export type GetApi10KbOverdueXmlOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

/**
 * Retrieve the overdue config as XML
 * 
 * GET /1.0/kb/overdue/xml
 * 
 * Also accepts auth: Killbill_Api_Key, Killbill_Api_Secret
 */
export const getApi10KbOverdueXml = async (options: GetApi10KbOverdueXmlOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "text/xml")

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/1.0/kb/overdue/xml${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return res.text()
};