// 2nd.
const {sendActionToService} = require('@truss/comm');
const debug = require('debug')('truss:emitters');
exports.ActionEmitter = class ActionEmitter {

  constructor(executors, listeners) {
    this.executors = executors;
    this.listeners = listeners;
  }
  onExecutorResponse(res, eres) {
  }

  onNoExecutor(res) {
  }

  processAction(action, res) {
    debug(`Processing ${action.type}...`);
    // listeners...
    for (service of this.listeners[action.type] || []) {
      sendActionToService(action, service).done();
    }
    // executor
    if (!(action.type in this.executors)) {
      debug(`No executor for ${action.type}!`);
      this.onNoExecutor(action, res);
      return;
    }
    sendActionToService(action, this.executors[action.type]).then((eres) => {
      this.onExecutorResponse(action, res, eres);
    }).catch(console.error);
  }

}