amandoti/cindermail

import { execFileSync } from "node:child_process";
import { existsSync, readFileSync, writeFileSync } from "node:fs";
import { createInterface } from "node:readline/promises";
import { stdin, stdout } from "node:process";

import { printBanner } from "../src/banner.ts";

const rl = createInterface({ input: stdin, output: stdout });

async function ask(question: string, fallback = ""): Promise<string> {
  const suffix = fallback ? ` [${fallback}]` : "";
  const answer = (await rl.question(`${question}${suffix}: `)).trim();
  return answer || fallback;
}

async function confirm(question: string): Promise<boolean> {
  const answer = (await rl.question(`${question} [y/N]: `)).trim().toLowerCase();
  return answer === "y" || answer === "yes";
}

function setEnvValue(content: string, key: string, value: string): string {
  const pattern = new RegExp(`^#?\\s*${key}=.*$`, "m");
  const line = `${key}=${value}`;
  return pattern.test(content) ? content.replace(pattern, line) : `${content.trimEnd()}\n${line}\n`;
}

// Commented-out in the example so mail.tm mode doesn't pick up a stale domain.
function commentOutEnvValue(content: string, key: string): string {
  return content.replace(new RegExp(`^${key}=.*$`, "m"), `# ${key}= (unused in mail.tm mode)`);
}

async function writeGuarded(path: string, content: string): Promise<boolean> {
  if (existsSync(path) && !(await confirm(`${path} already exists. Overwrite it?`))) {
    console.log(`Left ${path} alone. Nothing written.`);
    return false;
  }
  writeFileSync(path, content);
  console.log(`Wrote ${path}`);
  return true;
}