import {z} from 'zod'

export type GetApiApiV2NumbersAvailableArgs = {prefix?: number | undefined, tollfree?: (0 | 1) | undefined, country: string};

export type GetApiApiV2NumbersAvailableOptions = {baseUrl?: string | undefined, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const getAvailableDedicatedNumbersResponse = z.object({numbers: z.array(z.string()), price: z.number(), giftType: z.enum(["none", "registration", "first_month", "include_in_plan"])});

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
};

/**
 * Find dedicated numbers available for purchase
 * 
 * GET /api/v2/numbers/available
 */
export const getApiApiV2NumbersAvailable = async (args: GetApiApiV2NumbersAvailableArgs, options?: GetApiApiV2NumbersAvailableOptions) => {
const {baseUrl = "https://rest.textmagic.com", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/numbers/available${query.size > 0 ? `?${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(getAvailableDedicatedNumbersResponse, await res.json())
};