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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.deconz.internal.handler;
14
15 import static org.openhab.binding.deconz.internal.BindingConstants.*;
16 import static org.openhab.binding.deconz.internal.Util.*;
17
18 import java.math.BigDecimal;
19 import java.util.*;
20 import java.util.stream.Collectors;
21
22 import org.eclipse.jdt.annotation.NonNullByDefault;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.openhab.binding.deconz.internal.CommandDescriptionProvider;
25 import org.openhab.binding.deconz.internal.StateDescriptionProvider;
26 import org.openhab.binding.deconz.internal.Util;
27 import org.openhab.binding.deconz.internal.dto.DeconzBaseMessage;
28 import org.openhab.binding.deconz.internal.dto.LightMessage;
29 import org.openhab.binding.deconz.internal.dto.LightState;
30 import org.openhab.binding.deconz.internal.types.ResourceType;
31 import org.openhab.core.library.types.*;
32 import org.openhab.core.thing.ChannelUID;
33 import org.openhab.core.thing.Thing;
34 import org.openhab.core.thing.ThingStatus;
35 import org.openhab.core.thing.ThingStatusDetail;
36 import org.openhab.core.thing.ThingTypeUID;
37 import org.openhab.core.thing.binding.builder.ChannelBuilder;
38 import org.openhab.core.thing.binding.builder.ThingBuilder;
39 import org.openhab.core.types.*;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
42
43 import com.google.gson.Gson;
44
45 /**
46  * This light thing doesn't establish any connections, that is done by the bridge Thing.
47  *
48  * It waits for the bridge to come online, grab the websocket connection and bridge configuration
49  * and registers to the websocket connection as a listener.
50  *
51  * A REST API call is made to get the initial light/rollershutter state.
52  *
53  * Every light and rollershutter is supported by this Thing, because a unified state is kept
54  * in {@link #lightStateCache}. Every field that got received by the REST API for this specific
55  * sensor is published to the framework.
56  *
57  * @author Jan N. Klug - Initial contribution
58  */
59 @NonNullByDefault
60 public class LightThingHandler extends DeconzBaseThingHandler {
61     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPE_UIDS = Set.of(THING_TYPE_COLOR_TEMPERATURE_LIGHT,
62             THING_TYPE_DIMMABLE_LIGHT, THING_TYPE_COLOR_LIGHT, THING_TYPE_EXTENDED_COLOR_LIGHT, THING_TYPE_ONOFF_LIGHT,
63             THING_TYPE_WINDOW_COVERING, THING_TYPE_WARNING_DEVICE, THING_TYPE_DOORLOCK);
64
65     private static final long DEFAULT_COMMAND_EXPIRY_TIME = 250; // in ms
66     private static final int BRIGHTNESS_DIM_STEP = 26; // ~ 10%
67
68     private final Logger logger = LoggerFactory.getLogger(LightThingHandler.class);
69
70     private final StateDescriptionProvider stateDescriptionProvider;
71     private final CommandDescriptionProvider commandDescriptionProvider;
72
73     private long lastCommandExpireTimestamp = 0;
74     private boolean needsPropertyUpdate = false;
75
76     /**
77      * The light state. Contains all possible fields for all supported lights
78      */
79     private LightState lightStateCache = new LightState();
80     private LightState lastCommand = new LightState();
81     private String colorMode = "";
82
83     // set defaults, we can override them later if we receive better values
84     private int ctMax = ZCL_CT_MAX;
85     private int ctMin = ZCL_CT_MIN;
86
87     public LightThingHandler(Thing thing, Gson gson, StateDescriptionProvider stateDescriptionProvider,
88             CommandDescriptionProvider commandDescriptionProvider) {
89         super(thing, gson, ResourceType.LIGHTS);
90         this.stateDescriptionProvider = stateDescriptionProvider;
91         this.commandDescriptionProvider = commandDescriptionProvider;
92     }
93
94     @Override
95     public void initialize() {
96         if (thing.getThingTypeUID().equals(THING_TYPE_COLOR_TEMPERATURE_LIGHT)
97                 || thing.getThingTypeUID().equals(THING_TYPE_EXTENDED_COLOR_LIGHT)) {
98             try {
99                 Map<String, String> properties = thing.getProperties();
100                 String ctMaxString = properties.get(PROPERTY_CT_MAX);
101                 ctMax = ctMaxString == null ? ZCL_CT_MAX : Integer.parseInt(ctMaxString);
102                 String ctMinString = properties.get(PROPERTY_CT_MIN);
103                 ctMin = ctMinString == null ? ZCL_CT_MIN : Integer.parseInt(ctMinString);
104
105                 // minimum and maximum are inverted due to mired/kelvin conversion!
