<?php
namespace common\manager;
use common\models\Card;
use common\models\Customer;
use common\models\Event;
use common\models\EventRegistration;
use common\models\Ticket;
use yii\db\Query;
use yii\web\BadRequestHttpException;
use yii\web\NotFoundHttpException;
use yii\web\ServerErrorHttpException;

/**
 * Created by IntelliJ IDEA.
 * User: rocho
 * Date: 2018.12.17.
 * Time: 6:12
 */

class EventRegistrationManager extends \yii\base\Object
{
    const CARD_NOT_FOUND = 1;
    const CUSTOMER_NOT_FOUND = 2;
    const TICKET_NOT_FOUND = 3;
    const NO_FREE_SEATS = 4;
    const EVENT_TYPE_NOT_FOUND = 5;
    const TICKET_INSUFFICIENT = 6;
    const UNKNOWN_ERROR = 7;
    const MAX_SEAT_COUNT_EXCEEDED = 8;

     public static  $STATES = [
         self::CARD_NOT_FOUND => "CARD_NOT_FOUND",
        self::CUSTOMER_NOT_FOUND => "CUSTOMER_NOT_FOUND",
        self::TICKET_NOT_FOUND => "TICKET_NOT_FOUND",
        self::NO_FREE_SEATS => "NO_FREE_SEATS",
        self::EVENT_TYPE_NOT_FOUND => "EVENT_TYPE_NOT_FOUND",
        self::TICKET_INSUFFICIENT => "TICKET_INSUFFICIENT",
        self::UNKNOWN_ERROR => "UNKNOWN_ERROR",
        self::MAX_SEAT_COUNT_EXCEEDED => "MAX_SEAT_COUNT_EXCEEDED",


    ];

    /**
     * @param \common\models\CardEventRegistrationForm $cardEventForm
     * @throws NotFoundHttpException
     * @throws BadRequestHttpException
     * @throws ServerErrorHttpException
     * @throws \yii\web\HttpException
     */
    public function registerCard($cardEventForm){

        if ( $cardEventForm->validate() ){

            /** @var \common\models\Card $card */
            $card = Card::readCard($cardEventForm->card_number,false);
            if ( !isset($card )){
                throw new NotFoundHttpException("Card not found: " . $cardEventForm->card_number,self::CARD_NOT_FOUND);
            }

            if ( $card->isFree() ){
                throw new NotFoundHttpException("Customer not found", self::CUSTOMER_NOT_FOUND);
            }

            $activeTickets = $card->getActiveTickets();
            if ( sizeof($activeTickets) == 0 ){
                throw new NotFoundHttpException("Ticket not found", self::TICKET_NOT_FOUND);
            }

            /** @var \common\models\Event $event */
            $event = Event::find()->andWhere(['id' => $cardEventForm->event_id])->one();
            if ( !isset($event)){
                throw new NotFoundHttpException("Event not found: " . $cardEventForm->event_id);
            }

            if ( !$event->hasFreeSeats() ){
                throw new BadRequestHttpException("No free seats", self::NO_FREE_SEATS);
            }

            $eventType = $event->eventType;

            if ( !isset($eventType)  ){
                throw new ServerErrorHttpException("Event type not found", self::EVENT_TYPE_NOT_FOUND);
            }

            $selectedTicket = $eventType->findTicketAllowingEventType($activeTickets);


            if ( !isset($selectedTicket)  ){
                throw new NotFoundHttpException("Ticket not found", self::TICKET_INSUFFICIENT);
            }

            if ( $selectedTicket->hasOpenReservationCount() ){
                $selectedTicket->consumeReservationCount(1);
            }
            $selectedTicket->save();

            $registration = new EventRegistration();
            $registration->id_event = $event->id;
            $registration->id_card = $card->id_card;
            $registration->id_ticket = $selectedTicket->id_ticket;
            try{
                $registration->save(false);
            }catch (\Throwable $exception){
                throw new ServerErrorHttpException("Failed to save", self::UNKNOWN_ERROR);
            }

            $cardEventForm->registration = $registration;
        }

    }

    public function createFindRegistrationsQuery($idEvent){
        $query = new Query();
        $query->select([
            "event_registration.id as event_registration_id",
            "event_registration.created_at as event_registration_created_at",
            "event_registration.canceled_at as event_registration_canceled_at",
            "card.number as card_number",
            "card.number as card_number",
            "customer.name as customer_name",
            "customer.email as customer_email",
        ]);
        $query->from(EventRegistration::tableName());
        $query->innerJoin(Event::tableName(), "event_registration.id_event = event.id");
        $query->innerJoin(Card::tableName(), "event_registration.id_card = card.id_card");
        $query->innerJoin(Customer::tableName(), "customer.id_customer_card = card.id_card");
        $query->andWhere(["event_registration.id_event" => $idEvent ]);

        return $query;
    }


    /**
     * @param $idRegistration
     * @return array|EventRegistration|\yii\db\ActiveRecord|null
     * @throws NotFoundHttpException
     */
    public function loadRegistration($idRegistration) {

        $registration = EventRegistration::find()->andWhere(['id' => $idRegistration ])->one();
        if ($registration == null) {
            throw new NotFoundHttpException('The requested registration does not exist.');
        }
        return $registration;
    }

    /**
     * @param \common\models\EventRegistration $registration
     * @throws ServerErrorHttpException
     */
    public function cancelRegistration($registration){
        if ( isset($registration->canceled_at)){
            throw new ServerErrorHttpException('The registration is already canceled');
        }

        $ticket = Ticket::findOne(['id' => $registration->id_ticket ]);

        $ticket->restoreReservationCount(1);
        $ticket->save(false);

        $registration->canceled_at = date('Y-m-d H:i:s' );
        $registration->save(false);

    }


}