<?php
/**
 * This file is part of the SplendidBear Websites' projects.
 *
 * Copyright (c) 2019 @ www.splendidbear.org
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace App\Util;

use App\Entity\Grid;
use App\Entity\GridRow;
use App\Entity\PlayedGame;
use App\Util\Interfaces\RpcManagerInterface;
use DateTime;
use Doctrine\ORM\EntityManager;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\ORMException;
use Exception;
use Psr\Log\LoggerInterface;

/**
 * Class RpcManager
 *
 * @package App\Utils
 * @author  system7 <https://www.splendidbear.org>
 */
class RpcManager extends WebsocketManager implements RpcManagerInterface
{
    /** @var EntityManager $em */
    protected $entityManager;

    /** @var LoggerInterface $logger */
    private $logger;

    /**
     * MineseekerRpc constructor.
     *
     * @param EntityManagerInterface $entityManager
     * @param LoggerInterface        $logger
     */
    public function __construct(EntityManagerInterface $entityManager, LoggerInterface $logger)
    {
        $this->entityManager = $this->reConnect($entityManager);
        $this->logger = $logger;

        parent::__construct($logger);
    }

    /**
     * {@inheritDoc}
     */
    public function getConnectInformation($params): string
    {
        $gameAssoc = is_array($params) ? $params[0] : $params;
        $grid = $this->getGrid($gameAssoc);
        $users = null !== $grid ? $this->getUsers($gameAssoc) : null;

        return base64_encode(json_encode(array(
            'grid' => $grid,
            'users' => $users
        ), JSON_THROW_ON_ERROR, 512));
    }

    /**
     * {@inheritDoc}
     */
    public function saveGrid($data): bool
    {
        $playedGame = new PlayedGame();
        $grid = new Grid();
        $rows = json_decode(base64_decode($data[0]), true, 512, JSON_THROW_ON_ERROR);

        try {
            foreach ($rows as $row) {
                $gridRow = new GridRow();

                $gridRow->setGridCol($row);

                /** Save Row */
                $gridRow->setGrid($grid);
                $this->entityManager->persist($gridRow);

            }

            /** Save Grid */
            $grid->setPlayedGame($playedGame);
            $this->entityManager->persist($grid);

            /** Save PlayedGame */
            $playedGame->setGameAssoc($data[1]);
            $playedGame->setGrid($grid);
            $playedGame->setCreated(new DateTime());
            $playedGame->setUpdated(new DateTime());
            $this->entityManager->persist($playedGame);

            $this->entityManager->flush();
        } catch (ORMException $e) {
            $this->logger->error($e->getMessage());
        } catch (Exception $e) {
            $this->logger->error($e->getMessage());
        }

        return true;
    }

    /**
     * It gets the current Grid by PlayedGame/gameAssoc
     *
     * @param $gameAssoc
     *
     * @return array
     */
    private function getGrid($gameAssoc): ?array
    {
        $gridCols = array();

        try {
            $this->entityManager->clear();

            /** @var PlayedGame $playedGame */
            $playedGame = $this->entityManager
                ->getRepository(PlayedGame::class)
                ->findOneByGameAssoc($gameAssoc);

            if (null === $playedGame) {
                return null;
            }

            if (null === $rows = $playedGame->getGrid()) {
                return null;
            }

            $rows = $rows->getGridRow();

            /** @var GridRow $row */
            foreach ($rows as $row) {
                $gridCols[] = $row->getGridCol();
            }

            return $gridCols;
        } catch (Exception $e) {
            $this->logger->error($e->getMessage());
        }

        return null;
    }

    /**
     * Get the Users by PlayedGame
     *
     * @param $gameAssoc
     *
     * @return array
     */
    private function getUsers($gameAssoc): array
    {
        return $this->getUserCollection(
            $this->entityManager
                ->getRepository(PlayedGame::class)
                ->findOneByGameAssoc($gameAssoc)
        );
    }

    /**
     * Get user collection from PlayedGame entity
     *
     * @param PlayedGame $playedGame
     *
     * @return array
     */
    private function getUserCollection(PlayedGame $playedGame): array
    {
        return array(
            'red' => null !== $playedGame->getRed() ? $playedGame->getRed()->getUsername() : '',
            'blue' => null !== $playedGame->getBlue() ? $playedGame->getBlue()->getUsername() : '',
            'redAnon' => null !== $playedGame->getRedAnon() ? $playedGame->getRedAnon()->getUserName() : '',
            'blueAnon' => null !== $playedGame->getBlueAnon() ? $playedGame->getBlueAnon()->getUserName() : ''
        );
    }
}