Folder Grouping

migrator.js

/**
 | Created since I have multiple image files in one folder example:
 | "Holiday at Hawaii 2022 - image 1.jpg"
 | "Holiday at Hawaii 2022 - image 2.jpg"
 | "Holiday at Hawaii 2022 - image 3.jpg"
 | "Alex Birthday 2019 - IMG2021290219.jpg"
 | "Alex Birthday 2019 - IMG2021901920.jpg"
 |
 | I want to move them to their own individual folder "Holiday at Hawaii 2022" & "Alex Birthday 2019"
 | --------------------------------------------------
 | Require NodeJS > v10 installed.
 | 
 | Steps to use:
 | 1. Add this to your images folder
 | 1. Run "node migrator.js"
 */
const fs = require("fs");
const path = require("path");

const fileType = '.jpg';    // file types to move, excluding this remover.js file
const deliminator = " – ";  // split title from filenames
let fileNames = [];         // store current file names in folder
let collection = [];        // multidemension arr store folder name, files list

/**
 * Fetch all "jpg" files from current folder
 */
fs.readdirSync(__dirname).forEach(file => {
    if (file.endsWith(fileType)) {
        fileNames = [...fileNames, file];
    };
});

/**
 * Map respective files and title into object
 */
while (fileNames.length > 0) {
    // get title from filename
    let title = fileNames[0].split(deliminator)[0];

    // find matching files in array
    let files = fileNames.filter((item) => {
        return item.startsWith(title + ' ');
    })

    // update filename list by removing sorted files
    // this considering filenames is already sorted by name from readdirSync
    fileNames.splice(0, files.length);

    //push to tempoary object collection
    collection = [...collection, {
        "title": title,
        "files": files
    }];
}

/**
 * Migrate files to respective directories
 */
collection.forEach(object => {

    object.files.forEach(file => {
        const currentPath = path.join(__dirname, file);
        const folderPath = path.join(__dirname, object.title);
        const destinationPath = path.join(folderPath, file);

        try {
            // create directory
            if (!fs.existsSync(folderPath)) {  //check if folder already exists
                fs.mkdirSync(folderPath);      //creating folder
            }

            // move files
            fs.rename(currentPath, destinationPath, function (err) {
                if (err) {
                    throw err
                } else {
                    console.log(`Moved ${file} to ${object.title}`);
                }
            });
        } catch (error) {
            throw error;
        }
    });
})