"""跨模块共享工具（web 层）。"""
from core import device_pool
from core.adb_helper import _adb
from core.logger import get_logger

_log = get_logger("web")


def _merged_device_list():
    """本地 adb（含 USB）+ 设备池的合并列表（[{serial, state}]）。

    供维护终端/剪贴板注入/应用版本管理等设备选择场景共用。
    状态：device/offline=本机 adb 实际状态；pool=设备池已配置但本机未连接。
    """
    states = {}
    out = _adb("devices")
    for line in (out or "").splitlines()[1:]:
        parts = line.split()
        if len(parts) >= 2 and parts[0] and not parts[0].startswith("*"):
            states[parts[0]] = parts[1]
    try:
        for serial in device_pool.list_configured():
            if serial not in states:
                states[serial] = "pool"
    except Exception:
        pass
    return [{"serial": s, "state": st} for s, st in sorted(states.items())]


def _device_screen_state(serial):
    """设备屏幕状态：on/off/unknown（dumpsys power 只读查询）。

    用 mWakefulness 判断（Asleep=熄屏）：MIUI 的 dumpsys display 没有
    mScreenState 字段，power 字段全机型存在。USB 设备查询失败返回 unknown。
    """
    try:
        if ":" not in serial:
            return "unknown"
        out = _adb("-s", serial, "shell", "dumpsys", "power") or ""
        import re
        m = re.search(r"mWakefulness=(\w+)", out)
        if m:
            return "off" if m.group(1).lower() == "asleep" else "on"
    except Exception:
        pass
    return "unknown"