einundzwanzig-portal/app/Http/Livewire/Frontend/Header.php

<?php

namespace App\Http\Livewire\Frontend;

use App\Models\BitcoinEvent;
use App\Models\City;
use App\Models\Country;
use App\Models\CourseEvent;
use App\Models\LibraryItem;
use App\Models\MeetupEvent;
use App\Models\OrangePill;
use Illuminate\Support\Facades\Cookie;
use Illuminate\Support\Facades\Route;
use Livewire\Component;

class Header extends Component
{
    public ?Country $country = null;

    public $currentRouteName;

    public string $c = 'de';

    public string $l = 'de';

    public $bgColor = 'bg-21gray';

    protected $queryString = ['l'];

    public function rules()
    {
        return [
            'c' => 'required',
            'l' => 'required',
        ];
    }

    public function mount()
    {
        $this->l = Cookie::get('lang') ?: config('app.locale');
        if (!$this->country) {
            $this->country = Country::query()
                                    ->where('code', $this->c)
                                    ->first();
        }
        $this->currentRouteName = Route::currentRouteName();
        $this->c = $this->country->code;
    }

    public function updatedC($value)
    {
        return to_route($this->currentRouteName, ['country' => $value, 'lang' => $this->l]);
    }

    public function updatedL($value)
    {
        Cookie::queue('lang', $this->l, 60 * 24 * 365);

        return to_route($this->currentRouteName, ['country' => $this->c, 'l' => $value]);
    }

    public function render()
    {
        Cookie::queue('lang', $this->l, 60 * 24 * 365);

        return view('livewire.frontend.header', [
            'news'          => LibraryItem::query()
                                          ->with([
                                              'createdBy.roles',
                                              'lecturer',
                                              'tags',
                                          ])
                                          ->where('type', 'markdown_article')
                                          ->where('news', true)
                                          ->orderByDesc('created_at')
                                          ->take(2)
                                          ->get(),
            'meetups'       => MeetupEvent::query()
                                          ->with([
                                              'meetup.users',
                                              'meetup.city.country',
                                          ])
                                          ->where('start', '>', now())
                                          ->orderBy('start')
                                          ->take(2)
                                          ->get(),
            'courseEvents'  => CourseEvent::query()
                                          ->with([
                                              'venue.city.country',
                                              'course.lecturer',
                                          ])
                                          ->where('from', '>', now())
                                          ->orderBy('from')
                                          ->take(2)
                                          ->get(),
            'libraryItems'  => LibraryItem::query()
                                          ->with([
                                              'lecturer',
                                          ])
                                          ->where('type', '<>', 'markdown_article')
                                          ->orderByDesc('created_at')
                                          ->take(2)
                                          ->get(),
            'bitcoinEvents' => BitcoinEvent::query()
                                           ->with([
                                               'venue',
                                           ])
                                           ->where('from', '>', now())
                                           ->orderBy('from')
                                           ->take(2)
                                           ->get(),
            'orangePills'   => OrangePill::query()
                                         ->with([
                                             'user',
                                             'bookCase',
                                         ])
                                         ->orderByDesc('date')
                                         ->take(2)
                                         ->get(),
            'cities'        => City::query()
                                   ->select(['latitude', 'longitude'])
                                   ->get(),
            'countries'     => Country::query()
                                      ->select('id', 'name', 'code')
                                      ->orderBy('name')
                                      ->get()
                                      ->map(function (Country $country) {
                                          $country->name = config('countries.emoji_flags')[str($country->code)
                                                  ->upper()
                                                  ->toString()].' '.$country->name;

                                          return $country;
                                      }),
        ]);
    }
}