Chain of responsibility

Before.cs

protected string GetClass(string code, bool approve)
{
    var evaluation = TrainingEvaluations.Find(x => x.EmployeeCode == code.Split('_')[0] && x.CriteriaCode == code.Split('_')[1]);
    var criteriaHasEvaluation = evaluation.Any();
    var isNew = code.Split('_')[1] == IEntity.NewCode;
    var effectiveness = TrainingEffectiveness.Find(x => x.EmployeeCode == code.Split('_')[0]);
    var hasEffectiveness = effectiveness.Any();


    if (hasEvaluation)
    {
        return evaluation.HasEvaluation
            ? approve
                ? evaluation.IsApproved
                    ? "approvedOn"
                    : "approvedOff"
                : !evaluation.IsApproved
                    ? "reprovedOn"
                    : "reprovedOff"
            : approve
                ? "approvedOff"
                : "reprovedOff";
    }

    if (!hasEffectiveness) return approve ? "approvedOff" : "reprovedOff";

    if (isNew) return "approvedOff";        

    switch (effectiveness.IsEffective)
    {
        case 0:
            return approve ? "approvedOff" : "reprovedOn";
        case 1:
            return approve ? "approvedOn" : "reprovedOff";
        default:
            return approve ? "approvedOff" : "reprovedOff";
    }
}