106                 StateDescription stateDescription = StateDescriptionFragmentBuilder.create()
107                         .withMinimum(new BigDecimal(miredToKelvin(ctMax)))
108                         .withMaximum(new BigDecimal(miredToKelvin(ctMin))).build().toStateDescription();
109                 if (stateDescription != null) {
110                     stateDescriptionProvider.setDescription(new ChannelUID(thing.getUID(), CHANNEL_COLOR_TEMPERATURE),
111                             stateDescription);
112                 } else {
113                     logger.warn("Failed to create state description in thing {}", thing.getUID());
114                 }
115             } catch (NumberFormatException e) {
116                 needsPropertyUpdate = true;
117             }
118         }
119         super.initialize();
120     }
121
122     @Override
123     public void handleCommand(ChannelUID channelUID, Command command) {
124         if (command instanceof RefreshType) {
125             valueUpdated(channelUID.getId(), lightStateCache);
126             return;
127         }
128
129         LightState newLightState = new LightState();
130         Boolean currentOn = lightStateCache.on;
131         Integer currentBri = lightStateCache.bri;
132
133         switch (channelUID.getId()) {
134             case CHANNEL_ALERT:
135                 if (command instanceof StringType) {
136                     newLightState.alert = command.toString();
137                 } else {
138                     return;
139                 }
140                 break;
141             case CHANNEL_EFFECT:
142                 if (command instanceof StringType) {
143                     // effect command only allowed for lights that are turned on
144                     newLightState.on = true;
145                     newLightState.effect = command.toString();
146                 } else {
147                     return;
148                 }
149                 break;
150             case CHANNEL_EFFECT_SPEED:
151                 if (command instanceof DecimalType) {
152                     newLightState.on = true;
153                     newLightState.effectSpeed = Util.constrainToRange(((DecimalType) command).intValue(), 0, 10);
154                 } else {
155                     return;
156                 }
157                 break;
158             case CHANNEL_SWITCH:
159             case CHANNEL_LOCK:
160                 if (command instanceof OnOffType) {
161                     newLightState.on = (command == OnOffType.ON);
162                 } else {
163                     return;
164                 }
165                 break;
166             case CHANNEL_BRIGHTNESS:
167             case CHANNEL_COLOR:
168                 if (command instanceof OnOffType) {
169                     newLightState.on = (command == OnOffType.ON);
170                 } else if (command instanceof IncreaseDecreaseType) {
171                     // try to get best value for current brightness
172                     int oldBri = currentBri != null ? currentBri
173                             : (Boolean.TRUE.equals(currentOn) ? BRIGHTNESS_MAX : BRIGHTNESS_MIN);
174                     if (command.equals(IncreaseDecreaseType.INCREASE)) {
175                         newLightState.bri = Util.constrainToRange(oldBri + BRIGHTNESS_DIM_STEP, BRIGHTNESS_MIN,
176                                 BRIGHTNESS_MAX);
177                     } else {
178                         newLightState.bri = Util.constrainToRange(oldBri - BRIGHTNESS_DIM_STEP, BRIGHTNESS_MIN,
179                                 BRIGHTNESS_MAX);
180                     }
181                 } else if (command instanceof HSBType) {
182                     HSBType hsbCommand = (HSBType) command;
183                     if ("xy".equals(colorMode)) {
184                         PercentType[] xy = hsbCommand.toXY();
185                         if (xy.length < 2) {
186                             logger.warn("Failed to convert {} to xy-values", command);
187                         }
188                         newLightState.xy = new double[] { xy[0].doubleValue() / 100.0, xy[1].doubleValue() / 100.0 };
189                         newLightState.bri = Util.fromPercentType(hsbCommand.getBrightness());
190                     } else {
