New way for message forwarding. Improved scheduled listing

TODO

@@ -2,6 +2,15 @@
 =============
 * Document code
 	Very important, since now it is far more complex
+  
+* Clean code. Some ideas:
+** Substitute bot calls with API functions (i.e. sendMessage, forwardMessage...).
+   Functions are already written (not yet tested!) in shared.php
+** Create a class for inline keyboard management
+** Use info(), warning() and error() instead of botlog()
+** Always insert "or error(... $sql->error())" when making SQL queries.
+
+* Capabilities to send Image/Videos/Document (at the moment are blocked)
 
 * Facebook page integration
   Make the bot publish info not only in mailing list and Telegram channel,

config.php

@@ -16,6 +16,13 @@
   const DEBUG             = true;
   /* Log file name */
   const LOGFILE           = 'botlog.log';
+  /* MySQL informations */
+  const MYSQL_USER        = '';
+  const MYSQL_PASSWORD    = '';
+  const MYSQL_DB          = '';
+  const MYSQL_TABLE       = '';
+  /* Memcached local server port */
+  const MEMCACHED_PORT     = '11211';
   
   $EMOJI_THUMBSUP   = mb_convert_encoding('👍', 'UTF-8', 'HTML-ENTITIES');
   $EMOJI_THUMBSDOWN = mb_convert_encoding('👎', 'UTF-8', 'HTML-ENTITIES');
@@ -33,23 +40,20 @@
   const STATE_MSG_ANSWER  = 'msg_answer';
   
   // Saved variables in memcached
-  const MC_STATUS         = 'status';
+  const MC_STATUS                 = 'status';
-  const MC_FORWARD_MSG    = 'msg_forward';
+  const MC_FORWARD_MSG            = 'msg_forward';
-  const MC_DATE_MSG       = 'msg_date';
+  const MC_DATE_MSG               = 'msg_date';
-  const MC_INLINE_ID      = 'inline_id';
+  const MC_INLINE_ID              = 'inline_id';
+  const MC_FW_EDIT                = 'fw_edit'; // should not be necessary anymore
+  const MC_LIST_NUMBER            = 'list_number';
+  const MC_DELETE_SCHEDULED_ID    = 'delete_sch_id';
   
   // buttons costants
   const MSG_YES           = 'y';
   const MSG_NO            = 'n';
   const MSG_SCHEDULE      = 'sch';
   const MSG_ABORT         = 'abort';
-  
+  const MSG_DELETE        = 'delete';
-  const MYSQL_USER        = '';
-  const MYSQL_PASSWORD    = '';
-  const MYSQL_DB          = '';
-  const MYSQL_TABLE       = '';
-  
-  const MEMCACHED_PORT     = '11211';
   
   $WELCOME_MESSAGE   = "$EMOJI_BOT GOLEMbot
 $EMOJI_MSG Se scrivi un messaggio ti chiedo se inoltrarlo al canale

main.php

@@ -1,8 +1,8 @@
 <?php
 /*
- * Codice beta v0.99 del GOLEMbot - 24 set 2017
+ * Codice beta v0.99.1 del GOLEMbot - 28 set 2017
  * 
- * Opera by giomba e giuliof rilasciata sotto licenza GPLv3
+ * Opera by giomba, lucam e giuliof released by GPLv3 license
  * 
  */
 
@@ -27,8 +27,8 @@ $mc->addServer('localhost', MEMCACHED_PORT)
   or error("Something is wrong connecting to memcached daemon");
 
 // Accept only messages from a private chat
-if (isset($row->message->chat->type) and $row->message->chat->type != "private") {
+if(!isset($row->message->text)) {
-  if (DEBUG) warning("Message from ".$row->message->chat->type);
+  if (DEBUG) warning("Message from a not acceptable source");
   die();
 }
 // HANDLE A CALLBACK
@@ -59,6 +59,12 @@ elseif (isset ($row->callback_query)) {
 }
 // HANDLE A COMMON MESSAGE (text/commands/keyboard)
 else {
+  // throw away photos, documents and stickers (fixit)
+  if(isset($row->message->sticker) or isset($row->message->document)) {
+    // sto username si potrebbe quasi quasi estrapolare e mettere in una variabile decente
+    error("Qualcheduno (".$row->message->from->username.") ha mandato una cosa non supportata");
+  }
+  
   // Load variables
   $chatID = $row->message->chat->id;
   
