Retrieves invoices or purchase bills as PDF files

//native

type Xero = {

  token: string;

};

/**

 * Retrieves invoices or purchase bills as PDF files

 *

 */

export async function main(

  auth: Xero,

  InvoiceID: string,

  xero_tenant_id: string,

) {

  const url = new URL(

    `https://api.xero.com/api.xro/2.0/Invoices/${InvoiceID}/pdf`,

  );

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Accept: 'application/json',

      "xero-tenant-id": xero_tenant_id,

      Authorization: "Bearer " + auth.token,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.text();

}