feat: migrate to longer room id

output/main.js

@@ -426,7 +426,7 @@ function hideBadCommunities() {
  * Removes a Community by its ID and returns the number of elements removed.
  */
 function hideCommunity(communityID) {
-	const element = dom.community_row(communityID);
+	const element = dom.community_row(communityID, true);
 	element?.remove();
 	return element ? 1 : 0;
 }

php/generate-listings.php

@@ -87,42 +87,15 @@
 		$servers = CommunityServer::from_details_array($server_data);
 		$rooms_all = CommunityServer::enumerate_rooms($servers);
 
-		$rooms_by_id = [];
-		foreach ($rooms_all as $room) {
-			$rooms_by_id[$room->get_room_identifier()] = $room;
-		}
-
-		$sogs_by_pubkey = [];
-		foreach ($servers as $server) {
-			$sogs_by_pubkey[$server->get_pubkey()] = $server;
-		}
-
 		$listings = [];
 		foreach ($listings_raw as $id => $listing_props) {
-			$rooms = [];
-			// TODO: Blocklist option
-			if (isset($listing_props['rooms'])) {
-				foreach ($listing_props['rooms'] as $room_id) {
-					if ($room_id == '*') {
-						$rooms = $rooms_all;
-						break;
-					}
-					if (isset($rooms_by_id[$room_id])) {
-						$rooms[] = $rooms_by_id[$room_id];
-					} else {
-						log_warning("Could not find room $room_id from listing $id.");
-					}
-				}
-			}
-			if (isset($listing_props['sogs'])) {
-				foreach ($listing_props['sogs'] as $public_key) {
-					if (isset($sogs_by_pubkey[$public_key])) {
-						/** @var CommunityServer $sogs */
-						$sogs = $sogs_by_pubkey[$public_key];
-						array_push($rooms, ...$sogs->rooms);
-					} else {
-						log_warning("Could not find sogs $public_key from listing $id.");
-					}
+			$filter = [...$listing_props['rooms'], ...$listing_props['sogs']];
+			$matchees = [];
+			$rooms = CommunityRoom::select_rooms($rooms_all, $filter, $matchees);
+
+			foreach ($filter as $filter_item) {
+				if (!in_array($filter_item, $matchees)) {
+					log_warning("Could not find $filter_item from listing $id.");
 				}
 			}
 

php/servers/servers-rooms.php

@@ -184,14 +184,12 @@
 				return $this->language_flag;
 			}
 
-			$room_identifier = $this->get_room_identifier();
-			$server_pubkey = $this->server->get_pubkey();
-
-			if (isset($languages[$room_identifier])) {
-				return $languages[$room_identifier];
-			} elseif (isset($languages[$server_pubkey])) {
-				return $languages[$server_pubkey];
+			foreach ($languages as $key => $flag) {
+				if ($this->matched_by_identifier($key)) {
+					return $flag;
+				}
 			}
+
 			return "";
 		}
 
@@ -397,12 +395,12 @@
 
 		/**
 		 * Return a globally unique room identifier.
-		 * @return string String in the form `token+pubkey[:4]`.
+		 * @return string String in the form `token+hex[8]`.
 		 */
 		function get_room_identifier(): string {
 			$token = $this->token;
-			$pubkey_4 = substr($this->server->get_pubkey(), 0, 4);
-			return "$token+$pubkey_4";
+			$server_id = $this->server->get_server_id();
+			return "$token+$server_id";
 		}
 
 		/**
@@ -468,16 +466,60 @@
 			return true;
 		}
 
+		/**
+		 * Check whether the given identifier matches the current Community or its parent server.
+		 * @param string $identifier Server pubkey, server ID, server hostname or room ID prefix.
+		 * @return bool True if the string matches the Community, false otherwise.
+		 */
+		public function matched_by_identifier(string $identifier): bool {
+			if ($identifier == "*" ||
+				$identifier == $this->server->get_pubkey() ||
+				$identifier == $this->server->get_hostname() ||
+				$identifier == $this->server->get_server_id()) {
+					return true;
+			}
+
+			// Legacy identifier check
+			return (
+				str_starts_with($this->get_room_identifier(), $identifier) &&
+				str_contains($identifier, "+")
+			);
+		}
+
 		/**
 		 * Check whether the given list matches the current Community or its parent server.
 		 * @param string[] $filter
 		 * Array of unique room identifiers, server pubkeys and/or server hostnames.
+		 * @param string $matchee String matching room. Output parameter.
 		 * @return bool True if the array matches the Community, false otherwise.
 		 */
-		public function matched_by_list(array $filter): bool {
-			return in_array($this->get_room_identifier(), $filter) ||
-				in_array($this->server->get_pubkey(), $filter) ||
-				in_array($this->server->get_hostname(), $filter);
+		public function matched_by_list(array $filter, string &$matchee): bool {
+			foreach ($filter as $filter_item) {
+				if ($this->matched_by_identifier($filter_item)) {
+					$matchee = $filter_item;
+					return true;
+				}
+			}
+
+			return false;
+		}
+
+		/**
+		 * @param CommunityRoom[] $rooms
+		 * @param string[] $filter
+		 * @param string[] $matchees output parameter
+		 * @return CommunityRoom[]
+		 */
+		public static function select_rooms(array $rooms, array|string $filter, array &$matchees): array {
+			$_matchees = [];
+			$rooms = array_values(array_filter($rooms, function(CommunityRoom $room) use ($filter, $_matchees) {
+				$matchee = null;
+				$success = $room->matched_by_list($filter, $matchee);
+				if ($matchee != null) $_matchees[] = $matchee;
+				return $success;
+			}));
+			$matchees = $_matchees;
+			return $rooms;
 		}
 
 		/**

php/utils/utils.php

@@ -132,7 +132,9 @@
 		$room_token = url_get_token($join_url);
 		$pubkey = url_get_pubkey($join_url);
 		$pubkey_4 = substr($pubkey, 0, 4);
-		return "$room_token+$pubkey_4";
+		$base_url = url_get_base($join_url, include_scheme: false);
+		$base_url_hash_4 = substr(md5($base_url), 0, 4);
+		return "$room_token+$pubkey_4$base_url_hash_4";
 	}
 
 	/**