From 7b8229a04743bace3d7c034aa66c652ced9e763e Mon Sep 17 00:00:00 2001
From: Christian Weimann <mail@christian-weimann.de>
Date: Sat, 19 Aug 2023 05:51:11 +0200
Subject: [PATCH] Delete watchRule if no more watchObjects are present

---
 utils/watch.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/utils/watch.js b/utils/watch.js
index ede8a5d..9435dab 100644
--- a/utils/watch.js
+++ b/utils/watch.js
@@ -71,6 +71,12 @@ class Watch {
         }
 
         delete this.#watchObjects[watchUUID];
+
+        // Delete watchRule if no more watchObjects are present
+        if (Object.keys(this.#watchObjects).length == 0) {
+            console.debug(`Remove openHAB watch rule for item ${this.#watchItemName}`);
+            rules.removeRule(this.watchRuleID);
+        }
     }
 
     deleteAll() {
@@ -135,7 +141,9 @@ class Watch {
     #createWatchRule() {
         // Create openHAB rule
         console.log(`Create openHAB watch rule for item ${this.#watchItemName}`);
-        let ruleID = rules.JSRule({
+        this.watchRuleID = String(utils.randomUUID());
+        rules.JSRule({
+            id: this.watchRuleID,
             name: 'Watch rule for ' + this.#watchItemName,
             triggers: [triggers.ItemStateUpdateTrigger(this.#watchItemName)],
             execute: (event) => { this.#processItemEvent(event) },