/**
 * Returns the corresponding component/function/object based on the type of instance.
 * Based on the node env params, return the correct prop.
 * Default is to return the ImEX Prop
 * @typedef {Object} InstanceManagerObject
 * @property { string | object | function } rome  Return this prop if Rome.
 * @property { string | object | function } promanager Return this prop if Rome.
 * @property { string | object | function } imex  Return this prop if Rome.
 */

function InstanceManager({ args, instance, debug, executeFunction, rome, promanager, imex }) {
  let propToReturn = null;

  switch (instance || process.env.INSTANCE) {
    case 'IMEX':
      propToReturn = imex;
      break;
    case 'ROME':
      propToReturn = rome; //TODO:AIO Implement USE_IMEX
      break;
    case 'PROMANAGER':
      //Return the rome prop if USE_ROME.
      //If not USE_ROME, we want to default back to the rome prop if it's undefined.
      //If null, we might want to show nothing, so make sure we return null.
      propToReturn =
        promanager === 'USE_ROME' ? rome : promanager !== undefined ? promanager : rome;
      break;
    default:
      propToReturn = imex;
      break;
  }

  if (debug) {
    console.log('InstanceRenderManager Debugger');
    console.log('=========================');
    console.log({ executeFunction, rome, promanager, imex, debug, propToReturn });
    console.log('=========================');
  }

  //Checking to see if we need to default to another one.
  if (propToReturn === 'imex') {
    propToReturn = imex;
  }
  if (executeFunction && typeof propToReturn === 'function') return propToReturn(...args);
  return propToReturn === undefined ? null : propToReturn;
}

exports.default = InstanceManager;