From fde0118d38cd29f334212009822bfa9d93017466 Mon Sep 17 00:00:00 2001
From: emerson <git@emersonveenstra.net>
Date: Tue, 7 Dec 2021 12:15:03 -0500
Subject: [PATCH] send topic changes to IRC, fixes #4

---
 README.md      |  2 +-
 src/Channel.ts | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 333727f..fdd7285 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ That said, it is usable for basic chatting.
 | Channel kicks | ✅ | ❌ ||
 | Channel bans | 🟨 | ❌ | Bans show up on IRC as kicks |
 | Channel invites | ✅ | ❌ ||
-| Channel topics | ❌ | ❌ ||
+| Channel topics | ✅ | ❌ ||
 | Channel powers | ❌ | ❌ ||
 | Encrypted rooms | ❌ | ❌ ||
 | Message replies <small>(IRCv3)</small> | ❌ | ❌ ||
diff --git a/src/Channel.ts b/src/Channel.ts
index 6be3fe0..b2eeeaf 100644
--- a/src/Channel.ts
+++ b/src/Channel.ts
@@ -266,8 +266,22 @@ export class Channel {
     }
 
     handleMatrixTopic(event: any) {
-        this.topic.set("text", event["content"]["topic"]);
-        this.topic.set("timestamp", event["origin_server_ts"].toString())
+        const topicText = event["content"]?.["topic"];
+        if (!topicText)
+            return;
+        const topicSetter = this.server.getOrCreateMatrixUser(event["sender"]);
+        const topicTS: string = event["origin_server_ts"].toString();
+        this.topic.set("text", topicText);
+        this.topic.set("timestamp", topicTS.substring(0,10))
+        this.topic.set('setter', topicSetter.nick);
+
+        const messageTags = new Map();
+        messageTags.set('msgid', event["event_id"]);
+        messageTags.set('account', topicSetter.accountName);
+        messageTags.set('time', new Date(event["origin_server_ts"]).toISOString())
+        this.ircUsers.forEach((user) => {
+            user.sendToAll(topicSetter.getMask(), 'TOPIC', [this.name, topicText], messageTags);
+        });
     }
 
     handleMatrixJoinRule(event: any) {