dispatcher.js

export default class Dispatcher {
	constructor() {
		this._events = [];
		this._service = [];
	}


	on(action, fn) {
		if (!action) throw new Error('DispatcherError: Missing variable' + action + ' is not defined');
		if (!fn || typeof fn != 'function') throw new Error('DispatcherError: ' + fn + ' is not a function');

		if (!this._events[action]) this._events[action] = [];

		this._events[action].push(fn);

		return {
			remove() {
				delete this._events[action];
			}
		}
	}

	trigger(action, param) {
		if (!action) throw new Error('DispatcherError: Missing variable ' + action + ' is not defined');
	
		if (!this._events[action]) return;
		this._events[action].forEach((act) => {
			act(param);
		});
	}

	off(action) {
		if (!action) throw new Error('DispatcherError: Missing variable ' + action + ' is not defined');
		if (!this._events[action]) return;

		delete this._events[action];
		console.log('dispatcher:off', this._events)
	}


	// create a handler here to capture the call requests
	call(action, param) {
		if (!this._service[action]) return;
		//if (this._data[action]) throw new Error('DispatcherError: ' + action + ' already exists');
		return this._service[action](param);
	}

	listenTo(action, ajax) {
		if (this._service[action]) throw new Error('DispatcherError: ' + action + ' already exists');
		this._service[action] = ajax;
	}


}