@@ -70,7 +76,11 @@ else {
 }
 
 // Finally, check actual state and do things
-$status = $mc->get($chatID.MC_STATUS) or $mc->set($chatID.MC_STATUS, STATE_IDLE) or die(); // set status or force it to STATE_IDLE
+$status = $mc->get($chatID.MC_STATUS);
+  if (!$status) {
+    $mc->set($chatID.MC_STATUS, STATE_IDLE) or die(); // set status or force it to STATE_IDLE
+    $status = STATE_IDLE;
+  }
 if (DEBUG) info("Starting from status $status");
 
 // ricordati di schiantare quando ricevi un messaggio invece di una callback
@@ -79,12 +89,114 @@ switch ($status) {
   case STATE_IDLE:
     // In this state are not accepted callback requests
     if (isset($callback_data)) {
-      if (DEBUG) warning("Callback request is not accepted in status $status");
+      switch ($callback_data){
-      die();
+        case MSG_DELETE:
+          $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
+          $IDdelete = $mc->get($chatID.MC_DELETE_SCHEDULED_ID);
+          $sql->query("DELETE FROM ".MYSQL_TABLE." WHERE ID=$IDdelete")
+          or error("Can't make the query, SQL error ".$sql->error);
+          $sql->close();
+          
+          $url = API_URL.API_TOKEN."/editMessageText?chat_id=".($chatID).
+          "&message_id=".$inlineID .
+          "&text=Rimosso correttamente";
+          file_get_contents($url);
+          die();
+          break;
+        case '>':
+          $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
+          $numbers = $sql->query("SELECT COUNT(*) FROM ".MYSQL_TABLE);
+          $numbers = $numbers->fetch_array()[0];
+          info("Number of pages: $numbers");
+          $offset = $mc->get($chatID.MC_LIST_NUMBER);
+          // gestire meglio qui
+          $offset++;
+          break;
+        case '<':
+          $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
+          $numbers = $sql->query("SELECT COUNT(*) FROM ".MYSQL_TABLE);
+          $numbers = $numbers->fetch_array()[0];
+          info("Number of pages: $numbers");
+          $offset = $mc->get($chatID.MC_LIST_NUMBER);
+          // gestire meglio qui
+          $offset--;
+          break;
+        default:
+          if (DEBUG) warning("Callback request is not accepted in status $status");
+          die();
+        }
+        
+        $query = $sql->query("SELECT DATE_FORMAT(DateTime,'%d/%m/%Y ore %H') as DateTime,Text,Author,ID FROM ".MYSQL_TABLE."
+          ORDER BY DateTime ASC LIMIT 1 OFFSET $offset") or error("Can't make the query, SQL error ".$sql->error);
+          
+          //while($row = $query->fetch_assoc()) {
+          $row = $query->fetch_assoc();
+          $mc->set($chatID.MC_DELETE_SCHEDULED_ID, $row['ID'])
+          or $mc->replace($chatID.MC_DELETE_SCHEDULED_ID, $row['ID']);
+          //~ $query = API_URL . API_TOKEN . '/forwardMessage?' .
+            //~ 'chat_id=' . urlencode($chatID) .
+            //~ '&from_chat_id=' . urlencode($row['ChatID']) .
+            //~ '&message_id=' . urlencode($row['MessageID']);
+          //~ $answer = file_get_contents($query);
+          //~ $answer = json_decode($answer);
+          $sql->close();
+          
+          $container = array(
+          array(
+          array(
+          "text" => $row['DateTime'],
+          "callback_data" => "null"
+          )));
+          
+          $container[] = array(
+          $offset > 0?
+          array(
+            "text" => "<",
+            "callback_data" => "<"
+            )
+          :
+          array(
+            "text" => " ",
+            "callback_data" => "null"
+            ),
+          array(
+            "text" => "$EMOJI_THUMBSDOWN Canc",
+            "callback_data" => MSG_DELETE
+            ),
+            $offset < $numbers-1 ?
+          array(
+            "text" => ">",
+            "callback_data" => ">"
+            )
+            :
+            array(
+            "text" => " ",
+            "callback_data" => "null"
+            )
+            );
+          
+      $resp = array(
+          "inline_keyboard" => $container); 
+      $reply = json_encode($resp);
+      
+      $text="$row[Text]\n_$row[Author]_"; // NOME CANALE ".API_CHANNEL_ID."?";
+      
+      $query = API_URL.API_TOKEN."/editMessageText?chat_id=".($chatID).
+        "&message_id=".$inlineID.
+        "&text=".urlencode($text).
+        "&parse_mode=".urlencode("Markdown").
+        "&reply_markup=".$reply;
+      $answer = file_get_contents($query);
+      $answer = json_decode($answer);
+        
+        $mc->set($chatID.MC_LIST_NUMBER, $offset)
+        or $mc->replace($chatID.MC_LIST_NUMBER, $offset);
+        
+          die();
     }
-  
+    // qui ci metterei un else
     // Search for a command
-    if (($command = getCommand($row->message)) != -1) {
+    if (($command = getCommand($row->message)) != null) {
       info("Command received: $command[command] with options $command[options]");
       
