# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this
# software and associated documentation files (the "Software"), to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# This code expects that you have AWS credentials setup per:
# https://boto3.amazonaws.com/v1/documentation/api/latest/guide/quickstart.html
from logging import basicConfig, getLogger, INFO

from botocore.exceptions import ClientError

from pyqldb.driver.qldb_driver import QldbDriver
from pyqldbsamples.constants import Constants

logger = getLogger(__name__)
basicConfig(level=INFO)


def create_qldb_driver(ledger_name=Constants.LEDGER_NAME, region_name=None, endpoint_url=None, boto3_session=None):
    """
    Create a QLDB driver for executing transactions.

    :type ledger_name: str
    :param ledger_name: The QLDB ledger name.

    :type region_name: str
    :param region_name: See [1].

    :type endpoint_url: str
    :param endpoint_url: See [1].

    :type boto3_session: :py:class:`boto3.session.Session`
    :param boto3_session: The boto3 session to create the client with (see [1]).

    :rtype: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
    :return: A QLDB driver object.

    [1]: `Boto3 Session.client Reference <https://boto3.amazonaws.com/v1/documentation/api/latest/reference/core/session.html#boto3.session.Session.client>`.
    """
    qldb_driver = QldbDriver(ledger_name=ledger_name, region_name=region_name, endpoint_url=endpoint_url,
                             boto3_session=boto3_session)
    return qldb_driver


def main(ledger_name=Constants.LEDGER_NAME):
    """
    Connect to a given ledger using default settings.
    """
    try:
        with create_qldb_driver(ledger_name) as driver:
            logger.info('Listing table names ')
            for table in driver.list_tables():
                logger.info(table)
    except ClientError as ce:
        logger.exception('Unable to list tables.')
        raise ce


if __name__ == '__main__':
    main()