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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.hdpowerview.internal.dto;
  14
  15 import static org.openhab.binding.hdpowerview.internal.dto.CoordinateSystem.*;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.hdpowerview.internal.database.ShadeCapabilitiesDatabase.Capabilities;
  20 import org.openhab.core.library.types.PercentType;
  21 import org.openhab.core.types.State;
  22 import org.openhab.core.types.UnDefType;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * The position of a single shade, as returned by the HD PowerView hub
  28  *
  29  * @author Andy Lintner - Initial contribution
  30  * @author Andrew Fiddian-Green - Added support for secondary rail positions
  31  */
  32 @NonNullByDefault
  33 public class ShadePosition {
  34
  35     private final transient Logger logger = LoggerFactory.getLogger(ShadePosition.class);
  36
  37     /**
  38      * Primary actuator position.
  39      */
  40     private int posKind1;
  41     private int position1;
  42
  43     /**
  44      * Secondary actuator position.
  45      *
  46      * Here we have to use Integer objects rather than just int primitives because these are secondary optional position
  47      * elements in the JSON payload, so the GSON de-serializer might leave them as null.
  48      */
  49     private @Nullable Integer posKind2 = null;
  50     private @Nullable Integer position2 = null;
  51
  52     public ShadePosition() {
  53     }
  54
  55     /**
  56      * Get the shade's State for the given actuator class resp. coordinate system.
  57      *
  58      * @param shadeCapabilities the shade Thing capabilities.
  59      * @param posKindCoords the actuator class (coordinate system) whose state is to be returned.
  60      * @return the current state.
  61      */
  62     public State getState(Capabilities shadeCapabilities, CoordinateSystem posKindCoords) {
  63         State result = getPosition1(shadeCapabilities, posKindCoords);
  64         if (result == UnDefType.UNDEF) {
  65             result = getPosition2(shadeCapabilities, posKindCoords);
  66         }
  67         logger.trace("getState(): capabilities={}, coords={} => result={}", shadeCapabilities, posKindCoords, result);
  68         return result;
  69     }
  70
  71     /**
  72      * Set the shade's position1 value for the given actuator class resp. coordinate system.
  73      *
  74      * @param shadeCapabilities the shade Thing capabilities.
  75      * @param posKindCoords the actuator class (coordinate system) whose state is to be changed.
  76      * @param percent the new position value.
  77      */
  78     private void setPosition1(Capabilities shadeCapabilities, CoordinateSystem posKindCoords, int percentArg) {
  79         int percent = percentArg;
  80         switch (posKindCoords) {
  81             case PRIMARY_POSITION:
  82                 /*
  83                  * Primary rail of a bottom-up shade, or lower rail of a dual action shade: => INVERTED
  84                  */
  85                 if (shadeCapabilities.supportsPrimary() && shadeCapabilities.supportsSecondary()) {
  86                     // on dual rail shades constrain percent to not move the lower rail above the upper
  87                     State secondary = getState(shadeCapabilities, SECONDARY_POSITION);
  88                     if (secondary instanceof PercentType) {
  89                         int secPercent = ((PercentType) secondary).intValue();
  90                         if (percent < secPercent) {
  91                             percent = secPercent;
  92                         }
  93                     }
  94                 }
  95                 posKind1 = posKindCoords.ordinal();
  96                 position1 = MAX_SHADE - (int) Math.round((double) percent / 100 * MAX_SHADE);
  97                 break;
  98
  99             case SECONDARY_POSITION:
 100                 /*
 101                  * Secondary, blackout shade a 'Duolite' shade: => INVERTED
 102                  * Secondary, upper rail of a dual action shade: => NOT INVERTED
 103                  */
 104                 posKind1 = posKindCoords.ordinal();
 105                 if (shadeCapabilities.supportsSecondaryOverlapped()) {
 106                     position1 = MAX_SHADE - (int) Math.round((double) percent / 100 * MAX_SHADE);
 107                 } else {
 108                     position1 = (int) Math.round((double) percent / 100 * MAX_SHADE);
 109                 }
 110                 break;
 111
 112             case VANE_TILT_POSITION:
 113                 /*
 114                  * Vane angle of the primary rail of a bottom-up single action shade: => NOT INVERTED
 115                  */
 116                 posKind1 = posKindCoords.ordinal();
 117                 int max = shadeCapabilities.supportsTilt180() ? MAX_SHADE : MAX_VANE;
 118                 position1 = (int) Math.round((double) percent / 100 * max);
 119                 break;
 120
 121             default:
 122                 posKind1 = CoordinateSystem.NONE.ordinal();
 123                 position1 = 0;
 124         }
 125     }
 126
 127     /**
 128      * Get the shade's position1 State for the given actuator class resp. coordinate system.
