<?php
//------------------------------------------------------------------------------
//  Pi.Alert
//  Open Source Network Guard / WIFI & LAN intrusion detector 
//
//  devices.php - Front module. Server side. Manage Devices
//------------------------------------------------------------------------------
//  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
//------------------------------------------------------------------------------
// ## TimeZone processing
$config_file = "../../../config/pialert.conf";
$config_file_lines = file($config_file);
$config_file_lines_timezone = array_values(preg_grep('/^TIMEZONE\s.*/', $config_file_lines));
$timezone_line = explode("'", $config_file_lines_timezone[0]);
$Pia_TimeZone = $timezone_line[1];
date_default_timezone_set($Pia_TimeZone);

foreach (glob("../../../db/setting_language*") as $filename) {
    $pia_lang_selected = str_replace('setting_language_','',basename($filename));
}
if (strlen($pia_lang_selected) == 0) {$pia_lang_selected = 'en_us';}

//------------------------------------------------------------------------------
  // External files
  require 'db.php';
  require 'util.php';
  require '../templates/language/'.$pia_lang_selected.'.php';

//------------------------------------------------------------------------------
//  Action selector
//------------------------------------------------------------------------------
  // Set maximum execution time to 15 seconds
  ini_set ('max_execution_time','30');
  
  // Open DB
  OpenDB();

  // Action functions
  if (isset ($_REQUEST['action']) && !empty ($_REQUEST['action'])) {
    $action = $_REQUEST['action'];
    switch ($action) {
      case 'getDeviceData':           getDeviceData();                         break;
      case 'setDeviceData':           setDeviceData();                         break;
      case 'getNetworkNodes':         getNetworkNodes();                       break;
      case 'deleteDevice':            deleteDevice();                          break;
      case 'deleteAllWithEmptyMACs':  deleteAllWithEmptyMACs();                break;      
      case 'createBackupDB':          createBackupDB();                        break;
      case 'restoreBackupDB':         restoreBackupDB();                       break;
      case 'deleteAllDevices':        deleteAllDevices();                      break;
      case 'runScan15min':            runScan15min();                          break;
      case 'runScan1min':             runScan1min();                           break;
      case 'deleteUnknownDevices':    deleteUnknownDevices();                  break;
      case 'deleteEvents':            deleteEvents();                          break;
      case 'deleteEvents30':          deleteEvents30();                        break;
      case 'deleteActHistory':        deleteActHistory();                      break;
      case 'deleteDeviceEvents':      deleteDeviceEvents();                    break;
      case 'PiaBackupDBtoArchive':    PiaBackupDBtoArchive();                  break;
      case 'PiaRestoreDBfromArchive': PiaRestoreDBfromArchive();               break;
      case 'PiaPurgeDBBackups':       PiaPurgeDBBackups();                     break;
      case 'PiaEnableDarkmode':       PiaEnableDarkmode();                     break;
      case 'PiaToggleArpScan':        PiaToggleArpScan();                      break; 
      case 'ExportCSV':               ExportCSV();                             break;    
      case 'ImportCSV':               ImportCSV();                             break;     

      case 'getDevicesTotals':        getDevicesTotals();                      break;
      case 'getDevicesList':          getDevicesList();                        break;
      case 'getDevicesListCalendar':  getDevicesListCalendar();                break;

      case 'getOwners':               getOwners();                             break;
      case 'getDeviceTypes':          getDeviceTypes();                        break;
      case 'getGroups':               getGroups();                             break;
      case 'getLocations':            getLocations();                          break;

      default:                        logServerConsole ('Action: '. $action);  break;
    }
  }


//------------------------------------------------------------------------------
//  Query Device Data
//------------------------------------------------------------------------------
function getDeviceData() {
  global $db;

  // Request Parameters
  $periodDate = getDateFromPeriod();
  $mac = $_REQUEST['mac'];

  // Device Data
  $sql = 'SELECT rowid, *,
            CASE WHEN dev_AlertDeviceDown=1 AND dev_PresentLastScan=0 THEN "Down"
                 WHEN dev_PresentLastScan=1 THEN "On-line"
                 ELSE "Off-line" END as dev_Status
          FROM Devices
          WHERE dev_MAC="'. $mac .'" or cast(rowid as text)="'. $mac. '"';
  $result = $db->query($sql);
  $row = $result -> fetchArray (SQLITE3_ASSOC);
  $deviceData = $row;
  $mac = $deviceData['dev_MAC'];

