import rq

from redis import Redis


class Connection:

    def __init__(self, config):
        # redis配置信息
        self.redis_host = config.redis.HOST
        self.redis_port = config.redis.PORT
        self.redis_db = config.redis.DB

        # db配置信息
        self.db_host = config.database.HOST
        self.db_port = config.database.PORT
        self.db_user = config.database.USER
        self.db_pwd = config.database.PASSWORD
        self.db_db = config.database.DB

    def __call__(self, *args, **kwargs):
        redis = Redis \
                (
                host=self.redis_host,
                port=self.redis_port,
                db=self.redis_db
            )

        return rq.Connection(redis)

    @staticmethod
    def current():
        kwargs = rq.get_current_connection().get_connection_kwargs()

        kwargs["database"] = kwargs["db"]

        return Connection(**kwargs)

    @property
    def redis_uri(self):
        """获取redis的uri"""

        return 'redis://{}:{}/{}'.format(self.redis_host, self.redis_port, self.redis_db)

    @property
    def redis_conn(self):
        """获取redis的conn"""

        return Redis(host=self.redis_host, port=self.redis_port, db=self.redis_db, health_check_interval=30)

    @property
    def db_uri(self):
        """获取postgressql的uri"""

        return "postgresql+psycopg2://{user}:{pwd}@{host}:{port}/{db}".format(user=self.db_user,
                                                                              pwd=self.db_pwd,
                                                                              host=self.db_host,
                                                                              port=self.db_port,
                                                                              db=self.db_db)