FEATURE: added event listening stub area and example

config/locales/server.en.yml

@@ -1,7 +1,9 @@
 en:
   site_settings:
-      discord_bot_enabled: "Enable the Discourse Discord bot plugin"
-      discord_bot_token: "Enter your bot TOKEN from Discord here"
-      discord_bot_admin_channel_id: "The id of your admin text channel on Discord"
-      discord_bot_admin_role_id: "The id of your admin role on Discord for which commands are permitted"
-      discord_bot_rate_limit_delay: "The delay in seconds between sending commands to Discord so we don't annihilate rate limits"
+    discord_bot_enabled: "Enable the Discourse Discord bot plugin"
+    discord_bot_token: "Enter your bot TOKEN from Discord here"
+    discord_bot_admin_channel_id: "The id of your admin text channel on Discord"
+    discord_bot_admin_role_id: "The id of your admin role on Discord for which commands are permitted"
+    discord_bot_rate_limit_delay: "The delay in seconds between sending commands to Discord so we don't annihilate rate limits"
+    discord_bot_post_announcement_categories: "Announce new Posts in here within the admin channel"
+    discord_bot_topic_announcement_categories: "Announce new Topics in here within the admin channel"

config/settings.yml

@@ -11,6 +11,16 @@ plugins:
   discord_bot_admin_role_id:
     default: ''
     client: false
+  discord_bot_post_announcement_categories:
+    client: false
+    default: ''
+    type: category_list
+    list_type: "compact"
+  discord_bot_topic_announcement_categories:
+    client: false
+    default: ''
+    type: category_list
+    list_type: "compact"
   discord_bot_rate_limit_delay:
     default: 2
     client: false

lib/bot.rb

@@ -1,5 +1,5 @@
 # Discord bot class
-class DiscordBot
+class ::DiscordBot::Bot
 
   @@DiscordBot = nil
 
@@ -22,7 +22,8 @@ def self.run_bot
     bot = self.init
 
     unless bot.nil?
-      BotCommands.manage_commands(bot)
+      ::DiscordBot::DiscourseEventsHandlers.hook_events
+      ::DiscordBot::BotCommands.manage_discord_commands(bot)
     end
   end
 end

lib/bot_commands.rb

@@ -1,5 +1,5 @@
-module BotCommands
-  def self.manage_commands(bot)
+module ::DiscordBot::BotCommands
+  def self.manage_discord_commands(bot)
     bot.bucket :admin_tasks, limit: 3, time_span: 60, delay: 10
 
     # '!disckick' - a command to kick members beneath a certain trust level on Discourse

lib/discourse_events_handlers.rb

@@ -0,0 +1,21 @@
+module ::DiscordBot::DiscourseEventsHandlers
+  def self.hook_events
+    DiscourseEvent.on(:post_created) do |post|
+      if post.id > 0 && !::DiscordBot::Bot.discord_bot.nil? then
+        post_listening_categories = SiteSetting.discord_bot_post_announcement_categories.split('|')
+        topic_listening_categories = SiteSetting.discord_bot_topic_announcement_categories.split('|')
+        posted_category = post.topic.category.id
+        posted_category_name = Category.find_by(id: posted_category).name
+        if post_listening_categories.include?(posted_category.to_s) then
+          message = "There's a new Post in the '#{posted_category_name}' Category on Discourse: #{Discourse.base_url + post.url}"
+          ::DiscordBot::Bot.discord_bot.send_message(SiteSetting.discord_bot_admin_channel_id, message)
+        else
+          if topic_listening_categories.include?(posted_category.to_s) && post.post_number = 1 then
+            message = "There's a new Topic in the '#{posted_category_name}' Category on Discourse: #{Discourse.base_url + post.url}"
+            ::DiscordBot::Bot.discord_bot.send_message(SiteSetting.discord_bot_admin_channel_id, message)
+          end
+        end
+      end
+    end
+  end
+end

lib/engine.rb

@@ -0,0 +1,6 @@
+module ::DiscordBot
+  class Engine < ::Rails::Engine
+    engine_name "discord_bot"
+    isolate_namespace DiscordBot
+  end
+end

plugin.rb

@@ -24,20 +24,20 @@
 
 enabled_site_setting :discord_bot_enabled
 
-register_asset 'stylesheets/common/discord.scss'
-
 after_initialize do
 
   %w[
+    ../lib/engine.rb
     ../lib/bot.rb
     ../lib/bot_commands.rb
+    ../lib/discourse_events_handlers.rb
   ].each do |path|
     load File.expand_path(path, __FILE__)
   end
 
   bot_thread = Thread.new do
     begin
-      DiscordBot.run_bot
+      ::DiscordBot::Bot.run_bot
     rescue Exception => ex
       Rails.logger.error("Discord Bot: There was a problem: #{ex}")
     end