# -*- coding: utf-8 -*-
# !/usr/bin/env python

import datetime
import logging
import time

from django.conf import settings
from typing import Optional, TYPE_CHECKING

from apps.web.user.models import MyUser
from apps.web.utils import trace_call
from middlewares.django_jwt_session_auth import jwt_login, jwt_session_key

if TYPE_CHECKING:
    from django.http.request import HttpRequest
    from django.http.response import HttpResponseRedirect

logger = logging.getLogger(__name__)


def user_to_payload(user):
    # type: (MyUser)->dict
    exp = datetime.datetime.now() + datetime.timedelta(seconds = 3600 * 24 * 30)
    return {
        'user_id': str(user.id),
        'iat': int(time.time()),
        'exp': exp
    }


def payload_to_user(payload):
    # type: (dict)->Optional[MyUser]
    if not payload:
        return None

    user_id = payload.get('user_id')
    try:
        user = MyUser.objects.get(id = user_id)
    except:
        user = None

    return user


def end_user_login(request, user):
    # type:(HttpRequest, MyUser)->str
    return jwt_login(settings.SERVICE_DOMAIN.USER, user, request)

end_user_login_session_key = jwt_session_key(settings.SERVICE_DOMAIN.USER)


@trace_call(logger = logger)
def response_with_login(request, user, response):
    # type:(HttpRequest, MyUser, HttpResponseRedirect)->HttpResponseRedirect

    token = end_user_login(request, user)

    logger.debug("{} login in.".format(repr(user)))

    response.set_cookie(key = settings.JWT_AUTH_DOMAIN_COOKIE_NAME,
                        value = settings.SERVICE_DOMAIN.USER,
                        max_age = 3600 * 24 * 30,
                        domain = settings.COOKIE_DOMAIN,
                        secure = False,
                        httponly = False)
    response.set_cookie(key = end_user_login_session_key,
                        value = token,
                        max_age = 3600 * 24 * 30,
                        domain = settings.COOKIE_DOMAIN,
                        secure = False,
                        httponly = False)

    return response