#!/usr/bin/env python3
"""
self_todo_executor.py — TODO 自修复执行器（Linux/246 部署版）
=============================================================
每 10 分钟触发。轮询 health_todos.jsonl 中 pending 条目，执行修复，标记结果。

部署：Linux crontab: */10 * * * * cd /home/hmo/AgentsMeeting/gateway/scripts && /usr/bin/python3 self_todo_executor.py >> ../logs/todo_executor.log 2>&1
"""
import json, os, sys, subprocess
from datetime import datetime

try:
    sys.stdout.reconfigure(encoding="utf-8")
    sys.stderr.reconfigure(encoding="utf-8")
except Exception:
    pass

SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
GATEWAY_DIR = os.path.dirname(SCRIPT_DIR)
TEMP = os.path.join(GATEWAY_DIR, "temp")
LOGS = os.path.join(GATEWAY_DIR, "logs")
os.makedirs(LOGS, exist_ok=True)

TODO_FILE = os.path.join(TEMP, "health_todos.jsonl")
EXECUTOR_LOG = os.path.join(LOGS, "todo_executor.log")

# ── 服务修复命令映射（key = service name）─────────────────
FIX_MAP = {
    "dashboard":             ["sudo", "systemctl", "restart", "agentsmeeting-dashboard"],
    "hermes_gateway_mohe":   ["sudo", "systemctl", "restart", "hermes-gateway@mohe"],
    "hermes_gateway_zhiwei": ["sudo", "systemctl", "restart", "hermes-gateway@zhiwei"],
    "wechat_bridge":         None,  # 禁用自动重启: 重启=重登触发风控, 人工处理
    # 远程服务无本地修复命令
    "xmpp_bot_xxm":          None,
    "article_processor":     None,
}


def log(msg):
    ts = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
    line = f"{ts} [executor] {msg}"
    print(line, flush=True)
    with open(EXECUTOR_LOG, "a", encoding="utf-8") as f:
        f.write(line + "\n")


def read_pending_todos():
    todos = []
    if not os.path.exists(TODO_FILE):
        return todos
    try:
        with open(TODO_FILE, "r", encoding="utf-8") as f:
            for line in f:
                line = line.strip()
                if not line:
                    continue
                try:
                    entry = json.loads(line)
                    if entry.get("status") == "pending":
                        todos.append(entry)
                except json.JSONDecodeError:
                    continue
    except Exception as e:
        log(f"读取 TODO 失败: {e}")
    return todos


def mark_todo(entry, status, result=""):
    if not os.path.exists(TODO_FILE):
        return
    entry["status"] = status
    entry["resolved_at"] = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
    if result:
        entry["result"] = result

    lines = []
    try:
        with open(TODO_FILE, "r", encoding="utf-8") as f:
            for line in f:
                line = line.strip()
                if not line:
                    continue
                try:
                    existing = json.loads(line)
                    if (existing.get("created") == entry.get("created")
                            and existing.get("service") == entry.get("service")):
                        lines.append(json.dumps(entry, ensure_ascii=False))
                    else:
                        lines.append(line)
                except json.JSONDecodeError:
                    lines.append(line)
    except Exception as e:
        log(f"读取 TODO 文件失败: {e}")
        return

    try:
        with open(TODO_FILE, "w", encoding="utf-8") as f:
            f.write("\n".join(lines) + "\n")
    except Exception as e:
        log(f"写入 TODO 文件失败: {e}")


def execute_fix(service_name):
    """执行修复命令。返回 (success, detail)。"""
    cmd = FIX_MAP.get(service_name)
    if not cmd:
        return (False, "无本地修复命令（远程服务）")

    log(f"执行修复: {service_name} → {' '.join(cmd)}")
    try:
        r = subprocess.run(cmd, capture_output=True, text=True, timeout=30)
        if r.returncode == 0:
            return (True, "exit=0")
        else:
            detail = r.stderr[:200] if r.stderr else r.stdout[:200]
            return (False, f"exit={r.returncode}: {detail}")
    except subprocess.TimeoutExpired:
        return (False, "timeout (30s)")
    except Exception as e:
        return (False, str(e)[:100])


def main():
    log("=== TODO Executor 启动 ===")
    todos = read_pending_todos()
    log(f"待处理 TODO: {len(todos)} 条")

    for entry in todos:
        service = entry.get("service", "?")
        issue = entry.get("issue", "?")
        log(f"处理: {service} — {issue}")

        success, detail = execute_fix(service)
        if not success and "another instance" in detail.lower():
            mark_todo(entry, "completed", "already_running")
            log(f"  ✅ {service}: 已在运行")
        elif success:
            mark_todo(entry, "completed", detail)
            log(f"  ✅ {service}: 修复成功")
        else:
            mark_todo(entry, "failed", detail)
            log(f"  ❌ {service}: 修复失败 ({detail})")

    log(f"=== TODO Executor 完成 ({len(todos)} 条处理) ===")


if __name__ == "__main__":
    main()