  $deviceData['dev_Network_Node_MAC_ADDR'] = $row['dev_Network_Node_MAC_ADDR'];
  $deviceData['dev_Network_Node_port'] = $row['dev_Network_Node_port'];
  $deviceData['dev_FirstConnection'] = formatDate ($row['dev_FirstConnection']); // Date formated
  $deviceData['dev_LastConnection'] =  formatDate ($row['dev_LastConnection']);  // Date formated

  $deviceData['dev_RandomMAC'] = ( in_array($mac[1], array("2","6","A","E","a","e")) ? 1 : 0);

  // Count Totals
  $condition = ' WHERE eve_MAC="'. $mac .'" AND eve_DateTime >= '. $periodDate;

  // Connections
  $sql = 'SELECT COUNT(*) FROM Sessions
          WHERE ses_MAC="'. $mac .'"
          AND (   ses_DateTimeConnection    >= '. $periodDate .'
               OR ses_DateTimeDisconnection >= '. $periodDate .'
               OR ses_StillConnected = 1 )';
  $result = $db->query($sql);
  $row = $result -> fetchArray (SQLITE3_NUM);
  $deviceData['dev_Sessions'] = $row[0];
  
  // Events
  $sql = 'SELECT COUNT(*) FROM Events '. $condition .' AND eve_EventType <> "Connected" AND eve_EventType <> "Disconnected" ';
  $result = $db->query($sql);
  $row = $result -> fetchArray (SQLITE3_NUM);
  $deviceData['dev_Events'] = $row[0];

  // Down Alerts
  $sql = 'SELECT COUNT(*) FROM Events '. $condition .' AND eve_EventType = "Device Down"';
  $result = $db->query($sql);
  $row = $result -> fetchArray (SQLITE3_NUM);
  $deviceData['dev_DownAlerts'] = $row[0];

  // Get current date using php, sql datetime does not return time respective to timezone.
  $currentdate = date("Y-m-d H:i:s");
  // Presence hours
  $sql = 'SELECT CAST(( MAX (0, SUM (julianday (IFNULL (ses_DateTimeDisconnection,"'. $currentdate .'" ))
                                     - julianday (CASE WHEN ses_DateTimeConnection < '. $periodDate .' THEN '. $periodDate .'
                                                       ELSE ses_DateTimeConnection END)) *24 )) AS INT)
          FROM Sessions
          WHERE ses_MAC="'. $mac .'"
            AND ses_DateTimeConnection IS NOT NULL
            AND (ses_DateTimeDisconnection IS NOT NULL OR ses_StillConnected = 1 )
            AND (   ses_DateTimeConnection    >= '. $periodDate .'
                 OR ses_DateTimeDisconnection >= '. $periodDate .'
                 OR ses_StillConnected = 1 )';
  $result = $db->query($sql);
  $row = $result -> fetchArray (SQLITE3_NUM);
  $deviceData['dev_PresenceHours'] = round ($row[0]);

  // Return json
  echo (json_encode ($deviceData));
}


//------------------------------------------------------------------------------
//  Update Device Data
//------------------------------------------------------------------------------
function setDeviceData() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'UPDATE Devices SET
                 dev_Name                   = "'. quotes($_REQUEST['name'])         .'",
                 dev_Owner                  = "'. quotes($_REQUEST['owner'])        .'",
                 dev_DeviceType             = "'. quotes($_REQUEST['type'])         .'",
                 dev_Vendor                 = "'. quotes($_REQUEST['vendor'])       .'",
                 dev_Favorite               = "'. quotes($_REQUEST['favorite'])     .'",
                 dev_Group                  = "'. quotes($_REQUEST['group'])        .'",
                 dev_Location               = "'. quotes($_REQUEST['location'])     .'",
                 dev_Comments               = "'. quotes($_REQUEST['comments'])     .'",
                 dev_Network_Node_MAC_ADDR  = "'. quotes($_REQUEST['networknode']).'",
                 dev_Network_Node_port      = "'. quotes($_REQUEST['networknodeport']).'",
                 dev_StaticIP               = "'. quotes($_REQUEST['staticIP'])     .'",
                 dev_ScanCycle              = "'. quotes($_REQUEST['scancycle'])    .'",
                 dev_AlertEvents            = "'. quotes($_REQUEST['alertevents'])  .'",
                 dev_AlertDeviceDown        = "'. quotes($_REQUEST['alertdown'])    .'",
                 dev_SkipRepeated           = "'. quotes($_REQUEST['skiprepeated']) .'",
                 dev_NewDevice              = "'. quotes($_REQUEST['newdevice'])    .'",
                 dev_Archived               = "'. quotes($_REQUEST['archived'])     .'"
          WHERE dev_MAC="' . $_REQUEST['mac'] .'"';
  // update Data
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_UpdDev'];
  } else {
    echo $pia_lang['BackDevices_DBTools_UpdDevError']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}


