define THIRD_PARTY_CREDENTIO_FORMATS_PDF_MANIFEST_STORE_MERGER_H_

#include <string>

#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "absl/types/span.h"

namespace credentio {

// Merges one or more serialized C2PA Manifest Store SuperBoxes ('c2pa') into
// a single unified Manifest Store SuperBox.
//
// In accordance with C2PA Spec 2.2 §10.4.3, §15.5.1, and §A.4.2.1, child boxes
// are ordered such that the manifest from the newest PDF increment (the active
// manifest in stores.back()) is placed last in the resulting SuperBox.
absl::StatusOr<std::string> MergeManifestStores(
    absl::Span<const absl::string_view> stores);

}  // namespace credentio

#endif  // THIRD_PARTY_CREDENTIO_FORMATS_PDF_MANIFEST_STORE_MERGER_H_