 129      *
 130      * @param shadeCapabilities the shade Thing capabilities.
 131      * @param posKindCoords the actuator class (coordinate system) whose state is to be returned.
 132      * @return the State (or UNDEF if not available).
 133      */
 134     private State getPosition1(Capabilities shadeCapabilities, CoordinateSystem posKindCoords) {
 135         switch (posKindCoords) {
 136             case PRIMARY_POSITION:
 137                 /*
 138                  * Primary rail of a bottom-up shade, or lower rail of a dual action shade: => INVERTED
 139                  */
 140                 if (posKindCoords.equals(posKind1)) {
 141                     return new PercentType(100 - (int) Math.round((double) position1 / MAX_SHADE * 100));
 142                 }
 143                 if (VANE_TILT_POSITION.equals(posKind1) && shadeCapabilities.supportsTiltOnClosed()) {
 144                     return PercentType.HUNDRED;
 145                 }
 146                 if (SECONDARY_POSITION.equals(posKind1) && shadeCapabilities.supportsSecondaryOverlapped()) {
 147                     return PercentType.HUNDRED;
 148                 }
 149                 break;
 150
 151             case SECONDARY_POSITION:
 152                 /*
 153                  * Secondary, blackout shade a 'Duolite' shade: => INVERTED
 154                  * Secondary, upper rail of a dual action shade: => NOT INVERTED
 155                  */
 156                 if (posKindCoords.equals(posKind1)) {
 157                     if (shadeCapabilities.supportsSecondaryOverlapped()) {
 158                         return new PercentType(100 - (int) Math.round((double) position1 / MAX_SHADE * 100));
 159                     }
 160                     return new PercentType((int) Math.round((double) position1 / MAX_SHADE * 100));
 161                 }
 162                 if (!SECONDARY_POSITION.equals(posKind1) && shadeCapabilities.supportsSecondaryOverlapped()) {
 163                     return PercentType.ZERO;
 164                 }
 165                 break;
 166
 167             case VANE_TILT_POSITION:
 168                 /*
 169                  * Vane angle of the primary rail of a bottom-up single action shade: => NOT INVERTED
 170                  *
 171                  * If the shades are not open, the vane position is undefined; if the the shades
 172                  * are exactly open then the vanes are at zero; otherwise return the actual vane
 173                  * position itself
 174                  *
 175                  * note: sometimes the hub may return a value of position1 > MAX_VANE (seems to
 176                  * be a bug in the hub) so we avoid an out of range exception via the Math.min()
 177                  * function below..
 178                  */
 179                 if (posKindCoords.equals(posKind1)) {
 180                     int max = shadeCapabilities.supportsTilt180() ? MAX_SHADE : MAX_VANE;
 181                     return new PercentType((int) Math.round((double) Math.min(position1, max) / max * 100));
 182                 }
 183                 if (PRIMARY_POSITION.equals(posKind1) && shadeCapabilities.supportsTiltOnClosed()) {
 184                     return position1 != 0 ? UnDefType.UNDEF : PercentType.ZERO;
 185                 }
 186                 if (SECONDARY_POSITION.equals(posKind1) && shadeCapabilities.supportsSecondaryOverlapped()
 187                         && shadeCapabilities.supportsTiltOnClosed()) {
 188                     return PercentType.HUNDRED;
 189                 }
 190                 break;
 191
 192             case ERROR_UNKNOWN:
 193             case NONE:
 194                 // fall through, return UNDEF
 195         }
 196         return UnDefType.UNDEF;
 197     }
 198
 199     /**
 200      * Set the shade's position2 value for the given actuator class resp. coordinate system.
