invoiceninja/app/Http/Controllers/TranslationController.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Cache;

/**
 * Class TranslationController.
 */
class TranslationController extends BaseController
{
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Display a listing of the resource.
     *
     * @return void
     */
    public function index()
    {
        $strings = Cache::rememberForever('lang.js', function () {
            $lang = config('app.locale');

            $files = glob(resource_path('lang/'.$lang.'/*.php'));
            $strings = [];

            foreach ($files as $file) {
                $name = basename($file, '.php');
                $strings[$name] = require $file;
            }

            return $strings;
        });

        header('Content-Type: text/javascript');
        echo 'i18n = '.$this->easyMinify(json_encode($strings)).';';
        exit();
    }

    private function easyMinify($javascript)
    {
        return preg_replace(["/\s+\n/", "/\n\s+/", '/ +/'], ["\n", "\n ", ' '], $javascript);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return void
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param Request $request
     * @return void
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @param int $id
     * @return void
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param int $id
     * @return void
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param Request $request
     * @param int $id
     * @return void
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param int $id
     * @return void
     */
    public function destroy($id)
    {
        //
    }
}