from urllib.parse import urlparse
from lxml.html import fromstring as lxml_from_string

from panera_sync.fill_form import get_form_fields


def saml_submit(session, response):
    origin_url = response.url
    url_parse_result = urlparse(origin_url)
    headers = {
        "Origin": f"{url_parse_result.scheme}://{url_parse_result.netloc}",
        "Referer": origin_url,
    }
    parsed = lxml_from_string(response.text)
    form = parsed.xpath("//form")[0]
    post_url, to_submit = get_form_fields(form)
    return session.post(post_url, data=to_submit, headers=headers)


def saml_check(session, response, response_text=None):
    parsed = lxml_from_string(response.text)
    witness = parsed.xpath('//form//input[contains(@name,"SAML")]')

    if len(witness) != 0:
        return saml_submit(session, response)