export type GetApiApiCalendarCountriesArgs = {api_key: string, format?: ('json' | 'xml') | undefined, callback?: string | undefined};

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

/**
 * Countries (with subdivision codes) supported by /api/calendar/holidays and /api/calendar/business-day, plus the currencies that have a settlement calendar for /api/calendar/value-date. Available on the FREE tier.
 * 
 * GET /api/calendar/countries
 */
export const getApiApiCalendarCountries = async (args: GetApiApiCalendarCountriesArgs, options: GetApiApiCalendarCountriesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "countries")

if (args.api_key != null) query.append("api_key", String(args.api_key))
if (args.format != null) query.append("format", String(args.format))
if (args.callback != null) query.append("callback", String(args.callback))

const url = `${baseUrl.replace(/\/+$/, '')}/api/calendar/countries${query.size > 0 ? `?${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.blob()
};