Issue attaching file to mail and setting name and mime type

Hi, I'm trying to attach a file to a mail before sending it, I'm getting the file through a form upload via AJAX (I dont want to save the file to storage).

But here is my question, I don't know how to get the mime and name of the file to put them as arguments into the attachData function of the mail build method.

Here is the mail:

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Contracts\Queue\ShouldQueue;

class AdvContactMail extends Mailable
{
    use Queueable, SerializesModels;

    
    
    public $name;
    public $email;
    public $body;
    public $file; 
    public $subject;
    public $sender_mail;
    public $restaurant; 
    
    
    public function __construct($name, $email, $body, $file, $subject, $restaurant, $sender_mail)
    {
        $this->name = $name;
        $this->email = $email;
        $this->body = $body;
        $this->file = $file;
        $this->subject = $subject;
        $this->restaurant = $restaurant;
        $this->sender_mail = $sender_mail;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        
        $sender_mail = config('globals.admin_mail');
        
        return $this->markdown('emails.adv_contact')
        ->from($this->sender_mail, 'ReseñasMálaga')
        ->subject($this->subject)
        ->attachData($this->file, 'name.pdf', [
            'mime' => 'application/pdf',
        ]);;
    }
}

I think to get the mime and name it would be done in controller so here is my controller method:

public function contactarArchivo(ContactFileMail $request)
    {
        
        $sender_mail = $request->email;;
        
        $destination_mail = config('globals.client_mail');
        
        $name = $request->name;
        
        $email = $request->email;
        
        $body = $request->body;
        
        $file = $request->file;
        
        $subject = "Solicitud de contacto de $name";
        
        $restaurant = config('globals.web_name');
        
        
        
        
        
        
        Mail::to($destination_mail)->send(new AdvContactMail($name, $email, $body, $file, $subject, $restaurant, $sender_mail));
        
        
        return response()->json(['success'=>'Mensaje enviado']);
    }