import {z} from 'zod'

export type Card = {name: string, number: string, exp_month: number, exp_year: number, cvv?: string | undefined, merchant?: ({vgs_merchant_id?: string | undefined, sub_merchant_name?: string | undefined, sub_merchant_mid?: string | undefined}) | undefined};

export type CreateApiCardCheckArgs = {body: Card};

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

export const checkedCard = z.object({name: z.string().max(255), number: z.string().min(13).max(19), exp_month: z.number().int().gte(1).lte(12), exp_year: z.number().int().gte(0).lte(99), cvv: z.string().optional(), merchant: z.object({vgs_merchant_id: z.string().max(255).optional(), sub_merchant_name: z.string().max(255).optional(), sub_merchant_mid: z.string().max(255).optional()}).optional(), failure_code: z.enum(["account-updater-not-supported", "merchant-not-found", "invalid-exp-date", "invalid-payload", "invalid-param", "internal-server-error"]).optional(), event: z.enum(["au_card.valid", "au_card.updated", "au_card.expired", "au_card.closed", "au_card.non_participating", "au_card.contact_cardholder_advice", "au_card.unknown", "au_card.enrolled", "au_card.opt_out"]).optional()});

export const checkCardData = z.object({data: checkedCard});

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 a card for updates in VGS Account Updater
 * 
 * POST /card-check
 */
export const createApiCardCheck = async (args: CreateApiCardCheckArgs, options?: CreateApiCardCheckOptions) => {
const {baseUrl = "https://sandbox.vgsapi.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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