<?php
declare(strict_types=1);

namespace HttpServer\Service\Abstracts;


use Exception;
use ReflectionException;
use Snowflake\Application;
use Snowflake\Exception\NotFindClassException;
use Snowflake\Snowflake;


/**
 * Trait Server
 * @package HttpServer\Service\Abstracts
 */
trait Server
{

    public ?Application $application = null;


    /**
     * Server constructor.
     * @param $host
     * @param null $port
     * @param null $mode
     * @param null $sock_type
     */
    public function __construct($host, $port = null, $mode = null, $sock_type = null)
    {
        parent::__construct($host, $port, $mode, $sock_type);
    }


    /**
     * @param array $settings
     */
    public function set(array $settings)
    {
        parent::set($settings); // TODO: Change the autogenerated stub
        $this->onInit();
    }


    /**
     * @return void
     * @throws NotFindClassException
     * @throws ReflectionException
     */
    public function onHandlerListener(): void
    {
        $this->on('Shutdown', $this->createHandler('shutdown'));
        $this->on('Start', $this->createHandler('start'));
        if ($this->setting['task_worker_num'] ?? 0 > 0) {
            $this->on('Finish', $this->createHandler('finish'));
            $this->on('Task', $this->createHandler('task'));
        }
        $this->onManager();
    }


    /**
     * @throws \ReflectionException
     * @throws \Snowflake\Exception\NotFindClassException
     */
    private function onManager()
    {
        $this->on('ManagerStart', $this->createHandler('managerStart'));
        $this->on('ManagerStop', $this->createHandler('managerStop'));

        $this->onWorker();
        $this->onOther();
    }


    /**
     * @throws \ReflectionException
     * @throws \Snowflake\Exception\NotFindClassException
     */
    private function onWorker()
    {
        $this->on('WorkerStop', $this->createHandler('workerStop'));
        $this->on('WorkerExit', $this->createHandler('workerExit'));
        $this->on('WorkerStart', $this->createHandler('workerStart'));
        $this->on('WorkerError', $this->createHandler('workerError'));
    }


    /**
     * @throws \ReflectionException
     * @throws \Snowflake\Exception\NotFindClassException
     */
    private function onOther()
    {
        $this->on('PipeMessage', $this->createHandler('pipeMessage'));
        $this->on('BeforeReload', $this->createHandler('BeforeReload'));
        $this->on('AfterReload', $this->createHandler('AfterReload'));
    }


    /**
     * @param $eventName
     * @return array
     * @throws NotFindClassException
     * @throws ReflectionException
     * @throws Exception
     */
    protected function createHandler($eventName): array
    {
        $classPrefix = 'HttpServer\Events\On' . ucfirst($eventName);
        if (!class_exists($classPrefix)) {
            throw new Exception('class not found.');
        }

        $class = Snowflake::createObject($classPrefix, [Snowflake::app()]);
        return [$class, 'onHandler'];
    }


}