file/app/Http/Requests/FileStoreRequest.php

<?php

namespace App\Http\Requests;

use App\Models\File;
use App\Utilities\Polices\BasePolicy;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\Storage;

class FileStoreRequest extends FormRequest
{
    public function isImage($file)
    {
        if (@is_array(getimagesize($file))) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {

        if (!app()->collection->tmp_support && !$this->model_id) {
            return false;
        }
        if (app()->collection->count !== 1 && (app()->collection->count <=   File::where('user_id', auth()->id())->where('collection_id',app()->collection->id)->count()) && !app()->collection->tmp_support) {
            return false;
        }
        if (!app()->bound('file') && is_null($this->file('file'))) {
            return false;
        }

        if (!$this->hasFile('file')) {
            $this->replace([
                'file' => new \Illuminate\Http\File(app()->file->getPath(), app()->file->uuid . '.' . app()->collection->ext)
            ]);
        }

        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, mixed>
     */
    public function rules()
    {
        return [
            "file" =>             [
                "mimes:" . app()->collection->getExts(),
                "mimetypes:" . app()->collection->getMimeTypes(),
                !$this->isImage(request()->file->path()) ?: "dimensions:min_width=" . app()->collection->min_width . ",min_height=" . app()->collection->min_height . ',max_width=' . app()->collection->max_width . ',max_height=' . app()->collection->max_height,
                "max:" . app()->collection->max_file_size,
                "min:" . app()->collection->min_file_size,
            ],
            "alts" => [app()->collection->alt_required ? "required" : "nullable", 'array'],
            "alts.*" => [app()->collection->alt_required ? "required" : "nullable", 'max:1000'],
            "description" => [app()->collection->description_required ? "required" : "nullable", 'max:300'],
            'original_name' => ["string", "nullable", 'max:300'],
            'published_at' => ['date_format:Y-m-d H:i:s', 'nullable'],
        ];
    }
}