<?php
namespace Longman\TelegramBot\Commands\AdminCommands;

....

class AnswerCommand extends AdminCommand
{
    protected $name = 'answer';
    protected $description = 'Answer feedback';
    protected $usage = '/answer';
    protected $version = '1.0.0';
    protected $need_mysql = true;
    protected $private_only = false;
    protected $conversation;

    /**
     * @param $id
     * @return bool
     */
    public static function getFeedback($id) {
        $pdo = DB::getPdo();

        $stmt = $pdo->prepare("SELECT * FROM `feedback` WHERE `id` = :id");
        $stmt->execute([
            'id' => $id
        ]);

        return ($stmt->rowCount() == 0 ? false : true);
    }

    /**
     * @return \Longman\TelegramBot\Entities\ServerResponse
     * @throws \Longman\TelegramBot\Exception\TelegramException
     */
    public function execute()
    {
        $message = $this->getMessage();

        $chat    = $message->getChat();
        $chat_id = $message->getChat()->getId();
        $command = $message->getCommand();
        $from = $message->getFrom();
        $user_id = $from->getId();
        $text    = trim($message->getText(true));

        $pdo = DB::getPdo();

        $update = json_decode($this->update->toJson(), true);

        if ($command !== 'answer') {
            $id = substr($command, 6);
        }

        $data = [
            'chat_id' => $chat_id,
            'reply_markup' => Keyboard::remove([]),
            'parse_mode' => 'Markdown'
        ];

        /**
         * Если не в чате
         */
        if ($chat_id !== -1001250405637) {
            $data['text'] = 'Hmm...';

            return Request::sendMessage($data);
        }

        if (self::getFeedback($id) == false) {
            $data['text'] = "ID of feedback not found.";
            $data['reply_to_message_id'] = $message->getMessageId();

            return Request::sendMessage($data);
        }

        $getQuestion = $pdo->prepare("SELECT * FROM `feedback` WHERE `id` = :id");
        $getQuestion->execute([
            'id' => $id,
        ]);
        $question = $getQuestion->fetch();

        $this->conversation = new Conversation($from->getIsBot() ? $chat_id : $user_id, $chat_id, $this->getName());

        $notes = &$this->conversation->notes;
        !is_array($notes) && $notes = [];

        $state = 0;
        if (isset($notes['state'])) {
            $state = $notes['state'];
        }

        $result = Request::emptyResponse();

        switch ($state) {
            case 0:
                if ($text === '') {
                    $notes['state'] = 0;
                    $this->conversation->update();

                    $data['text'] = "*Write your answer to user.*";

                    if ($text !== '') {
                        $data['text'] = "*Write your answer to user.*";
                    }

                    $result = Request::sendMessage($data);
                    break;
                }

                $notes['answer'] = $text;
                $text          = '';

            case 1:
                $this->conversation->update();
                unset($notes['state']);

                $data['text'] = "✅ Message sent successfully";

                /**
                 * Sending answer to usee
                 */
                $answer = "📫 *Message from admin*\n\n" .
                    "{$notes['answer']}";

                Request::sendMessage([
                    'chat_id' => $question['user_id'],
                    'text' => $answer,
                    'parse_mode' => 'Markdown',
                ]);

                $stmt = $pdo->prepare("UPDATE `feedback` SET `answer` = :answer WHERE `id` = :id");
                $stmt->execute([
                    'answer' => $notes['answer'],
                    'id' => $question['id']
                ]);

                $result = Request::sendMessage($data);
                $this->conversation->stop();

                break;
        }

        return $result;
    }
}