nodejs script to convert a dokuwiki data folder to markdown files

dokuwikifolder2markdown.js

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

const folderPath = './'; // Replace with the actual folder path

// Function to rename a file from .txt to .md and replace content
function renameAndReplace(filePath) {
  const newFilePath = filePath.replace('.txt', '.md');
  fs.renameSync(filePath, newFilePath);

  fs.readFile(newFilePath, 'utf8', (err, data) => {
    if (err) {
      console.error(`Error reading file ${newFilePath}:`, err);
      return;
    }

    let updatedContent = data.replace(/====== (.+) ======/g, '# $1');
    updatedContent = updatedContent.replace(/===== (.+) =====/g, '## $1');
    updatedContent = updatedContent.replace(/==== (.+) ====/g, '### $1');
    updatedContent = updatedContent.replace(/=== (.+) ===/g, '#### $1');
    updatedContent = updatedContent.replace(/\[\[(.+?)\|(.+)\]\]/g, (_, p1, p2) => {
        return `[[${p1.replace(/:/g, "/")}|${p2}]]`;
    });
    updatedContent = updatedContent.replace(/\[\[(.+?)\]\]/g, (_, p1,) => {
        return `[[${p1.replace(/:/g, "/")}]]`;
    });
    updatedContent = updatedContent.replace(/\{\{:(.+?)\?(.+?)\|\}\}/g, (_, p1, p2) => {
        return `![[${p1.replace(/:/g, "/")}|${p2}]]`;
    });
	updatedContent = updatedContent.replace(/\{\{:(.+?)\??\}\}/g, (_, p1) => {
        return `![[${p1.replace(/:/g, "/")}]]`;
    });
    updatedContent = updatedContent.replace(/  \*/g, "*");
    
    fs.writeFile(newFilePath, updatedContent, 'utf8', err => {
      if (err) {
        console.error(`Error writing updated content to ${newFilePath}:`, err);
        return;
      }
      console.log(`File ${newFilePath} has been renamed and content updated.`);
    });
  });
}

// Function to scan the folder recursively for .txt files and process them
function scanFolderRecursively(folderPath) {
  fs.readdir(folderPath, (err, files) => {
    if (err) {
      console.error(`Error reading folder ${folderPath}:`, err);
      return;
    }

    files.forEach(file => {
      const filePath = path.join(folderPath, file);
      fs.stat(filePath, (err, stats) => {
        if (err) {
          console.error(`Error getting stats for ${filePath}:`, err);
          return;
        }

        if (stats.isDirectory()) {
          scanFolderRecursively(filePath);
        } else if (path.extname(file) === '.txt') {
          renameAndReplace(filePath);
        }
      });
    });
  });
}

scanFolderRecursively(folderPath);