export type GetApiLiteMeFieldArgs = {field: 'ip' | 'asn' | 'as_name' | 'as_domain' | 'country_code' | 'country' | 'continent_code' | 'continent'};

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

/**
 * Returns a specific field from lightweight IP information about the current IP.
 * 
 * GET /lite/me/{field}
 * 
 * Also accepts auth: BearerAuth, ApiKeyAuth
 */
export const getApiLiteMeField = async (args: GetApiLiteMeFieldArgs, options?: GetApiLiteMeFieldOptions) => {
const {baseUrl = "https://api.ipinfo.io", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/lite/me/${encodeURIComponent(String(args.field))}${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()
};