191                         // default is colormode "hs" (used when colormode "hs" is set or colormode is unknown)
192                         newLightState.bri = Util.fromPercentType(hsbCommand.getBrightness());
193                         newLightState.hue = (int) (hsbCommand.getHue().doubleValue() * HUE_FACTOR);
194                         newLightState.sat = Util.fromPercentType(hsbCommand.getSaturation());
195                     }
196                 } else if (command instanceof PercentType) {
197                     newLightState.bri = Util.fromPercentType((PercentType) command);
198                 } else if (command instanceof DecimalType) {
199                     newLightState.bri = ((DecimalType) command).intValue();
200                 } else {
201                     return;
202                 }
203
204                 // send on/off state together with brightness if not already set or unknown
205                 Integer newBri = newLightState.bri;
206                 if (newBri != null) {
207                     newLightState.on = (newBri > 0);
208                 }
209
210                 // fix sending bri=0 when light is already off
211                 if (newBri != null && newBri == 0 && currentOn != null && !currentOn) {
212                     return;
213                 }
214
215                 Double transitiontime = config.transitiontime;
216                 if (transitiontime != null) {
217                     // value is in 1/10 seconds
218                     newLightState.transitiontime = (int) Math.round(10 * transitiontime);
219                 }
220                 break;
221             case CHANNEL_COLOR_TEMPERATURE:
222                 if (command instanceof DecimalType) {
223                     int miredValue = kelvinToMired(((DecimalType) command).intValue());
224                     newLightState.ct = constrainToRange(miredValue, ctMin, ctMax);
225                     newLightState.on = true;
226                 }
227                 break;
228             case CHANNEL_POSITION:
229                 if (command instanceof UpDownType) {
230                     newLightState.on = (command == UpDownType.DOWN);
231                 } else if (command == StopMoveType.STOP) {
232                     if (currentOn != null && currentOn && currentBri != null && currentBri <= BRIGHTNESS_MAX) {
233                         // going down or currently stop (254 because of rounding error)
234                         newLightState.on = true;
235                     } else if (currentOn != null && !currentOn && currentBri != null && currentBri > BRIGHTNESS_MIN) {
236                         // going up or currently stopped
237                         newLightState.on = false;
238                     }
239                 } else if (command instanceof PercentType) {
240                     newLightState.bri = fromPercentType((PercentType) command);
241                 } else {
242                     return;
243                 }
244                 break;
245             default:
246                 // no supported command
247                 return;
248         }
249
250         Boolean newOn = newLightState.on;
251         if (newOn != null && !newOn) {
252             // if light shall be off, no other commands are allowed, so reset the new light state
253             newLightState.clear();
254             newLightState.on = false;
255         }
256
257         sendCommand(newLightState, command, channelUID, () -> {
258             Integer transitionTime = newLightState.transitiontime;
259             lastCommandExpireTimestamp = System.currentTimeMillis()
260                     + (transitionTime != null ? transitionTime : DEFAULT_COMMAND_EXPIRY_TIME);
261             lastCommand = newLightState;
262         });
263     }
264
265     @Override
266     protected void processStateResponse(DeconzBaseMessage stateResponse) {
267         if (!(stateResponse instanceof LightMessage)) {
268             return;
269         }
270
271         LightMessage lightMessage = (LightMessage) stateResponse;
272
273         if (needsPropertyUpdate) {
274             // if we did not receive an ctmin/ctmax, then we probably don't need it
275             needsPropertyUpdate = false;
276
277             Integer ctmax = lightMessage.ctmax;
278             Integer ctmin = lightMessage.ctmin;
