fischertechnik-factory-twin/simulator/data_models/crate.py

from dataclasses import dataclass, field
import itertools
from data_models.workpiece import Workpiece

@dataclass
class Crate:
    id: int = field(default_factory=itertools.count().__next__, init=False) # autogen ids on creation
    workpiece: Workpiece | None = None

    def to_dict(self) -> dict:
        return {
            "id": self.id,
            "workpiece": self.workpiece.to_dict() if self.workpiece else None
        }