import {z} from 'zod'

export type GetApiV1WhatsappPhoneNumbersAvailabilityArgs = {country: string, numberType?: ('local' | 'mobile' | 'national' | 'toll_free') | undefined, sms?: boolean | undefined};

export type GetApiV1WhatsappPhoneNumbersAvailabilityOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiV1WhatsappPhoneNumbersAvailabilityResponse = z.object({country: z.string().optional(), numberType: z.string().optional(), available: z.boolean().optional(), preOrderable: z.boolean().optional(), addressConstraint: z.enum(["geo", "country", "none"]).optional(), areas: z.array(z.string()).optional(), areaOptions: z.array(z.object({ndc: z.string().optional(), name: z.string().optional(), count: z.number().int().optional()})).optional(), soldOutAreas: z.array(z.object({ndc: z.string().optional(), name: z.string().optional(), preOrderable: z.boolean().optional()})).optional(), areaAvailability: z.object({inStock: z.array(z.object({ndc: z.string().optional(), name: z.string().optional(), count: z.number().int().optional(), ndcs: z.array(z.string()).optional(), aliases: z.array(z.string()).optional()})).optional(), preOrder: z.array(z.object({ndc: z.string().optional(), name: z.string().optional(), ndcs: z.array(z.string()).optional(), aliases: z.array(z.string()).optional()})).optional(), outOfStock: z.array(z.object({ndc: z.string().optional(), name: z.string().optional(), listed: z.number().int().optional(), ndcs: z.array(z.string()).optional(), aliases: z.array(z.string()).optional()})).optional()}).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
};

/**
 * Check country availability
 * 
 * GET /v1/whatsapp/phone-numbers/availability
 */
export const getApiV1WhatsappPhoneNumbersAvailability = async (args: GetApiV1WhatsappPhoneNumbersAvailabilityArgs, options?: GetApiV1WhatsappPhoneNumbersAvailabilityOptions) => {
const {baseUrl = "https://zernio.com/api", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.country != null) query.append("country", String(args.country))
if (args.numberType != null) query.append("numberType", String(args.numberType))
if (args.sms != null) query.append("sms", String(args.sms))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/whatsapp/phone-numbers/availability${query.size > 0 ? `?${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(getApiV1WhatsappPhoneNumbersAvailabilityResponse, await res.json())
};