Allow multiplayer scores with arbitrary beatmap/ruleset combinations

app/Http/Controllers/Multiplayer/Rooms/Playlist/ScoresController.php

@@ -8,6 +8,7 @@
 use App\Exceptions\InvariantException;
 use App\Http\Controllers\Controller as BaseController;
 use App\Libraries\ClientCheck;
+use App\Models\Beatmap;
 use App\Models\Multiplayer\PlaylistItem;
 use App\Models\Multiplayer\PlaylistItemUserHighScore;
 use App\Models\Multiplayer\Room;
@@ -184,8 +185,15 @@ public function store($roomId, $playlistId)
         $request = \Request::instance();
         $params = $request->all();
 
-        if (get_string($params['beatmap_hash'] ?? null) !== $playlistItem->beatmap->checksum) {
-            throw new InvariantException(osu_trans('score_tokens.create.beatmap_hash_invalid'));
+        if ($playlistItem->beatmapset_id === null) {
+            if (get_string($params['beatmap_hash'] ?? null) !== $playlistItem->beatmap->checksum) {
+                throw new InvariantException(osu_trans('score_tokens.create.beatmap_hash_invalid'));
+            }
+        } else {
+            // Todo: Validate beatmap_hash param matches any checksum from the playlist item's beatmap set.
+            // Todo: Modifying the playlist item looks dodgy to me and is likely failing some internal validations.
+            $playlistItem->beatmap_id = Beatmap::firstWhere('checksum', get_string($params['beatmap_hash'] ?? null))->beatmap_id;
+            $playlistItem->ruleset_id = get_int($params['ruleset_id'] ?? null);
         }
 
         $buildId = ClientCheck::parseToken($request)['buildId'];