import {z} from 'zod'

export type GetApiUserAgentV1Args = {ua?: string | undefined, response_fields?: string | undefined, response_fields_omit?: string | undefined, pretty?: boolean | undefined};

export type GetApiUserAgentV1Options = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const versionBlock = z.object({full: z.string().nullable().optional(), major: z.number().int().nullable().optional()}).nullable();

export const userAgentImage = z.object({url_svg: z.string().nullable().optional()}).nullable();

export const userAgentLinks = z.object({wikipedia: z.string().nullable().optional(), official: z.string().nullable().optional()}).nullable();

export const userAgentMaker = z.object({name: z.string().nullable().optional(), logo: userAgentImage.optional(), wordmark: userAgentImage.optional(), links: userAgentLinks.optional()}).nullable();

export const userAgentEngine = z.object({label: z.string().nullable().optional(), name: z.string().nullable().optional(), version: versionBlock.optional(), logo: userAgentImage.optional(), wordmark: userAgentImage.optional(), maker: userAgentMaker.optional()}).nullable();

export const userAgentOperator = z.object({name: z.string().nullable().optional(), name_legal: z.string().nullable().optional(), email_address: z.string().nullable().optional(), logo: userAgentImage.optional(), wordmark: userAgentImage.optional(), links: z.object({info: z.string().nullable().optional(), wikipedia: z.string().nullable().optional()}).nullable().optional()}).nullable();

export const userAgentOS = z.object({label: z.string().nullable().optional(), name: z.string().nullable().optional(), version: versionBlock.optional(), logo: userAgentImage.optional(), wordmark: userAgentImage.optional(), maker: userAgentMaker.optional()}).nullable();

export const userAgentRecord = z.object({ua: z.string().optional(), label: z.string().nullable().optional(), client: z.object({label: z.string().nullable().optional(), name: z.string().nullable().optional(), type: z.enum(["browser", "cli", "crawler", "desktop_app", "email", "fetcher", "library", "media_player", "mobile_app", "null"]).nullable().optional(), version: versionBlock.optional(), logo: userAgentImage.optional(), wordmark: userAgentImage.optional(), maker: userAgentMaker.optional(), engine: userAgentEngine.optional(), attributes: z.object({is_android: z.boolean().optional(), is_chrome: z.boolean().optional(), is_chromium: z.boolean().optional(), is_chromium_based: z.boolean().optional(), is_edge: z.boolean().optional(), is_safari: z.boolean().optional(), is_firefox: z.boolean().optional(), is_headless: z.boolean().optional(), is_internet_explorer: z.boolean().optional(), is_opera: z.boolean().optional(), is_web_view: z.boolean().optional()}).optional()}).optional(), operator: userAgentOperator.optional(), os: userAgentOS.optional(), device: z.object({label: z.string().nullable().optional(), name: z.string().nullable().optional(), type: z.enum(["appliance", "augmented_reality", "camera", "car", "cloud", "desktop", "e_reader", "game_console", "handheld", "media_player", "phone", "set_top_box", "smart_display", "smart_tv", "tablet", "virtual_reality", "voice", "watch", "null"]).nullable().optional(), maker: userAgentMaker.optional(), attributes: z.object({is_camera: z.boolean().optional(), is_desktop: z.boolean().optional(), is_media_player: z.boolean().optional(), is_mobile: z.boolean().optional(), is_phone: z.boolean().optional(), is_set_top_box: z.boolean().optional(), is_smart_tv: z.boolean().optional(), is_tablet: z.boolean().optional(), is_watch: z.boolean().optional(), is_wearable: z.boolean().optional()}).optional()}).optional(), flags: z.object({is_ai_assistant: z.boolean().optional(), is_ai_crawler: z.boolean().optional(), is_bot: z.boolean().optional(), is_crawler: z.boolean().optional()}).optional()});

export const resultMeta = z.object({total: z.number().int(), request_id: z.string(), duration: z.number().int()});

export const userAgentParseResponse = z.object({data: z.object({objects: z.array(userAgentRecord), meta: resultMeta.optional()})});

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
};

/**
 * Parse a user-agent string
 * 
 * GET /user-agent/v1
 * 
 * Also accepts auth: KeyQuery
 */
export const getApiUserAgentV1 = async (args: GetApiUserAgentV1Args, options?: GetApiUserAgentV1Options) => {
const {baseUrl = "https://api.restcountries.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.ua != null) query.append("ua", String(args.ua))
if (args.response_fields != null) query.append("response_fields", String(args.response_fields))
if (args.response_fields_omit != null) query.append("response_fields_omit", String(args.response_fields_omit))
if (args.pretty != null) query.append("pretty", String(args.pretty))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/user-agent/v1${query.size > 0 ? `?${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(userAgentParseResponse, await res.json())
};