├── README.md
└── door_chatbot.php


/README.md:
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1 | # Doorman script will send a chat message to a rocket chat channel when a door was opened
2 | by [Christian Haschek](https://blog.haschek.at)
3 | 
4 | ![The result](https://www.pictshare.net/a3939806c5.jpg)
5 | 
6 | ## How to install and use in 4 small steps
7 | 
8 | Checkout my post: https://blog.haschek.at/2016/my-door-sends-me-chat-messages.html


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/door_chatbot.php:
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  1 | <?php 
  2 | 
  3 | //Settings
  4 | define('ROCKETCHAT_URL','https://rocket.chat');
  5 | define('BOT_USERNAME','bot');
  6 | define('BOT_PASSWORD','secretbotpassword');
  7 | define('BOT_CHANNEL','GENERAL');
  8 | 
  9 | $laststate = 1;
 10 | $lastpost = 0;
 11 | $lastopen = 0;
 12 | $lastchange = 0;
 13 | 
 14 | while(1)
 15 | {
 16 |   //read the door status from the GPIO Pin 0
 17 |   $val = trim(@shell_exec("/usr/bin/gpio read 0"));
 18 |   if($val!=$laststate)
 19 |   {
 20 |     $laststate = $val;
 21 |     $lastpost = time();
 22 |     $status = ($val?'closed':'open');
 23 |     echo time().';'.$val.';'.$status."\n";
 24 | 
 25 |     if($val==1 && $lastopen!=0)
 26 |       $duration = time()-$lastopen;
 27 |     else
 28 |     {
 29 |         $duration = -1;
 30 |         if($lastchange!=0)
 31 |            $open = 'Last use: `'.translateSecondsToNiceString((time()-$lastchange)).'` ago.';
 32 |         else $open = '';
 33 |     }
 34 | 
 35 |     $message = ':door: is now *'.$status.'*. '.($duration!=-1?'Was open for `'.translateSecondsToNiceString($duration).'`.':$open);
 36 | 
 37 |     sendRocket($message);
 38 | 
 39 |      if($val==0)
 40 |        $lastopen = time();
 41 |      $lastchange = time();
 42 |   }
 43 | 
 44 |   //wait 1 second to check the door status again
 45 |   sleep(1);
 46 | }
 47 | 
 48 | 
 49 | function sendRocket($message)
 50 | {
 51 |     $login = makeRequest(ROCKETCHAT_URL.'/api/login',array('password' => BOT_PASSWORD, 'user' => BOT_USERNAME));
 52 |     $token = $login['data']['authToken'];
 53 |     $user = $login['data']['userId'];
 54 | 
 55 |     //join room
 56 |     makeRequest(ROCKETCHAT_URL.'/api/rooms/'.BOT_CHANNEL.'/join',array(),array('X-Auth-Token: '.$token,'X-User-Id: '.$user));
 57 | 
 58 |     //send message
 59 |     makeRequest(ROCKETCHAT_URL.'/api/rooms/'.BOT_CHANNEL.'/send',array('msg'=>$message),array('X-Auth-Token: '.$token,'X-User-Id: '.$user));
 60 | }
 61 | 
 62 | function makeRequest($url,$data,$headers=false,$post=true)
 63 | {
 64 |     $headers[] = 'Content-type: application/x-www-form-urlencoded';
 65 |     $options = array(
 66 |         'http' => array(
 67 |             'header'  => $headers,
 68 |             'method'  => $post?'POST':'GET',
 69 |             'content' => http_build_query($data)
 70 |         )
 71 |     );
 72 |     $context  = stream_context_create($options);
 73 |     $result = file_get_contents($url, false, $context);
 74 |     if ($result === FALSE) { /* Handle error */ }
 75 | 
 76 |     return json_decode($result,true);
 77 | }
 78 | 
 79 | function translateSecondsToNiceString($secs)
 80 | {
 81 |     $units = array(
 82 |             "year"   => 365*24*3600,
 83 |             "month"   => 30*24*3600,
 84 |             "week"   => 7*24*3600,
 85 |             "day"    =>   24*3600,
 86 |             "hour"   =>      3600,
 87 |             "minute" =>        60,
 88 |             "second" =>        1,
 89 |     );
 90 |     
 91 |     if ( $secs == 0 ) return "0 seconds";
 92 |     $s = "";
 93 |     foreach ( $units as $name => $divisor ) {
 94 |             if ( $quot = intval($secs / $divisor) ) {
 95 |                     $s .= "$quot $name";
 96 |                     $s .= (abs($quot) > 1 ? "s" : "") . ", ";
 97 |                     $secs -= $quot * $divisor;
 98 |             }
 99 |     }
100 |     return substr($s, 0, -2);
101 | }


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