Export Document

import * as wmill from "windmill-client"

import { S3Object } from "windmill-client"

const FORMATS = {

  pdf: "application/pdf",

  docx: "application/vnd.openxmlformats-officedocument.wordprocessingml.document",

  odt: "application/vnd.oasis.opendocument.text",

  rtf: "application/rtf",

  txt: "text/plain",

  md: "text/markdown",

  html_zip: "application/zip",

  epub: "application/epub+zip",

}

/**

 * Export Document

 * Export a Google Doc (all tabs) as PDF, Word (docx), OpenDocument, RTF, plain text, Markdown, zipped HTML or EPUB, save it to Windmill object storage and return its S3 reference. Without `destination`, a key is generated. Drive caps exports at 10 MB. Requires drive.readonly or drive on the connection (the documents scope can't download files).

 */

export async function main(

  auth: RT.Gdocs,

  document_id: string,

  format: "pdf" | "docx" | "odt" | "rtf" | "txt" | "md" | "html_zip" | "epub" = "pdf",

  destination: S3Object | undefined

) {

  const url = new URL(

    `https://www.googleapis.com/drive/v3/files/${document_id}/export`

  )

  url.searchParams.append("mimeType", FORMATS[format])

  const response = await fetch(url, {

    headers: { Authorization: `Bearer ${auth.token}` },

  })

  if (!response.ok) {

    throw new Error(`${response.status} ${await response.text()}`)

  }

  return await wmill.writeS3File(

    destination || undefined,

    await response.blob(),

    undefined,

    FORMATS[format]

  )

}