mergeFiles.js

// NodeJS program to merge Arena files into one runnable code

const fs = require("fs").promises;
const package = require("./package.json");
let date = new Date(), buildID;
let credits, abilitySystemInfo = function (tmpl_name) {
	return `const __ABILITY_SYSTEM_INFO__ = {
	name: "${package.name}",
	branch: "${tmpl_name}",
	version: "${package.version}",
	buildID: "${buildID}"
};\n\n`;
};

const getContent = async function (fileName) {
	let content;
	try {
		content = await fs.readFile("./files/" + fileName, "utf-8");
	}
	catch (e) { throw "notexists" };
	let match;
	while ((match = content.match(/\/\*\simport\s(.+?)\s\*\//)) != null) {
		let index = match.index;
		let len = match[0].length;
		let args = String(match[1]).split(" "), file = args.shift();
		content = content.slice(0, index) + "\n\n" + (args.map(e => e.toLowerCase()).includes("notimestamp") ? "" : `/* Imported from ${file} at ${date.toString()} */\n\n`) + await getContent(file) + "\n\n" + content.slice(index + len, content.length);
	}
	return content;
}

const getTemplateContent = async function (template_name) {
	try {
		return await getContent("templates/" + template_name + ".js", template_name);
	}
	catch (e) {
		if ("notexists" == e) throw `Can't find template named '${template_name}'`;
		throw e;
	}
}

const compile = async function (template_name) {
	let content;
	try {
		content = await getTemplateContent(template_name);
	}
	catch (e) {
		if ("string" == typeof e) return console.log(e);
		return console.error(`Failed to parse content in template '${template_name}'. Caught`, e);
	}

	let outputFileName = package.name + "_v" + package.version + "_" + template_name + ".js";

	if (credits == null) credits = await fs.readFile("./files/Credits.js", "utf-8");
	
	try {
		await fs.writeFile("releases/" + outputFileName, (credits + "\n\n" + abilitySystemInfo(template_name) + content).trim());
	}
	catch (e) { return console.error(`Failed to write to file '${outputFileName}'. Caught`, e) }

	console.log("Write successfully to", outputFileName);
}

const compileMultipleFiles = async function (templates) {
	for (let template of templates) await compile(template);
}

let args = process.argv.slice(2).filter(e => e.trim());

let templates = args.slice(1);

if (args[0]) {
	buildID = args[0];

	if (templates.length < 1) templates = package.branches;

	compileMultipleFiles(templates);
}
else console.log("No Build ID specified. Canceling the process.");