Add allowUserClose option. Fixes #69

src/config.js

@@ -52,6 +52,7 @@ 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,
+  "allowUserClose": false,
 
   "newThreadCategoryId": null,
   "mentionRole": "here",

src/data/Thread.js

@@ -204,7 +204,7 @@ class Thread {
     } catch (e) {
       // Channel not found
       if (e.code === 10003) {
-        console.log(`[INFO] Auto-closing thread with ${this.user_name} because the channel no longer exists`);
+        console.log(`[INFO] Failed to send message to thread channel for ${this.user_name} because the channel no longer exists. Auto-closing the thread.`);
         this.close(true);
       } else {
         throw e;
@@ -319,7 +319,7 @@ class Thread {
   async close(silent = false) {
     if (! silent) {
       console.log(`Closing thread ${this.id}`);
-      await this.postToThreadChannel('Closing thread...');
+      await this.postSystemMessage('Closing thread...');
     }
 
     // Update DB status

src/main.js

@@ -2,7 +2,7 @@ const Eris = require('eris');
 
 const config = require('./config');
 const bot = require('./bot');
-const Queue = require('./queue');
+const {messageQueue} = require('./queue');
 const utils = require('./utils');
 const blocked = require('./data/blocked');
 const threads = require('./data/threads');
@@ -25,8 +25,6 @@ const alert = require('./modules/alert');
 const attachments = require("./data/attachments");
 const {ACCIDENTAL_THREAD_MESSAGES} = require('./data/constants');
 
-const messageQueue = new Queue();
-
 // Once the bot has connected, set the status/"playing" message
 bot.on('ready', () => {
   bot.editStatus(null, {name: config.status});

src/modules/close.js

@@ -2,12 +2,12 @@ const humanizeDuration = require('humanize-duration');
 const moment = require('moment');
 const Eris = require('eris');
 const config = require('../config');
-const threadUtils = require('../threadUtils');
-const utils = require("../utils");
-const threads = require("../data/threads");
+const utils = require('../utils');
+const threads = require('../data/threads');
+const blocked = require('../data/blocked');
+const {messageQueue} = require('../queue');
 
 module.exports = bot => {
-  const addInboxServerCommand = (...args) => threadUtils.addInboxServerCommand(bot, ...args);
   const humanizeDelay = (delay, opts = {}) => humanizeDuration(delay, Object.assign({conjunction: ' and '}, opts));
 
   // Check for threads that are scheduled to be closed and close them
@@ -38,7 +38,31 @@ module.exports = bot => {
   scheduledCloseLoop();
 
   // Close a thread. Closing a thread saves a log of the channel's contents and then deletes the channel.
-  addInboxServerCommand('close', async (msg, args, thread) => {
+  bot.registerCommand('close', async (msg, args) => {
+    let thread, closedBy;
+
+    if (msg.channel instanceof Eris.PrivateChannel) {
+      // User is closing the thread by themselves (if enabled)
+      if (! config.allowUserClose) return;
+      if (await blocked.isBlocked(msg.author.id)) return;
+
+      thread = await threads.findOpenThreadByUserId(msg.author.id);
+      if (! thread) return;
+
+      // We need to add this operation to the message queue so we don't get a race condition
+      // between showing the close command in the thread and closing the thread
+      await messageQueue.add(async () => {
+        thread.postSystemMessage('Thread closed by user, closing...');
+        await thread.close(true);
+      });
+
+      closedBy = 'the user';
+    } else {
+      // A staff member is closing the thread
+      if (! utils.messageIsOnInboxServer(msg)) return;
+      if (! utils.isStaff(msg.member)) return;
+
+      thread = await threads.findOpenThreadByChannelId(msg.channel.id);
       if (! thread) return;
 
       // Timed close
@@ -68,12 +92,17 @@ module.exports = bot => {
       }
 
       // Regular close
-    if(config.closeMessage) await thread.postToUser(config.closeMessage).catch(() => {});
       await thread.close();
+      closedBy = msg.author.username;
+    }
+
+    if (config.closeMessage) {
+      await thread.postToUser(config.closeMessage).catch(() => {});
+    }
 
     const logUrl = await thread.getLogUrl();
     utils.postLog(utils.trimAll(`
-      Modmail thread with ${thread.user_name} (${thread.user_id}) was closed by ${msg.author.username}
+      Modmail thread with ${thread.user_name} (${thread.user_id}) was closed by ${closedBy}
       Logs: ${logUrl}
     `));
   });
@@ -82,6 +111,7 @@ module.exports = bot => {
   bot.on('channelDelete', async (channel) => {
     if (! (channel instanceof Eris.TextChannel)) return;
     if (channel.guild.id !== utils.getInboxGuild().id) return;
+
     const thread = await threads.findOpenThreadByChannelId(channel.id);
     if (! thread) return;
 

src/queue.js

@@ -5,8 +5,16 @@ class Queue {
   }
 
   add(fn) {
-    this.queue.push(fn);
+    const promise = new Promise(resolve => {
+      this.queue.push(async () => {
+        await Promise.resolve(fn());
+        resolve();
+      });
+
       if (! this.running) this.next();
+    });
+
+    return promise;
   }
 
   next() {
@@ -20,10 +28,13 @@ class Queue {
     const fn = this.queue.shift();
     new Promise(resolve => {
       // Either fn() completes or the timeout of 10sec is reached
-      Promise.resolve(fn()).then(resolve);
+      fn().then(resolve);
       setTimeout(resolve, 10000);
     }).then(() => this.next());
   }
 }
 
-module.exports = Queue;
+module.exports = {
+  Queue,
+  messageQueue: new Queue()
+};