Upload Media

import * as wmill from "windmill-client"

import { S3Object } from "windmill-client"

/**

 * Upload Media

 * Upload a file from Windmill object storage to WhatsApp and return a media ID to use in media messages. Media is kept for 30 days.

 */

export async function main(

  auth: RT.WhatsappBusiness,

  file: S3Object,

  mime_type: string,

  file_name: string | undefined

) {

  const bytes = await wmill.loadS3File(file)

  if (!bytes) {

    throw new Error("Could not load the file from object storage")

  }

  const name =

    file_name !== undefined && file_name !== ""

      ? file_name

      : (file.s3.split("/").pop() ?? "file")

  const form = new FormData()

  form.append("messaging_product", "whatsapp")

  form.append("type", mime_type)

  form.append("file", new Blob([bytes], { type: mime_type }), name)

  const apiVersion = auth.api_version || "v25.0"

  const response = await fetch(

    `https://graph.facebook.com/${apiVersion}/${auth.phone_number_id}/media`,

    {

      method: "POST",

      headers: {

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

        Accept: "application/json",

      },

      body: form,

    }

  )

  if (!response.ok) {

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

  }

  return await response.json()

}