//------------------------------------------------------------------------------
//  Delete Device
//------------------------------------------------------------------------------
function deleteDevice() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Devices WHERE dev_MAC="' . $_REQUEST['mac'] .'"';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelDev_a'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelDevError_a']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete all devices with empty MAC addresses
//------------------------------------------------------------------------------
function deleteAllWithEmptyMACs() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Devices WHERE dev_MAC=""';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelDev_b'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelDevError_b']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete all devices with empty MAC addresses
//------------------------------------------------------------------------------
function deleteUnknownDevices() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Devices WHERE dev_Name="(unknown)"';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelDev_b'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelDevError_b']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete Device Events
//------------------------------------------------------------------------------
function deleteDeviceEvents() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Events WHERE eve_MAC="' . $_REQUEST['mac'] .'"';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelEvents'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelEventsError']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete all devices 
//------------------------------------------------------------------------------
function deleteAllDevices() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Devices';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelDev_b'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelDevError_b']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete all Events 
//------------------------------------------------------------------------------
function deleteEvents() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Events';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelEvents'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelEventsError']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete all Events older than 30 days
//------------------------------------------------------------------------------
function deleteEvents30() {
  global $db;
  global $pia_lang;

  // sql
  $sql = "DELETE FROM Events WHERE eve_DateTime <= date('now', '-30 day')";
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelEvents'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelEventsError']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Delete History
//------------------------------------------------------------------------------
function deleteActHistory() {
  global $db;
  global $pia_lang;

  // sql
  $sql = 'DELETE FROM Online_History';
  // execute sql
  $result = $db->query($sql);

  // check result
  if ($result == TRUE) {
    echo $pia_lang['BackDevices_DBTools_DelActHistory'];
  } else {
    echo $pia_lang['BackDevices_DBTools_DelActHistoryError']."\n\n$sql \n\n". $db->lastErrorMsg();
  }
}

//------------------------------------------------------------------------------
//  Backup DB to Archiv
//------------------------------------------------------------------------------
function PiaBackupDBtoArchive() {
  // prepare fast Backup
  $file = '../../../db/pialert.db';
  $newfile = '../../../db/pialert.db.latestbackup';
  global $pia_lang;

  // copy files as a fast Backup
  if (!copy($file, $newfile)) {
      echo $pia_lang['BackDevices_Backup_CopError'];
  } else {
    // Create archive with actual date
    $Pia_Archive_Name = 'pialertdb_'.date("Ymd_His").'.zip';
    $Pia_Archive_Path = '../../../db/';
    exec('zip -j '.$Pia_Archive_Path.$Pia_Archive_Name.' ../../../db/pialert.db', $output);
    // chheck if archive exists
    if (file_exists($Pia_Archive_Path.$Pia_Archive_Name) && filesize($Pia_Archive_Path.$Pia_Archive_Name) > 0) {
      echo $pia_lang['BackDevices_Backup_okay'].': ('.$Pia_Archive_Name.')';
      unlink($newfile);
      echo("<meta http-equiv='refresh' content='1'>");
    } else {
      echo $pia_lang['BackDevices_Backup_Failed'].' (pialert.db.latestbackup)';
    }
  }

}

//------------------------------------------------------------------------------
//  Restore DB from Archiv
//------------------------------------------------------------------------------
function PiaRestoreDBfromArchive() {
  // prepare fast Backup
  $file = '../../../db/pialert.db';
  $oldfile = '../../../db/pialert.db.prerestore';
  global $pia_lang;

