Fix community marketplace discourse parsing (#5376)

Signed-off-by: Ravi Nadahar <nadahar@rediffmail.com>

bundles/org.openhab.core.addon.marketplace/src/main/java/org/openhab/core/addon/marketplace/internal/community/CommunityMarketplaceAddonService.java

@@ -27,7 +27,6 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Objects;
 import java.util.Optional;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -188,8 +187,8 @@ public class CommunityMarketplaceAddonService extends AbstractRemoteAddonService
             }
 
             List<DiscourseUser> users = pages.stream().flatMap(p -> Stream.of(p.users)).toList();
-            pages.stream().flatMap(p -> Stream.of(p.topicList.topics))
-                    .filter(t -> showUnpublished || List.of(t.tags).contains(PUBLISHED_TAG))
+            pages.stream().flatMap(p -> Stream.of(p.topicList.topics)).filter(t -> showUnpublished
+                    || (t.tags != null && Arrays.stream(t.tags).anyMatch(tag -> PUBLISHED_TAG.equals(tag.name))))
                     .map(t -> Optional.ofNullable(convertTopicItemToAddon(t, users)))
                     .forEach(a -> a.ifPresent(addons::add));
         } catch (Exception e) {
@@ -290,7 +289,7 @@ public class CommunityMarketplaceAddonService extends AbstractRemoteAddonService
      */
     private @Nullable Addon convertTopicItemToAddon(DiscourseTopicItem topic, List<DiscourseUser> users) {
         try {
-            List<String> tags = Arrays.asList(Objects.requireNonNullElse(topic.tags, new String[0]));
+            List<String> tags = topic.tags == null ? List.of() : Arrays.stream(topic.tags).map(t -> t.name).toList();
 
             String uid = ADDON_ID_PREFIX + topic.id.toString();
             AddonType addonType = getAddonType(topic.categoryId, tags);
@@ -376,7 +375,7 @@ public class CommunityMarketplaceAddonService extends AbstractRemoteAddonService
      */
     private Addon convertTopicToAddon(DiscourseTopicResponseDTO topic) {
         String uid = ADDON_ID_PREFIX + topic.id.toString();
-        List<String> tags = Arrays.asList(Objects.requireNonNullElse(topic.tags, new String[0]));
+        List<String> tags = topic.tags == null ? List.of() : Arrays.stream(topic.tags).map(t -> t.name).toList();
 
         AddonType addonType = getAddonType(topic.categoryId, tags);
         String type = (addonType != null) ? addonType.getId() : "";

bundles/org.openhab.core.addon.marketplace/src/main/java/org/openhab/core/addon/marketplace/internal/community/model/DiscourseCategoryResponseDTO.java

@@ -53,7 +53,7 @@ public class DiscourseCategoryResponseDTO {
         public Integer id;
         public String title;
         public String slug;
-        public String[] tags;
+        public TagDTO[] tags;
         @SerializedName("posts_count")
         public Integer postsCount;
         @SerializedName("image_url")

bundles/org.openhab.core.addon.marketplace/src/main/java/org/openhab/core/addon/marketplace/internal/community/model/DiscourseTopicResponseDTO.java

@@ -44,7 +44,7 @@ public class DiscourseTopicResponseDTO {
     public Integer likeCount;
     public Integer views;
 
-    public String[] tags;
+    public TagDTO[] tags;
     @SerializedName("category_id")
     public Integer categoryId;
 

bundles/org.openhab.core.addon.marketplace/src/main/java/org/openhab/core/addon/marketplace/internal/community/model/TagDTO.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2010-2026 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.addon.marketplace.internal.community.model;
+
+/**
+ * A DTO class mapped to the Discourse tag object.
+ *
+ * @author Ravi Nadahar - Initial contribution
+ */
+public class TagDTO {
+    public Integer id;
+    public String name;
+    public String slug;
+}