 201      *
 202      * @param shadeCapabilities the shade Thing capabilities.
 203      * @param posKindCoords the actuator class (coordinate system) whose state is to be changed.
 204      * @param percent the new position value.
 205      */
 206     private void setPosition2(Capabilities shadeCapabilities, CoordinateSystem posKindCoords, int percentArg) {
 207         int percent = percentArg;
 208         switch (posKindCoords) {
 209             case PRIMARY_POSITION:
 210                 /*
 211                  * Primary rail of a bottom-up shade, or lower rail of a dual action shade: => INVERTED
 212                  */
 213                 posKind2 = posKindCoords.ordinal();
 214                 position2 = Integer.valueOf(MAX_SHADE - (int) Math.round((double) percent / 100 * MAX_SHADE));
 215                 break;
 216
 217             case SECONDARY_POSITION:
 218                 /*
 219                  * Secondary, upper rail of a dual action shade: => NOT INVERTED
 220                  */
 221                 if (shadeCapabilities.supportsPrimary() && shadeCapabilities.supportsSecondary()) {
 222                     // on dual rail shades constrain percent to not move the upper rail below the lower
 223                     State primary = getState(shadeCapabilities, PRIMARY_POSITION);
 224                     if (primary instanceof PercentType) {
 225                         int primaryPercent = ((PercentType) primary).intValue();
 226                         if (percent > primaryPercent) {
 227                             percent = primaryPercent;
 228                         }
 229                     }
 230                 }
 231                 posKind2 = posKindCoords.ordinal();
 232                 position2 = Integer.valueOf((int) Math.round((double) percent / 100 * MAX_SHADE));
 233                 break;
 234
 235             case VANE_TILT_POSITION:
 236                 posKind2 = posKindCoords.ordinal();
 237                 int max = shadeCapabilities.supportsTilt180() ? MAX_SHADE : MAX_VANE;
 238                 position2 = Integer.valueOf((int) Math.round((double) percent / 100 * max));
 239                 break;
 240
 241             default:
 242                 posKind2 = null;
 243                 position2 = null;
 244         }
 245     }
 246
 247     /**
 248      * Get the shade's position2 State for the given actuator class resp. coordinate system.
 249      *
 250      * @param shadeCapabilities the shade Thing capabilities.
 251      * @param posKindCoords the actuator class (coordinate system) whose state is to be returned.
 252      * @return the State (or UNDEF if not available).
 253      */
 254     private State getPosition2(Capabilities shadeCapabilities, CoordinateSystem posKindCoords) {
 255         Integer posKind2 = this.posKind2;
 256         Integer position2 = this.position2;
 257
 258         if (position2 == null || posKind2 == null) {
 259             return UnDefType.UNDEF;
 260         }
 261
 262         switch (posKindCoords) {
 263             case PRIMARY_POSITION:
 264                 /*
 265                  * Primary rail of a bottom-up shade, or lower rail of a dual action shade: => INVERTED
 266                  */
 267                 if (posKindCoords.equals(posKind2)) {
 268                     return new PercentType(100 - (int) Math.round(position2.doubleValue() / MAX_SHADE * 100));
 269                 }
 270                 break;
 271
 272             case SECONDARY_POSITION:
 273                 /*
 274                  * Secondary, upper rail of a dual action shade: => NOT INVERTED
 275                  */
 276                 if (posKindCoords.equals(posKind2)) {
 277                     return new PercentType((int) Math.round(position2.doubleValue() / MAX_SHADE * 100));
 278                 }
 279                 break;
 280
 281             /*
 282              * Vane angle of the primary rail of a bottom-up single action shade: => NOT INVERTED
 283              */
 284             case VANE_TILT_POSITION:
 285                 if (posKindCoords.equals(posKind2)) {
 286                     int max = shadeCapabilities.supportsTilt180() ? MAX_SHADE : MAX_VANE;
 287                     return new PercentType((int) Math.round((double) Math.min(position2.intValue(), max) / max * 100));
 288                 }
 289                 break;
 290
 291             case ERROR_UNKNOWN:
 292             case NONE:
 293                 // fall through, return UNDEF
 294         }
 295         return UnDefType.UNDEF;
 296     }
 297
 298     /**
 299      * Detect if the ShadePosition has a posKindN value indicating potential support for a secondary rail.
