"""Application configuration."""

import logging
import os
from os.path import abspath, dirname, join, pardir

from abacus_common_logic.constants.constants import DEFAULT_OWS_CLIENT_TIMEOUT
from dotenv import load_dotenv
from owsclient import OwsClient
from owsrequest.ows_client import correlation_id_getter, request_context_getter
from python_pdp_sdk.backends.authorization_backend import (
    AuthorizationBackend,
    PdpAuthorizationBackend,
)
from python_pdp_sdk.connectors.ows_pdp.ows_pdp import OwsPdpClient
from secrets_manager.flask_ext import FlaskSecretsManager

# Load environment variables from a .env file if present
dotenv_path = abspath(join(dirname(__file__), pardir, '.env'))
load_dotenv(dotenv_path)


class Config:
    """Base application configuration.

    Subclass and override for specific environments.
    """

    # Service information
    SERVICE_NAME = 'ows-abacus-schedule'
    SERVICE_VERSION = '1.0.0'

    # Production environment
    PROD_ENVIRONMENT = 'prod'
    DEV_ENVIRONMENT = 'dev'
    QA_ENVIRONMENT = 'qa'
    UAT_ENVIRONMENT = 'uat'
    ENVIRONMENT = os.environ.get('Environment') or DEV_ENVIRONMENT

    # Errors and loggers
    SENTRY = os.environ.get('SENTRY_DSN') or None
    LOGGER_DSN = os.environ.get('LOGGER_DSN') or None
    LOGGER_LEVEL = logging.INFO
    LOGGER_NAME = 'ows1'
    ONLY_LOG_ACCESS_ERRORS = False

    # Generic handlers
    HEALTH_CHECK = '/hello/'

    # Swagger documentation path
    SWAGGER_FILE_PATH = 'spec/ows_abacus_schedule-1.0.0.yaml'

    # Mysql database connection
    MYSQL_DB_USER = os.environ.get('MYSQL_DB_USER')
    MYSQL_DB_PASS = os.environ.get('MYSQL_DB_PASS')
    MYSQL_DB_HOST = os.environ.get('MYSQL_DB_HOST')
    MYSQL_DB_NAME = os.environ.get('MYSQL_DB_NAME', 'royalty_accounting')
    MYSQL_DB_PORT = os.environ.get('MYSQL_DB_PORT', '3306')
    MYSQL_DB_PORT = int(MYSQL_DB_PORT)


secrets_manager_client = FlaskSecretsManager(
    application_context=False,
    environment=Config.ENVIRONMENT,
    service_name=Config.SERVICE_NAME,
    force_remote=True if Config.ENVIRONMENT == Config.DEV_ENVIRONMENT else False,
)


def get_cred_value(cred_name):
    """Return secrets value for given cred_name."""
    return secrets_manager_client.get_cred(cred_name)


if Config.ENVIRONMENT in (
    Config.PROD_ENVIRONMENT,
    Config.QA_ENVIRONMENT,
    Config.UAT_ENVIRONMENT,
):
    Config.MYSQL_DB_PASS = get_cred_value('MYSQL_DB_PASS')
    Config.SENTRY = get_cred_value('SENTRY_DSN')


def setup_ows_client(environment) -> OwsClient:
    """Set up ows-client."""
    return OwsClient(
        environment=environment,
        service_name='ows-abacus-schedule',
        timeout=DEFAULT_OWS_CLIENT_TIMEOUT,
        correlation_id_getter=correlation_id_getter,
        request_context_getter=request_context_getter,
    )


def setup_authorization_backend(ows_client: OwsClient) -> AuthorizationBackend:
    """Set up Authorization Backend."""
    ows_pdp_client = OwsPdpClient(ows_client=ows_client)
    return PdpAuthorizationBackend(ows_pdp_client)


ows_client = setup_ows_client(Config.ENVIRONMENT)
authorization_backend = setup_authorization_backend(ows_client)