Don't send the banned word in the ban reason (#665)

This change makes the ban reason when a user sends a banned word generic, and instead sends the banned word in the management room directly. This prevents the banned word from persisting in the room timeline after redacting the original event.

Signed-off-by: nexy7574 <[email protected]>

src/protections/WordList.ts

@@ -26,13 +26,15 @@ import {
   UserConsequences,
   Value,
   describeProtection,
+  isError,
 } from "matrix-protection-suite";
 import { Draupnir } from "../Draupnir";
 import {
   StringUserID,
   StringRoomID,
   MatrixRoomID,
 } from "@the-draupnir-project/matrix-basic-types";
+import { resultifyBotSDKRequestError } from "matrix-protection-suite-for-matrix-bot-sdk";
 
 const log = new Logger("WordList");
 
@@ -193,12 +195,24 @@ export class WordListProtection
 
       const match = this.badWords.exec(message);
       if (match) {
-        const reason = `bad word: ${match[0]}`;
+        const reason = `Said a bad word. Moderators, consult the management room for more information.`;
         await this.userConsequences.consequenceForUserInRoom(
           roomID,
           event.sender,
           reason
         );
+        const messageResult = await this.draupnir.client
+          .sendMessage(this.draupnir.managementRoomID, {
+            msgtype: "m.notice",
+            body: `Banned ${event.sender} in ${roomID} for saying '${match[0]}'.`,
+          })
+          .then((_) => Ok(undefined), resultifyBotSDKRequestError);
+        if (isError(messageResult)) {
+          log.error(
+            `Failed to send a message to the management room after banning ${event.sender} in ${roomID} for saying '${match[0]}'.`,
+            messageResult.error
+          );
+        }
         await this.eventConsequences.consequenceForEvent(
           roomID,
           event.event_id,