import {z} from 'zod'

export type GetApiTldsArgs = {sort?: ('tld:asc' | 'tld:desc') | undefined};

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

export const tLDType = z.union([z.literal(1), z.literal(2), z.literal(3)]);

export const tLD = z.object({tld: z.string(), tld_type: tLDType, whois_privacy: z.boolean(), auto_renew_only: z.boolean(), idn: z.boolean(), minimum_registration: z.number().int(), registration_enabled: z.boolean(), renewal_enabled: z.boolean(), transfer_enabled: z.boolean(), dnssec_interface_type: z.enum(["ds", "key"]), name_server_min: z.number().int(), name_server_max: z.number().int(), trustee_service_enabled: z.boolean(), trustee_service_required: z.boolean()});

export const pagination = z.object({current_page: z.number().int(), per_page: z.number().int(), total_entries: z.number().int(), total_pages: z.number().int()});

export const getApiTldsResponse = z.object({data: z.array(tLD), pagination: pagination});

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
};

/**
 * List TLDs
 * 
 * GET /tlds
 * 
 * Also accepts auth: bearerAuth
 */
export const getApiTlds = async (args: GetApiTldsArgs, options?: GetApiTldsOptions) => {
const {baseUrl = "https://api.dnsimple.com/v2", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.sort != null) query.append("sort", String(args.sort))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/tlds${query.size > 0 ? `?${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(getApiTldsResponse, await res.json())
};