#!/usr/bin/env python
# coding=utf-8

"""
@author: CNWei,ChenWei
@Software: PyCharm
@contact: t6g888@163.com,chenwei@zygj.com
@file: test
@date: 2026/1/12 10:21
@desc: 
"""
import functools
import logging
import signal
import subprocess
import time
import os
import sys
import http.client
import socket
import json
from enum import Enum

from core.settings import BASE_DIR, APPIUM_HOST, APPIUM_PORT

logger = logging.getLogger(__name__)


# 使用 npm run 确保 APPIUM_HOME=. 变量和本地版本生效
# NODE_CMD = f"npm run appium -- -p {APPIUM_PORT}"


class AppiumStatus(Enum):
    """Appium 服务状态枚举"""
    READY = "服务已启动"  # 服务和驱动都加载完成 (HTTP 200 + ready: true)
    INITIALIZING = "驱动正在加载"  # 服务已响应但驱动仍在加载 (HTTP 200 + ready: false)
    CONFLICT = "端口被其他程序占用"  # 端口被其他非 Appium 程序占用
    OFFLINE = "服务未启动"  # 服务未启动
    ERROR = "内部错误"
    UNKNOWN = "未知状态"


class ServiceRole(Enum):
    """服务角色枚举：明确权责"""
    MANAGED = "由脚本启动 (受控模式)"  # 需要负责清理
    EXTERNAL = "复用外部服务 (共享模式)"  # 不负责清理
    NULL = "无效服务 (空模式)"  # 占位或失败状态


def get_appium_command():
    """精确定位 Appium 执行文件，避免 npm 包装层"""
    bin_name = "appium.cmd" if sys.platform == "win32" else "appium"
    appium_bin = BASE_DIR / "node_modules" / ".bin" / bin_name

    if not appium_bin.exists():
        # 报错提示：找不到本地 Appium，引导用户安装
        logger.info(f"\n错误: 在路径 {appium_bin} 未找到 Appium 执行文件。")
        logger.info("请确保已在项目目录下执行过: npm install appium")
        sys.exit(1)
    # 返回执行列表（用于 shell=False）
    return [str(appium_bin), "-p", str(APPIUM_PORT)]


# 在全局或 start_appium_service 中获取命令
APP_CMD_LIST = get_appium_command()


def _cleanup_process_tree(process: subprocess.Popen = None):
    """核心清理逻辑：针对方案一的跨平台递归关闭"""
    if not process or process.poll() is not None:
        return
    logger.info(f"正在关闭 Appium 进程树 (PID: {process.pid})...")
    try:
        if sys.platform == "win32":
            # Windows 下使用 taskkill 强制关闭进程树 /T
            subprocess.run(['taskkill', '/F', '/T', '/PID', str(process.pid)],
                           stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        else:
            # Unix/Mac: 获取进程组 ID 并发送终止信号
            pgid = os.getpgid(process.pid)
            os.killpg(pgid, signal.SIGTERM)

        process.wait(timeout=5)
        logger.info("所有相关进程已安全退出。")
    except Exception as e:
        logger.error(f"关闭进程时遇到意外: {e}")
        try:
            process.kill()
        except Exception as e:
            logger.warning(f"强制关闭: {e}")
            # 这里通常保持安静，因为我们已经尝试过清理了
    logger.info("服务已完全清理。")


class AppiumService:
    """Appium 服务上下文容器"""

    def __init__(self, role: ServiceRole, process: subprocess.Popen = None):
        self.role = role
        self.process = process

    def stop(self):
        """统一停止接口：根据角色决定是否关闭进程"""
        match self.role:
            case ServiceRole.EXTERNAL:
                logger.info(f"--> [角色: {self.role.value}] 脚本退出，保留原服务运行。")
                return
            case ServiceRole.MANAGED:
                _cleanup_process_tree(self.process)
            case ServiceRole.NULL:
                logger.info(f"--> [角色: {self.role.value}] 无需清理。")

    def __repr__(self):
        return f"<AppiumService 角色='{self.role.value}' 端口={APPIUM_PORT}>"


def get_appium_status() -> AppiumStatus:
    """深度探测 Appium 状态"""
    conn = None
    try:
        # 1. 端口开启，尝试获取 Appium 状态接口
        conn = http.client.HTTPConnection(APPIUM_HOST, APPIUM_PORT, timeout=2)
        conn.request("GET", "/status")
        response = conn.getresponse()

        if response.status != 200:
            return AppiumStatus.CONFLICT

        data = json.loads(response.read().decode())

