Upload Files

First you need to use createFiles query to get the file url, and then you have to upload your file to that url.

GraphQL
JS Client

mutation {
  createFiles(input: [{contentType: "application/zip", extension: "zip"}]) {
    fields
    mediaDownloadUrl
    mediaId
    mediaUrl
    signedUrl
  }
}

To upload the files you need to put all the fields in the fields in addition to content type and file to the body of the post request. Here is a JavaScript example of how to do it.

const formData = new FormData()
const parsedFields = JSON.parse(signedUrl.fields)
// The order of appended key-value into the formData matters.
Object.entries(parsedFields).forEach(([key, value]) => {
  formData.append(key, String(value))
})
formData.append('Content-Type', file.type)
formData.append('file', file)

fetch(signedUrl.signedUrl, {
  method: 'POST',
  body: formData
})

Our javascript client have a function to automatically create and upload the files for you. It takes an extra File object as an argument.

client.media.uploadFiles([{
  contentType: "application/zip",
  extension: "zip",
  file: file
}])