python-dependency-injector/examples/miniapps/application-multiple-containers/example/services.py

"""Services module."""

import logging
import sqlite3
from typing import Dict

from mypy_boto3_s3 import S3Client


class BaseService:

    def __init__(self) -> None:
        self.logger = logging.getLogger(
            f'{__name__}.{self.__class__.__name__}',
        )


class UserService(BaseService):

    def __init__(self, db: sqlite3.Connection) -> None:
        self.db = db
        super().__init__()

    def get_user(self, email: str) -> Dict[str, str]:
        self.logger.debug('User %s has been found in database', email)
        return {'email': email, 'password_hash': '...'}


class AuthService(BaseService):

    def __init__(self, db: sqlite3.Connection, token_ttl: int) -> None:
        self.db = db
        self.token_ttl = token_ttl
        super().__init__()

    def authenticate(self, user: Dict[str, str], password: str) -> None:
        assert password is not None
        self.logger.debug(
            'User %s has been successfully authenticated',
            user['email'],
        )


class PhotoService(BaseService):

    def __init__(self, db: sqlite3.Connection, s3: S3Client) -> None:
        self.db = db
        self.s3 = s3
        super().__init__()

    def upload_photo(self, user: Dict[str, str], photo_path: str) -> None:
        self.logger.debug(
            'Photo %s has been successfully uploaded by user %s',
            photo_path,
            user['email'],
        )