#!/usr/bin/env python3
"""保活检测：检查 DB 中的价格是否新鲜，price_monitor 是否在运行"""
import sqlite3, subprocess, sys, os
from datetime import datetime

DB = '/home/hmo/web-dashboard/data/mofin.db'

def check():
    issues = []
    
    # 1. 检查 price_monitor 进程
    try:
        r = subprocess.run(['pgrep', '-f', 'price_monitor'], capture_output=True, text=True)
        if r.stdout.strip():
            print(f"  price_monitor: RUNNING (PID {r.stdout.strip()})")
        else:
            issues.append("price_monitor 未运行")
            print(f"  price_monitor: NOT RUNNING")
    except:
        pass
    
    # 2. 检查 DB 价格新鲜度
    try:
        db = sqlite3.connect(DB)
        db.row_factory = sqlite3.Row
        row = db.execute("SELECT updated_at FROM portfolio_summary WHERE id=1").fetchone()
        if row and row['updated_at']:
            try:
                dt = datetime.strptime(row['updated_at'], '%Y-%m-%d %H:%M')
                age = (datetime.now() - dt).total_seconds() / 60
                if age > 10:
                    issues.append(f"DB 价格 {age:.0f} 分钟未更新")
                print(f"  DB updated: {row['updated_at']} ({age:.0f} min ago)")
            except:
                pass
        else:
            issues.append("DB 无价格数据")
        db.close()
    except Exception as e:
        issues.append(f"DB 读取失败: {e}")
    
    # 3. 输出
    if issues:
        print(f"\n  ISSUES: {', '.join(issues)}")
        return 1
    print("  OK")
    return 0

if __name__ == '__main__':
    sys.exit(check())