journal-intime/app/Http/Controllers/ImageController.php

<?php

namespace App\Http\Controllers;

use App\Post;
use App\Services\ImageService;
use App\User;
use Illuminate\Support\Facades\Auth;
use Intervention\Image\Facades\Image;
use Illuminate\Support\Facades\File;
use Spatie\MediaLibrary\Models\Media;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;

class ImageController extends Controller
{
    /**
     * @param int $post_id
     * @param string $alias
     * @param string $image
     * @param ImageService $image_service
     *
     * @return mixed
     */
    public function display($post_id, $alias = '')
    {
        /** @var Post $post */
        $post = Post::find($post_id);

        if (Auth::user()->getAuthIdentifier() !== (int)$post->user_id) {
            throw new UnauthorizedHttpException('Cette image ne vous appartient pas.');
        }

        $first_media = $post->getFirstMedia('post_image');
        if (!$first_media instanceof Media) {
            throw new NotFoundHttpException('Média non trouvé en base.');
        }

        return Image::make($first_media->getPath($alias))->response($first_media->mime_type);
    }

    /**
     * @param string $alias
     * @return mixed
     */
    public function avatar($alias = '')
    {
        /** @var User $user */
        $user = User::find(Auth::user()->getAuthIdentifier());

        readfile($user->getFirstMediaPath('avatars', $alias));
        exit;
    }

    /**
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function gallery()
    {
        $posts_with_image = Post::where('user_id', Auth::user()->getAuthIdentifier())
            ->where('image', '!=', 'null')
            ->orderBy('created_at', 'desc')
            ->paginate(9);

        return view('gallery.my', [
            'posts' => $posts_with_image,
        ]);
    }
}