# -*- coding: utf-8 -*-
#
# ITerativ GmbH
# http://www.iterativ.ch/
#
# Copyright (c) 2019 ITerativ GmbH. All rights reserved.
#
# Created on 2019-10-01
# @author: chrigu <christian.cueni@iterativ.ch>

import graphene
from django.contrib.auth import authenticate, login
from graphene import relay

from registration.models import License


class LoginError(graphene.ObjectType):
    field = graphene.String()


class Login(relay.ClientIDMutation):
    class Input:
        username_input = graphene.String()
        password_input = graphene.String()

    success = graphene.Boolean()
    errors = graphene.List(LoginError)  # todo: change for consistency

    @classmethod
    def mutate_and_get_payload(cls, root, info, **kwargs):

        user = authenticate(username=kwargs.get('username_input'), password=kwargs.get('password_input'))
        if user is None:
            error = LoginError(field='invalid_credentials')
            return cls(success=False, errors=[error])

        user_license = None

        try:
            user_license = License.objects.get(licensee=user)
        except License.DoesNotExist:
            # current users have no license, allow them to login
            pass

        if user_license is not None and not user_license.license_type.active:
            error = LoginError(field='license_inactive')
            return cls(success=False, errors=[error])

        login(info.context, user)
        return cls(success=True, errors=[])


class UserMutations:
    login = Login.Field()