<?php
namespace ZM;
require_once('database.php');
require_once('Server.php');
require_once('Object.php');
require_once('Control.php');
require_once('Storage.php');

class Monitor extends ZM_Object {
  protected static $table = 'Monitors';

protected $defaults = array(
  'Id' => null,
  'Name' => '',
  'ServerId' => 0,
  'StorageId' => 0,
  'Type'      =>  'Ffmpeg',
  'Function'  => 'None',
  'Enabled'   => array('type'=>'boolean','default'=>1),
  'LinkedMonitors' => array('type'=>'set', 'default'=>null),
  'Triggers'  =>  array('type'=>'set','default'=>''),
  'Device'  =>  '',
  'Channel' =>  0,
  'Format'  =>  '0',
  'V4LMultiBuffer'  =>  null,
  'V4LCapturesPerFrame' =>  null,
  'Protocol'  =>  null,
  'Method'  =>  '',
  'Host'  =>  null,
  'Port'  =>  '',
  'SubPath' =>  '',
  'Path'  =>  null,
  'Options' =>  null,
  'User'  =>  null,
  'Pass'  =>  null,
  // These are NOT NULL default 0 in the db, but 0 is not a valid value. FIXME
  'Width' => null,
  'Height' => null,
  'Colours' => 1,
  'Palette' =>  '0',
  'Orientation' => null,
  'Deinterlacing' =>  0,
  'DecoderHWAccelName'  =>  null,
  'DecoderHWAccelDevice'  =>  null,
  'SaveJPEGs' =>  3,
  'VideoWriter' =>  '0',
  'OutputCodec' =>  null,
  'OutputContainer' => null,
  'EncoderParameters' => null,
  'RecordAudio' =>  array('type'=>'boolean', 'default'=>0),
  'RTSPDescribe'  =>  array('type'=>'boolean','default'=>0),
  'Brightness'  =>  -1,
  'Contrast'    =>  -1,
  'Hue'         =>  -1,
  'Colour'      =>  -1,
  'EventPrefix' =>  'Event-',
  'LabelFormat' =>  null,
  'LabelX'      =>  0,
  'LabelY'      =>  0,
  'LabelSize'   =>  1,
  'ImageBufferCount'  =>  100,
  'WarmupCount' =>  0,
  'PreEventCount' =>  0,
  'PostEventCount'  =>  0,
  'StreamReplayBuffer'  => 0,
  'AlarmFrameCount'     =>  1,
  'SectionLength'       =>  600,
  'MinSectionLength'    =>  10,
  'FrameSkip'           =>  0,
  'MotionFrameSkip'     =>  0,
  'AnalysisFPSLimit'  =>  null,
  'AnalysisUpdateDelay'  =>  0,
  'MaxFPS' => null,
  'AlarmMaxFPS' => null,
  'FPSReportInterval'  =>  100,
  'RefBlendPerc'        =>  6,
  'AlarmRefBlendPerc'   =>  6,
  'Controllable'        =>  array('type'=>'boolean','default'=>0),
  'ControlId' =>  null,
  'ControlDevice' =>  null,
  'ControlAddress'  =>  null,
  'AutoStopTimeout' => null,
  'TrackMotion'     =>  array('type'=>'boolean','default'=>0),
  'TrackDelay'      =>  null,
  'ReturnLocation'  =>  -1,
  'ReturnDelay'     =>  null,
  'DefaultRate' =>  100,
  'DefaultScale'  =>  100,
  'SignalCheckPoints' =>  0,
  'SignalCheckColour' =>  '#0000BE',
  'WebColour'   =>  'red',
  'Exif'    =>  array('type'=>'boolean','default'=>0),
  'Sequence'  =>  null,
  'TotalEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'TotalEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'HourEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'HourEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'DayEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'DayEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'WeekEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'WeekEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'MonthEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'MonthEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'ArchivedEvents' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'ArchivedEventDiskSpace' =>  array('type'=>'integer', 'default'=>null, 'do_not_update'=>1),
  'ZoneCount' =>  0,
  'Refresh' => null,
  'DefaultCodec'  => 'auto',
  'GroupIds'    => array('default'=>array(), 'do_not_update'=>1),
);
private $status_fields = array(
  'Status'  =>  null,
  'AnalysisFPS' => null,
  'CaptureFPS' => null,
  'CaptureBandwidth' => null,
);

  public function Control() {
    if ( !array_key_exists('Control', $this) ) {
      if ( $this->ControlId() )
        $this->{'Control'} = Control::find_one(array('Id'=>$this->{'ControlId'}));
      else
        Error("No ControlId");
      if ( !(array_key_exists('Control', $this) and $this->{'Control'} ) )
        $this->{'Control'} = new Control();
    }
    return $this->{'Control'};
  }

