from dataclasses import dataclass, field
from typing import Any


@dataclass
class TaskResult:
    _success: bool
    outputs: dict[str, Any] = field(default_factory=dict)
    error_message: str = ""

    def is_success(self) -> bool:
        return self._success

    def is_failure(self) -> bool:
        return not self._success

    @classmethod
    def success(cls, outputs: dict[str, Any] | None = None) -> "TaskResult":
        return cls(_success=True, outputs=outputs or {})

    @classmethod
    def failure(cls, error_message: str) -> "TaskResult":
        return cls(_success=False, error_message=error_message)