viktor-podzigun / node-nodejs-fundamentals / 23298624455

import readline from "readline";

const interactive = () => {

  // Write your code here

  // Use readline module for interactive CLI

  // Support commands: uptime, cwd, date, exit

  // Handle Ctrl+C and unknown commands

  const rl = readline.createInterface({

    input: process.stdin,

    output: process.stdout,

  });

  console.log(

    "Please, enter one of the following commands: uptime, cwd, date, exit",

  );

  /** @type {(onAnswer: (answer: string) => void) => void} */

  function prompt(onAnswer) {

    rl.question("> ", (answer) => {

      onAnswer(answer);

    });

  }

  /** @type {(answer: string) => void} */

  const handler = (answer) => {

    switch (answer) {

      case "uptime":

        console.log(`${Math.floor(process.uptime())} seconds`);

        prompt(handler);

        break;

      case "cwd":

        console.log(process.cwd());

        prompt(handler);

        break;

      case "date":

        console.log(new Date());

        prompt(handler);

        break;

      case "exit":

        rl.close();

        break;

      default:

        console.log("Unsupported command!");

        prompt(handler);

        break;

    }

  };

  prompt(handler);

};

interactive();