from django.contrib.auth import get_user_model
from django.utils.translation import gettext_lazy as _
from rest_framework import serializers
from rest_framework.validators import UniqueValidator

from .validators.username import usernameValidator

class Pucko_User_Serializer(serializers.ModelSerializer):

    class Meta:
        model = get_user_model()
        fields = (
                'username',
                'email',
                'is_staff',
                'date_joined',
                'slug'
        )
        read_only_fields = ('is_staff', 'date_joined', 'slug')
        lookup_field = 'slug'
        extra_kwargs = {'url': {'lookup_field': 'slug'}}

class Pucko_CreateUser_Serializer(serializers.ModelSerializer):
    username = serializers.CharField(required=True, validators=[UniqueValidator(queryset=get_user_model().objects.all()), usernameValidator()])
    password = serializers.CharField(required=True, write_only=True)
    password2 = serializers.CharField(required=True, write_only=True)

    class Meta:
        model = get_user_model()
        fields = ('username', 'password', 'password2')

    def validate(self, attrs):
        if attrs['password'] != attrs['password2']:
            raise serializers.ValidationError({"password": _("Password fields didn't match")})
        return attrs

    def create(self, validated_data):
        user = get_user_model().objects.create(
            username=validated_data['username']
        )
        user.set_password(validated_data['password'])
        user.save()
        return user

class Pucko_Login_Serializer(serializers.ModelSerializer):
    username = serializers.CharField(required=True)
    password = serializers.CharField(required=True, write_only=True)

    class Meta:
        model = get_user_model()
        fields = ('username', 'password')

class Pucko_Renew_Serializer(serializers.Serializer):
    expiry = serializers.DateTimeField(read_only=True)
    token = serializers.CharField(max_length=65, read_only=True)
    user = Pucko_User_Serializer(read_only=True)

    class Meta:
        fields = ("expiry", "token", "user")
        read_only_fields = ("expiry", "token", "user")

class Logout_Serializer(serializers.Serializer):

    class Meta:
        fields = ()

class Change_Password_Serializer(serializers.Serializer):
    old_password = serializers.CharField(required=True, write_only=True)
    new_password = serializers.CharField(required=True, write_only=True)
    message = serializers.CharField(read_only=True)

    class Meta:
        fields = ("old_password", "new_password", "message")