import {z} from 'zod'

export type GetApiLookupMeFieldArgs = {field: 'ip' | 'hostname' | 'geo' | 'geo/city' | 'geo/region' | 'geo/region_code' | 'geo/country' | 'geo/country_code' | 'geo/continent' | 'geo/continent_code' | 'geo/latitude' | 'geo/longitude' | 'geo/timezone' | 'geo/postal_code' | 'geo/dma_code' | 'geo/geoname_id' | 'geo/radius' | 'geo/last_changed' | 'as' | 'as/asn' | 'as/name' | 'as/domain' | 'as/type' | 'as/last_changed' | 'mobile' | 'mobile/name' | 'mobile/mcc' | 'mobile/mnc' | 'anonymous' | 'anonymous/name' | 'anonymous/last_seen' | 'anonymous/percent_days_seen' | 'anonymous/is_proxy' | 'anonymous/is_relay' | 'anonymous/is_tor' | 'anonymous/is_vpn' | 'anonymous/is_res_proxy' | 'is_anonymous' | 'is_anycast' | 'is_hosting' | 'is_mobile' | 'is_satellite'};

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

export const getApiLookupMeFieldResponse = z.object({});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

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

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/lookup/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 validateResponse(getApiLookupMeFieldResponse, await res.json())
};