[auromation] Fix createTimer for DSL rules (#3172)

* Fix createTimer for DSL rules

Signed-off-by: Jan N. Klug <github@klug.nrw>

bundles/org.openhab.core.model.script/src/org/openhab/core/model/script/actions/ScriptExecution.java

@@ -16,7 +16,6 @@ import org.eclipse.jdt.annotation.NonNullByDefault;
 import org.eclipse.jdt.annotation.Nullable;
 import org.eclipse.xtext.xbase.XExpression;
 import org.eclipse.xtext.xbase.lib.Procedures;
-import org.openhab.core.automation.module.script.action.Timer;
 import org.openhab.core.model.core.ModelRepository;
 import org.openhab.core.model.script.ScriptServiceUtil;
 import org.openhab.core.model.script.engine.Script;
@@ -75,21 +74,21 @@ public class ScriptExecution {
 
     @ActionDoc(text = "create a timer")
     public static Timer createTimer(ZonedDateTime zonedDateTime, Procedures.Procedure0 closure) {
-        return ScriptExecutionActionService.getScriptExecution().createTimer(zonedDateTime, closure::apply);
+        return new Timer(ScriptExecutionActionService.getScriptExecution().createTimer(zonedDateTime, closure::apply));
     }
 
     @ActionDoc(text = "create an identifiable timer ")
     public static Timer createTimer(@Nullable String identifier, ZonedDateTime zonedDateTime, Procedures.Procedure0 closure) {
-        return ScriptExecutionActionService.getScriptExecution().createTimer(identifier, zonedDateTime, closure::apply);
+        return new Timer(ScriptExecutionActionService.getScriptExecution().createTimer(identifier, zonedDateTime, closure::apply));
     }
 
     @ActionDoc(text = "create a timer with argument")
     public static Timer createTimerWithArgument(ZonedDateTime zonedDateTime, Object arg1, Procedures.Procedure1 closure) {
-        return ScriptExecutionActionService.getScriptExecution().createTimerWithArgument(zonedDateTime, arg1, closure::apply);
+        return new Timer(ScriptExecutionActionService.getScriptExecution().createTimerWithArgument(zonedDateTime, arg1, closure::apply));
     }
 
     @ActionDoc(text = "create an identifiable timer with argument")
     public static Timer createTimerWithArgument(@Nullable String identifier, ZonedDateTime zonedDateTime, Object arg1, Procedures.Procedure1 closure) {
-        return ScriptExecutionActionService.getScriptExecution().createTimerWithArgument(identifier, zonedDateTime, arg1, closure::apply);
+        return new Timer(ScriptExecutionActionService.getScriptExecution().createTimerWithArgument(identifier, zonedDateTime, arg1, closure::apply));
     }
 }

bundles/org.openhab.core.model.script/src/org/openhab/core/model/script/actions/Timer.java

@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.core.model.script.actions;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.eclipse.jdt.annotation.Nullable;
+
+import java.time.ZonedDateTime;
+
+/**
+ * The {@link Timer} is a wrapper for the {@link org.openhab.core.automation.module.script.action.Timer}
+ * interface. This is necessary because the implementation methods of an interface can't be called from
+ * the script engine if the implementation is not in a public package or internal to the model bundle
+ *
+ * @author Jan N. Klug - Initial contribution
+ */
+@NonNullByDefault
+public class Timer {
+
+    private final org.openhab.core.automation.module.script.action.Timer timer;
+
+    public Timer(org.openhab.core.automation.module.script.action.Timer timer) {
+        this.timer = timer;
+    }
+
+    public boolean cancel() {
+        return timer.cancel();
+    }
+
+    public @Nullable ZonedDateTime getExecutionTime() {
+        return timer.getExecutionTime();
+    }
+
+    public boolean isActive() {
+        return timer.isActive();
+    }
+
+    public boolean isCancelled() {
+        return timer.isCancelled();
+    }
+
+    public boolean isRunning() {
+        return timer.isRunning();
+    }
+
+    public boolean hasTerminated() {
+        return timer.hasTerminated();
+    }
+
+    public boolean reschedule(ZonedDateTime newTime) {
+        return timer.reschedule(newTime);
+    }
+}