import {z} from 'zod'

export type CreateApiV3VaultCustomerArgs = {token: string, body: {firstName: string, lastName: string, cardAccount: {number?: string | undefined, expiryMonth?: string | undefined, expiryYear?: string | undefined, token?: string | undefined, avsStreet?: string | undefined, avsZip?: string | undefined, cvv?: string | undefined, magstripe?: string | undefined, alias?: string | undefined, emvData?: string | undefined, emvDataKsn?: string | undefined, track1?: string | undefined, track2?: string | undefined, track1Ksn?: string | undefined, track2Ksn?: string | undefined}}};

export type CreateApiV3VaultCustomerOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiV3VaultCustomerResponse = z.object({id: z.number().int().optional(), cardAccount: z.object({token: z.string().optional(), hasContract: z.boolean().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
};

/**
 * Create customer/vaulted card with token
 * 
 * POST /v3/vault/customer
 */
export const createApiV3VaultCustomer = async (args: CreateApiV3VaultCustomerArgs, options?: CreateApiV3VaultCustomerOptions) => {
const {baseUrl = "https://sandbox.api.mxmerchant.com/checkout", fetch: fetchFn = fetch} = options ?? {}

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

if (args.token != null) query.append("token", String(args.token))

const url = `${baseUrl.replace(/\/+$/, '')}/v3/vault/customer${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiV3VaultCustomerResponse, await res.json())
};