export type HeadApiProvidersArgs = {subject?: string | undefined};

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

/**
 * Check providers availability.
 * 
 * HEAD /providers
 */
export const headApiProviders = async (args: HeadApiProvidersArgs, options: HeadApiProvidersOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()

if (args.subject != null) query.append("subject", String(args.subject))

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

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

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

return undefined
};