einundzwanzig-portal/app/Http/Controllers/Api/LanguageController.php

<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use JoeDixon\Translation\Language;
use JoeDixon\Translation\Translation;

class LanguageController extends Controller
{
    /**
     * Display a listing of the resource.
     * @return \Illuminate\Http\Response
     */
    public function index(Request $request)
    {
        return Language::query()
                       ->select('id', 'name', 'language')
                       ->orderBy('name')
                       ->with([
                           'translations:value,language_id',
                       ])
                       ->when(
                           $request->search,
                           fn(Builder $query) => $query
                               ->where('name', 'ilike', "%{$request->search}%")
                               ->orWhere('language', 'ilike', "%{$request->search}%")
                       )
                       ->when(
                           $request->exists('selected'),
                           fn(Builder $query) => $query->whereIn('language', $request->input('selected', [])),
                           fn(Builder $query) => $query->limit(10)
                       )
                       ->get()
                       ->map(function (Language $language) {
                           $translated = $language->translations->whereNotNull('value')
                                                                ->where('value', '<>', '')
                                                                ->count();
                           $toTranslate = Translation::query()
                                                     ->where('language_id', $language->id)
                                                     ->count();
                           $language->name = $language->name ? trans($language->name) : $language->language;
                           $language->description = $language->language === 'en' ? '100% translated' : round($translated / $toTranslate * 100).'% translated';

                           return $language;
                       });
    }

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

    /**
     * Display the specified resource.
     *
     * @param  $language
     *
     * @return \Illuminate\Http\Response
     */
    public function show(Language $language)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  $language
     *
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Language $language)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  $language
     *
     * @return \Illuminate\Http\Response
     */
    public function destroy(Language $language)
    {
        //
    }
}