From dab85a8777229b92d3d9d950407fce5e41c13b52 Mon Sep 17 00:00:00 2001
From: haegelsperger <michael.haeglsperger@yworks.com>
Date: Thu, 20 Jul 2023 17:32:39 +0200
Subject: [PATCH] fixes #46 Sanitize mattermost username to match openai regex.

---
 package-lock.json |  4 ++--
 package.json      |  2 +-
 src/botservice.ts | 11 ++++++++++-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 0bc7dd7..ba45e26 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "chatgpt-mattermost-bot",
-  "version": "1.3.4",
+  "version": "2.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "chatgpt-mattermost-bot",
-      "version": "1.3.4",
+      "version": "2.0.1",
       "dependencies": {
         "@mattermost/client": "^7.10.0",
         "@mattermost/types": "^7.10.0",
diff --git a/package.json b/package.json
index b675f9e..7696e38 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "chatgpt-mattermost-bot",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "private": true,
   "scripts": {
     "start": "ts-node ./src/botservice.ts",
diff --git a/src/botservice.ts b/src/botservice.ts
index 5822170..0e0e744 100644
--- a/src/botservice.ts
+++ b/src/botservice.ts
@@ -18,7 +18,7 @@ if(!global.FormData) {
 }
 
 const name = process.env['MATTERMOST_BOTNAME'] || '@chatgpt'
-const contextMsgCount = Number(process.env['BOT_CONTEXT_MSG'] ?? 7)
+const contextMsgCount = Number(process.env['BOT_CONTEXT_MSG'] ?? 100)
 
 /* List of all registered plugins */
 const plugins: PluginBase<any>[] = [
@@ -185,6 +185,15 @@ async function userIdToName(userId: string): Promise<string> {
     } else {
         // username not in cache our outdated
         username = (await mmClient.getUser(userId)).username
+
+        if(!/^[a-zA-Z0-9_-]{1,64}$/.test(username)) {
+            username = username.replace(/[.@!?]/g,'_').slice(0, 64)
+        }
+
+        if(!/^[a-zA-Z0-9_-]{1,64}$/.test(username)) {
+            username = [...username.matchAll(/[a-zA-Z0-9_-]/g)].join('').slice(0, 64)
+        }
+
         usernameCache[userId] = {
             username: username,
             expireTime: Date.now() + 1000 * 60 * 5