from __future__ import annotations

from typing import Any


MENU_FIELDS = (
    "parentId",
    "name",
    "type",
    "path",
    "componentKey",
    "permissionCode",
    "icon",
    "sortOrder",
    "isVisible",
    "isActive",
)


def _clean_optional(value: Any) -> Any:
    if isinstance(value, str):
        return value.strip() or None
    return value


def normalize_menu_values(values: dict[str, Any], *, partial: bool = False) -> dict[str, Any]:
    """Normalize menu form values and enforce type-specific fields."""
    normalized = dict(values)
    for field in ("parentId", "name", "path", "componentKey", "permissionCode", "icon"):
        if field in normalized:
            normalized[field] = _clean_optional(normalized[field])

    if "name" in normalized and not normalized["name"]:
        raise ValueError("菜单名称不能为空")

    if partial or "type" not in normalized:
        return normalized

    menu_type = normalized["type"]
    if menu_type == "button":
        if not normalized.get("permissionCode"):
            raise ValueError("按钮菜单必须填写权限标识")
        if normalized.get("path") or normalized.get("componentKey"):
            raise ValueError("按钮菜单不能填写路由地址或组件路径")
        normalized["icon"] = None
    else:
        if not normalized.get("path"):
            raise ValueError("目录或页面必须填写路由地址")
        if menu_type == "page" and not normalized.get("componentKey"):
            raise ValueError("页面菜单必须填写组件路径")
        if menu_type == "directory":
            normalized["permissionCode"] = None

    return normalized