import path from 'path'

export function buildStoredUploadPath(...segments: string[]) {
  return path.posix.join('uploads', ...segments.map((segment) => String(segment || '').replace(/\\/g, '/')))
}

export function getUploadRootDir(): string {
  const configuredUploadDir = String(process.env.UPLOAD_DIR || '').trim()
  if (!configuredUploadDir) {
    return path.join(process.cwd(), 'uploads')
  }

  return path.isAbsolute(configuredUploadDir)
    ? configuredUploadDir
    : path.resolve(process.cwd(), configuredUploadDir)
}

export function resolveStoredUploadPath(storedPath: string): string {
  const normalizedPath = String(storedPath || '').replace(/\\/g, '/')
  if (path.isAbsolute(normalizedPath)) {
    return normalizedPath
  }

  const relativeToUploadRoot = normalizedPath.replace(/^\.?\/*uploads\//i, '')
  return path.join(getUploadRootDir(), relativeToUploadRoot)
}