from django.contrib.auth import get_user_model
from rest_framework import serializers

from apps.accounts.models import ApiKey

User = get_user_model()


class PkAsIdMixin(serializers.Serializer):
    """Keep JSON `id` stable after ERD-named primary keys."""

    id = serializers.IntegerField(source="pk", read_only=True)


class SlugPkAsIdMixin(serializers.Serializer):
    """JSON `id` for slug / string primary keys."""

    id = serializers.CharField(source="pk", read_only=True)


class UserSerializer(PkAsIdMixin, serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ["id", "user_name", "display_name", "status", "created_at", "updated_at"]
        read_only_fields = ["id", "user_name", "created_at", "updated_at"]


class LoginSerializer(serializers.Serializer):
    user_name = serializers.CharField(max_length=30)
    password = serializers.CharField(write_only=True)


class ApiKeySerializer(serializers.ModelSerializer):
    class Meta:
        model = ApiKey
        fields = [
            "id",
            "name",
            "prefix",
            "is_active",
            "last_used_at",
            "created_at",
            "updated_at",
            "user",
        ]
        read_only_fields = fields


class ApiKeyCreateSerializer(serializers.Serializer):
    name = serializers.CharField(max_length=100)
    user_id = serializers.IntegerField(required=False)