  // copy files as a fast Backup
  if (!copy($file, $oldfile)) {
      echo $pia_lang['BackDevices_Restore_CopError'];
  } else {
    // extract latest archive and overwrite the actual pialert.db
    $Pia_Archive_Path = '../../../db/';
    exec('/bin/ls -Art '.$Pia_Archive_Path.'*.zip | /bin/tail -n 1 | /usr/bin/xargs -n1 /bin/unzip -o -d ../../../db/', $output);
    // check if the pialert.db exists
    if (file_exists($file)) {
       echo $pia_lang['BackDevices_Restore_okay'];
       unlink($oldfile);
       echo("<meta http-equiv='refresh' content='1'>");
     } else {
       echo $pia_lang['BackDevices_Restore_Failed'];
     }
  }

}

//------------------------------------------------------------------------------
//  Purge Backups
//------------------------------------------------------------------------------
function PiaPurgeDBBackups() {
  global $pia_lang;

  $Pia_Archive_Path = '../../../db';
  $Pia_Backupfiles = array();
  $files = array_diff(scandir($Pia_Archive_Path, SCANDIR_SORT_DESCENDING), array('.', '..', 'pialert.db', 'pialertdb-reset.zip'));

  foreach ($files as &$item) 
    {
      $item = $Pia_Archive_Path.'/'.$item;
      if (stristr($item, 'setting_') == '') {array_push($Pia_Backupfiles, $item);}
    }

  if (sizeof($Pia_Backupfiles) > 3) 
    {
      rsort($Pia_Backupfiles);
      unset($Pia_Backupfiles[0], $Pia_Backupfiles[1], $Pia_Backupfiles[2]);
      $Pia_Backupfiles_Purge = array_values($Pia_Backupfiles);
      for ($i = 0; $i < sizeof($Pia_Backupfiles_Purge); $i++) 
        {
          unlink($Pia_Backupfiles_Purge[$i]);
        }
  }
  echo $pia_lang['BackDevices_DBTools_Purge'];
  echo("<meta http-equiv='refresh' content='1'>");
    
}

//------------------------------------------------------------------------------
//  Export CSV of devices
//------------------------------------------------------------------------------
function ExportCSV() {

  header("Content-Type: application/octet-stream");
  header("Content-Transfer-Encoding: Binary");
  header("Content-disposition: attachment; filename=\"devices.csv\"");

  global $db;
  $func_result = $db->query("SELECT * FROM Devices");        

  // prepare CSV header row
  // header array with column names 
  $columns = getDevicesColumns();

  // wrap the headers with " (quotes) 
  $resultCSV = '"'.implode('","', $columns).'"';  

  //and append a new line
  $resultCSV = $resultCSV."\n";

  // retrieve the devices from the DB
  while ($row = $func_result -> fetchArray (SQLITE3_ASSOC)) {   

    // loop through columns and add values to the string 
    $index = 0;
    foreach ($columns as $columnName) {

      // add quotes around the value to prevent issues with commas in fields
      $resultCSV = $resultCSV.'"'.$row[$columnName].'"';

      // detect last loop - skip as no comma needed
      if ($index != count($columns) - 1  )
      {
        $resultCSV = $resultCSV.',';
      }
      $index++;
    } 

    //$resultCSV = $resultCSV.implode(",", [$row["dev_MAC"], $row["dev_Name"]]);
    $resultCSV = $resultCSV."\n";
  }

  //write the built CSV string
  echo $resultCSV;    
}

//------------------------------------------------------------------------------
//  Import CSV of devices
//------------------------------------------------------------------------------
function ImportCSV() {


  $file = '../../../config/devices.csv';

  if (file_exists($file)) {

    global $db;
    global $pia_lang;

    $error = "";

    // sql
    $sql = 'DELETE FROM Devices';
    // execute sql
    $result = $db->query($sql);    

    // Open the CSV file with read-only mode
    $csvFile = fopen($file, 'r');

    // Skip the first line
    fgetcsv($csvFile);

    $columns = getDevicesColumns();

    // Parse data from CSV file line by line (max 10000 lines)
    while (($row = fgetcsv($csvFile, 10000, ",")) !== FALSE)
    {
      $sql = 'INSERT INTO Devices ('.implode(',', $columns).') VALUES ("' .implode('","', $row).'")';

