"""fingerprint matching module."""
import argparse
from copy import deepcopy
import json

import config
from dejavu import Dejavu
from dejavu.logic.recognizer.file_recognizer import FileRecognizer
import s3_file


def match(bucket, key):
    djv_config = deepcopy(config.DB_CONFIG)
    djv_config['fingerprint_limit'] = 180
    djv = Dejavu(djv_config)
    recognizer = FileRecognizer(djv)
    results = recognizer.recognize_file(bucket, key)
    for result in results['results']:
        del result['file_sha1']
        result['song_name'] = result['song_name'].decode('utf-8')
        result['offset'] = int(result['offset'])
    return results


if __name__ == '__main__':
    # Task entry point.
    parser = argparse.ArgumentParser(prog='matcher')
    parser.add_argument('-b', '--bucket', required=True, help='bucket')
    parser.add_argument('-o', '--object', required=True, help='object')
    args = parser.parse_args()
    matches = match(args.bucket, args.object)
    print(json.dumps(matches))