from django.utils.translation import ugettext_lazy as _
from django.contrib.auth import get_user_model
from rest_framework import serializers


class AuthTokenByEmailSerializer(serializers.Serializer):
    email = serializers.EmailField()
    password = serializers.CharField()

    def validate(self, attrs):
        email = attrs.get('email')
        password = attrs.get('password')

        if email and password:
            try:
                user = get_user_model().objects.get(email=email)
                is_password_correct = user.check_password(password)
                if not is_password_correct:
                    msg = _('Unable to login with provided credentials.')
                    raise serializers.ValidationError(msg)

                if not user.is_active:
                    msg = _('User account is disabled.')
                    raise serializers.ValidationError(msg)

                attrs['user'] = user
                return attrs
            except get_user_model().DoesNotExist:
                msg = _('Unable to login with provided credentials.')
                raise serializers.ValidationError(msg)
        else:
            msg = _('Must include "email" and "password"')
            raise serializers.ValidationError(msg)