279             if (ctmin != null && ctmax != null) {
280                 Map<String, String> properties = new HashMap<>(thing.getProperties());
281                 properties.put(PROPERTY_CT_MAX, Integer.toString(Util.constrainToRange(ctmax, ZCL_CT_MIN, ZCL_CT_MAX)));
282                 properties.put(PROPERTY_CT_MIN, Integer.toString(Util.constrainToRange(ctmin, ZCL_CT_MIN, ZCL_CT_MAX)));
283                 updateProperties(properties);
284             }
285         }
286
287         LightState lightState = lightMessage.state;
288         if (lightState != null && lightState.effect != null) {
289             checkAndUpdateEffectChannels(lightMessage);
290         }
291
292         messageReceived(config.id, lightMessage);
293     }
294
295     private enum EffectLightModel {
296         LIDL_MELINARA,
297         TINT_MUELLER,
298         UNKNOWN;
299     }
300
301     private void checkAndUpdateEffectChannels(LightMessage lightMessage) {
302         EffectLightModel model = EffectLightModel.UNKNOWN;
303         // try to determine which model we have
304         if (lightMessage.manufacturername.equals("_TZE200_s8gkrkxk")) {
305             // the LIDL Melinara string does not report a proper model name
306             model = EffectLightModel.LIDL_MELINARA;
307         } else if (lightMessage.manufacturername.equals("MLI")) {
308             model = EffectLightModel.TINT_MUELLER;
309         } else {
310             logger.info("Could not determine effect light type for thing {}, please request adding support on GitHub.",
311                     thing.getUID());
312         }
313
314         ChannelUID effectChannelUID = new ChannelUID(thing.getUID(), CHANNEL_EFFECT);
315         ChannelUID effectSpeedChannelUID = new ChannelUID(thing.getUID(), CHANNEL_EFFECT_SPEED);
316
317         if (thing.getChannel(CHANNEL_EFFECT) == null) {
318             ThingBuilder thingBuilder = editThing();
319             thingBuilder.withChannel(
320                     ChannelBuilder.create(effectChannelUID, "String").withType(CHANNEL_EFFECT_TYPE_UID).build());
321             if (model == EffectLightModel.LIDL_MELINARA) {
322                 // additional channels
323                 thingBuilder.withChannel(ChannelBuilder.create(effectSpeedChannelUID, "Number")
324                         .withType(CHANNEL_EFFECT_SPEED_TYPE_UID).build());
325             }
326             updateThing(thingBuilder.build());
327         }
328
329         switch (model) {
330             case LIDL_MELINARA:
331                 List<String> options = List.of("none", "steady", "snow", "rainbow", "snake", "tinkle", "fireworks",
332                         "flag", "waves", "updown", "vintage", "fading", "collide", "strobe", "sparkles", "carnival",
333                         "glow");
334                 commandDescriptionProvider.setDescription(effectChannelUID,
335                         CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
336                 break;
337             case TINT_MUELLER:
338                 options = List.of("none", "colorloop", "sunset", "party", "worklight", "campfire", "romance",
339                         "nightlight");
340                 commandDescriptionProvider.setDescription(effectChannelUID,
341                         CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
342                 break;
343             default:
344                 options = List.of("none", "colorloop");
345                 commandDescriptionProvider.setDescription(effectChannelUID,
346                         CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
347
348         }
349     }
350
351     private List<CommandOption> toCommandOptionList(List<String> options) {
352         return options.stream().map(c -> new CommandOption(c, c)).collect(Collectors.toList());
353     }
354
355     private void valueUpdated(String channelId, LightState newState) {
356         Integer bri = newState.bri;
357         Integer hue = newState.hue;
358         Integer sat = newState.sat;
359         Boolean on = newState.on;
360
361         switch (channelId) {
362             case CHANNEL_ALERT:
363                 String alert = newState.alert;
364                 if (alert != null) {
365                     updateState(channelId, new StringType(alert));
366                 }
367                 break;
