From bd48f36ade55a80ef050dc89f0c12d92fea8dd5b Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Mon, 31 Jan 2022 18:24:34 +0100
Subject: [PATCH] lib/irc: add missing Isupport.chanModes

It was called by forEachChannelModeUpdate, but wasn't implemented.
---
 lib/irc.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/lib/irc.js b/lib/irc.js
index 716f7d6..0dbde6b 100644
--- a/lib/irc.js
+++ b/lib/irc.js
@@ -73,7 +73,6 @@ export const ERR_SASLALREADY = "907";
 
 export const STD_MEMBERSHIPS = "~&@%+";
 export const STD_CHANTYPES = "#&+!";
-export const STD_CHANMODES = "beI,k,l,imnst";
 
 const tagEscapeMap = {
 	";": "\\:",
@@ -464,6 +463,19 @@ export class Isupport {
 	bouncerNetID() {
 		return this.raw.get("BOUNCER_NETID");
 	}
+
+	chanModes() {
+		const stdChanModes = ["beI", "k", "l", "imnst"];
+		if (!this.raw.has("CHANMODES")) {
+			return stdChanModes;
+		}
+		let chanModes = this.raw.get("CHANMODES").split(",");
+		if (chanModes.length != 4) {
+			console.error("Invalid CHANMODES: ", this.raw.get("CHANMODES"));
+			return stdChanModes;
+		}
+		return chanModes;
+	}
 }
 
 export const CaseMapping = {
@@ -672,11 +684,10 @@ export function getMessageLabel(msg) {
 }
 
 export function forEachChannelModeUpdate(msg, isupport, callback) {
-	let chanmodes = isupport.chanModes();
+	let [a, b, c, d] = isupport.chanModes();
 	let prefix = isupport.prefix();
 
 	let typeByMode = new Map();
-	let [a, b, c, d] = chanmodes.split(",");
 	Array.from(a).forEach((mode) => typeByMode.set(mode, "A"));
 	Array.from(b).forEach((mode) => typeByMode.set(mode, "B"));
 	Array.from(c).forEach((mode) => typeByMode.set(mode, "C"));