import * as fsp from 'node:fs/promises'

export async function fileExists(path: string): Promise<boolean> {
  try {
    const stat = await fsp.stat(path)
    return stat.isFile()
  } catch {
    return false
  }
}

export async function directoryExists(path: string): Promise<boolean> {
  try {
    const stat = await fsp.stat(path)
    return stat.isDirectory()
  } catch {
    return false
  }
}

export function sanitizeFilename(filename: string) {
  return filename.replace(/[/\\?%*:|"<>]/g, '_')
}

export async function writeWebStreamToFile(stream: ReadableStream<unknown>, path: string) {
  const fd = await fsp.open(path, 'w+')
  const writer = fd.createWriteStream()

  for await (const chunk of stream as any) {
    writer.write(chunk)
  }

  writer.end()

  await new Promise<void>((resolve, reject) => {
    writer.on('error', reject)
    writer.on('finish', resolve)
  })
}