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   1 /**
   2  * Copyright (c) 2010-2021 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.lcn.internal.subhandler;
  14
  15 import java.util.Collection;
  16 import java.util.List;
  17 import java.util.regex.Matcher;
  18 import java.util.regex.Pattern;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.openhab.binding.lcn.internal.LcnBindingConstants;
  22 import org.openhab.binding.lcn.internal.LcnModuleHandler;
  23 import org.openhab.binding.lcn.internal.common.LcnChannelGroup;
  24 import org.openhab.binding.lcn.internal.common.LcnDefs;
  25 import org.openhab.binding.lcn.internal.common.LcnException;
  26 import org.openhab.binding.lcn.internal.common.PckGenerator;
  27 import org.openhab.binding.lcn.internal.common.Variable;
  28 import org.openhab.binding.lcn.internal.common.Variable.Type;
  29 import org.openhab.binding.lcn.internal.connection.ModInfo;
  30 import org.openhab.core.library.types.DecimalType;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  * Handles Commands and State changes of variables of an LCN module.
  36  *
  37  * @author Fabian Wolter - Initial contribution
  38  */
  39 @NonNullByDefault
  40 public class LcnModuleVariableSubHandler extends AbstractLcnModuleVariableSubHandler {
  41     private final Logger logger = LoggerFactory.getLogger(LcnModuleVariableSubHandler.class);
  42     private static final Pattern PATTERN = Pattern
  43             .compile(LcnBindingConstants.ADDRESS_REGEX + "\\.A(?<id>\\d{3})(?<value>\\d+)");
  44
  45     public LcnModuleVariableSubHandler(LcnModuleHandler handler, ModInfo info) {
  46         super(handler, info);
  47     }
  48
  49     @Override
  50     public void handleCommandDecimal(DecimalType command, LcnChannelGroup channelGroup, int number)
  51             throws LcnException {
  52         Variable variable = getVariable(channelGroup, number);
  53         try {
  54             int relativeChange = getRelativeChange(command, variable);
  55             handler.sendPck(PckGenerator.setVariableRelative(variable, LcnDefs.RelVarRef.CURRENT, relativeChange));
  56
  57             // request new value, if the module doesn't send it on itself
  58             if (info.getFirmwareVersion().map(v -> variable.shouldPollStatusAfterCommand(v)).orElse(true)) {
  59                 info.refreshVariable(variable);
  60             }
  61         } catch (LcnException e) {
  62             // current value unknown for some reason, refresh it in case we come again here
  63             info.refreshVariable(variable);
  64             throw e;
  65         }
  66     }
  67
  68     @Override
  69     public void handleStatusMessage(Matcher matcher) throws LcnException {
  70         Variable variable;
  71         if (matcher.pattern() == PATTERN) {
  72             variable = Variable.varIdToVar(Integer.parseInt(matcher.group("id")) - 1);
  73         } else if (matcher.pattern() == LcnBindingConstants.MEASUREMENT_PATTERN_BEFORE_2013) {
  74             variable = info.getLastRequestedVarWithoutTypeInResponse();
  75
  76             if (variable == Variable.UNKNOWN || variable.getType() != Type.VARIABLE) {
  77                 return;
  78             }
  79         } else {
  80             logger.warn("Unexpected pattern: {}", matcher.pattern());
  81             return;
  82         }
  83         fireUpdateAndReset(matcher, "", variable);
  84     }
  85
  86     @Override
  87     public Collection<Pattern> getPckStatusMessagePatterns() {
  88         return List.of(PATTERN, LcnBindingConstants.MEASUREMENT_PATTERN_BEFORE_2013);
  89     }
  90 }