"""ows-metadata connector."""
import config

import phpserialize

import requests

import src.exceptions


class OWSMetadataConnector:
    """ows-metadata connector."""

    def __init__(self):
        """Initialize ows-metadata session."""
        self.session = requests.Session()

    def get_metadata(self, path):
        """Get metadata.

        Args:
            path (str): Path

        Returns:
            (tuple):
                requests.Response
                dict

        Raises:
            NotXML
        """
        response = self.session.request(
            'GET',
            f'https://{config.OWS_METADATA_HOST}{path}',
        )
        decoded_body = dict()
        try:
            decoded_body = phpserialize.loads(
                response.text.encode('utf-8'),
                decode_strings=True,
            )
        except Exception:
            pass
        else:
            metadata = decoded_body.get('metadata', '')
            if response.status_code == 200 and \
                    not metadata.startswith('<?xml'):
                raise src.exceptions.NotXML(metadata)
        return (response, decoded_body)