  public function Server() {
    return new Server($this->{'ServerId'});
  }

  public function __call($fn, array $args){
    if ( count($args) ) {
      if ( is_array($this->defaults[$fn]) and $this->defaults[$fn]['type'] == 'set' ) {
        $this->{$fn} = is_array($args[0]) ? implode(',',$args[0]) : $args[0];
      } else {
        $this->{$fn} = $args[0];
      }
    }
    if ( array_key_exists($fn, $this) ) {
      return $this->{$fn};
    } else if ( array_key_exists($fn, $this->defaults) ) {
      if ( is_array($this->defaults[$fn]) ) {
        return $this->defaults[$fn]['default'];
      }
      return $this->defaults[$fn];
    } else if ( array_key_exists($fn, $this->status_fields) ) {
      $sql = 'SELECT Status,CaptureFPS,AnalysisFPS,CaptureBandwidth
        FROM Monitor_Status WHERE MonitorId=?';
      $row = dbFetchOne($sql, NULL, array($this->{'Id'}));
      if ( !$row ) {
        Error('Unable to load Monitor record for Id='.$this->{'Id'});
      } else {
        foreach ($row as $k => $v) {
          $this->{$k} = $v;
        }
      }
      return $this->{$fn};
    } else {
      $backTrace = debug_backtrace();
      $file = $backTrace[1]['file'];
      $line = $backTrace[1]['line'];
      Warning("Unknown function call Monitor->$fn from $file:$line");
    }
  }

  public function getStreamSrc($args, $querySep='&amp;') {

    $streamSrc = $this->Server()->UrlToZMS(
      ZM_MIN_STREAMING_PORT ?
      ZM_MIN_STREAMING_PORT+$this->{'Id'} :
      null);

    $args['monitor'] = $this->{'Id'};

    if ( ZM_OPT_USE_AUTH ) {
      if ( ZM_AUTH_RELAY == 'hashed' ) {
        $args['auth'] = generateAuthHash(ZM_AUTH_HASH_IPS);
      } elseif ( ZM_AUTH_RELAY == 'plain' ) {
        $args['user'] = $_SESSION['username'];
        $args['pass'] = $_SESSION['password'];
      } elseif ( ZM_AUTH_RELAY == 'none' ) {
        $args['user'] = $_SESSION['username'];
      }
    }
    if ( ( (!isset($args['mode'])) or ( $args['mode'] != 'single' ) ) && !empty($GLOBALS['connkey']) ) {
      $args['connkey'] = $GLOBALS['connkey'];
    }
    if ( ZM_RAND_STREAM ) {
      $args['rand'] = time();
    }

    $streamSrc .= '?'.http_build_query($args, '', $querySep);

    return $streamSrc;
  } // end function getStreamSrc

  public function Width($new = null) {
    if ( $new )
      $this->{'Width'} = $new;

    $field = ( $this->Orientation() == '90' or $this->Orientation() == '270' ) ? 'Height' : 'Width';
    if ( array_key_exists($field, $this) )
      return $this->{$field};
    return $this->defaults{$field};
  } // end function Width

  public function Height($new=null) {
    if ( $new )
      $this->{'Height'} = $new;

    $field = ( $this->Orientation() == '90' or $this->Orientation() == '270' ) ?  'Width' : 'Height';
    if ( array_key_exists($field, $this) )
      return $this->{$field};
    return $this->defaults{$field};
  } // end function Height

  public function SignalCheckColour($new=null) {
    $field = 'SignalCheckColour';
    if ($new) {
      $this->{$field} = $new;
    }

    // Validate that it's a valid colour (we seem to allow color names, not just hex).
    // This also helps prevent XSS.
    if (array_key_exists($field, $this) && preg_match('/^[#0-9a-zA-Z]+$/', $this->{$field})) {
      return $this->{$field};
    }
    return $this->defaults{$field};
  } // end function SignalCheckColour

  public static function find( $parameters = array(), $options = array() ) {
    return ZM_Object::_find(get_class(), $parameters, $options);
  }

  public static function find_one( $parameters = array(), $options = array() ) {
    return ZM_Object::_find_one(get_class(), $parameters, $options);
  }

  function zmcControl( $mode=false ) {
    if ( ! $this->{'Id'} ) {
      Warning("Attempt to control a monitor with no Id");
      return;
    }
    if ( (!defined('ZM_SERVER_ID')) or ( array_key_exists('ServerId', $this) and (ZM_SERVER_ID==$this->{'ServerId'}) ) ) {
      if ( $this->Type() == 'Local' ) {
        $zmcArgs = '-d '.$this->{'Device'};
      } else {
        $zmcArgs = '-m '.$this->{'Id'};
      }

      if ( $mode == 'stop' ) {
        daemonControl('stop', 'zmc', $zmcArgs);
      } else {
        if ( $mode == 'restart' ) {
          daemonControl('stop', 'zmc', $zmcArgs);
        }
        if ( $this->{'Function'} != 'None' ) {
          daemonControl('start', 'zmc', $zmcArgs);
        }
      }
    } else if ( $this->ServerId() ) {
      $Server = $this->Server();

