import { readFileSync, writeFileSync, existsSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = dirname(fileURLToPath(import.meta.url));

const roadmap = readFileSync(join(__dirname, "../org/study_deck_02/roadmap.org"), "utf8");
const dsaDir = join(__dirname, "../org/study_deck_02/dsa");

const topicSlug = (name) =>
  name
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/(^-|-$)/g, "");

let currentTopic = "";
let count = 0;

for (const line of roadmap.split("\n")) {
  const topicMatch = line.match(/^\* TODO (.+?) \[/);
  if (topicMatch) {
    currentTopic = topicSlug(topicMatch[1]);
    continue;
  }

  const problemMatch = line.match(
    /^\*\* TODO (\d+)\. (.+?) :(easy|medium|hard):/
  );
  if (problemMatch) {
    const [, num, name, diff] = problemMatch;
    const slug = name
      .toLowerCase()
      .replace(/[^a-z0-9]+/g, "-")
      .replace(/(^-|-$)/g, "");
    const code = `${num}-${slug}`;
    const filePath = join(dsaDir, currentTopic, `${code}.org`);

    if (existsSync(filePath)) continue;

    const relPath = `../../roadmap.org::*${num}. ${name}`;
    const content = `#+PROPERTY: STUDY_DECK_02
* TODO ${num}. ${name} :${diff}:
:PROPERTIES:
:NEETCODE: [[file:${relPath}][Roadmap]]
:END:

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python

#+end_src

** TODO C++
#+begin_src cpp

#+end_src
`;
    writeFileSync(filePath, content);
    count++;
  }
}

console.log(`Created ${count} note files`);