import argparse
import datetime
import json
import sys

if __name__ == "__main__":

    description = 'APEX Manifest JSON (stdin) to C++ header (stdout)'
    parser = argparse.ArgumentParser(description=description)
    parser.add_argument('--guard', type=str,
                        default='WVCDM_WV_ANDROID_BUILD_ID_H_',
                        help='Include guard')
    args = parser.parse_args()

    apex_manifest = json.load(sys.stdin)
    output = f'''\
// Copyright {datetime.date.today().year} Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine License
// Agreement.
//
#ifndef {args.guard}
#define {args.guard}

#define WV_ANDROID_BUILD_ID "{apex_manifest['version']}"

#endif  // {args.guard}'''
    print(output)