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   1 /**
   2  * Copyright (c) 2010-2020 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.amazondashbutton.internal.config;
  14
  15 import static org.openhab.binding.amazondashbutton.internal.AmazonDashButtonBindingConstants.*;
  16
  17 import java.net.URI;
  18 import java.util.ArrayList;
  19 import java.util.Collection;
  20 import java.util.Iterator;
  21 import java.util.LinkedHashSet;
  22 import java.util.List;
  23 import java.util.Locale;
  24 import java.util.Set;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.openhab.binding.amazondashbutton.internal.AmazonDashButtonBindingConstants;
  29 import org.openhab.binding.amazondashbutton.internal.pcap.PcapNetworkInterfaceService;
  30 import org.openhab.binding.amazondashbutton.internal.pcap.PcapNetworkInterfaceWrapper;
  31 import org.openhab.core.config.core.ConfigOptionProvider;
  32 import org.openhab.core.config.core.ParameterOption;
  33 import org.openhab.core.thing.ThingTypeUID;
  34 import org.osgi.service.component.annotations.Component;
  35 import org.pcap4j.core.PcapAddress;
  36
  37 /**
  38  * The {@link AmazonDashButtonConfigOptionProvider} is responsible for providing options for the
  39  * {@link AmazonDashButtonBindingConstants#PROPERTY_NETWORK_INTERFACE_NAME} property.
  40  *
  41  * @author Oliver Libutzki - Initial contribution
  42  *
  43  */
  44 @Component(service = ConfigOptionProvider.class)
  45 @NonNullByDefault
  46 public class AmazonDashButtonConfigOptionProvider implements ConfigOptionProvider {
  47
  48     @Override
  49     public @Nullable Collection<ParameterOption> getParameterOptions(URI uri, String param, @Nullable Locale locale) {
  50         return getParameterOptions(uri, param, null, locale);
  51     }
  52
  53     @Override
  54     public @Nullable Collection<ParameterOption> getParameterOptions(URI uri, String param, @Nullable String context,
  55             @Nullable Locale locale) {
  56         if ("thing-type".equals(uri.getScheme())) {
  57             ThingTypeUID thingtypeUID = new ThingTypeUID(uri.getSchemeSpecificPart());
  58             if (thingtypeUID.equals(DASH_BUTTON_THING_TYPE) && PROPERTY_NETWORK_INTERFACE_NAME.equals(param)) {
  59                 return getPcapNetworkInterfacesOptions();
  60             }
  61         }
  62         return null;
  63     }
  64
  65     private Collection<ParameterOption> getPcapNetworkInterfacesOptions() {
  66         Set<PcapNetworkInterfaceWrapper> pcapNetworkInterfaces = PcapNetworkInterfaceService.instance()
  67                 .getNetworkInterfaces();
  68         List<ParameterOption> options = new ArrayList<>();
  69         for (PcapNetworkInterfaceWrapper pcapNetworkInterface : pcapNetworkInterfaces) {
  70             String name = pcapNetworkInterface.getName();
  71
  72             options.add(new ParameterOption(name, getLabel(pcapNetworkInterface)));
  73         }
  74         return options;
  75     }
  76
  77     private String getLabel(PcapNetworkInterfaceWrapper pcapNetworkInterface) {
  78         StringBuilder sb = new StringBuilder(pcapNetworkInterface.getName());
  79         List<PcapAddress> addresses = pcapNetworkInterface.getAddresses();
  80         final String description = pcapNetworkInterface.getDescription();
  81         Set<String> paramStrings = new LinkedHashSet<>();
  82         if (description != null && !description.isEmpty()) {
  83             paramStrings.add(description);
  84         }
  85         for (PcapAddress address : addresses) {
  86             paramStrings.add(address.getAddress().toString().substring(1));
  87
  88         }
  89
  90         boolean hasParams = !paramStrings.isEmpty();
  91         if (hasParams) {
  92             sb.append(" (");
  93         }
  94
  95         for (Iterator<String> paramIterator = paramStrings.iterator(); paramIterator.hasNext();) {
  96             String addressString = paramIterator.next();
  97             sb.append(addressString);
  98             if (paramIterator.hasNext()) {
  99                 sb.append(", ");
 100             }
 101         }
 102         if (hasParams) {
 103             sb.append(")");
 104         }
 105         return sb.toString();
 106     }
 107 }