      $url = $Server->UrlToApi().'/monitors/daemonControl/'.$this->{'Id'}.'/'.$mode.'/zmc.json';
      if ( ZM_OPT_USE_AUTH ) {
        if ( ZM_AUTH_RELAY == 'hashed' ) {
          $url .= '?auth='.generateAuthHash( ZM_AUTH_HASH_IPS );
        } elseif ( ZM_AUTH_RELAY == 'plain' ) {
          $url = '?user='.$_SESSION['username'];
          $url = '?pass='.$_SESSION['password'];
        } elseif ( ZM_AUTH_RELAY == 'none' ) {
          $url = '?user='.$_SESSION['username'];
        }
      }
      Logger::Debug("sending command to $url");

      $context  = stream_context_create();
      try {
        $result = file_get_contents($url, false, $context);
        if ($result === FALSE) { /* Handle error */ 
          Error("Error restarting zmc using $url");
        }
      } catch ( Exception $e ) {
        Error("Except $e thrown trying to restart zmc");
      }
    } else {
      Error("Server not assigned to Monitor in a multi-server setup. Please assign a server to the Monitor.");
    }
  } // end function zmcControl

  function zmaControl($mode=false) {
    if ( ! $this->{'Id'} ) {
      Warning("Attempt to control a monitor with no Id");
      return;
    }

    if ( (!defined('ZM_SERVER_ID')) or ( array_key_exists('ServerId', $this) and (ZM_SERVER_ID==$this->{'ServerId'}) ) ) {
      if ( $this->{'Function'} == 'None' || $this->{'Function'} == 'Monitor' || $mode == 'stop' ) {
        if ( ZM_OPT_CONTROL ) {
          daemonControl('stop', 'zmtrack.pl', '-m '.$this->{'Id'});
        }
        daemonControl('stop', 'zma', '-m '.$this->{'Id'});
      } else {
        if ( $mode == 'restart' ) {
          if ( ZM_OPT_CONTROL ) {
            daemonControl('stop', 'zmtrack.pl', '-m '.$this->{'Id'});
          }
          daemonControl('stop', 'zma', '-m '.$this->{'Id'});
        }
        daemonControl('start', 'zma', '-m '.$this->{'Id'});
        if ( ZM_OPT_CONTROL && $this->Controllable() && $this->TrackMotion() && 
          ( $this->{'Function'} == 'Modect' || $this->{'Function'} == 'Mocord' ) ) {
          daemonControl('start', 'zmtrack.pl', '-m '.$this->{'Id'});
        }
        if ( $mode == 'reload' ) {
          daemonControl('reload', 'zma', '-m '.$this->{'Id'});
        }
      }
    } else if ( $this->ServerId() ) {
      $Server = $this->Server();

      $url = ZM_BASE_PROTOCOL . '://'.$Server->Hostname().'/zm/api/monitors/daemonControl/'.$this->{'Id'}.'/'.$mode.'/zma.json';
      if ( ZM_OPT_USE_AUTH ) {
        if ( ZM_AUTH_RELAY == 'hashed' ) {
          $url .= '?auth='.generateAuthHash( ZM_AUTH_HASH_IPS );
        } elseif ( ZM_AUTH_RELAY == 'plain' ) {
          $url = '?user='.$_SESSION['username'];
          $url = '?pass='.$_SESSION['password'];
        } elseif ( ZM_AUTH_RELAY == 'none' ) {
          $url = '?user='.$_SESSION['username'];
        }
      }
      Logger::Debug("sending command to $url");

