Include custom beatmap tags set by own user in response

[notbakaneko]

• shouldn't query every beatmap separately

[nanaya]

so this kinda works but I don't know if better 🤔 less fake ownBeatmapTags at least, and maybe call it current_user_tag_ids and always use Auth::user() in the scope.

Or maybe JSON_OBJECTAGG($userId, JSON_ARRAYAGG(...)) and pass the current user all the way again.

public function scopeWithUserTagIds($query, $userId)
{
    if ($userId === null) {
        $tagQuery = \DB::query()->selectRaw('null');
    } else {
        $tagQuery = BeatmapTag
            ::where('user_id', $userId)
            ->whereColumn('beatmap_id', $this->qualifyColumn('beatmap_id'));
        $tagQuery->selectRaw("GROUP_CONCAT({$tagQuery->qualifyColumn('tag_id')} SEPARATOR ',')");
    }

    return $query->addSelect(['user_tag_ids' => $tagQuery]);
}