event.js

import Vue from 'vue'

// Event proxy/bus for sharing data across non-parent child components
// https://vuejs.org/v2/guide/components.html#Non-Parent-Child-Communication

const event = {
    bus: null,

    init() {
        if (!this.bus) {
            this.bus = new Vue();
        }

        return this;
    },

    emit(name, ...args) {
        this.bus.$emit(name, ...args);
        return this;
    },

    on() {
        if (arguments.length === 2) {
            this.bus.$on(arguments[0], arguments[1]);
        } else {
            Object.keys(arguments[0]).forEach(key => {
                this.bus.$on(key, arguments[0][key]);
            });
        }

        return this;
    },

    off() {
        this.bus.$off(...arguments)
    }
}

export {event};