368             case CHANNEL_SWITCH:
369             case CHANNEL_LOCK:
370                 if (on != null) {
371                     updateState(channelId, OnOffType.from(on));
372                 }
373                 break;
374             case CHANNEL_COLOR:
375                 if (on != null && on == false) {
376                     updateState(channelId, OnOffType.OFF);
377                 } else if (bri != null && "xy".equals(newState.colormode)) {
378                     final double @Nullable [] xy = newState.xy;
379                     if (xy != null && xy.length == 2) {
380                         HSBType color = HSBType.fromXY((float) xy[0], (float) xy[1]);
381                         updateState(channelId, new HSBType(color.getHue(), color.getSaturation(), toPercentType(bri)));
382                     }
383                 } else if (bri != null && hue != null && sat != null) {
384                     updateState(channelId,
385                             new HSBType(new DecimalType(hue / HUE_FACTOR), toPercentType(sat), toPercentType(bri)));
386                 }
387                 break;
388             case CHANNEL_BRIGHTNESS:
389                 if (bri != null && on != null && on) {
390                     updateState(channelId, toPercentType(bri));
391                 } else {
392                     updateState(channelId, OnOffType.OFF);
393                 }
394                 break;
395             case CHANNEL_COLOR_TEMPERATURE:
396                 Integer ct = newState.ct;
397                 if (ct != null && ct >= ctMin && ct <= ctMax) {
398                     updateState(channelId, new DecimalType(miredToKelvin(ct)));
399                 }
400                 break;
401             case CHANNEL_POSITION:
402                 if (bri != null) {
403                     updateState(channelId, toPercentType(bri));
404                 }
405                 break;
406             case CHANNEL_EFFECT:
407                 String effect = newState.effect;
408                 if (effect != null) {
409                     updateState(channelId, new StringType(effect));
410                 }
411                 break;
412             case CHANNEL_EFFECT_SPEED:
413                 Integer effectSpeed = newState.effectSpeed;
414                 if (effectSpeed != null) {
415                     updateState(channelId, new DecimalType(effectSpeed));
416                 }
417                 break;
418             default:
419         }
420     }
421
422     @Override
423     public void messageReceived(String sensorID, DeconzBaseMessage message) {
424         if (message instanceof LightMessage) {
425             LightMessage lightMessage = (LightMessage) message;
426             logger.trace("{} received {}", thing.getUID(), lightMessage);
427             LightState lightState = lightMessage.state;
428             if (lightState != null) {
429                 if (lastCommandExpireTimestamp > System.currentTimeMillis()
430                         && !lightState.equalsIgnoreNull(lastCommand)) {
431                     // skip for SKIP_UPDATE_TIMESPAN after last command if lightState is different from command
432                     logger.trace("Ignoring differing update after last command until {}", lastCommandExpireTimestamp);
433                     return;
434                 }
435                 if (colorMode.isEmpty()) {
436                     String cmode = lightState.colormode;
437                     if (cmode != null && ("hs".equals(cmode) || "xy".equals(cmode))) {
438                         // only set the color mode if it is hs or xy, not ct
439                         colorMode = cmode;
440                     }
441                 }
442                 lightStateCache = lightState;
443                 if (Boolean.TRUE.equals(lightState.reachable)) {
444                     updateStatus(ThingStatus.ONLINE);
445                     thing.getChannels().stream().map(c -> c.getUID().getId()).forEach(c -> valueUpdated(c, lightState));
446                 } else {
447                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.GONE, "Not reachable");
448                     thing.getChannels().stream().map(c -> c.getUID()).forEach(c -> updateState(c, UnDefType.UNDEF));
449                 }
450             }
451         }
452     }
453 }