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MessengerBot.php
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MessengerBot.php
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<?php
class MessengerBot {
private $answers = [];
public $sender;
public $input;
function __construct ()
{
}
function response()
{
$hubVerifyToken = Gila::option('fb-messenger-bot.verifyToken');
$accessToken = Gila::option('fb-messenger-bot.accessToken');
if ($_REQUEST['hub_verify_token'] === $hubVerifyToken) {
echo $_REQUEST['hub_challenge'];
exit;
}
$input = json_decode(file_get_contents('php://input'), true);
file_put_contents('log/fb/'.date("Y-m-d H:i:s").'.json', json_encode($input, JSON_PRETTY_PRINT));
$this->input = $input;
$this->sender = $input['entry'][0]['messaging'][0]['sender'];
$senderId = $this->sender['id'];
$messageText = $input['entry'][0]['messaging'][0]['message']['text'];
$response = null;
if(Gila::option('fb-messenger-bot.log',0)==1) {
$logger = new logger('fb-messenges.log');
$logger->log($senderId, $messageText);
}
if($answer = $this->getAnswer($messageText)) {
if(is_string($answer)) {
$answer = [ 'text' => $answer ];
}
$response = [
'recipient' => [ 'id' => $senderId ],
'message' => $answer
];
$ch = curl_init('https://graph.facebook.com/v2.6/me/messages?access_token='.$accessToken);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($response));
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
if(!empty($input)){
$result = curl_exec($ch);
}
curl_close($ch);
}
}
function getAnswer($string)
{
foreach ($this->answers as $ans) {
if (preg_match_all('#^' . $ans['pattern'] . '$#', $string, $matches, PREG_OFFSET_CAPTURE)) {
$matches = array_slice($matches, 1);
$vars = array_map(function ($match, $i) use ($matches) {
if (isset($matches[$i + 1]) && isset($matches[$i + 1][0]) && is_array($matches[$i + 1][0])) {
return trim(substr($match[0][0], 0, $matches[$i + 1][0][1] - $match[0][1]), '/');
}
return isset($match[0][0]) ? trim($match[0][0], '/') : null;
}, $matches, array_keys($matches));
if (is_callable($ans['fn'])) {
return call_user_func_array($ans['fn'], $vars);
}
}
}
}
function listen($pattern, $fn) {
$this->answers[] = ['pattern'=>$pattern, 'fn'=>$fn];
}
}