import {type BackendEndpoint} from '@myparcel-pdk/common';
import {isOfType, toArray} from '@myparcel/ts-utils';
import {type ActionInput} from '../types';

export const generateLabelFilename = (
  parameters: ActionInput<BackendEndpoint.PrintShipments | BackendEndpoint.PrintOrders>,
): string => {
  const prefix = 'myparcel-labels';
  const suffix = '.pdf';

  const orderIds = toArray(parameters.orderIds);

  if (orderIds.length > 1) {
    return `${prefix}${suffix}`;
  }

  if (isOfType<ActionInput<BackendEndpoint.PrintShipments>>(parameters, 'shipmentIds')) {
    const shipmentIds = toArray(parameters.shipmentIds);

    if (shipmentIds.length === 1) {
      return `${prefix}-${orderIds[0]}-${shipmentIds[0]}${suffix}`;
    }
  }

  return `${prefix}-${orderIds[0]}${suffix}`;
};