       switch ($command['command']) {
@@ -99,29 +211,116 @@ switch ($status) {
           file_get_contents($query);
         break;
         
+        case '/edit':
+          //~ $text = "Invio effettuato correttamente";
+          //~ $url = API_URL.API_TOKEN."/deleteMessage?chat_id=".($chatID).
+          //~ "&message_id=2551";
+          //~ file_get_contents($url);
+        break;
+        
         case '/list':
-          $dateID = date('Y-n-j G:*');
+          //~ $dateID = date('Y-n-j G:*');
+        
+          //~ $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
+          //~ $query = $sql->query("SELECT DateTime,ChatID,MessageID FROM ".MYSQL_TABLE." WHERE DateTime>='$dateID'
+          //~ ORDER BY DateTime ASC LIMIT 10") or error("Can't make the query, SQL error ".$sql->error);
+          
+          //~ $text = "Prossimi 10 messaggi programmati";
+          //~ $i = 1;
+          //~ while($row = $query->fetch_assoc()) {
+            //~ $text .= "\n".$i." - ". $row['DateTime'];
+            //~ $i++;
+          //~ }
+          //~ $text .= "\nFunzione in miglioramento";
+          //~ $query = API_URL . API_TOKEN . '/sendMessage?' .
+            //~ 'chat_id=' . urlencode($chatID) .
+            //~ '&text=' . urlencode($text);
+          //~ $sql->close();
+          //~ file_get_contents($query);
+          
+          //~ break;
+          
+          // yusdgfdsjf
+          
+          //~ $dateID = date('Y-n-j G:*');
         
           $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
-          $query = $sql->query("SELECT DateTime FROM ".MYSQL_TABLE." WHERE DateTime>='$dateID'
+          $numbers = $sql->query("SELECT COUNT(*) FROM ".MYSQL_TABLE);
-          ORDER BY DateTime ASC LIMIT 10") or error("Can't make the query, SQL error ".$sql->error);
+          $numbers = $numbers->fetch_array()[0];
-          
+          if ($numbers == 0) {
-          $text = "Prossimi 10 messaggi programmati";
+            $query = API_URL.API_TOKEN."/sendmessage?chat_id=".($chatID).
-          $i = 1;
+              "&text=Nessun messaggio programmato";
-          while ($row = $query->fetch_assoc()) {
+            $answer = file_get_contents($query);
-            $text .= "\n".$i." - ". $row['DateTime'];
+            die();
-            $i++;
           }
+          
+          $query = $sql->query("SELECT DATE_FORMAT(DateTime,'%d/%m/%Y ore %H') as DateTime,Text,Author,ID FROM ".MYSQL_TABLE."
+          ORDER BY DateTime ASC LIMIT 1") or error("Can't make the query, SQL error ".$sql->error);
+          
+          //while($row = $query->fetch_assoc()) {
+          $row = $query->fetch_assoc();
+          $mc->set($chatID.MC_DELETE_SCHEDULED_ID, $row['ID'])
+          or $mc->replace($chatID.MC_DELETE_SCHEDULED_ID, $row['ID']);;
+          //~ $query = API_URL . API_TOKEN . '/forwardMessage?' .
+            //~ 'chat_id=' . urlencode($chatID) .
+            //~ '&from_chat_id=' . urlencode($row['ChatID']) .
+            //~ '&message_id=' . urlencode($row['MessageID']);
+          //~ $answer = file_get_contents($query);
+          //~ $answer = json_decode($answer);
           $sql->close();
           
