Fix tag fetching order

php/servers/servers-rooms.php

@@ -112,7 +112,7 @@
 		// Custom properties
 		/**
 		 * @var string[] $string_tags
-		 * String tags originally applied to room.
+		 * String tags from external sources originally applied to room.
 		 */
 		private array $string_tags = [];
 
@@ -120,9 +120,11 @@
 		 * @var CommunityTag[] $tags
 		 * Tag-based information from multiple sources.
 		 *
+		 * Not valid in fetching phase.
+		 *
 		 * Custom attribute.
 		 */
-		private array $tags = [];
+		private ?array $tags = null;
 
 		/**
 		 * @var string $language_flag;
@@ -157,10 +159,16 @@
 			if ($suppress_processing) return;
 
 			$this->language_flag = $details['language_flag'] ?? $this->get_language_flag();
-			$this->extract_tags_from_description();
-			$this->tags = isset($details['tags'])
-				? CommunityTag::from_details_array($details['tags'])
-				: $this->get_derived_tags();
+			if (!isset($details['tags'])) {
+				// Fetching phase.
+				// String tags are added, object tags are on-demand only.
+				$this->tags = null;
+				$this->extract_tags_from_description();
+			} else {
+				// Post fetching phase.
+				// Fetched & derived object tags are loaded and used.
+				$this->tags = CommunityTag::from_details_array($details['tags']);
+			}
 		}
 
 		/**
@@ -240,6 +248,7 @@
 		public function jsonSerialize(): array {
 			$details = get_object_vars($this);
 			unset($details['server']);
+			$details['tags'] = $this->get_room_tags();
 			return $details;
 		}
 
@@ -418,21 +427,14 @@
 		 * @param string[] $tags
 		 */
 		public function add_tags(array $tags) {
-			$new_string_tags = [];
 			foreach ($tags as $tag) {
 				if (str_contains($this->token, "mathnodes")) {
 					log_debug("new tag: '$tag'");
 				}
 				if (strlen(trim($tag)) == 0) continue;
-				$this->string_tags[] = $tag;
 				if ($this->parse_language_tag($tag)) continue;
-				$new_string_tags[] = $tag;
+				$this->string_tags[] = $tag;
 			}
-			$new_tags = CommunityTag::from_user_tags($new_string_tags);
-			$this->tags = CommunityTag::dedupe_tags([
-				...$this->tags,
-				...$new_tags
-			]);
 		}
 
 		/**
@@ -637,6 +639,15 @@
 			return $this->string_tags;
 		}
 
+		/**
+		 * @return CommunityTag[]
+		 */
+		private function get_user_tags(): array {
+			return CommunityTag::dedupe_tags(
+				CommunityTag::from_user_tags($this->string_tags),
+			);
+		}
+
 		/**
 		 * Return the derived tags associated with this room.
 		 * @return CommunityTag[] Array of tags.
@@ -649,9 +660,7 @@
 			 */
 			$derived_tags = [];
 
-			$USERS_PER_STAFF_WARNING = CommunityRoom::USERS_PER_STAFF_WARNING;
-
-			if (in_array($this->get_room_identifier(), $ROOMS_USED_BY_PROJECT)) {
+			if ($this->matched_by_list($ROOMS_USED_BY_PROJECT)) {
 				$derived_tags[] = ReservedTags::used_by_project();
 			}
 
@@ -696,7 +705,7 @@
 		 * @return CommunityTag[] Array of tags.
 		 */
 		function get_room_tags(): array {
-			return $this->tags;
+			return [...$this->get_derived_tags(), ...$this->get_user_tags()];
 		}
 	}
 

php/servers/sources.php

@@ -106,7 +106,9 @@
 
 				$this->tags[$room_id] = explode(',', $tag_string);
 				if ($nsfw) {
-					$this->tags[$room_id] = array_unique(["nsfw", ...$this->tags[$room_id]]);
+					$this->tags[$room_id] = array_values(array_unique([
+						"nsfw", ...$this->tags[$room_id]
+					]));
 				}
 			}
 

php/servers/tags.php

@@ -249,7 +249,7 @@
 
 		private const HIGHLIGHTED_TAGS = ["new", "we're here", "pinned"];
 
-		private const REDUNDANT_TAGS = ["session"];
+		private const REDUNDANT_TAGS = [];
 
 		public const NSFW_KEYWORDS = ["nsfw", "porn", "erotic", "18+", "sex"];
 		/**