 300      *
 301      * @return true if the ShadePosition supports a secondary rail.
 302      */
 303     public boolean secondaryRailDetected() {
 304         return SECONDARY_POSITION.equals(posKind1) || SECONDARY_POSITION.equals(posKind2);
 305     }
 306
 307     /**
 308      * Detect if the ShadePosition has both a posKindN value indicating potential support for tilt, AND a posKindN
 309      * indicating support for a primary rail. i.e. it potentially supports tilt anywhere functionality.
 310      *
 311      * @return true if potential support for tilt anywhere functionality was detected.
 312      */
 313     public boolean tiltAnywhereDetected() {
 314         return ((PRIMARY_POSITION.equals(posKind1)) && (VANE_TILT_POSITION.equals(posKind2))
 315                 || ((PRIMARY_POSITION.equals(posKind2) && (VANE_TILT_POSITION.equals(posKind1)))));
 316     }
 317
 318     /**
 319      * Set the shade's position for the given actuator class resp. coordinate system.
 320      *
 321      * @param shadeCapabilities the shade Thing capabilities.
 322      * @param posKindCoords the actuator class (coordinate system) whose state is to be changed.
 323      * @param percent the new position value.
 324      * @return this object.
 325      */
 326     public ShadePosition setPosition(Capabilities shadeCapabilities, CoordinateSystem posKindCoords, int percent) {
 327         logger.trace("setPosition(): capabilities={}, coords={}, percent={}", shadeCapabilities, posKindCoords,
 328                 percent);
 329         // if necessary swap the order of position1 and position2
 330         if (PRIMARY_POSITION.equals(posKind2) && !PRIMARY_POSITION.equals(posKind1)) {
 331             final Integer posKind2Temp = posKind2;
 332             final Integer position2Temp = position2;
 333             posKind2 = Integer.valueOf(posKind1);
 334             position2 = Integer.valueOf(position1);
 335             posKind1 = posKind2Temp != null ? posKind2Temp.intValue() : NONE.ordinal();
 336             position1 = position2Temp != null ? position2Temp.intValue() : 0;
 337         }
 338
 339         // delete position2 if it has an invalid position kind
 340         if (ERROR_UNKNOWN.equals(posKind2) || NONE.equals(posKind2)) {
 341             posKind2 = null;
 342             position2 = null;
 343         }
 344
 345         // logic to set either position1 or position2
 346         switch (posKindCoords) {
 347             case PRIMARY_POSITION:
 348                 if (shadeCapabilities.supportsPrimary()) {
 349                     setPosition1(shadeCapabilities, posKindCoords, percent);
 350                 }
 351                 break;
 352
 353             case SECONDARY_POSITION:
 354                 if (shadeCapabilities.supportsSecondary()) {
 355                     if (shadeCapabilities.supportsPrimary()) {
 356                         setPosition2(shadeCapabilities, posKindCoords, percent);
 357                     } else {
 358                         setPosition1(shadeCapabilities, posKindCoords, percent);
 359                     }
 360                 } else if (shadeCapabilities.supportsSecondaryOverlapped()) {
 361                     setPosition1(shadeCapabilities, posKindCoords, percent);
 362                 }
 363                 break;
 364
 365             case VANE_TILT_POSITION:
 366                 if (shadeCapabilities.supportsPrimary()) {
 367                     if (shadeCapabilities.supportsTiltOnClosed()) {
 368                         setPosition1(shadeCapabilities, posKindCoords, percent);
 369                     } else if (shadeCapabilities.supportsTiltAnywhere()) {
 370                         setPosition2(shadeCapabilities, posKindCoords, percent);
 371                     }
 372                 } else if (shadeCapabilities.supportsTiltAnywhere()) {
 373                     setPosition1(shadeCapabilities, posKindCoords, percent);
 374                 }
 375                 break;
 376
 377             case ERROR_UNKNOWN:
 378             case NONE:
 379                 // fall through, do nothing
 380         }
 381         return this;
 382     }
 383 }