-          $query = API_URL.API_TOKEN."/sendmessage?chat_id=".($chatID).
+          //$mc->set($chatID.MC_FW_EDIT, $answer->result->message_id)
-            "&text=".urlencode($text).
+          //  or $mc->replace($chatID.MC_FW_EDIT, $answer->result->message_id);
-            "&reply_markup=".$reply;
+          $container = array(
-          $answer = file_get_contents($query);
+          array(
+          array(
+          "text" => $row['DateTime'],
+          "callback_data" => "null"
+          )));
+          
+          $container[] = array(
+        array(
+          "text" => " ",
+          "callback_data" => "null"
+          ),
+        array(
+          "text" => "$EMOJI_THUMBSDOWN Canc",
+          "callback_data" => MSG_DELETE
+          ),
+          $numbers > 1 ?
+        array(
+          "text" => ">",
+          "callback_data" => ">"
+          )
+          :
+          array(
+          "text" => " ",
+          "callback_data" => "null"
+          )
+          );
+          
+      $resp = array(
+          "inline_keyboard" => $container); 
+      $reply = json_encode($resp);
+      
+      $text="$row[Text]\n_$row[Author]_"; // NOME CANALE ".API_CHANNEL_ID."?";
+      
+      $query = API_URL.API_TOKEN."/sendmessage?chat_id=".($chatID).
+        "&text=".urlencode($text).
+        "&parse_mode=".urlencode("Markdown").
+        "&reply_markup=".$reply;
+      $answer = file_get_contents($query);
+      $answer = json_decode($answer);
+          
+      $mc->set($chatID.MC_INLINE_ID, $answer->result->message_id)
+      or $mc->replace($chatID.MC_INLINE_ID, $answer->result->message_id);
+      
+      $mc->set($chatID.MC_LIST_NUMBER, 0)
+      or $mc->replace($chatID.MC_LIST_NUMBER, 0);
         break;
 
         default:
-          if (DEBUG) warning("$command[command] is not a valid command");
+          warning("$command[command] is not a valid command");
       }
     }
     else { // not a command (pure text)
@@ -181,11 +380,17 @@ switch ($status) {
         $msg = $mc->get($chatID.MC_FORWARD_MSG)
           or error("Can't forward message\n");
         
-        $query = API_URL . API_TOKEN . '/forwardMessage?' .
+        //~ $query = API_URL . API_TOKEN . '/forwardMessage?' .
-        'chat_id=' . urlencode(API_CHANNEL_ID) .
+        //~ 'chat_id=' . urlencode(API_CHANNEL_ID) .
-        '&from_chat_id=' . urlencode($msg->message->chat->id) .
+        //~ '&from_chat_id=' . urlencode($msg->message->chat->id) .
-        '&message_id=' . urlencode($msg->message->message_id);
+        //~ '&message_id=' . urlencode($msg->message->message_id);
-        file_get_contents($query);
+        //~ file_get_contents($query);
+        $query = API_URL . API_TOKEN . '/sendmessage?' .
+          'chat_id=' . urlencode(API_CHANNEL_ID) .
+          '&text='.urlencode($msg->message->text."\n_".$msg->message->chat->username."_").
+          "&parse_mode=".urlencode("Markdown"); //bah, un isset un ce lo vedrei male
+        $result = file_get_contents($query);
+        if(DEBUG) botlog("[LOG] $result\n");
         
         // Remove kbd
         $text = "Invio effettuato correttamente";
@@ -386,7 +591,7 @@ switch ($status) {
     $msg = $mc->get($chatID.MC_FORWARD_MSG);
     
