import {z} from 'zod'

export type OtpPurpose = 'SIGN_IN' | 'DELETE_ACCOUNT' | 'ADD_PAYMENT_METHOD' | 'EDIT_PAYMENT_METHOD' | 'CEX_ORDER_CONFIRMATION' | 'PHONE_NUMBER_VERIFICATION' | 'AUTHENTICATE_ACTION' | 'WALLET_RECOVERY' | 'WALLET_RESET' | 'MFA_SETUP';

export type PhoneNumberVerificationChannel = 'SMS' | 'WHATSAPP';

export type GetApiUsersMeSendOtpArgs = {purpose: OtpPurpose, verificationChannel?: PhoneNumberVerificationChannel | undefined};

export type GetApiUsersMeSendOtpOptions = {baseUrl?: string | undefined, HMACAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const otpSendResponse = z.object({sent: z.boolean().optional(), authSessionId: z.string().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
};

/**
 * Provide otp for user
 * 
 * GET /users/me/send-otp
 */
export const getApiUsersMeSendOtp = async (args: GetApiUsersMeSendOtpArgs, options?: GetApiUsersMeSendOtpOptions) => {
const {baseUrl = "https://external.dev.onboardpay.co", fetch: fetchFn = fetch, HMACAuth} = options ?? {}

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

if (args.purpose != null) query.append("purpose", String(args.purpose))
if (args.verificationChannel != null) query.append("verificationChannel", String(args.verificationChannel))
if (HMACAuth !== undefined) headers.set("x-api-key", HMACAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/users/me/send-otp${query.size > 0 ? `?${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(otpSendResponse, await res.json())
};