from datetime import datetime

class StepResult:
    """自动化步骤执行结果模型"""
    def __init__(self, step_name: str, success: bool, message: str, elapsed: float = 0):
        self.step_name = step_name
        self.success = success
        self.message = message
        self.elapsed = elapsed
        self.timestamp = datetime.now()

    def __str__(self):
        icon = "✅" if self.success else "❌"
        return f"{icon} {self.step_name}: {self.message} ({self.elapsed:.2f}s)"