utils.js

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

function copyDir(srcDir, destDir) {
    fs.mkdirSync(destDir, { recursive: true })
    for (const file of fs.readdirSync(srcDir)) {
        const srcFile = path.resolve(srcDir, file)
        const destFile = path.resolve(destDir, file)
        copy(srcFile, destFile)
    }
}

function copy(src, dest) {
    const stat = fs.statSync(src)
    if (stat.isDirectory()) {
        copyDir(src, dest)
    } else {
        fs.copyFileSync(src, dest)
    }
}

function emptyDir(dir) {
    if (!fs.existsSync(dir)) {
        return
    }
    for (const file of fs.readdirSync(dir)) {
        const abs = path.resolve(dir, file)
        if (fs.lstatSync(abs).isDirectory()) {
            emptyDir(abs)
            fs.rmdirSync(abs)
        } else {
            fs.unlinkSync(abs)
        }
    }
}

module.exports = { emptyDir, copy, copyDir }