NodeJS - Parse MD/MDX files and copy images to another folder (blog migration script) - run using `node export.js`

export.js

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

// Loop through all years
// Go into each folder

// Get MDX file
// Add template to frontmatter
// layout: "@/layouts/BlogLayout.astro"

// Found images in folder with MDX?
// Copy images to public/blog/YEAR folder

const ROOT = './content/blog/'
const IMAGE_ROOT = './images/'

const years = fs.readdirSync(path.join(ROOT))

years.forEach((year) => {
  const blogPostFolders = fs.readdirSync(path.join(ROOT, year))

  // Go into each folder
  blogPostFolders.forEach((blogPostFolder) => {
    const blogImagePath = path.join(IMAGE_ROOT, year)
    const blogPostFolderContents = fs.readdirSync(
      path.join(ROOT, year, blogPostFolder)
    )

    // Create folder if it doesn't exist
    if (!fs.existsSync(blogImagePath)) {
      fs.mkdirSync(blogImagePath)
    }

    blogPostFolderContents.forEach((file) => {
      const filePath = path.join(ROOT, year, blogPostFolder, file)
      const copyPath = path.join(IMAGE_ROOT, year, file)
      // Get MDX file
      // Add template to frontmatter
      // layout: "@/layouts/BlogLayout.astro"
      if (file.includes('.md')) {
        const blogPostMdx = fs.readFileSync(filePath, 'utf-8')
        console.log('mdx', blogPostMdx)

        // Find frontmatter closing tag (second `---`)
        const splitPost = blogPostMdx.split('---')
        console.log()
        splitPost[1] = `${splitPost[1]}
layout: "@/layouts/BlogLayout.astro"
`
        const joinPost = splitPost.join('---')

        // Save post
        // fs.writeFileSync(filePath, joinPost)
      }

      if (
        file.includes('.png') ||
        file.includes('.jpg') ||
        file.includes('.jpeg') ||
        file.includes('.gif') ||
        file.includes('.svg')
      ) {
        fs.copyFileSync(filePath, copyPath)
        fs.rmSync(filePath)
      }
    })
  })
})