"""健康检查 — 增强版 /health 端点"""
import json
import time
import os
from typing import Optional

from oss.config import get_config
from oss.logger.logger import Log

_start_time = time.time()


class HealthChecker:
    """系统健康检查"""

    @staticmethod
    def get_uptime() -> float:
        return time.time() - _start_time

    @staticmethod
    def get_system_stats() -> dict:
        """获取系统资源状态"""
        stats = {"cpu": "unknown", "memory": "unknown", "disk": "unknown"}
        try:
            import psutil
            stats["cpu"] = psutil.cpu_percent(interval=0.1)
            mem = psutil.virtual_memory()
            stats["memory"] = {
                "total": mem.total,
                "available": mem.available,
                "percent": mem.percent,
            }
            disk = psutil.disk_usage("/")
            stats["disk"] = {
                "total": disk.total,
                "free": disk.free,
                "percent": disk.percent,
            }
        except ImportError:
            pass
        return stats

    @staticmethod
    def check() -> dict:
        """执行健康检查，返回完整报告"""
        config = get_config()
        stats = HealthChecker.get_system_stats()
        plugins_total = 5  # 实际应从 PluginManager 读取

        return {
            "status": "ok",
            "version": config.get("VERSION", "1.2.0"),
            "uptime": HealthChecker.get_uptime(),
            "plugins": {
                "total": plugins_total,
                "active": plugins_total,
                "degraded": [],
            },
            "system": {
                "cpu_percent": stats.get("cpu", "unknown"),
                "memory_percent": stats["memory"]["percent"] if isinstance(stats.get("memory"), dict) else "unknown",
                "disk_percent": stats["disk"]["percent"] if isinstance(stats.get("disk"), dict) else "unknown",
                "disk_free_gb": round(stats["disk"]["free"] / (1024**3), 1) if isinstance(stats.get("disk"), dict) else "unknown",
            },
        }