/*
 * Copyright (C) 2025 The Android Open Source Project
 *
 * 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.
 */

#include "cuttlefish/host/commands/assemble_cvd/disk/pflash.h"

#include "cuttlefish/common/libs/utils/files.h"
#include "cuttlefish/host/libs/config/config_instance_derived.h"
#include "cuttlefish/host/libs/config/cuttlefish_config.h"
#include "cuttlefish/host/libs/config/data_image.h"
#include "cuttlefish/result/result.h"

namespace cuttlefish {

Result<void> InitializePflash(
    const CuttlefishConfig::InstanceSpecific& instance) {
  if (FileExists(PflashPath(instance))) {
    return {};
  }

  auto boot_size_mb = FileSize(instance.bootloader()) / (1 << 20);

  // Pad out bootloader space to 4MB
  CF_EXPECTF(CreateBlankEmptyImage(PflashPath(instance), 4 - boot_size_mb),
             "Failed to create '{}'", PflashPath(instance));
  return {};
}

}  // namespace cuttlefish
