#!/usr/bin/env node

import { readFileSync, writeFileSync } from 'node:fs';
import process from 'node:process';

const tag = process.argv[2].replace('v', '');
const log = readFileSync('./CHANGELOG.md', { encoding: 'utf-8' }).split('\n');
let result = '';
let inScope = false;
const regex = new RegExp(`^#+ \\[${tag}`);
for (let i = 0; i < log.length; i++) {
  if (regex.test(log[i])) {
    inScope = true;
    result += log[i];
    continue;
  }
  if (inScope && /^#+ \[/.test(log[i])) {
    inScope = false;
    break;
  }
  if (inScope) {
    result += `\n${log[i]}`;
  }
}
writeFileSync(`notes-v${tag}.md`, result);