class DigitalFatigueCompliance:
    """
    数字化疲劳合规管理
    
    参考海事 2026 合规趋势：
    1. 从纸面→数字记录
    2. 从出勤→实操验证
    3. 从次要→核心安全
    """
    
    def __init__(self):
        self.driver_id = None
        self.session_start = None
        self.events = []
        self.fatigue_scores = []
    
    def start_session(self, driver_id: str):
        """开始驾驶会话"""
        self.driver_id = driver_id
        self.session_start = time.time()
        self.events = []
        self.fatigue_scores = []
    
    def log_event(self, event_type: str, severity: str, 
                  perclos: float = 0):
        """记录疲劳事件"""
        self.events.append({
            'timestamp': time.time(),
            'type': event_type,
            'severity': severity,
            'perclos': perclos,
            'driving_duration_min': (time.time() - self.session_start) / 60,
        })
    
    def generate_compliance_report(self) -> dict:
        """生成合规报告"""
        if not self.events:
            return {'status': 'no_data'}
        
        total_events = len(self.events)
        critical_events = sum(1 for e in self.events if e['severity'] == 'critical')
        driving_duration = (self.events[-1]['timestamp'] - self.session_start) / 3600
        
        return {
            'driver_id': self.driver_id,
            'driving_duration_hours': driving_duration,
            'total_fatigue_events': total_events,
            'critical_events': critical_events,
            'compliant': driving_duration < 4 and critical_events == 0,
            'events': self.events,
        }


import time
if __name__ == "__main__":
    compliance = DigitalFatigueCompliance()
    compliance.start_session("driver_001")
    
    # 模拟3小时驾驶
    for hour in range(3):
        for minute in range(60):
            perclos = 5 + hour * 8 + minute * 0.1
            if perclos > 25:
                compliance.log_event('fatigue_warning', 'warning', perclos)
            if perclos > 35:
                compliance.log_event('fatigue_critical', 'critical', perclos)
    
    report = compliance.generate_compliance_report()
    print(f"驾驶员: {report['driver_id']}")
    print(f"驾驶时长: {report['driving_duration_hours']:.1f}h")
    print(f"疲劳事件: {report['total_fatigue_events']}")
    print(f"严重事件: {report['critical_events']}")
    print(f"合规: {'✅' if report['compliant'] else '❌'}")