opnform-host-nginx/client/lib/file-uploads.js

async function storeLocalFile(file) {
  let formData = new FormData()
  formData.append("file", file)
  const response = await opnFetch("/upload-file", {
    method: "POST",
    body: formData,
  })
  response.extension = file.name.split(".").pop()
  return response
}

export const storeFile = async (file, options = {}) => {
  if (useFeatureFlag('storage.local'))
    return storeLocalFile(file, options)

  const response = await opnFetch(
    options.signedStorageUrl || "vapor/signed-storage-url",
    {
      method: "POST",
      body: options.data,
      bucket: options.bucket || "",
      content_type: options.contentType || file.type,
      expires: options.expires || "",
      visibility: options.visibility || "",
      baseURL: options.baseURL || null,
      headers: options.headers || {},
      ...options.options,
    },
  )

  // Upload to S3
  await useFetch(response.url, {
    method: "PUT",
    body: file,
  })

  response.extension = file.name.split(".").pop()

  return response
}