import type { PermissionCode } from '@lingxi/shared';

import { useAuthStore } from '@/stores/auth-store';

/** 纯函数：权限点判断（便于单测与在非组件上下文复用） */
export function can(
  permissions: readonly string[],
  permission: PermissionCode | readonly PermissionCode[],
  mode: 'all' | 'any' = 'all',
): boolean {
  const required = typeof permission === 'string' ? [permission] : permission;
  if (required.length === 0) {
    return true;
  }
  return mode === 'all'
    ? required.every((code) => permissions.includes(code))
    : required.some((code) => permissions.includes(code));
}

/** 当前登录用户的权限点集合（/me 或登录响应写入 auth store） */
export function usePermissions(): readonly string[] {
  return useAuthStore((state) => state.permissions);
}

/** 单个（或一组）权限点判断；`mode='all'` 要求全部命中 */
export function usePermission(
  permission: PermissionCode | readonly PermissionCode[],
  mode: 'all' | 'any' = 'all',
): boolean {
  const permissions = usePermissions();
  return can(permissions, permission, mode);
}