Added an optional close message

You can assign a value to closeMessage to make the bot DM people when their thread gets closed.

README.md

@@ -66,6 +66,7 @@ These go in `config.json`. See also `config.example.json`.
 |prefix|"!"|Prefix for bot commands|
 |status|"Message me for help"|The bot's "Playing" text|
 |responseMessage|"Thank you for your message! Our mod team will reply to you here as soon as possible."|The bot's response to DMs that start a new thread|
+|closeMessage|None|The bot's message to the user when the thread is closed|
 |alwaysReply|false|If set to true, all messages in modmail threads will be relayed back to the user, even ones without `!r`|
 |alwaysReplyAnon|false|If `alwaysReply` is set to true, this option controls whether the auto-reply is anonymous|
 |useNicknames|false|If set to true, mod replies will use their nickname (on the inbox server) instead of their username|

src/config.js

@@ -45,6 +45,7 @@ const defaultConfig = {
 
   "status": "Message me for help!",
   "responseMessage": "Thank you for your message! Our mod team will reply to you here as soon as possible.",
+  "closeMessage": null,
 
   "newThreadCategoryId": null,
   "mentionRole": "here",

src/modules/close.js

@@ -14,6 +14,7 @@ module.exports = bot => {
   async function applyScheduledCloses() {
     const threadsToBeClosed = await threads.getThreadsThatShouldBeClosed();
     for (const thread of threadsToBeClosed) {
+      if(config.closeMessage) await thread.postToUser(config.closeMessage);
       await thread.close();
 
       const logUrl = await thread.getLogUrl();
@@ -67,6 +68,7 @@ module.exports = bot => {
     }
 
     // Regular close
+    if(config.closeMessage) await thread.postToUser(config.closeMessage);
     await thread.close();
 
     const logUrl = await thread.getLogUrl();
@@ -84,6 +86,7 @@ module.exports = bot => {
     if (! thread) return;
 
     console.log(`[INFO] Auto-closing thread with ${thread.user_name} because the channel was deleted`);
+    if(config.closeMessage) await thread.postToUser(config.closeMessage);
     await thread.close(true);
 
     const logUrl = await thread.getLogUrl();