"""数据目录、profile 路径、CLI 路径调试输出。"""
import os
import re
import sys
from typing import Optional

from util.constants import SKILL_SLUG
from util.platforms import _PLATFORM_PRIMARY_CN


def get_data_root():
    env = (os.getenv("JIANGCHANG_DATA_ROOT") or "").strip()
    if env:
        return env
    if sys.platform == "win32":
        return r"D:\jiangchang-data"
    return os.path.join(os.path.expanduser("~"), ".jiangchang-data")


def get_user_id():
    uid = (os.getenv("JIANGCHANG_USER_ID") or "").strip()
    return uid or "_anon"


def get_skill_data_dir():
    path = os.path.join(get_data_root(), get_user_id(), SKILL_SLUG)
    os.makedirs(path, exist_ok=True)
    return path


def get_skill_logs_dir() -> str:
    """{DATA_ROOT}/{USER_ID}/account-manager/logs/"""
    path = os.path.join(get_skill_data_dir(), "logs")
    os.makedirs(path, exist_ok=True)
    return path


def get_db_path():
    return os.path.join(get_skill_data_dir(), "account-manager.db")


def _runtime_paths_debug_text():
    """供排查「为何 list 没数据」：终端未注入环境变量时会落到 _anon 等默认目录，与网关里用的库不是同一个文件。"""
    env_root = (os.getenv("JIANGCHANG_DATA_ROOT") or "").strip() or "(未设置)"
    env_uid = (os.getenv("JIANGCHANG_USER_ID") or "").strip() or "(未设置→使用 _anon)"
    return (
        "[account-manager] "
        f"JIANGCHANG_DATA_ROOT={env_root} | "
        f"JIANGCHANG_USER_ID={env_uid} | "
        f"实际数据根={get_data_root()} | "
        f"实际用户目录={get_user_id()} | "
        f"数据库文件={get_db_path()}"
    )


def _maybe_print_paths_debug_cli():
    """设置 JIANGCHANG_ACCOUNT_DEBUG_PATHS=1 时，每次执行子命令前在 stderr 打印路径。"""
    v = (os.getenv("JIANGCHANG_ACCOUNT_DEBUG_PATHS") or "").strip().lower()
    if v in ("1", "true", "yes", "on"):
        print(_runtime_paths_debug_text(), file=sys.stderr)


_WIN_FS_FORBIDDEN = re.compile(r'[<>:"/\\|?*\x00-\x1f]')
_WIN_RESERVED_NAMES = frozenset(
    ["CON", "PRN", "AUX", "NUL"]
    + [f"COM{i}" for i in range(1, 10)]
    + [f"LPT{i}" for i in range(1, 10)]
)


def _fs_safe_segment(name: str, fallback: str) -> str:
    """单级目录名：去掉 Windows 非法字符，避免末尾点/空格；空则用 fallback。"""
    t = _WIN_FS_FORBIDDEN.sub("_", (name or "").strip())
    t = t.rstrip(" .")
    if not t:
        t = fallback
    if t.upper() in _WIN_RESERVED_NAMES:
        t = f"_{t}"
    return t


def get_default_profile_dir(
    platform_key: str, phone: Optional[str], account_id: Optional[int] = None
) -> str:
    """
    默认可读路径：profiles/<平台展示名>/<手机号>/（便于在资源管理器中辨认）。
    无手机号时退化为 profiles/<平台展示名>/no_phone_<id>/。
    """
    label = _PLATFORM_PRIMARY_CN.get(platform_key, platform_key or "account")
    label_seg = _fs_safe_segment(label, _fs_safe_segment(platform_key or "", "platform"))
    ph = (phone or "").strip()
    if ph:
        phone_seg = _fs_safe_segment(ph, f"id_{account_id}" if account_id is not None else "phone")
    else:
        phone_seg = _fs_safe_segment(
            "", f"no_phone_{account_id}" if account_id is not None else "no_phone"
        )
    path = os.path.join(get_skill_data_dir(), "profiles", label_seg, phone_seg)
    os.makedirs(path, exist_ok=True)
    return path