     // add to database (mysql)
-    
+    $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
     // Build up mysql query
     $value  = "(";
     $value .= $msg->message->message_id;
@@ -397,12 +602,17 @@ switch ($status) {
     $value .= $currentTab['month'].'-';
     $value .= $currentTab['day'].' ';
     $value .= $callback_data.":00:00'";
+    $value .= ",";
+    $value .= "'".$sql->escape_string($msg->message->text)."'";
+    $value .= ",";
+    $value .= "'".$sql->escape_string($msg->message->from->username)."'"; // andrebbe fatto un isset, vabbé
     $value .= ");";
     
     info("Saving post in ".MYSQL_TABLE.", scheduled date: ".$value);
     
-    $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
+   
-    $query = $sql->query("INSERT INTO ".MYSQL_TABLE."  (MessageID,ChatID,DateTime) VALUE ".$value);
+    $query = $sql->query("INSERT INTO ".MYSQL_TABLE."  (MessageID,ChatID,DateTime,Text,Author) VALUE ".$value)
+    or error("Can't make the query, SQL error ".$sql->error);
     $sql->close();
     
     $text = "Programmazione avvenuta con successo";

schedule.php

@@ -1,23 +1,33 @@
 <?php
+/*
+ * This script must be called from the system every hour (i.e. cron)
+ */
+
 require_once('config.php');
 require_once('shared.php');
 
 if (DEBUG) botlog("\n\n\n".'[II] Scheduler starting at ' . date('Y-m-d H:i:s') . ' ====================' . "\n\n");
 
+// Get current date in MySQL DATETIME default format
 $dateID = date('Y-n-j G:*');
-echo $dateID;
+
+// Connect to MySQL DB
 $sql = new mysqli('localhost', MYSQL_USER, MYSQL_PASSWORD, MYSQL_DB);
-$query = $sql->query("SELECT MessageID,ChatID FROM ".MYSQL_TABLE." WHERE DateTime='".$dateID."'");
+$query = $sql->query("SELECT DateTime,Text,Author FROM ".MYSQL_TABLE.
+      "WHERE DateTime='".$dateID."'")
+      or error("Can't make the query, SQL error ".$sql->error);
+
+// Post all messages (only text)
 while ($row = $query->fetch_assoc()) {
   info("Publishing message $row[MessageID]");
-  $bot_query = API_URL . API_TOKEN . '/forwardMessage?' .
+  $bot_query = API_URL . API_TOKEN . '/sendMessage?' .
   'chat_id=' . urlencode(API_CHANNEL_ID) .
-  '&from_chat_id=' . urlencode($row['ChatID']) .
+  '&text=' . urlencode($row['Text']."\n_".$row['Author']."_").
-  '&message_id=' . urlencode($row['MessageID']);
+  "&parse_mode=".urlencode("Markdown");
   file_get_contents($bot_query);
 }
-// clean events <= today
 
+// Remove just posted messages (and any eventual previous one)
 $sql->query("DELETE FROM ".MYSQL_TABLE." WHERE DateTime<='".$dateID."'");
 $sql->close();
 ?>

shared.php

@@ -25,26 +25,98 @@
     if (DEBUG) botlog("[II] $message\n");
   }
     
-  // Interpreta un comando inviato al bot - mettere null o simili invece di -1
+// Interpreta un comando inviato al bot - mettere null o simili invece di -1
   function getCommand($messaggio, $NoOffset = true) {
     if (!isset($messaggio->entities))
-      return -1;
+      return null;
     foreach ($messaggio->entities as $entity) {
       if ($entity->type == "bot_command") {
         if ($NoOffset == true and $entity->offset != 0)
-          return -1;
+          return null;
         //~ if (DEBUG) botlog("[II] Comando: ".$entity->offset. " ".$messaggio->text);
         //return substr($messaggio->text, $entity->offset, $entity->length);
         $ret['command'] = substr($messaggio->text, $entity->offset, $entity->length);
         $ret['options'] = substr($messaggio->text, $entity->length+$entity->offset+1);
-        if (DEBUG) botlog("[II] Comando: ".$ret['command']."\n");
+        info("Command: $ret[command]");
         return $ret;
       }
     }
-    return -1;
+    return null;
   }
   
