class OurBot extends WolfDispatcher {

    const CHATS_LOG_PATH = 'exports/allchats.log';

    /**
     * Just reacts for user greeting personally
     * 
     * @return void
     */
    protected function actionHelloName() {
        $hisName = $this->receivedData['from']['first_name'];
        $this->reply(__('Hello') . ' ' . $hisName);
    }

    /**
     * Replies on photo posted in chat
     * 
     * @return void
     */
    protected function actionPhotoWow() {
        if ($this->isPhotoReceived()) {
            $message = $this->message(); //returns $this->receivedData copy
            if ($message['text']) {
                $replyText = 'Ого яка фотка! Це точно ' . $message['text'] . '?';
            } else {
                $replyText = 'Нічогенька така картинка';
            }
            $this->replyTo($replyText);
        }
    }

    /**
     * Just logs all chats non empty text messages to some log file
     * 
     * @return void
     */
    protected function handleAnyWay() {
        if (!empty($this->receivedData['text'])) {
            $logData = date("Y-m-d H:i:s", $this->receivedData['date']) . ' ' . $this->chatId . ' ';
            $logData .= $this->receivedData['from']['first_name'] . ' ' . $this->receivedData['text'] . PHP_EOL;
            file_put_contents(self::CHATS_LOG_PATH, $logData, FILE_APPEND);
        }
    }

}