/* eslint-disable
    handle-callback-err,
    standard/no-callback-literal,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * DS103: Rewrite code to no longer use __guard__
 * DS205: Consider reworking code to avoid use of IIFEs
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const app = require('../../../app');
require("logger-sharelatex").logger.level("info");
const logger = require("logger-sharelatex");
const Settings = require("settings-sharelatex");
const request = require('request');

const S3_TRIES = 30;

module.exports = {
	running: false,
	initing: false,
	callbacks: [],
	ensureRunning(callback) {
		if (callback == null) { callback = function(error) {}; }
		if (this.running) {
			return callback();
		} else if (this.initing) {
			return this.callbacks.push(callback);
		} else {
			this.initing = true;
			this.callbacks.push(callback);
			return app.listen(__guard__(Settings.internal != null ? Settings.internal.filestore : undefined, x => x.port), "localhost", error => { 
				if (error != null) { throw error; }
				this.running = true;
				logger.log("filestore running in dev mode");

				return (() => {
					const result = [];
					for (callback of Array.from(this.callbacks)) {
						result.push(callback());
					}
					return result;
				})();
			});
		}
	},

	waitForS3(callback, tries) {
		if (!(Settings.filestore.s3 != null ? Settings.filestore.s3.endpoint : undefined)) { return callback(); }
		if (!tries) { tries = 1; }

		return request.get(`${Settings.filestore.s3.endpoint}/`, (err, response) => {
			console.log(err, response != null ? response.statusCode : undefined, tries);
			if (!err && [200, 404].includes(response != null ? response.statusCode : undefined)) {
				return callback();
			}

			if (tries === S3_TRIES) {
				return callback('timed out waiting for S3');
			}

			return setTimeout(
				() => {
					return this.waitForS3(callback, tries + 1);
				},
				1000
			);
		});
	}
};

function __guard__(value, transform) {
  return (typeof value !== 'undefined' && value !== null) ? transform(value) : undefined;
}