      $result = $db->query($sql);

      // check result
      if ($result != TRUE) {
        $error = $db->lastErrorMsg();
        // break the while loop on error
        break;
      } 
    }

    // Close opened CSV file
    fclose($csvFile);
   
    if($error == "")
    {
      // import succesful
      echo $pia_lang['BackDevices_DBTools_ImportCSV'];

    }
    else{
      // an error occurred while writing to the DB, display the last error message 
      echo $pia_lang['BackDevices_DBTools_ImportCSVError']."\n\n$sql \n\n".$error;
    }
    
   } else {
    echo $pia_lang['BackDevices_DBTools_ImportCSVMissing'];    
   }


   $db->close();

}

//------------------------------------------------------------------------------
//  Toggle Dark/Light Themes
//------------------------------------------------------------------------------
function PiaEnableDarkmode() {
  $file = '../../../db/setting_darkmode';
  global $pia_lang;

  if (file_exists($file)) {
      echo $pia_lang['BackDevices_darkmode_disabled'];
      unlink($file);
      echo("<meta http-equiv='refresh' content='1'>");
     } else {
      echo $pia_lang['BackDevices_darkmode_enabled'];
      $darkmode = fopen($file, 'w');
      echo("<meta http-equiv='refresh' content='1'>");
     }
  }


//------------------------------------------------------------------------------
//  Toggle on/off Arp-Scans
//------------------------------------------------------------------------------
function PiaToggleArpScan() {
  $file = '../../../db/setting_stoparpscan';
  global $pia_lang;

  if (file_exists($file)) {
      echo $pia_lang['BackDevices_Arpscan_enabled'];
      unlink($file);
      echo("<meta http-equiv='refresh' content='1'>");
     } else {
      echo $pia_lang['BackDevices_Arpscan_disabled'];
      $startarpscan = fopen($file, 'w');
      echo("<meta http-equiv='refresh' content='1'>");
     }
  }

//------------------------------------------------------------------------------
//  Query total numbers of Devices by status
//------------------------------------------------------------------------------
function getDevicesTotals() {

  $resultJSON = "";

  if(getCache("getDevicesTotals") != "")
  {
    $resultJSON = getCache("getDevicesTotals");
  } else
  {
    global $db;

    // combined query
    $result = $db->query(
          'SELECT 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('all').') as devices, 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('connected').') as connected, 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('favorites').') as favorites, 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('new').') as new, 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('down').') as down, 
          (SELECT COUNT(*) FROM Devices '. getDeviceCondition ('archived').') as archived
    ');

    $row = $result -> fetchArray (SQLITE3_NUM); 
    $resultJSON = json_encode (array ($row[0], $row[1], $row[2], $row[3], $row[4], $row[5]));

    // save to cache
    setCache("getDevicesTotals", $resultJSON );
  }  

  echo ($resultJSON);
}


//------------------------------------------------------------------------------
//  Query the List of devices in a determined Status
//------------------------------------------------------------------------------
function getDevicesList() {
  global $db;

  // SQL
  $condition = getDeviceCondition ($_REQUEST['status']);

  $sql = 'SELECT rowid, *, CASE
            WHEN dev_AlertDeviceDown=1 AND dev_PresentLastScan=0 THEN "Down"
            WHEN dev_NewDevice=1 THEN "New"
            WHEN dev_PresentLastScan=1 THEN "On-line"
            ELSE "Off-line"
          END AS dev_Status
          FROM Devices '. $condition;
  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    $tableData['data'][] = array ($row['dev_Name'],
                                  $row['dev_Owner'],
                                  $row['dev_DeviceType'],
                                  $row['dev_Favorite'],
                                  $row['dev_Group'],
                                  formatDate ($row['dev_FirstConnection']),
                                  formatDate ($row['dev_LastConnection']),
                                  $row['dev_LastIP'],
                                  ( in_array($row['dev_MAC'][1], array("2","6","A","E","a","e")) ? 1 : 0),
                                  $row['dev_Status'],
                                  $row['dev_MAC'], // MAC (hidden)
                                  formatIPlong ($row['dev_LastIP']), // IP orderable
                                  $row['rowid'] // Rowid (hidden)
                                 );
  }

