"""Functions for creating XML output."""
from structlog import get_logger

from passbook.lib.utils.template import render_to_string
from passbook.providers.saml.xml_signing import get_signature_xml

LOGGER = get_logger()


def get_authnrequest_xml(parameters, signed=False):
    """Get AuthN Request XML"""
    # Reset signature.
    params = {}
    params.update(parameters)
    params['AUTHN_REQUEST_SIGNATURE'] = ''

    unsigned = render_to_string('saml/sp/xml/authn_request.xml', params)
    LOGGER.debug('AuthN Request', unsigned=unsigned)
    if not signed:
        return unsigned

    # Sign it.
    signature_xml = get_signature_xml()
    params['AUTHN_REQUEST_SIGNATURE'] = signature_xml
    signed = render_to_string('saml/sp/xml/authn_request.xml', params)

    LOGGER.debug('AuthN Request', signed=signed)
    return signed