import base64
import binascii
import logging
from datetime import datetime, timedelta
from urllib.parse import unquote_plus

import requests
# import service_clients
from django.contrib.auth import get_user_model
from django.utils.timezone import make_aware
from oauth2_provider.models import get_access_token_model
from oauth2_provider.oauth2_validators import OAuth2Validator as BaseOAuth2Validator
from .settings import oauth2_settings
from django.conf import settings

log = logging.getLogger("oauth2_provider")

AccessTokenModel = get_access_token_model()
UserModel = get_user_model()


class OAuth2Validator(BaseOAuth2Validator):  # pylint: disable=w0223
    def validate_user(self, username, password, client, request, *args, **kwargs):
        auth_fields = getattr(request, 'auth_fields', 'username:password').split(':')

        if len(auth_fields) != 2:
            return False

        user_field, pass_field = auth_fields

        if user_field not in ['phone_number', 'username', 'email']:
            return False

        if pass_field not in ['password', 'otp', 'ott']:
            return False

        if not username or not password:
            return False

        user = UserModel.objects.filter(**{user_field: username}).first()

        if not user:
            return False

        if not user.check_auth(pass_field, password):
            return False

        if user.is_active:
            request.user = user
            return True

        return False