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<?php
class Bot {
protected $key = null;
protected $session = null;
private $salt = 'some very-very long string without any non-latin characters due to different string representations inside of variable programming languages';
/**
* @param $key - The session key of the row address.
*/
public function __construct($key) {
$this->key = $key;
}
/**
* The function of creating the session.
* @param $session - Session ID.
* @return string - The ID of the current session.
*/
public function session($session = null) {
if ($session === null) {
$response = file_get_contents('http://iii.ru/api/2.0/json/Chat.init/'.$this->key.'/');
$this->session = $this->decode($response)->result->cuid;
} else {
$this->session = $session;
}
// We issue results
return $this->session;
}
/**
* Function send a message to the bot.
* @param $message - Message text.
* @return string - Returns a response from a bot.
*/
public function say($message) {
$request = '["'.$this->session.'","'.$message.'"]';
$myCurl = curl_init();
curl_setopt_array($myCurl, array(
CURLOPT_URL => 'http://iii.ru/api/2.0/json/Chat.request',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $this->encode($request)
));
$response = curl_exec($myCurl);
curl_close($myCurl);
// We issue results
return $this->decode($response)->result->text->tts;
}
/**
* Encode message before sending it.
* @param $message - The response from the bot.
* @return string - A coded message.
*/
private function encode($message) {
$message = base64_encode($message);
$ml = strlen($message);
$kl = strlen($this->salt);
for ($i = 0; $i < $ml; $i++) {
$encoded = $encoded . ($message[$i] ^ $this->salt[$i % $kl]);
}
// We issue results
return base64_encode($encoded);
}
/**
* The function of decoding the received message.
* @param $message - The response from the bot.
* @return mixed|null
*/
private function decode($message) {
$msg = base64_decode($message);
$ml = strlen($msg);
$kl = strlen($this->salt);
for ($i = 0; $i < $ml; $i++) {
$decoded.= ($msg[$i] ^ $this->salt[$i % $kl]);
}
// We issue results
return json_decode(base64_decode($decoded));
}
}
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