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Conversation.php
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Conversation.php
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<?php
/**
* This file is part of the TelegramBot package.
*
* (c) Avtandil Kikabidze aka LONGMAN <akalongman@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Longman\TelegramBot;
use Longman\TelegramBot\Command;
use Longman\TelegramBot\Request;
use Longman\TelegramBot\ConversationDB;
use Longman\TelegramBot\Entities\Update;
/**
* Class Conversation
*/
class Conversation
{
/**
* Conversation has been fetched true false
*
* @var bool
*/
protected $is_fetched = false;
/**
* All information fetched from the database
*
* @var array
*/
protected $conversation = null;
/**
* Data stored inside the Conversation
*
* @var array
*/
protected $data = null;
/**
* Telegram user id
*
* @var int
*/
protected $user_id;
/**
* Telegram chat_id
*
* @var int
*/
protected $chat_id;
/**
* Group name let you share the session among commands
* Call this as the same name of the command if you don't need to share the conversation
*
* @var strint
*/
protected $group_name;
/**
* Command to be execute if the conversation is active
*
* @var string
*/
protected $command;
/**
* Conversation contructor initialize a new conversation
*
* @param int $user_id
* @param int $chat_id
* @param string $name
* @param string $command
*/
public function __construct($user_id, $chat_id, $group_name = null, $command = null)
{
if (is_null($command)) {
$command = $group_name;
}
$this->user_id = $user_id;
$this->chat_id = $chat_id;
$this->command = $command;
$this->group_name = $group_name;
}
/**
* Check if the conversation already exist
*
* @return bool
*/
protected function conversationExist()
{
//Conversation info already fetched
if ($this->is_fetched) {
return true;
}
//select an active conversation
$conversation = ConversationDB::selectConversation($this->user_id, $this->chat_id, 1);
$this->is_fetched = true;
if (isset($conversation[0])) {
//Pick only the first element
$this->conversation = $conversation[0];
if (is_null($this->group_name)) {
//Conversation name and command has not been specified. command has to be retrieved
return true;
}
//a track with the same name was already opened, store the data inside the class
if ($this->conversation['conversation_name'] == $this->group_name) {
$this->data = json_decode($this->conversation['data'], true);
return true;
}
//a conversation with a differet name has been opened unsetting the DB one and reacreatea a new one
ConversationDB::updateConversation(['status' => 'cancelled'], ['chat_id' => $this->chat_id, 'user_id' => $this->user_id, 'status' => 'active']);
return false;
}
$this->conversation = null;
return false;
}
/**
* Check if the Conversation already exist
*
* Check if a conversation has already been created in the database. If the conversation is not found, a new conversation is created. start fetch the data stored in the database
*
* @return bool
*/
public function start()
{
if (!$this->conversationExist()) {
$status = ConversationDB::insertConversation($this->command, $this->group_name, $this->user_id, $this->chat_id);
$this->is_fetched = true;
}
return true;
}
/**
* Store the array/variable in the database with json_encode() function
*
* @param array $data
*/
public function update($data)
{
//conversation must exist!
if ($this->conversationExist()) {
$fields['data'] = json_encode($data);
ConversationDB::updateConversation($fields, ['chat_id' => $this->chat_id, 'user_id' => $this->user_id, 'status' => 'active']);
//TODO verify query success before convert the private var
$this->data = $data;
}
}
/**
* Delete the conversation from the database
*
* Currently the Convevrsation is not deleted but just unsetted
*
* @TODO should return something
*
* @param array $data
*/
public function stop()
{
if ($this->conversationExist()) {
ConversationDB::updateConversation(['status' => 'stopped'], ['chat_id' => $this->chat_id, 'user_id' => $this->user_id, 'status' => 'active']);
}
}
/**
* Retrieve the command to execute from the conversation
*
* @param string
*/
public function getConversationCommand()
{
if ($this->conversationExist()) {
return $this->conversation['conversation_command'];
}
return null;
}
/**
* Retrive the data store in the conversation
*
* @param array $data
*/
public function getData()
{
return $this->data;
}
}

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