import {z} from 'zod'

export type AuthStatus = {Verdict?: string | undefined, ErrorCode?: number | undefined, ErrorDescription?: string | undefined, StatusMessage?: string | undefined};

export type TransactionCallbackRequest = {NayaxTransactionId?: number | undefined, SparkTransactionId?: (string | null) | undefined, SiteId?: number | undefined, TerminalId?: string | undefined, MachineId?: number | undefined, HwSerial?: string | undefined, MachineAuTime?: (string | null) | undefined, AuthStatus?: AuthStatus | undefined, CardLast4Digits?: (string | null) | undefined, CardHash?: string | undefined, CardUid?: (string | null) | undefined, Amount?: number | undefined} | null;

export type CreateApiTransactionCallbackArgs = {body: TransactionCallbackRequest};

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

export const status = z.object({Verdict: z.string().optional(), ErrorCode: z.number().int().nullable().optional(), ErrorDescription: z.string().nullable().optional(), StatusMessage: z.string().nullable().optional()});

export const transactionCallbackOutcome = z.object({SparkTransactionId: z.string().nullable().optional(), Status: status.optional()}).nullable();

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
};

/**
 * TransactionCallback
 * 
 * POST /TransactionCallback
 */
export const createApiTransactionCallback = async (args: CreateApiTransactionCallbackArgs, options?: CreateApiTransactionCallbackOptions) => {
const {baseUrl = "https://example.com:443", fetch: fetchFn = fetch} = options ?? {}

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

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