class Contract extends BaseContract
{
    public $created_date;
    public $last_update;
    /**
     * @return \yii\db\ActiveQuery
     */

    public function accessToAlter() {
        if(Yii::$app->user->isAdmin) {
            return true;
        }
        if($this->status == \common\models\DraftStatusLookup::max()) {
            return false;
        }
        return  true;
    }
    public function beforeSave($insert) {
        if (!parent::beforeSave($insert)) {
            return false;
        }
        var_dump(expression)
        if(!$this->accessToAlter()) {
            return false;
        }

        return true;
    }
    public function afterSave($insert, $changedAttributes) {
        parent::afterSave($insert, $changedAttributes);
        // var_dump($changedAttributes);die;

        if(!$insert && isset($changedAttributes['status'])) {
        // case : no active doc, status remain same : save normally
            if(!$this->activeDocument && ($changedAttributes['status'] == $this->oldAttributes['status'])){
                return true;
            }
        // case : status changed : do something
            if(!($changedAttributes['status'] == $this->oldAttributes['status'])){
            // create new draft status
                $draftStatus = new DraftStatus();
                $draftStatus->status_id = $changedAttributes['status'];

            // case : active doc : renew draft_status_id
                if($this->activeDocument) {
                    $draftStatus->draft_id = $this->activeDocument->id;
                    $draftStatus->status_id = $this->status;
                } else {
                    throw new \Exception(' Tiada draf perjanjian aktif');

                }
                if(!$draftStatus->save()){
                    throw new \Exception("fail save DS", 1);

                }
            // your code here like $changedAttributes['myField'];
            }
        } else {
            unset($this->status);
        }
    }
    //rename to access
    public function can($operation) {
        switch ($operation) {
            case 'view':
                return true;
            break;
            case 'edit':
                // if(Yii::$app->user->isAdmin || (!($this->can('bypass') || !$this->can('requireHighLevelBypassAuthority')))) {
                //     return false;
                // }
                if($this->can('bypass') || !$this->can('requireHighLevelBypassAuthority')) {
                    return true;
                }
            break;
            case 'delete':
                $isCreator = $this['created_by'] == Yii::$app->user->username;
                $permisionToDelete = ($isCreator && $this->can('bypass') && !$this->can('requireHighLevelBypassAuthority'));
                if(Yii::$app->user->isAdmin || $permisionToDelete) {
                    return true;
                }
            break;
            case 'bypass':
                return (Yii::$app->user->isJuu || Yii::$app->user->isAdmin);
            break;
            case 'requireHighLevelBypassAuthority':
                return  ($this['status'] >= Yii::$app->params['settings']['departmentAlterLimit']);
            break;
            default:
                throw new \yii\web\NotSupportedException("Sila tentukan kebenaran operasi.");
            break;
        }
        return false;

    }
}