from django.contrib.auth.password_validation import validate_password as django_validate_password
from django.core.exceptions import ValidationError
from rest_framework import serializers
from apps.user.models import User
from apps.tasks import send_email


class RegisterSerializer(serializers.ModelSerializer):
    
    class Meta:
        model = User
        fields = ["username", "email", "password"]
        extra_kwargs = {
            "password": {"write_only": True}
        }

    def validate_email(self, value):
        if User.objects.filter(email=value).exists():
            raise serializers.ValidationError("Email already taken")
        return value

    def validate_password(self, value):
        try:
            django_validate_password(value)
        except ValidationError as error:
            raise serializers.ValidationError(error.messages)

        return value

    def create(self, validated_data):
        user = User.objects.create_user(
            validated_data["username"], 
            validated_data["email"], 
            validated_data["password"]
        )
        
        send_email.delay(user.pk)        

        return user