From 4f8ce0a953f9a21d644c9fde01ff1f02a9725d34 Mon Sep 17 00:00:00 2001
From: xmppftw <xmppftw@kl.netlib.re>
Date: Sun, 31 Dec 2023 19:41:34 +0100
Subject: [PATCH] Implement Event::RoomSubject for room subject
 changes/retrieve

---
 xmpp/src/event.rs                      | 5 +++++
 xmpp/src/message/receive/group_chat.rs | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/xmpp/src/event.rs b/xmpp/src/event.rs
index 2ba2d5f..2eea5c2 100644
--- a/xmpp/src/event.rs
+++ b/xmpp/src/event.rs
@@ -24,6 +24,11 @@ pub enum Event {
     RoomJoined(BareJid),
     RoomLeft(BareJid),
     RoomMessage(Id, BareJid, RoomNick, Body),
+    /// The subject of a room was received.
+    /// - The BareJid is the room's address.
+    /// - The RoomNick is the nickname of the room member who set the subject.
+    /// - The String is the new subject.
+    RoomSubject(BareJid, Option<RoomNick>, String),
     /// A private message received from a room, containing the message ID, the room's BareJid,
     /// the sender's nickname, and the message body.
     RoomPrivateMessage(Id, BareJid, RoomNick, Body),
diff --git a/xmpp/src/message/receive/group_chat.rs b/xmpp/src/message/receive/group_chat.rs
index 7cf81f8..71611fb 100644
--- a/xmpp/src/message/receive/group_chat.rs
+++ b/xmpp/src/message/receive/group_chat.rs
@@ -15,6 +15,11 @@ pub async fn handle_message_group_chat(
     message: &Message,
 ) {
     let langs: Vec<&str> = agent.lang.iter().map(String::as_str).collect();
+
+    if let Some((_lang, subject)) = message.get_best_subject(langs.clone()) {
+        events.push(Event::RoomSubject(from.to_bare(), from.resource_str().map(String::from), subject.0.clone()));
+    }
+
     if let Some((_lang, body)) = message.get_best_body(langs) {
         let event = match from.clone() {
             Jid::Full(full) => Event::RoomMessage(