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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.liquidcheck.internal;
  14
  15 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.CONTENT_CHANNEL;
  16 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.FILL_INDICATOR_CHANNEL;
  17 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.LEVEL_CHANNEL;
  18 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.MEASURE_CHANNEL;
  19 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.PUMP_TOTAL_RUNS_CHANNEL;
  20 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.PUMP_TOTAL_RUNTIME_CHANNEL;
  21 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.RAW_CONTENT_CHANNEL;
  22 import static org.openhab.binding.liquidcheck.internal.LiquidCheckBindingConstants.RAW_LEVEL_CHANNEL;
  23
  24 import java.util.HashMap;
  25 import java.util.Map;
  26 import java.util.concurrent.ExecutionException;
  27 import java.util.concurrent.ScheduledFuture;
  28 import java.util.concurrent.TimeUnit;
  29 import java.util.concurrent.TimeoutException;
  30
  31 import org.eclipse.jdt.annotation.NonNullByDefault;
  32 import org.eclipse.jdt.annotation.Nullable;
  33 import org.eclipse.jetty.client.HttpClient;
  34 import org.openhab.binding.liquidcheck.internal.httpclient.LiquidCheckHttpClient;
  35 import org.openhab.binding.liquidcheck.internal.json.CommData;
  36 import org.openhab.core.library.types.DecimalType;
  37 import org.openhab.core.library.types.OnOffType;
  38 import org.openhab.core.library.types.QuantityType;
  39 import org.openhab.core.library.unit.SIUnits;
  40 import org.openhab.core.library.unit.Units;
  41 import org.openhab.core.thing.ChannelUID;
  42 import org.openhab.core.thing.Thing;
  43 import org.openhab.core.thing.ThingStatus;
  44 import org.openhab.core.thing.ThingStatusDetail;
  45 import org.openhab.core.thing.binding.BaseThingHandler;
  46 import org.openhab.core.types.Command;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 import com.google.gson.Gson;
  51 import com.google.gson.JsonSyntaxException;
  52
  53 /**
  54  * The {@link LiquidCheckHandler} is responsible for handling commands, which are
  55  * sent to one of the channels.
  56  *
  57  * @author Marcel Goerentz - Initial contribution
  58  */
  59 @NonNullByDefault
  60 public class LiquidCheckHandler extends BaseThingHandler {
  61
  62     private final Logger logger = LoggerFactory.getLogger(LiquidCheckHandler.class);
  63     private final HttpClient httpClient;
  64
  65     private Map<String, String> oldProps = new HashMap<>();
  66
  67     private LiquidCheckConfiguration config = new LiquidCheckConfiguration();
  68     private @Nullable LiquidCheckHttpClient client;
  69
  70     private @Nullable ScheduledFuture<?> polling;
  71
  72     public LiquidCheckHandler(Thing thing, HttpClient httpClient) {
  73         super(thing);
  74         this.httpClient = httpClient;
  75     }
  76
  77     @Override
  78     @SuppressWarnings("null")
  79     public void handleCommand(ChannelUID channelUID, Command command) {
  80         if (channelUID.getId().equals(MEASURE_CHANNEL)) {
  81             if (command instanceof OnOffType) {
  82                 try {
  83                     LiquidCheckHttpClient client = this.client;
  84                     if (client != null && client.isConnected()) {
  85                         String response = client.measureCommand();
  86                         CommData commandResponse = new Gson().fromJson(response, CommData.class);
  87                         if (commandResponse != null && !"".equals(commandResponse.header.name)) {
  88                             if (!"success".equals(commandResponse.context.status)) {
  89                                 logger.warn("Starting the measurement was not successful!");
  90                             }
  91                         } else {
  92                             logger.debug("The object commandResponse is null!");
  93                         }
  94                     }
  95                 } catch (TimeoutException | ExecutionException | JsonSyntaxException e) {
  96                     logger.warn("This went wrong in handleCommand: {}", e.getMessage());
  97                 } catch (InterruptedException e) {
  98                     Thread.currentThread().interrupt();
  99                 }
 100                 updateState(channelUID, OnOffType.OFF);
 101             }
 102         }
 103     }
 104
 105     @Override
 106     public void initialize() {
 107         config = getConfigAs(LiquidCheckConfiguration.class);
 108         oldProps = thing.getProperties();
 109
 110         updateStatus(ThingStatus.UNKNOWN);
 111         var client = new LiquidCheckHttpClient(config, httpClient);
 112         this.client = client;
 113         PollingForData pollingRunnable = new PollingForData(client);
 114         polling = scheduler.scheduleWithFixedDelay(pollingRunnable, 0, config.refreshInterval, TimeUnit.SECONDS);
 115     }
 116
 117     @Override
 118     public void dispose() {
 119         ScheduledFuture<?> polling = this.polling;
 120         if (null != polling) {
 121             polling.cancel(true);
 122             this.polling = null;
 123         }
 124     }
 125
 126     private class PollingForData implements Runnable {
 127
 128         private final LiquidCheckHttpClient client;
 129
 130         public PollingForData(LiquidCheckHttpClient client) {
 131             this.client = client;
 132         }
 133
 134         @Override
 135         public void run() {
 136             try {
 137                 String jsonString = client.pollData();
 138                 CommData response = new Gson().fromJson(jsonString, CommData.class);
 139                 if (response != null && !"".equals(response.header.messageId)) {
 140                     Map<String, String> properties = response.createPropertyMap();
 141                     if (!oldProps.equals(properties)) {
 142                         oldProps = properties;
 143                         updateProperties(properties);
 144                     }
 145                     updateState(CONTENT_CHANNEL, new QuantityType<>(response.payload.measure.content, Units.LITRE));
 146                     updateState(LEVEL_CHANNEL, new QuantityType<>(response.payload.measure.level, SIUnits.METRE));
 147                     updateState(RAW_CONTENT_CHANNEL,
 148                             new QuantityType<>(response.payload.measure.raw.content, Units.LITRE));
 149
 150                     updateState(RAW_LEVEL_CHANNEL,
 151                             new QuantityType<>(response.payload.measure.raw.level, SIUnits.METRE));
 152
 153                     updateState(PUMP_TOTAL_RUNS_CHANNEL, new DecimalType(response.payload.system.pump.totalRuns));
 154                     updateState(PUMP_TOTAL_RUNTIME_CHANNEL,
 155                             new QuantityType<>(response.payload.system.pump.totalRuntime, Units.SECOND));
 156                     if (config.maxContent > 1) {
 157                         double fillIndicator = response.payload.measure.content / config.maxContent * 100;
 158                         updateState(FILL_INDICATOR_CHANNEL, new QuantityType<>(fillIndicator, Units.PERCENT));
 159                     }
 160                     if (!thing.getStatus().equals(ThingStatus.ONLINE)) {
 161                         updateStatus(ThingStatus.ONLINE);
 162                     }
 163                 } else {
 164                     logger.debug("Json is null");
 165                 }
 166             } catch (TimeoutException | ExecutionException | JsonSyntaxException e) {
 167                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 168             } catch (InterruptedException e) {
 169                 Thread.currentThread().interrupt();
 170             }
 171         }
 172     }
 173 }