// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========

export const FORMAT_VERSION = 2

export const BLOB_REF_KEY = '__file'

export function isSafeBlobPath(path: unknown): path is string {
  if (typeof path !== 'string' || path === '') return false
  if (path.startsWith('/')) return false
  if (path.includes('\0')) return false
  return !path.split('/').includes('..')
}

export function normMountPrefix(prefix: string): string {
  const s = prefix.replace(/^\/+|\/+$/g, '')
  return s === '' ? '/' : '/' + s + '/'
}
