fix: prevents self approval (#8)

Reviewed-on: #8
Co-authored-by: Paul Couture <paul@paulcouture.com>
Co-committed-by: Paul Couture <paul@paulcouture.com>

site/app/Http/Controllers/ArtworkController.php

@@ -90,6 +90,9 @@ class ArtworkController extends Controller
             'artwork_id' => 'required|exists:artworks,id'
         ]);
         $artwork = Artwork::find($request->artwork_id);
+        if ($artwork->artist_id == $user->artists->first()->id) {
+            return redirect('/approve-artwork');
+        }
         if (is_null($artwork->approved_by)) {
             $artwork->approved_by = $user->artists->first()->id;
             $artwork->save();