from typing import Optional, Union, List
from pydantic import BaseModel, model_validator, PrivateAttr


class ExportRequest(BaseModel):
    # uuid which maps to a specific export request, used for tracking and logging
    task_id: Union[str, None]
    # uuid which maps to a specific export operation, used for tracking and logging. subtask is the child of the
    # task, where the work has been distributed across workers
    subtask_id: Union[str, None]
    # associated portfolio id for the export request
    portfolio_id: int
    # list of scenario ids to export
    scenario_ids: List[int]
    # boolean which will overwrite the scenario ids. If this is true, we will only export the default plan for each
    # property and will ignore the scenario ids
    default_plans_only: Optional[bool] = False

    # Private attribute to indicate whether scenario_ids should be ignored due to default_plans_only being True
    _scenario_ids_ignored: bool = PrivateAttr(default=False)

    @model_validator(mode="after")
    def validate_default_plan_override(self):
        """
        If default_plans_only is True and scenario_ids were provided,
        we allow execution but make it explicit that scenario_ids
        will be ignored.
        """
        if self.default_plans_only and self.scenario_ids:
            # We do NOT raise — we allow execution.
            # We just mark the object so the handler can log/return a warning.
            object.__setattr__(self, "_scenario_ids_ignored", True)
        else:
            object.__setattr__(self, "_scenario_ids_ignored", False)

        return self

    @property
    def scenario_ids_ignored(self) -> bool:
        return self._scenario_ids_ignored