from loguru import logger

from odoo_openupgrade_wizard.tools_docker import get_docker_client


def get_postgres_container():
    client = get_docker_client()
    return client.containers.list(filters={"name": "db"})[0]


def execute_sql_request(request, database="postgres"):
    container = get_postgres_container()
    docker_command = (
        "psql --username=odoo --dbname={database} -t"
        ' -c "{request}"'.format(database=database, request=request)
    )
    logger.debug(
        "Executing the following command in postgres container"
        " on database %s \n %s" % (database, request)
    )
    docker_result = container.exec_run(docker_command)
    if docker_result.exit_code != 0:
        raise Exception(
            "Request %s failed on database %s. Exit Code : %d"
            % (request, database, docker_result.exit_code)
        )
    lines = docker_result.output.decode("utf-8").split("\n")
    result = []
    for line in lines:
        if not line:
            continue
        result.append([x.strip() for x in line.split("|")])
    return result


def ensure_database_exists(database: str):
    """
    - Connect to postgres container.
    - Check if the database exist.
    - if not, create it.
    """
    request = "select datname FROM pg_database WHERE datistemplate = false;"

    result = execute_sql_request(request)
    if [database] in result:
        return

    logger.info("Create database '%s' ..." % database)
    request = "CREATE DATABASE {database} owner odoo;".format(
        database=database
    )
    execute_sql_request(request)