export type GetApiUsernameFeedsFeedKeyDataRetainArgs = {username: string, feed_key: string};

export type GetApiUsernameFeedsFeedKeyDataRetainOptions = {baseUrl?: string | undefined, HeaderKey?: string | undefined, fetch?: typeof fetch | undefined};

/**
 * Last Data in MQTT CSV format
 * 
 * GET /{username}/feeds/{feed_key}/data/retain
 * 
 * Also accepts auth: HeaderSignature, QueryKey
 */
export const getApiUsernameFeedsFeedKeyDataRetain = async (args: GetApiUsernameFeedsFeedKeyDataRetainArgs, options?: GetApiUsernameFeedsFeedKeyDataRetainOptions) => {
const {baseUrl = "https://io.adafruit.com/api/v2", fetch: fetchFn = fetch, HeaderKey} = options ?? {}

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

if (HeaderKey !== undefined) headers.set("X-AIO-Key", HeaderKey)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.username))}/feeds/${encodeURIComponent(String(args.feed_key))}/data/retain${query.size > 0 ? `?${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()
};