  // Control no rows
  if (empty($tableData['data'])) {
    $tableData['data'] = '';
  }

  // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Query the List of devices for calendar
//------------------------------------------------------------------------------
function getDevicesListCalendar() {
  global $db;

  // SQL
  $condition = getDeviceCondition ($_REQUEST['status']);
  $result = $db->query('SELECT * FROM Devices ' . $condition);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    if ($row['dev_Favorite'] == 1) {
      $row['dev_Name'] = '<span class="text-yellow">&#9733</span>&nbsp'. $row['dev_Name'];
    }

    $tableData[] = array ('id'       => $row['dev_MAC'],
                          'title'    => $row['dev_Name'],
                          'favorite' => $row['dev_Favorite']);
  }

  // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Query the List of Owners
//------------------------------------------------------------------------------
function getOwners() {
  global $db;

  // SQL
  $sql = 'SELECT DISTINCT 1 as dev_Order, dev_Owner
          FROM Devices
          WHERE dev_Owner <> "(unknown)" AND dev_Owner <> ""
            AND dev_Favorite = 1
        UNION
          SELECT DISTINCT 2 as dev_Order, dev_Owner
          FROM Devices
          WHERE dev_Owner <> "(unknown)" AND dev_Owner <> ""
            AND dev_Favorite = 0
            AND dev_Owner NOT IN
               (SELECT dev_Owner FROM Devices WHERE dev_Favorite = 1)
        ORDER BY 1,2 ';
  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    $tableData[] = array ('order' => $row['dev_Order'],
                          'name'  => $row['dev_Owner']);
  }

  // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Query Device Data
//------------------------------------------------------------------------------
function getNetworkNodes() {
  global $db;

  // Device Data
  $sql = 'SELECT * FROM Devices WHERE dev_DeviceType in (  "AP", "Gateway", "Powerline", "Switch", "WLAN", "PLC", "Router","USB LAN Adapter", "USB WIFI Adapter")';

  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {   
    // Push row data
    $tableData[] = array('id'    => $row['dev_MAC'], 
                         'name'  => $row['dev_Name'] );                        
  }
  
  // Control no rows
  if (empty($tableData)) {
    $tableData = [];
  }
  
    // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Query the List of types
//------------------------------------------------------------------------------
function getDeviceTypes() {
  global $db;

  $networkTypes = getNetworkTypes();

  // SQL
  $sql = 'SELECT DISTINCT 9 as dev_Order, dev_DeviceType
          FROM Devices
          WHERE dev_DeviceType NOT IN ("",
                 "Smartphone", "Tablet",
                 "Laptop", "Mini PC", "PC", "Printer", "Server", "Singleboard Computer (SBC)",
                 "Game Console", "SmartTV", "TV Decoder", "Virtual Assistance",
                 "Clock", "House Appliance", "Phone", "Radio",
                 "AP", "Gateway", "Powerline", "Switch", "WLAN", "PLC", "Router","USB LAN Adapter", "USB WIFI Adapter" )

          UNION SELECT 1 as dev_Order, "Smartphone"
          UNION SELECT 1 as dev_Order, "Tablet"

          UNION SELECT 2 as dev_Order, "Laptop"
          UNION SELECT 2 as dev_Order, "Mini PC"
          UNION SELECT 2 as dev_Order, "PC"
          UNION SELECT 2 as dev_Order, "Printer"
          UNION SELECT 2 as dev_Order, "Server"
          UNION SELECT 2 as dev_Order, "Singleboard Computer (SBC)"
          UNION SELECT 2 as dev_Order, "NAS"

          UNION SELECT 3 as dev_Order, "Domotic"
          UNION SELECT 3 as dev_Order, "Game Console"
          UNION SELECT 3 as dev_Order, "SmartTV"
          UNION SELECT 3 as dev_Order, "TV Decoder"
          UNION SELECT 3 as dev_Order, "Virtual Assistance"

          UNION SELECT 4 as dev_Order, "Clock"
          UNION SELECT 4 as dev_Order, "House Appliance"
          UNION SELECT 4 as dev_Order, "Phone"
          UNION SELECT 4 as dev_Order, "Radio"

