"use strict";

const Promise = require("bluebird");
const path = require("path");
const browserify = require("browserify");
const util = require("util");
const fs = require("fs");
const chalk = require("chalk");

let mkdirAsync = util.promisify(fs.mkdir);

module.exports = function bundle({ options, staticPath, entryPaths }) {
	let targetBundlePath = staticPath(options.bundlePath);
	let targetFolder = path.dirname(targetBundlePath);
	
	let browserifyOptions = {
		debug: options.sourceMaps,
		... options.browserify
	};
	
	let browserifyInstance = browserify(browserifyOptions);
	browserifyInstance.add(entryPaths);
	
	return Promise.try(() => {
		return mkdirAsync(targetFolder, { recursive: true });
	}).then(() => {
		browserifyInstance
			.bundle()
			.pipe(fs.createWriteStream(targetBundlePath))
			.on("finish", () => {
				console.log(`${chalk.bold.green("Bundle generated:")} ${targetBundlePath}`);
			});
	});
};