#  Copyright 2021 Collate
#  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.

"""
Build and document all supported Engines
"""
import logging

from sqlalchemy import create_engine
from sqlalchemy.engine.base import Engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.orm.session import Session

from metadata.ingestion.source.sql_source_common import SQLConnectionConfig

logger = logging.getLogger("Utils")


def get_engine(config: SQLConnectionConfig, verbose: bool = False) -> Engine:
    """
    Given an SQL configuration, build the SQLAlchemy Engine
    """
    logger.info(f"Building Engine for {config.get_service_name()}...")

    engine = create_engine(
        config.get_connection_url(),
        **config.options,
        connect_args=config.connect_args,
        echo=verbose,
    )

    return engine


def create_and_bind_session(engine: Engine) -> Session:
    """
    Given an engine, create a session bound
    to it to make our operations.
    """
    session = sessionmaker()
    session.configure(bind=engine)
    return session()