          -- network devices
          UNION SELECT 5 as dev_Order, "AP"
          UNION SELECT 5 as dev_Order, "Gateway"
          UNION SELECT 5 as dev_Order, "Powerline"
          UNION SELECT 5 as dev_Order, "Switch"
          UNION SELECT 5 as dev_Order, "WLAN"
          UNION SELECT 5 as dev_Order, "PLC"
          UNION SELECT 5 as dev_Order, "Router"
          UNION SELECT 5 as dev_Order, "USB LAN Adapter"
          UNION SELECT 5 as dev_Order, "USB WIFI Adapter"

          UNION SELECT 10 as dev_Order, "Other"

          ORDER BY 1,2';

          
  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    $tableData[] = array ('order' => $row['dev_Order'],
                          'name'  => $row['dev_DeviceType']);
  }

  // Return json
  echo (json_encode ($tableData));
}
//------------------------------------------------------------------------------
//  Query the List of groups
//------------------------------------------------------------------------------
function getGroups() {
  global $db;

  // SQL
  $sql = 'SELECT DISTINCT 1 as dev_Order, dev_Group
          FROM Devices
          WHERE dev_Group NOT IN ("(unknown)", "Others") AND dev_Group <> ""
          UNION SELECT 1 as dev_Order, "Always on"
          UNION SELECT 1 as dev_Order, "Friends"
          UNION SELECT 1 as dev_Order, "Personal"
          UNION SELECT 2 as dev_Order, "Others"
          ORDER BY 1,2 ';
  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    $tableData[] = array ('order' => $row['dev_Order'],
                          'name'  => $row['dev_Group']);
  }

  // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Query the List of locations
//------------------------------------------------------------------------------
function getLocations() {
  global $db;

  // SQL
  $sql = 'SELECT DISTINCT 9 as dev_Order, dev_Location
          FROM Devices
          WHERE dev_Location <> ""
            AND dev_Location NOT IN (
                "Bathroom", "Bedroom", "Dining room", "Hallway",
                "Kitchen", "Laundry", "Living room", "Study", 
                "Attic", "Basement", "Garage", 
                "Back yard", "Garden", "Terrace",
                "Other")

          UNION SELECT 1 as dev_Order, "Bathroom"
          UNION SELECT 1 as dev_Order, "Bedroom"
          UNION SELECT 1 as dev_Order, "Dining room"
          UNION SELECT 1 as dev_Order, "Hall"  
          UNION SELECT 1 as dev_Order, "Kitchen"
          UNION SELECT 1 as dev_Order, "Laundry"
          UNION SELECT 1 as dev_Order, "Living room"
          UNION SELECT 1 as dev_Order, "Study" 

          UNION SELECT 2 as dev_Order, "Attic"
          UNION SELECT 2 as dev_Order, "Basement" 
          UNION SELECT 2 as dev_Order, "Garage" 

          UNION SELECT 3 as dev_Order, "Back yard"
          UNION SELECT 3 as dev_Order, "Garden" 
          UNION SELECT 3 as dev_Order, "Terrace"

          UNION SELECT 10 as dev_Order, "Other"
          ORDER BY 1,2 ';


  $result = $db->query($sql);

  // arrays of rows
  $tableData = array();
  while ($row = $result -> fetchArray (SQLITE3_ASSOC)) {
    $tableData[] = array ('order' => $row['dev_Order'],
                          'name'  => $row['dev_Location']);
  }

  // Return json
  echo (json_encode ($tableData));
}


//------------------------------------------------------------------------------
//  Status Where conditions
//------------------------------------------------------------------------------
function getDeviceCondition ($deviceStatus) {
  switch ($deviceStatus) {
    case 'all':        return 'WHERE dev_Archived=0';                                                      break;
    case 'connected':  return 'WHERE dev_Archived=0 AND dev_PresentLastScan=1';                            break;
    case 'favorites':  return 'WHERE dev_Archived=0 AND dev_Favorite=1';                                   break;
    case 'new':        return 'WHERE dev_Archived=0 AND dev_NewDevice=1';                                  break;
    case 'down':       return 'WHERE dev_Archived=0 AND dev_AlertDeviceDown=1 AND dev_PresentLastScan=0';  break;
    case 'archived':   return 'WHERE dev_Archived=1';                                                      break;
    default:           return 'WHERE 1=0';                                                                 break;
  }
}


?>