from rest_framework import serializers

from apps.live_monitoring.models import Camera


class CameraSerializer(serializers.ModelSerializer):
    """Public camera card. Stream URLs and credentials are never listed here —
    clients must go through the tokenized ``access`` / ``verify`` flow.
    """

    protocol = serializers.SerializerMethodField()

    class Meta:
        model = Camera
        fields = ["id", "name", "facility", "processing_line", "protocol", "active"]

    def get_protocol(self, obj: Camera) -> str:
        return obj.resolved_protocol()