<?php


namespace MGModule\DNSManager2\mgLibs\custom\task;

use MGModule\DNSManager2\mgLibs\custom\manager\LogHelper;
use MGModule\DNSManager2\models\custom\task\TaskStatusEnum;
use MGModule\DNSManager2\models\custom\zone\Repository;

class RecordSynchronization extends TaskAbstract
{

    public function mainDescription()
    {
        return 'Record Synchronization';
    }

    /**
     * @param $params
     */
    public function syncAdd($params)
    {
        $zone = $this->getZone($params);

        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $this->loopThroughServers($zone, $params['submodule'], false, function ($module, $masterRecords) use ($params)
        {
            $module->addRecord($params['values'][0]);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);
    }

    /**
     * @param $params
     */
    public function syncDelete($params)
    {
        $zone = $this->getZone($params);

        $this->setStatus(TaskStatusEnum::IN_PROGRESS);

        $this->loopThroughServers($zone, $params['submodule'], true, function ($module, $masterRecords)
        {
            $this->syncRecords($module, $masterRecords);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    /**
     * @param $params
     */
    public function syncEdit($params)
    {
        $zone = $this->getZone($params);

        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $this->loopThroughServers($zone, $params['submodule'], true, function ($module, $masterRecords)
        {
            $this->syncRecords($module, $masterRecords);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    public function syncActivateZone($params)
    {
        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $zone = $this->getZone($params);
        $this->loopThroughServers($zone, $params['submodule'], true, function ($module, $masterRecords)
        {
            $module->activateZone();
            $module->wipeRecords();
            $this->syncRecords($module, $masterRecords);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    public function syncTerminateZone($params)
    {
        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $this->loopThroughServers($params['zone'], $params['submodule'], false, function ($module, $masterRecords)
        {
            $module->terminateZone();
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    public function syncUpdateRDNS($params)
    {
        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $this->loopThroughServers($params['zone'], $params['submodule'], true, function ($module, $masterRecords)
        {
            $this->syncRecords($module, $masterRecords);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    public function syncRemoveRDNS($params)
    {
        $this->setStatus(TaskStatusEnum::IN_PROGRESS);
        $this->loopThroughServers($params['zone'], $params['submodule'], true, function ($module, $masterRecords)
        {
            $this->syncRecords($module, $masterRecords);
        });
        $this->setStatus(TaskStatusEnum::FINISHED);

    }

    protected function getZone($params)
    {
        $submodule      = $params['submodule'];
        $zoneRepository = Repository::factory();
        return $zoneRepository->byServerID($submodule->getServer()->id)->byName($submodule->getDomain())->get()[0];
    }

    /**
     * @param $zone
     * @param $submodule
     * @param $withRecords
     * @param callable $callable
     */
    private function loopThroughServers($zone, $submodule, $withRecords, callable $callable)
    {
        [$master, $slaves] = $this->getServers($zone);
        $masterRecords = [];

        if ($withRecords)
        {
            $masterModule = $master->getServer()->getModule();
            $masterModule->setDomain($submodule->getDomain());
            $masterRecords = $masterModule->getRecords();
        }

        foreach ($slaves as $slaveServer)
        {
            try
            {
                $module = $slaveServer->getServer()->getModule();
                $module->setDomain($submodule->getDomain());

                $callable($module, $masterRecords);
            }
            catch (\Exception $ex)
            {
//                var_dump($ex->getMessage());
                LogHelper::addFailLogUsingZone('record_sync_on_' . $submodule->getDomain(), $ex->getMessage(), $zone);
            }
        }
    }

    /**
     * @param $zone
     * @return array
     */
    private function getServers($zone)
    {
        $package = $zone->getPackage();
        $master  = null;
        $slaves  = [];

        foreach ($package->getServers() as $server)
        {
            if ($server->isMaster())
            {
                $master = $server;
            }
            else
            {
                $slaves[] = $server;
            }
        }

        return [
            $master,
            $slaves
        ];
    }


    /**
     * @param $module
     * @param array $masterRecords
     */
    protected function syncRecords($module, $masterRecords = [])
    {
        $slaveRecords = $module->getRecords();
        $domain       = $module->getSubmodule()->getModule()->getDomain();

        /**
         * Add record which does not exist in slave
         */
        foreach ($masterRecords as $masterRecord)
        {
            if (in_array($masterRecord->type, ['SOA']))
            {
                continue;
            }
            $found = false;

            foreach ($slaveRecords as $slaveRecord)
            {
                if ($masterRecord->compare($slaveRecord, $domain))
                {
                    $found = true;

                    continue;
                }
            }

            if (!$found)
            {
                $masterRecord->ttl = $masterRecord->ttl ?: 3600;
//                echo "\n================ ADD RECORD ===================\n";
//                print_r($masterRecord);

                try
                {
                    $module->addRecord($masterRecord);
                }
                catch (\Exception $e)
                {
                    echo $e->getMessage() . "\n";
                }
            }
        }

        /**
         * Delete record from slave which does not exist in master
         */
        foreach ($slaveRecords as $slaveRecord)
        {
            if (in_array($slaveRecord->type, ['SOA']))
            {
                continue;
            }

            $found = false;

            foreach ($masterRecords as $masterRecord)
            {
                if ($slaveRecord->compare($masterRecord, $domain))
                {
                    $found = true;

                    continue;
                }
            }

            if (!$found)
            {
//                echo "\n================ DELETE RECORD ===================\n";
//                print_r($slaveRecord);
                try
                {
                    $module->deleteRecord($slaveRecord);
                }
                catch (\Exception $e)
                {
                    echo $e->getMessage() . "\n";
                }
            }
        }
    }
}