<?php

declare(strict_types=1);

namespace VK\API;

class LongPoll extends LongPollAbstract
{
    /**
     * Объект взаимодействия лонгпола
     * 
     * @var object
     */
    private $robot;

    /**
     * Тип объекта: пользователь или группа
     * 
     * @var string
     */
    private $auth_type;

    /**
     * Ключ сессии
     * 
     * @var string
     */
    private $key;

    /**
     * @var int
     */
    private $user_id;

    /**
     * @var int
     */
    private $group_id;

    /**
     * @var int
     */
    private $ts;

    /**
     * @var string
     */
    private $server;
    
    public function __construct(object $robot, array $params = [])
    {
        $this->robot = $robot; 
        if ($_ENV['ROBOT_TYPE']) {
            $this->robot->auth_type = 'user';
            $this->user_id = $this->robot->request('users.get', [])['id'];
        } else {
            $this->robot->auth_type = 'group';
            $this->group_id = $this->robot->request('groups.getById', [])['id'];
            $this->robot->request('groups.setLongPollSettings', [
                'group_id' => $this->group_id,
                'enabled' => 1,
                'api_version' => $this->robot->version,
                'message_new' => 1,
            ]);
        }
        $this->getLongPollServer();
    }
    
    public function getLongPollServer()
    {
        if ($this->robot->auth_type == 'user') {
            $data = $this->robot->request('messages.getLongPollServer', ['need_pts' => 1, 'lp_version' => 3]);
        } else {
            $data = $this->robot->request('groups.getLongPollServer', ['group_id' => $this->group_id]);
        }
        unset($this->key, $this->server, $this->ts);
        list($this->key, $this->server, $this->ts) = [$data['key'], $data['server'], $data['ts']];
    }
}