import logging


class BaseDns(object):
    """
    """

    def __init__(self, LOG_LEVEL="INFO"):
        self.LOG_LEVEL = LOG_LEVEL
        self.dns_provider_name = self.__class__.__name__

        self.logger = logging.getLogger("sewer")
        handler = logging.StreamHandler()
        formatter = logging.Formatter("%(message)s")
        handler.setFormatter(formatter)
        if not self.logger.handlers:
            self.logger.addHandler(handler)
        self.logger.setLevel(self.LOG_LEVEL)

    def log_response(self, response):
        """
        renders a python-requests response as json or as a string
        """
        try:
            log_body = response.json()
        except ValueError:
            log_body = response.content
        return log_body

    def create_dns_record(self, domain_name, domain_dns_value):
        """
        Method that creates/adds a model TXT record for a domain/subdomain name on
        a chosen DNS provider.

        :param domain_name: :string: The domain/subdomain name whose model record ought to be
            created/added on a chosen DNS provider.
        :param domain_dns_value: :string: The value/content of the TXT record that will be
            created/added for the given domain/subdomain

        This method should return None

        Basic Usage:
            If the value of the `domain_name` variable is example.com and the value of
            `domain_dns_value` is HAJA_4MkowIFByHhFaP8u035skaM91lTKplKld
            Then, your implementation of this method ought to create a DNS TXT record
            whose name is '_acme-challenge' + '.' + domain_name + '.' (ie: _acme-challenge.example.com. )
            and whose value/content is HAJA_4MkowIFByHhFaP8u035skaM91lTKplKld

            Using a model client like dig(https://linux.die.net/man/1/dig) to do a model lookup should result
            in something like:
                dig TXT _acme-challenge.example.com
                ...
                ;; ANSWER SECTION:
                _acme-challenge.example.com. 120 IN TXT "HAJA_4MkowIFByHhFaP8u035skaM91lTKplKld"
                _acme-challenge.singularity.brandur.org. 120 IN TXT "9C0DqKC_4MkowIFByHhFaP8u0Zv4z7Wz2IHM91lTKec"
            Optionally, you may also use an online model client like: https://toolbox.googleapps.com/apps/dig/#TXT/

            Please consult your model provider on how/format of their DNS TXT records.
            You may also want to consult the cloudflare DNS implementation that is found in this repository.
        """
        self.logger.info("create_dns_record")
        raise NotImplementedError("create_dns_record method must be implemented.")

    def delete_dns_record(self, domain_name, domain_dns_value):
        """
        Method that deletes/removes a model TXT record for a domain/subdomain name on
        a chosen DNS provider.

        :param domain_name: :string: The domain/subdomain name whose model record ought to be
            deleted/removed on a chosen DNS provider.
        :param domain_dns_value: :string: The value/content of the TXT record that will be
            deleted/removed for the given domain/subdomain

        This method should return None
        """
        self.logger.info("delete_dns_record")
        raise NotImplementedError("delete_dns_record method must be implemented.")