// Copyright 2022 The Pigweed Authors
//
// 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 "pw_transfer/transfer.h"

#include "pw_assert/check.h"
#include "pw_log/log.h"
#include "pw_status/try.h"
#include "pw_transfer/internal/chunk.h"

namespace pw::transfer {

void TransferService::HandleChunk(ConstByteSpan message,
                                  internal::TransferType type) {
  internal::Chunk chunk;
  if (Status status = internal::DecodeChunk(message, chunk); !status.ok()) {
    PW_LOG_ERROR("Failed to decode transfer chunk: %d", status.code());
    return;
  }

  if (chunk.IsInitialChunk()) {
    // TODO(frolv): Right now, transfer ID and handler ID are the same thing.
    // The transfer ID should be made into a unique session ID instead.
    thread_.StartServerTransfer(type,
                                chunk.transfer_id,
                                chunk.transfer_id,
                                max_parameters_,
                                chunk_timeout_,
                                max_retries_);
  }

  thread_.ProcessServerChunk(message);
}

}  // namespace pw::transfer