// file.js
const readline = require("node:readline");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: "CMD > ",
});

console.log('Type "history" to see Node.js internal history.');
rl.prompt();

rl.on("line", (line) => {
  const cmd = line.trim().toLowerCase();

  if (cmd === "ask") {
    rl.question("Enter secret (not in history): ", (answer) => {
      console.log(`> Secret was "${answer}".`);
      rl.prompt();
    });
  } else if (cmd === "history") {
    console.log("--- Node.js Internal History ---");
    console.log(rl.history);
    console.log("------------------------------");
    rl.prompt();
  } else if (cmd === "exit") {
    rl.close();
  } else {
    console.log(`> Command was "${cmd}"`);
    rl.prompt();
  }
});

rl.on("close", () => process.exit(0));