"""Configuration class for the broker."""
import os

from landscape.client.deployment import Configuration


class BrokerConfiguration(Configuration):
    """Specialized configuration for the Landscape Broker.

    @cvar required_options: C{["url"]}
    """

    def __init__(self):
        super().__init__()
        self._original_http_proxy = os.environ.get("http_proxy")
        self._original_https_proxy = os.environ.get("https_proxy")

    @property
    def exchange_store_path(self):
        return os.path.join(self.data_path, "exchange.database")

    def make_parser(self):
        """Parser factory for broker-specific options.

        @return: An L{OptionParser} preset for all the options
            from L{Configuration.make_parser} plus:
              - C{account_name}
              - C{registration_key}
              - C{computer_title}
              - C{exchange_interval} (C{15*60})
              - C{urgent_exchange_interval} (C{1*60})
              - C{http_proxy}
              - C{https_proxy}
              - C{hostagent_uid}
        """
        parser = super().make_parser()

        parser.add_option(
            "-a",
            "--account-name",
            metavar="NAME",
            help="The account this computer belongs to.",
        )
        parser.add_option(
            "-p",
            "--registration-key",
            metavar="KEY",
            help="The account-wide key used for registering clients.",
        )
        parser.add_option(
            "-t",
            "--computer-title",
            metavar="TITLE",
            help="The title of this computer",
        )
        parser.add_option(
            "--exchange-interval",
            default=15 * 60,
            type="int",
            metavar="INTERVAL",
            help="The number of seconds between server exchanges.",
        )
        parser.add_option(
            "--urgent-exchange-interval",
            default=1 * 60,
            type="int",
            metavar="INTERVAL",
            help="The number of seconds between urgent server exchanges.",
        )
        parser.add_option(
            "--ping-interval",
            default=30,
            type="int",
            metavar="INTERVAL",
            help="The number of seconds between pings.",
        )
        parser.add_option(
            "--http-proxy",
            metavar="URL",
            help="The URL of the HTTP proxy, if one is needed.",
        )
        parser.add_option(
            "--https-proxy",
            metavar="URL",
            help="The URL of the HTTPS proxy, if one is needed.",
        )
        parser.add_option(
            "--access-group",
            default="",
            help="Suggested access group for this computer.",
        )
        parser.add_option(
            "--tags",
            help="Comma separated list of tag names to be sent "
            "to the server.",
        )
        parser.add_option(
            "--hostagent-uid",
            help="Only set this value if this computer is a WSL instance "
            "managed by Landscape, in which case set it to be the uid that "
            "Landscape assigned to the host machine.",
        )

        return parser

    @property
    def message_store_path(self):
        """Get the path to the message store."""
        return os.path.join(self.data_path, "messages")

    def load(self, args):
        """
        Load options from command line arguments and a config file.

        Load the configuration with L{Configuration.load}, and then set
        C{http_proxy} and C{https_proxy} environment variables based on
        that config data.
        """
        super().load(args)
        if self.http_proxy:
            os.environ["http_proxy"] = self.http_proxy
        elif self._original_http_proxy:
            os.environ["http_proxy"] = self._original_http_proxy

        if self.https_proxy:
            os.environ["https_proxy"] = self.https_proxy
        elif self._original_https_proxy:
            os.environ["https_proxy"] = self._original_https_proxy
