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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.homematic.internal.communicator.virtual;
  14
  15 import static org.openhab.binding.homematic.internal.misc.HomematicConstants.*;
  16
  17 import org.openhab.binding.homematic.internal.model.HmChannel;
  18 import org.openhab.binding.homematic.internal.model.HmDatapoint;
  19 import org.openhab.binding.homematic.internal.model.HmDevice;
  20 import org.openhab.binding.homematic.internal.model.HmParamsetType;
  21 import org.openhab.binding.homematic.internal.model.HmValueType;
  22
  23 /**
  24  * A virtual datapoint that unifies the device and peer rssi datapoints.
  25  *
  26  * @author Gerhard Riegler - Initial contribution
  27  */
  28 public class RssiVirtualDatapointHandler extends AbstractVirtualDatapointHandler {
  29     @Override
  30     public String getName() {
  31         return VIRTUAL_DATAPOINT_NAME_RSSI;
  32     }
  33
  34     @Override
  35     public void initialize(HmDevice device) {
  36         if (isWirelessDevice(device)) {
  37             HmDatapoint dp = addDatapoint(device, 0, getName(), HmValueType.INTEGER, getRssiValue(device.getChannel(0)),
  38                     true);
  39             dp.setUnit("dBm");
  40             dp.setMinValue(Integer.MIN_VALUE);
  41             dp.setMaxValue(Integer.MAX_VALUE);
  42         }
  43     }
  44
  45     @Override
  46     public boolean canHandleEvent(HmDatapoint dp) {
  47         return isWirelessDevice(dp.getChannel().getDevice())
  48                 && (DATAPOINT_NAME_RSSI_DEVICE.equals(dp.getName()) || DATAPOINT_NAME_RSSI_PEER.equals(dp.getName()));
  49     }
  50
  51     @Override
  52     public void handleEvent(VirtualGateway gateway, HmDatapoint dp) {
  53         HmChannel channel = dp.getChannel();
  54         Object value = getRssiValue(channel);
  55         HmDatapoint vdpRssi = getVirtualDatapoint(channel);
  56         vdpRssi.setValue(value);
  57     }
  58
  59     /**
  60      * Returns either the device or the peer rssi value.
  61      */
  62     protected Integer getRssiValue(HmChannel channel) {
  63         HmDatapoint dpRssiDevice = channel.getDatapoint(HmParamsetType.VALUES, DATAPOINT_NAME_RSSI_DEVICE);
  64         HmDatapoint dpRssiPeer = channel.getDatapoint(HmParamsetType.VALUES, DATAPOINT_NAME_RSSI_PEER);
  65
  66         Integer deviceValue = getDatapointValue(dpRssiDevice);
  67         Integer peerValue = getDatapointValue(dpRssiPeer);
  68
  69         if ((deviceValue == null || deviceValue == 0) && peerValue != null) {
  70             return peerValue;
  71         }
  72         return deviceValue;
  73     }
  74
  75     private Integer getDatapointValue(HmDatapoint dp) {
  76         if (dp == null || dp.getValue() == null || (Integer) dp.getValue() == 0) {
  77             return null;
  78         }
  79
  80         return (Integer) dp.getValue();
  81     }
  82
  83     protected boolean isWirelessDevice(HmDevice device) {
  84         return device.getChannel(0).getDatapoint(HmParamsetType.VALUES, DATAPOINT_NAME_RSSI_DEVICE) != null;
  85     }
  86 }