        # 2. 解析 Appium 3.x 标准响应结构
        # 即使服务响应了，也要看驱动是否加载完成 (ready 字段)
        is_ready = data.get("value", {}).get("ready")
        return AppiumStatus.READY if is_ready else AppiumStatus.INITIALIZING

    except (socket.error, ConnectionRefusedError):
        # 3. 如果通信拒绝，检查端口是否真的空闲
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
            try:
                s.settimeout(1)
                s.bind((APPIUM_HOST, APPIUM_PORT))
                return AppiumStatus.OFFLINE  # 真正未启动
            except OSError:
                return AppiumStatus.CONFLICT  # 端口被占用但没响应 HTTP
    except (http.client.HTTPException, json.JSONDecodeError):
        return AppiumStatus.UNKNOWN
    except Exception as e:
        logger.error(e)
        return AppiumStatus.ERROR
    finally:
        if conn: conn.close()


def start_appium_service() -> AppiumService:
    """管理 Appium 服务的生命周期"""
    process = None  # 1. 预先初始化变量，防止作用域错误
    managed = False
    # 轮询等待真正就绪
    max_retries = 40

    for i in range(max_retries):
        status = get_appium_status()
        match status:  # Python 3.10+ 的模式匹配
            case AppiumStatus.READY:
                if managed:
                    # 安全打印 PID
                    pid_str = f"PID: {process.pid}" if process else "EXTERNAL"
                    logger.info(f"Appium 已经完全就绪! ({pid_str})")
                    return AppiumService(ServiceRole.MANAGED, process)
                else:
                    logger.info(f"--> [复用] 有效的 Appium 服务已在运行 (Port: {APPIUM_PORT})")
                    logger.info("--> [注意] 脚本退出时将保留该服务，不会将其关闭。")
                    return AppiumService(ServiceRole.EXTERNAL, process)
            case AppiumStatus.CONFLICT:
                logger.warning(f"\n[!] 错误: 端口 {APPIUM_PORT} 被非 Appium 程序占用。")
                logger.info("=" * 60)
                logger.info("请手动执行以下命令释放端口后重试：")
                if sys.platform == "win32":
                    logger.info(
                        f"  CMD: for /f \"tokens=5\" %a in ('netstat -aon ^| findstr :{APPIUM_PORT}') do taskkill /F /PID %a")
                else:
                    logger.info(f"  Terminal: lsof -ti:{APPIUM_PORT} | xargs kill -9")
                logger.info("=" * 60)
                sys.exit(1)
            case AppiumStatus.OFFLINE:

                if not managed:
                    logger.info("Appium 服务未启动...")
                    logger.info(f"正在准备启动本地 Appium 服务 (Port: {APPIUM_PORT})...")

                    # 注入环境变量，确保 Appium 寻找项目本地的驱动
                    env_vars = os.environ.copy()
                    env_vars["APPIUM_HOME"] = str(BASE_DIR)

                    try:
                        process = subprocess.Popen(
                            APP_CMD_LIST,
                            stdout=subprocess.DEVNULL,
                            stderr=subprocess.DEVNULL,
                            env=env_vars,
                            cwd=BASE_DIR,
                            # Windows 和 Linux/Mac 的处理方式不同
                            creationflags=subprocess.CREATE_NEW_PROCESS_GROUP if sys.platform == "win32" else 0,
                            preexec_fn=os.setsid if sys.platform != "win32" else None
                        )
                        managed = True
                    except Exception as e:
                        logger.error(f"启动过程发生异常: {e}")
                        sys.exit(1)
                else:
                    if process and process.poll() is not None:
                        logger.warning("Appium 进程启动后异常退出。")
                        sys.exit(1)
            case AppiumStatus.INITIALIZING:
                if managed and process and process.poll() is not None:
                    logger.warning("Appium 驱动加载期间进程崩溃。")
                    _cleanup_process_tree(process)
                    sys.exit(1)
                if i % 4 == 0:  # 每 2 秒提醒一次，避免刷屏
                    logger.info("Appium 正在加载驱动/插件，请稍候...")
            case AppiumStatus.ERROR:
                logger.error("探测接口发生内部错误（可能是解析失败或严重网络异常），脚本终止。")
                if managed and process:
                    _cleanup_process_tree(process)
                sys.exit(1)
            case _:
                logger.error("Appium 启动异常")
                sys.exit(1)

        time.sleep(0.5)

    logger.warning("启动超时：Appium 在规定时间内未完成初始化。")
    _cleanup_process_tree(process)
    sys.exit(1)


def stop_appium_service(server: AppiumService):
    # """安全关闭服务"""
    server.stop()


# --- 装饰器实现 ---
def with_appium(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        service = start_appium_service()
        try:
            # return func(service, *args, **kwargs)
            return func(*args, **kwargs)
        finally:
            service.stop()

    return wrapper


if __name__ == "__main__":
    # 使用示例：作为一个上下文管理器或简单的生命周期示例
    appium_proc = None
    try:
        appium_proc = start_appium_service()
        print(f"\n[项目路径] {BASE_DIR}")
        print("\n[提示] 现在可以手动或通过其他脚本运行测试用例。")
        print("[提示] 按下 Ctrl+C 可停止由本脚本启动的服务。")

        # 保持运行，直到手动停止（在实际测试框架中，这里会被替换为测试执行逻辑）
        while True:
            time.sleep(1)

    except KeyboardInterrupt:
        pass
    finally:
        stop_appium_service(appium_proc)