      $context  = stream_context_create();
      try {
        $result = file_get_contents($url, false, $context);
        if ($result === FALSE) { /* Handle error */
          Error("Error restarting zma using $url");
        }
      } catch ( Exception $e ) {
        Error("Except $e thrown trying to restart zma");
      }
    } else {
      Error('Server not assigned to Monitor in a multi-server setup. Please assign a server to the Monitor.');
    } // end if we are on the recording server
  } // end public function zmaControl

  public function GroupIds( $new='' ) {
    if ( $new != '' ) {
      if ( !is_array($new) ) {
        $this->{'GroupIds'} = array($new);
      } else {
        $this->{'GroupIds'} = $new;
      }
    }

    if ( !array_key_exists('GroupIds', $this) ) {
      if ( array_key_exists('Id', $this) and $this->{'Id'} ) {
        $this->{'GroupIds'} = dbFetchAll('SELECT GroupId FROM Groups_Monitors WHERE MonitorId=?', 'GroupId', array($this->{'Id'}) );
        if ( ! $this->{'GroupIds'} )
          $this->{'GroupIds'} = array();
      } else {
        $this->{'GroupIds'} = array();
      }
    }
    return $this->{'GroupIds'};
  }

  public function delete() {
    $this->zmaControl('stop');
    $this->zmcControl('stop');

    // If fast deletes are on, then zmaudit will clean everything else up later
    // If fast deletes are off and there are lots of events then this step may
    // well time out before completing, in which case zmaudit will still tidy up
    if ( !ZM_OPT_FAST_DELETE ) {
      $markEids = dbFetchAll('SELECT Id FROM Events WHERE MonitorId=?', 'Id', array($this->{'Id'}));
      foreach ($markEids as $markEid)
        deleteEvent($markEid);

      deletePath(ZM_DIR_EVENTS.'/'.basename($this->{'Name'}));
      deletePath(ZM_DIR_EVENTS.'/'.$this->{'Id'});
      $Storage = $this->Storage();
      if ( $Storage->Path() != ZM_DIR_EVENTS ) {
        deletePath($Storage->Path().'/'.basename($this->{'Name'}));
        deletePath($Storage->Path().'/'.$this->{'Id'});
      }
    } // end if !ZM_OPT_FAST_DELETE

    // This is the important stuff
    dbQuery('DELETE FROM Zones WHERE MonitorId = ?', array($this->{'Id'}));
    if ( ZM_OPT_X10 )
      dbQuery('DELETE FROM TriggersX10 WHERE MonitorId=?', array($this->{'Id'}));
    dbQuery('DELETE FROM Monitors WHERE Id = ?', array($this->{'Id'}));
  } // end function delete

  public function Storage($new = null) {
    if ( $new ) {
      $this->{'Storage'} = $new;
    }
    if ( ! ( array_key_exists('Storage', $this) and $this->{'Storage'} ) ) {
      $this->{'Storage'} = isset($this->{'StorageId'}) ? 
        Storage::find_one(array('Id'=>$this->{'StorageId'})) : 
          new Storage(NULL);
      if ( ! $this->{'Storage'} )
        $this->{'Storage'} = new Storage(NULL);
    }
    return $this->{'Storage'};
  }

  public function Source( ) {
    $source = '';
    if ( $this->{'Type'} == 'Local' ) {
      $source = $this->{'Device'}.' ('.$this->{'Channel'}.')';
    } elseif ( $this->{'Type'} == 'Remote' ) {
      $source = preg_replace( '/^.*@/', '', $this->{'Host'} );
      if ( $this->{'Port'} != '80' and $this->{'Port'} != '554' ) {
        $source .= ':'.$this->{'Port'};
      }
    } elseif ( $this->{'Type'} == 'File' || $this->{'Type'} == 'cURL' ) {
      $source = preg_replace( '/^.*\//', '', $this->{'Path'} );
    } elseif ( $this->{'Type'} == 'Ffmpeg' || $this->{'Type'} == 'Libvlc' || $this->{'Type'} == 'WebSite' ) {
      $url_parts = parse_url( $this->{'Path'} );
      if ( ZM_WEB_FILTER_SOURCE == 'Hostname' ) {
        # Filter out everything but the hostname
        if ( isset($url_parts['host']) ) {
          $source = $url_parts['host'];
        } else {
          $source = $this->{'Path'};
        }
      } elseif ( ZM_WEB_FILTER_SOURCE == "NoCredentials" ) {
        # Filter out sensitive and common items
        unset($url_parts['user']);
        unset($url_parts['pass']);
        #unset($url_parts['scheme']);
        unset($url_parts['query']);
        #unset($url_parts['path']);
        if ( isset($url_parts['port']) and ( $url_parts['port'] == '80' or $url_parts['port'] == '554' ) )
          unset($url_parts['port']);
        $source = unparse_url($url_parts);
      } else { # Don't filter anything 
        $source = $this->{'Path'};
      }
    }
    if ( $source == '' ) {
      $source = 'Monitor ' . $this->{'Id'};
    }
    return $source;
  } // end function Source

  public function UrlToIndex() {
    return $this->Server()->UrlToIndex();
    //ZM_MIN_STREAMING_PORT ? (ZM_MIN_STREAMING_PORT+$this->Id()) : null);
  }

} // end class Monitor
?>