-  // fabbrica una tabellina che in futuro sarà la pagina di calendario specificata da $mese e $anno
+  /**** Telegram query functions ****/
+  
+  // return a message object, null if is error
+  function sendMessage($chat_id, $text, $parse_mode = null, 
+                       $disable_web_preview = false,
+                       $disable_notification = false, 
+                       $reply_to_message_id = null, 
+                       $reply_markup = null) {
+    $query = API_URL.API_TOKEN."/sendMessage?chat_id=".$chat_id.
+          "&text=".urlencode($text);
+          
+    if ($parse_mode != null)   $query .= "&parse_mode=$parse_mode";
+    if ($reply_markup != null) $query .= "&reply_markup=$reply_markup";
+    if ($disable_web_preview != false) $query .= "&disable_web_preview=$disable_web_preview";
+    if ($disable_notification != false) $query .= "&disable_notification=$disable_notification";
+    if ($reply_to_message_id != null) $query .= "&reply_to_message_id=$reply_to_message_id";
+    if ($reply_markup != null) $query .= "&reply_markup=$reply_markup";
+    
+    $answer = file_get_contents($query);
+    if ($answer === false) warning("Something is wrong in sendMessage - chat_id: $chat_id - text: $text");
+    return $answer;
+  }
+  
+  //
+  function forwardMessage($chat_id, $from_chat_id,
+                       $message_id,
+                       $disable_notification = false) {
+                         
+    $query = API_URL . API_TOKEN . "/forwardMessage?" .
+            "chat_id=".urlencode($chat_id) .
+            "&from_chat_id=" . urlencode($from_chat_id) .
+            "&message_id=" . urlencode($message_id);
+            
+    if ($disable_notification != null) $query .= "&disable_notification=$disable_notification";
+
+    $answer = file_get_contents($query);
+    if ($answer === false) warning("Something is wrong in forwardMessage - chat_id: $chat_id - message_id: $message_id");
+    return $answer;
+  }
+
+  // omitted "inline parameters", for inline bot funtions (not used here)
+  function editMessageText($chat_id, $message_id, $text,
+                    $parse_mode = null,
+                    $disable_web_page_preview = false,
+                    $reply_markup = null) {
+    
+    $query = API_URL . API_TOKEN . "/forwardMessage?" .
+            "chat_id=".urlencode($chat_id) .
+            "&message_id=" . urlencode($message_id).
+            "&text=" . urlencode($text);
+            
+    if ($disable_web_page_preview != null) $query .= "&disable_web_page_preview=$disable_web_page_preview";
+    if ($reply_markup != null) $query .= "&reply_markup=$reply_markup";
+
+    $answer = file_get_contents($query);
+    if ($answer === false) warning("Something is wrong in editMessageText - chat_id: $chat_id - message_id: $message_id");
+    return $answer;
+  }
+  
+  //
+  function deleteMessage($chat_id, $message_id) {
+    
+    $query = API_URL . API_TOKEN . "/deleteMessage?" .
+            "chat_id=".urlencode($chat_id) .
+            "&message_id=" . urlencode($message_id);
+            
+    $answer = file_get_contents($query);
+    if ($answer === false) warning("Something is wrong in deleteMessage - chat_id: $chat_id - message_id: $message_id");
+    return $answer;
+  }
+  
+  
+  // Makes the calendar inline keyboard
   function getCalendarTab ($month, $year) {
     $container = array();
     $riga = array();
@@ -66,8 +138,8 @@
     
     $daysInMonth = cal_days_in_month (CAL_GREGORIAN , $month , $year);
     $date = $year."-".$month;
-    $currentMonth = date('nY') == $month.$year; //magari anche l'anno?
+    $isCurrentMonth = date('nY') == $month.$year;
-    $startingDay = $currentMonth ? date('j') : 1;
+    $startingDay = $isCurrentMonth ? date('j') : 1;
     if (DEBUG) botlog("[II] First day: ".$date.'-'.$startingDay."\n"); 
     $firstDay    = date("N", strtotime($date.'-'.$startingDay));
     
@@ -121,7 +193,7 @@
     
     
     $container[] = array(
-    $currentMonth ?
+    $isCurrentMonth ?
       array(
           "text" => " ",
           "callback_data" => "null"