Download Media

import * as wmill from "windmill-client"

import { S3Object } from "windmill-client"

/**

 * Download Media

 * Download an uploaded or received media item to Windmill object storage and return its S3 reference.

 */

export async function main(

  auth: RT.WhatsappBusiness,

  media_id: string,

  destination: S3Object

) {

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

  const metaUrl = new URL(

    `https://graph.facebook.com/${apiVersion}/${media_id}`

  )

  metaUrl.searchParams.append("phone_number_id", auth.phone_number_id)

  const metaResponse = await fetch(metaUrl, {

    headers: {

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

      Accept: "application/json",

    },

  })

  if (!metaResponse.ok) {

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

  }

  const { url } = (await metaResponse.json()) as { url: string }

  const response = await fetch(url, {

    headers: {

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

    },

  })

  if (!response.ok) {

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

  }

  await wmill.writeS3File(

    destination,

    response.body as ReadableStream<Uint8Array>

  )

  return destination

}