imagefs.js

'use strict'

const fs = require('fs')
const util = require('util')
const mime = require('mime-types')

const copy = util.promisify(fs.copyFile)
const unlink = util.promisify(fs.unlink)
const exists = util.promisify(fs.exists)

const uploadPicture = async(path, mimeType, fileName, newPath) => {
	try{
		if(path.length === 0) throw new Error('path is blank')
		if(mimeType.length === 0) throw new Error('mimeType is blank')
		const extension = mime.extension(mimeType)
		const acceptedExtension = ['jpg', 'png', 'webp', 'tiff', 'gif', 'svg']
		if(acceptedExtension.includes(extension) === false) throw new Error('file type is not suitable for upload')
		const newFile = `${newPath}${fileName}.${extension}`
		await copy(path, newFile)
		return true
	} catch(err) {
		throw err
	}
}

const deletePicture = async(targetFile) => {
	try{
		if(await exists(`${targetFile}`) === false) throw new Error('image file does not exist')
		await unlink(`${targetFile}`)
		return true
	} catch(err) {
		throw err
	}
}

const renamePicture = async(targetFile, newName) => {
	try{
		if(await exists(`${targetFile}`) === false) throw new Error('file does not exist')
		const name = String(newName)
		await copy(`${targetFile}`, `${name}`)
		await unlink(`${targetFile}`)
		return true
	} catch(err) {
		throw err
	}
}


module.exports = {uploadPicture, deletePicture, renamePicture}