"""Script to get, put and delete secrets stored in credstash."""
import argparse
import getpass

from homeassistant.util.yaml import _SECRET_NAMESPACE

REQUIREMENTS = ['credstash==1.14.0', 'botocore==1.7.34']


def run(args):
    """Handle credstash script."""
    parser = argparse.ArgumentParser(
        description=("Modify Home Assistant secrets in credstash."
                     "Use the secrets in configuration files with: "
                     "!secret <name>"))
    parser.add_argument(
        '--script', choices=['credstash'])
    parser.add_argument(
        'action', choices=['get', 'put', 'del', 'list'],
        help="Get, put or delete a secret, or list all available secrets")
    parser.add_argument(
        'name', help="Name of the secret", nargs='?', default=None)
    parser.add_argument(
        'value', help="The value to save when putting a secret",
        nargs='?', default=None)

    # pylint: disable=import-error
    import credstash
    import botocore

    args = parser.parse_args(args)
    table = _SECRET_NAMESPACE

    try:
        credstash.listSecrets(table=table)
    except botocore.errorfactory.ClientError:
        credstash.createDdbTable(table=table)

    if args.action == 'list':
        secrets = [i['name'] for i in credstash.listSecrets(table=table)]
        deduped_secrets = sorted(set(secrets))

        print('Saved secrets:')
        for secret in deduped_secrets:
            print(secret)
        return 0

    if args.name is None:
        parser.print_help()
        return 1

    if args.action == 'put':
        if args.value:
            the_secret = args.value
        else:
            the_secret = getpass.getpass('Please enter the secret for {}: '
                                         .format(args.name))
        current_version = credstash.getHighestVersion(args.name, table=table)
        credstash.putSecret(args.name,
                            the_secret,
                            version=int(current_version) + 1,
                            table=table)
        print('Secret {} put successfully'.format(args.name))
    elif args.action == 'get':
        the_secret = credstash.getSecret(args.name, table=table)
        if the_secret is None:
            print('Secret {} not found'.format(args.name))
        else:
            print('Secret {}={}'.format(args.name, the_secret))
    elif args.action == 'del':
        credstash.deleteSecrets(args.name, table=table)
        print('Deleted secret {}'.format(args.name))
