public function getCharacterSkillsAmountPerLevel(int $character_id): array
    {

        $skills = CharacterSkill::where('character_id', $character_id)
            ->get();

        return [
            $skills->where('trained_skill_level', 0)->count(),
            $skills->where('trained_skill_level', 1)->count(),
            $skills->where('trained_skill_level', 2)->count(),
            $skills->where('trained_skill_level', 3)->count(),
            $skills->where('trained_skill_level', 4)->count(),
            $skills->where('trained_skill_level', 5)->count(),
        ];
    }