'use strict';

const Promise = require("bluebird");
const createEventEmitter = require("create-event-emitter");

module.exports = function(total, completionValue) {
	return createEventEmitter({
		await: function awaitCompletion() {
			return new Promise((resolve, reject) => {
				this.once("completed", () => {
					resolve(completionValue);
				}).once("error", (err) => {
					reject(err);
				});
			});
		},
		report: function reportStatus(status, description) {
			this.emit("progress", status / total, description, status, total);

			if (status >= total) {
				this.emit("completed");
			}
		}
	});
}