#!/usr/bin/env python3
"""fix_gateway_port.py — 自愈系统调用的网关/XMPP Bot修复脚本
v2: 新增 session 健康检查，检测卡死的 session 自动重启
"""
import subprocess, sys, time, socket, json, urllib.request

GATEWAY_PORT = 8643
BOT_PORT = 5805
BOT_SCRIPT = "/home/hmo/xmpp_zhiwei_bot.py"
API_KEY = "hermes123"
SESSION_ID = "xmpp-zhiwei"
GATEWAY_URL = f"http://127.0.0.1:{GATEWAY_PORT}/v1/chat/completions"

def port_open(port, host="127.0.0.1"):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(2)
    try:
        r = s.connect_ex((host, port))
        return r == 0
    finally:
        s.close()

def check_session_health():
    """检测 gateway LLM 是否可用——扫 agent.log 最近一次真实调用结果。
    不再发真实 LLM ping（25s 超时对 20-100s 的冷启动延迟必误报，且每次白烧 22k token）。
    """
    try:
        sys.path.insert(0, '/home/hmo/MoFin')
        from xmpp_logger import _scan_agent_log
        r = _scan_agent_log(time.time(), "zhiwei")
        if r["status"] == "ok":
            print(f"Session {SESSION_ID} 健康 ✓ (agent.log: latency={r.get('latency')}, {r.get('age_sec')}s前)")
            return True
        # error/unknown：只有近期有明确失败记录才判不健康
        if r["status"] == "error":
            print(f"Session {SESSION_ID} 不健康: agent.log 最近调用失败 — {r.get('error','')[:100]}", file=sys.stderr)
            return False
        # unknown（无近期调用记录）= 空闲，不算不健康
        print(f"Session {SESSION_ID} 无近期调用记录（空闲正常）")
        return True
    except Exception as e:
        print(f"Session {SESSION_ID} 健康检查异常: {e}（按健康处理）", file=sys.stderr)
        return True

def restart_gateway():
    """通过systemd重启gateway"""
    print(f"Gateway 端口{GATEWAY_PORT} 异常 → 重启中...")
    subprocess.run(["sudo", "systemctl", "restart", "hermes-gateway-zhiwei.service"],
                   timeout=30, capture_output=True)
    time.sleep(5)
    if port_open(GATEWAY_PORT):
        print(f"Gateway 已恢复 ✓")
        return True
    else:
        print(f"Gateway 重启后仍不可达", file=sys.stderr)
        return False

target = sys.argv[1] if len(sys.argv) > 1 else "all"

if target in ("all", "bot", "xmpp_bot"):
    if not port_open(BOT_PORT):
        print(f"XMPP bot port {BOT_PORT} CLOSED → 启动")
        subprocess.run(["pkill", "-f", "xmpp_zhiwei_bot.py"], timeout=5, capture_output=True)
        time.sleep(1)
        subprocess.Popen(["python3", BOT_SCRIPT], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        time.sleep(5)
        if port_open(BOT_PORT):
            print(f"XMPP bot 端口{BOT_PORT} 已打开 ✓")
        else:
            print(f"XMPP bot 修复后仍不可达", file=sys.stderr)
            sys.exit(1)
    else:
        print(f"XMPP bot 端口{BOT_PORT} 正常 ✓")

if target in ("all", "gateway", "session"):
    if not port_open(GATEWAY_PORT):
        restart_gateway()
    elif target in ("all", "gateway") or target == "session":
        # 端口通了 → 进一步检查session健康
        if not check_session_health():
            print(f"Session {SESSION_ID} 不健康 → 重启gateway")
            restart_gateway()
        else:
            print(f"Gateway 端口{GATEWAY_PORT} 正常 ✓")

if target in ("all", "session"):
    # 仅session检查
    if port_open(GATEWAY_PORT):
        if not check_session_health():
            print(f"Session {SESSION_ID} 不健康 → 重启gateway")
            restart_gateway()

sys.exit(0)