<?php

namespace IPv4Bundle\Services;

use Doctrine\ORM\EntityManager;
use Doctrine\ORM\EntityRepository;
use HostBundle\Entity\HostType;
use IPv4Bundle\Entity\Pool;
use KeaBundle\Entity\Lease4;

class PoolService
{
    
    /**
     * @var EntityRepository
     */
    private $poolRepository;
    
    
    /**
     * @param EntityManager $em
     */
    public function __construct(EntityManager $em)
    {
        $this->poolRepository = $em->getRepository(Pool::class);
    }
        
    /**
     * Retorna el primer pool donde se encuentra el lease
     *
     * @param Lease4 $lease
     *
     * @return Pool
     */
    public function getPoolFromLease(Lease4 $lease)
    {
        $address = ip2long($lease->getAddress());
        $pools = $this->poolRepository->findAll();
        foreach ($pools as $pool) {
            $firstIp = ip2long($pool->getFirstIp());
            $lastIp =  ip2long($pool->getLastIp());
            
            if ($firstIp <= $address && $address <= $lastIp) {
                return $pool;
            }
        }
        
        return null;
    }
    
    
    /**
     * Retorna el primer pool donde se encuentra la $fixedIP
     *
     * @param string $fixedIP
     *
     * @return Pool
     */
    public function getPoolFromFixedIP($fixedIP)
    {
        $address = ip2long($fixedIP);
        $pools = $this->poolRepository->findAll();
        foreach ($pools as $pool) {
            $firstIp = ip2long($pool->getFirstIp());
            $lastIp =  ip2long($pool->getLastIp());
            
            if ($firstIp <= $address && $address <= $lastIp) {
                return $pool;
            }
        }
        
        return null;
    }
    
    /**
     * @param HostType $hostType
     *
     * @return array
     */
    public function getStaticPoolIPRange(HostType $hostType = null)
    {
        $count = 1;
        $range = [];
        $pools = $this->poolRepository->findAllStaticByHostType($hostType);
        foreach ($pools as $pool) {
            $range[] = $pool->getFirstIp();
            $firstIp = ip2long($pool->getFirstIp());
            $lastIp =  ip2long($pool->getLastIp());
            $currentIP = $firstIp + 1;
            while ($currentIP <= $lastIp) {
                $range[] = long2ip($currentIP);
                $currentIP++;
            }
        }
        sort($range);
        
        return $range;
    }
    
}