"""指令参数解析与展示表（纯函数、无副作用，可单测）。"""

from dataclasses import dataclass

# 游戏代号 -> 中文展示名（回复文案用）
BF_GAME_NAMES = {
    "bf3": "战地3",
    "bf4": "战地4",
    "bf1": "战地1",
    "bfv": "战地5",
    "bf2042": "战地2042",
    "bf6": "战地6",
}

# BF2042 取数失败原因 -> 给用户看的话（detail 只写日志不刷屏）
BF2042_ERROR_HINT = {
    "not_found": "未找到该玩家，请检查 EAID 拼写是否正确",
    "ext_offline": "查询服务未就绪（取数浏览器未连接），请联系管理员",
    "timeout": "访问 tracker.gg 超时，请稍后再试",
    "auth": "查询服务登录态异常，请联系管理员",
    "error": "tracker.gg 取数失败，请稍后再试",
}

# 子命令关键词 -> (视图, 榜单类型)。不打关键词就是生涯卡
_BF2042_VIEWS = {
    "武器": ("list", "weapon"),
    "枪械": ("list", "weapon"),
    "weapon": ("list", "weapon"),
    "weapons": ("list", "weapon"),
    "载具": ("list", "vehicle"),
    "vehicle": ("list", "vehicle"),
    "vehicles": ("list", "vehicle"),
    "装备": ("list", "gadget"),
    "道具": ("list", "gadget"),
    "gadget": ("list", "gadget"),
    "gadgets": ("list", "gadget"),
    "模式": ("gamemode", ""),
    "gamemode": ("gamemode", ""),
}


@dataclass(frozen=True)
class Bf2042Target:
    """BF2042 指令解析结果。

    view: career（生涯卡）/ list（榜单卡）/ gamemode（模式明细）
    kind: 榜单类型 weapon/vehicle/gadget，仅 view=list 时非空
    player: 玩家名；空串 = 未指定，用绑定记录
    """

    view: str = "career"
    kind: str = ""
    player: str = ""


def parse_bf2042_args(input_text: str) -> Bf2042Target:
    """拆出 BF2042 子命令关键词,返回目标。

    首个词不是关键词时整串都当玩家名(生涯卡),所以玩家名里有空格也不受影响。
    """
    text = (input_text or "").strip()
    if not text:
        return Bf2042Target()
    head, _, rest = text.partition(" ")
    view = _BF2042_VIEWS.get(head.lower())
    if view is None:
        return Bf2042Target(view="career", kind="", player=text)
    return Bf2042Target(view=view[0], kind=view[1], player=rest.strip())