<?php

namespace common\modules\event\controllers;

use common\manager\EventRegistrationManager;
use common\models\CardEventRegistrationForm;
use common\modules\event\EventModule;
use common\modules\event\models\EventPermissions;
use Yii;
use common\models\Event;
use backend\models\EventSearch;
use yii\data\ActiveDataProvider;
use yii\web\Controller;
use yii\web\HttpException;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;

/**
 * EventController implements the CRUD actions for Event model.
 */
class EventController extends Controller
{
    public function behaviors()
    {
        $behaviors =  [
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'delete' => ['post'],
                ],
            ],
        ];

        $module = EventModule::getInstance();
        $allowedActions = [ 'index','view', 'reserve-card','cancel-registration','delete-registration' ];
        if ( $module->mode == 'admin' ){
            $allowedActions[] = 'create';
            $allowedActions[] = 'update';
            $allowedActions[] = 'delete';
        }
        $behaviors['access'] = [
                'class' => \yii\filters\AccessControl::className(),
                'rules' => [
                    // allow authenticated users
                    [
                        'actions' =>$allowedActions,
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                    // everything else is denied
                ],
            ];

        return $behaviors;
    }

    /**
     * Lists all Event models.
     * @return mixed
     */
    public function actionIndex()
    {
        $searchModel = new EventSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

        $permissions = new EventPermissions();

        return $this->render('index', [
            'searchModel' => $searchModel,
            'dataProvider' => $dataProvider,
            'permissions' => $permissions
        ]);
    }

    /**
     * Displays a single Event model.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException
     */
    public function actionView($id)
    {
        $eventRegistrationManager = new EventRegistrationManager();


        $dataProvider = new ActiveDataProvider([
            'query' => $eventRegistrationManager->createFindRegistrationsQuery($id),
            ]
        );
        return $this->render('view', [
            'model' => $this->findModel($id),
            'dataProvider' => $dataProvider,
            'permissions' => new EventPermissions()
        ]);
    }

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

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
        }
    }

    /**
     * Updates an existing Event model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('update', [
                'model' => $model,
            ]);
        }
    }

    /**
     * Deletes an existing Event model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException
     * @throws \yii\db\Exception
     */
    public function actionDelete($id)
    {
        $manager = new EventRegistrationManager();
        $manager->deleteEvent($this->findModel($id));
        return $this->redirect(['index']);
    }


    /**
     * @param $id
     * @return \yii\web\Response
     * @throws \yii\db\Exception
     * @throws \Exception
     */
    public function actionCancelRegistration($id)
    {
        $eventRegistrationManager = new EventRegistrationManager();
        $db = \Yii::$app->db;
        $tx = $db->beginTransaction();
        try{
            $registration = $eventRegistrationManager->loadRegistration($id);
            $eventRegistrationManager->cancelRegistration($registration);
            $tx->commit();
            return $this->redirect(['view', 'id' => $registration->id_event]);
        }catch (\Exception $ex){
            $tx->rollBack();
            throw $ex;
        }
    }

    /**
     * @param $id
     * @return \yii\web\Response
     * @throws \yii\db\Exception
     * @throws \Exception
     */
    public function actionDeleteRegistration($id)
    {
        $eventRegistrationManager = new EventRegistrationManager();
        $db = \Yii::$app->db;
        $tx = $db->beginTransaction();
        try{
            $registration = $eventRegistrationManager->loadRegistration($id);
            $eventRegistrationManager->deleteRegistration($registration);
            $tx->commit();
            return $this->redirect(['view', 'id' => $registration->id_event]);
        }catch (\Exception $ex){
            $tx->rollBack();
            throw $ex;
        }
    }

    /**
     * @param $id
     * @return string|\yii\web\Response
     * @throws NotFoundHttpException
     * @throws \yii\db\Exception
     */
    public function actionReserveCard($id)
    {

        $event = $this->findModel($id);

        $model = new CardEventRegistrationForm();
        $model->event_id = $id;
        if ($model->load(Yii::$app->request->post())) {
            if ($model->validate()) {
                $manager = new EventRegistrationManager();
                try {
                    $manager->registerCard($model);
                } catch (HttpException $e) {
                    if (array_key_exists($e->getCode(), EventRegistrationManager::$STATES)) {
                        $model->addError("card_number", Yii::t('event-registration', EventRegistrationManager::$STATES[$e->getCode()]));
                    } else {
                        $model->addError("card_number", Yii::t('event-registration', "Unknown Error"));
                    }
                }
            }
            if ($model->hasErrors()) {
                return $this->render('register_card', [
                    'model' => $model,
                    'event' => $event,
                ]);
            } else {
                return $this->redirect(['view', 'id' => $id]);
            }
        }
        return $this->render('register_card', [
            'model' => $model,
            'event' => $event,
        ]);
    }

    /**
     * Finds the Event model based on its primary key value.
     * If the model is not found, a 404 HTTP exception will be thrown.
     * @param integer $id
     * @return Event the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel($id)
    {
        if (($model = Event::findOne($id)) !== null) {
            return $model;
        } else {
            throw new NotFoundHttpException('The requested page does not exist.');
        }
    }
}