b64.mjs

#!/usr/bin/env node

/** @ts-check */

import { exec } from "node:child_process";
import { readFile } from "node:fs/promises";
import { createInterface } from "node:readline";

/**
 * @param {string} question
 */
async function prompt(question) {
	const rl = createInterface({
		input: process.stdin,
		output: process.stdout,
	});
	return new Promise((resolve) => {
		rl.question(question, (answer) => {
			rl.close();
			resolve(answer);
		});
	})
		.then((answer) => {
			return answer;
		})
		.catch((err) => {
			console.log(err);
		})
		.finally(() => {
			rl.close();
		});
}

/**
 * @param {string} str
 * @param {boolean} def
 */
function parseUserBool(str, def) {
	switch (str.toLowerCase()) {
		case "y":
		case "yes":
			return true;
		case "n":
		case "no":
			return false;
		default:
			return def;
	}
}

/**
 * @param {string} str
 */
function copyToClipboard(str) {
	exec(`echo "${str}" | pbcopy`);
}

/**
 * @name b64
 * @description Encodes a file's contents to base64. This is useful for storing JSON's as environment variables.
 * @author Tristan Camejo
 */
(async () => {
	const fileName = await prompt("Enter the file name: ");

	const data = await readFile(fileName);

	const copy = parseUserBool(await prompt("Copy to clipboard? (Y/N): "), true);

	if (copy) {
		copyToClipboard(data.toString("base64"));
	}

	return void console.log(Buffer.from(data).toString("base64"));
})();