<?php

class UserController extends Controller
{
    /**
     * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
     * using two-column layout. See 'protected/views/layouts/column2.php'.
     */
    public $layout='//layouts/column2';

    /**
     * @return array action filters
     */
    public function filters()
    {
        return array(
            'accessControl', // perform access control for CRUD operations
            'postOnly + delete', // we only allow deletion via POST request
        );
    }

    /**
     * Specifies the access control rules.
     * This method is used by the 'accessControl' filter.
     * @return array access control rules
     */
    public function accessRules()
    {
        return array(
            array('allow',  // allow all users to perform 'index' and 'view' actions
                'actions'=>array('view'),
                'users'=>array('@'),
            ),
            array('allow',  // allow all users to perform 'index' and 'view' actions
                'actions'=>array('index','view','create','update','admin','delete'),
                'users'=>array('@'),
                                'expression'=>'$user->isAdmin()',
            ),
            array('deny',  // deny all users
                'users'=>array('*'),
            ),
        );
    }

    /**
     * Displays a particular model.
     * @param integer $id the ID of the model to be displayed
     */
    public function actionView($id)
    {
        $this->render('view',array(
            'model'=>$this->loadModel($id),
        ));
    }

    /**
     * Creates a new model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     */
    public function actionCreate()
    {
        $model=new User('insert');

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if(isset($_POST['User']))
        {

            $model->attributes=$_POST['User'];
                        if ($model->validate()){
                        $model->salt = uniqid();
                        $hashPassword = User::model()->hashPassword($model->password, $model->salt);
                        $model->password = $hashPassword;

            if($model->save(false))
                $this->redirect(array('view','id'=>$model->id));
                    }
        }


        $this->render('create',array(
            'model'=>$model,
        ));
    }

    /**
     * Updates a particular model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id the ID of the model to be updated
     */
    public function actionUpdate($id)
    {
        $model=$this->loadModel($id);
                $oldpassword = $model->password;
                $model->password='';

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if(isset($_POST['User']))
        {
            $model->attributes=$_POST['User'];
                        if ($model->password==''){
                            $model->setScenario('noPassChange');
                            $model->password = $oldpassword;
                            if($model->save())
                $this->redirect(array('view','id'=>$model->id));

                        }
                        else{
                        $model->salt =  uniqid();
                        $hashPassword = User::model()->hashPassword($model->password, $model->salt);
                        $model->password = $hashPassword;
            if($model->save())
                $this->redirect(array('view','id'=>$model->id));
                        }
        }

        $this->render('update',array(
            'model'=>$model,
        ));
    }

    /**
     * Deletes a particular model.
     * If deletion is successful, the browser will be redirected to the 'admin' page.
     * @param integer $id the ID of the model to be deleted
     */
    public function actionDelete($id)
    {
        $this->loadModel($id)->delete();

        // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
        if(!isset($_GET['ajax']))
            $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
    }

    /**
     * Lists all models.
     */
    public function actionIndex()
    {
        $dataProvider=new CActiveDataProvider('User');
        $this->render('index',array(
            'dataProvider'=>$dataProvider,
        ));
    }

    /**
     * Manages all models.
     */
    public function actionAdmin()
    {
        $model=new User('search');
        $model->unsetAttributes();  // clear any default values
        if(isset($_GET['User']))
            $model->attributes=$_GET['User'];

        $this->render('admin',array(
            'model'=>$model,
        ));
    }

    /**
     * Returns the data model based on the primary key given in the GET variable.
     * If the data model is not found, an HTTP exception will be raised.
     * @param integer the ID of the model to be loaded
     */
    public function loadModel($id)
    {
        $model=User::model()->findByPk($id);
        if($model===null)
            throw new CHttpException(404,'The requested page does not exist.');
        return $model;
    }

    /**
     * Performs the AJAX validation.
     * @param CModel the model to be validated
     */
    protected function performAjaxValidation($model)
    {
        if(isset($_POST['ajax']) && $_POST['ajax']==='user-form')
        {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }
}