converter url post/thread lama ke format POST atau THREAD

migrator.js

// @ts-check

const fs = require('fs');
const path = require('path');

// CATATAN:
// Untuk Path, apabila di CMD tertera sebagai C:\Users\darkash\Desktop
// maka setiap backslash "\" wajib diulang 2x menjadi C:\\Users\\darkash\\Desktop
const inputPath = path.format({
    dir: 'C:\\Users\\darkash\\Desktop', // lokasi folder file input, disesuaikan
    base: 'input.txt' // file txt yang mau di convert
});
const outputPath = path.format({
    dir: 'C:\\Users\\darkash\\Desktop', // lokasi folder output, disesuaikan
    base: 'output.txt' // file txt setelah diconvert
});

// handle default url title: [URL]https://forum.indowebster.com/showthread.php?t=xxxx&p=xxxxx[/url]
const lazyRegex = /\[URL\](http|https):\/\/forum\.indowebster\.com\/.+\?(?<thread>t=\d+){0,1}&{0,1}(?<post>p=\d+){0,1}.+\[\/URL\]/i;
// handle custom url title: [url=https://forum.indowebster.com/showthread.php?t=xxxx&p=xxxxx]IDWS[/url]
const diligentRegex = /\[URL=\"{0,1}(http|https):\/\/forum\.indowebster\.com\/.+\?(?<thread>t=\d+){0,1}&{0,1}(?<post>p=\d+){0,1}.*\"{0,1}\](?<title>.*)\[\/URL\]/i;
const postUrlRegex = /\[url\].+\[\/url\]|\[url=.+].*\[\/url\]/i;
const threadUrlRegex = /\[url\].+\[\/url\]|\[url=.+].*\[\/url\]/i;

const file = fs.readFileSync(inputPath);
const text = file.toString();
const splitted = text.split('\n');
let tempOutput = [];
splitted.map((line) => {
    let match;
    match = line.match(lazyRegex) || line.match(diligentRegex);
    if (match === null) {
        tempOutput.push(line);
        return;
    }
    const { post, thread, title } = match.groups;
    if (typeof post === 'undefined' && typeof thread === 'undefined') {
        tempOutput.push(line);
        return;
    }
    if (typeof post !== 'undefined' && post.length > 0) {
        const postTitle = title || `[PLAIN]https://forum.idws.id/posts/${post.slice(2, post.length)}[/PLAIN]`;
        const replacement = line.replace(postUrlRegex, `[U][POST=${post.slice(2, post.length)}]${postTitle}[/POST][/U]`);
        tempOutput.push(replacement);
        return;
    }
    const threadTitle = title || `[PLAIN]https://forum.idws.id/threads/${thread.slice(2, thread.length)}[/PLAIN]`;
    const replacement = line.replace(threadUrlRegex, `[U][THREAD=${thread.slice(2, thread.length)}]${threadTitle}[/THREAD][/U]`);
    tempOutput.push(replacement);
    return;
});
fs.writeFileSync(outputPath, tempOutput.join('\n'));