Update how Addons are used

After some more reading, update the logic for handling the addons.

Leverage an "addons module" (Addon), and require that each addon be a
class within that module. Within that class, optionally include a
`self.register` method, which will be called when the bot is
initialized. This method takes one parameter: the bot
instance.Registering the addon adds the bot's instance to an instance of
the addon, and vice versa, allowing the instances to communicate.
Additionally, registering adds the addons commands.

Each registered addon must also include a `matrix_command` method, which
takes the message String from Matrix. The intention here is to include
additional `*_command` methods for different protocols, without having
to change much else. Adding additional protocols will determine how well
that works.

chronicle_bot.rb: Redo addon logic (details above)
addons/utils.rb: Update for new addon logic (details above)
addons/roller.rb: Update for new addon logic (details above)

lib/addons/roller.rb

@@ -1,30 +1,42 @@
 # frozen_string_literal: true
 
 module Chronicle
-  module Matrix
+  module Addon
     # Roll dice and get the results
+    class Roller
+      def self.register(bot)
+        addon_instance = new(bot)
+        addon_command = ['roll']
+
+        [addon_instance, addon_command]
+      end
+
+      def initialize(bot)
+        @bot = bot
+      end
+
+      # Handle a command from the Matrix protocol
       #
       # @param message [hash] The message data from Matrix
-    def handle_roll(client, message)
+      def matrix_command(message)
         msgstr = message.content[:body]
                         .gsub(/!roll\s*/, '')
                         .strip
 
-      room = client.ensure_room(message.room_id)
+        room = @bot.client.ensure_room(message.room_id)
 
-      res = Roller.roll(msgstr)
+        res = roll(msgstr)
 
-      final_msg = res.reduce("") { |x,y| x+y+"\n" }
+        final_msg = res.reduce('') { |x, y| x + y + "\n" }
 
         room.send_notice(final_msg)
       end
 
-    module Roller
       # Solve an arithmatic forumla from a string
       #
       # @param string [String] The string representation of the formula
       # @return Integer of the solution
-      def self.solve(string)
+      def solve(string)
         formatted = string.gsub(/\s+/, '')
         formatted = formatted.gsub(/\[[\d,]*\]/) do |a|
           a.scan(/\d*/).reduce(0) { |x, y| x + y.to_i }
@@ -77,7 +89,7 @@ module Chronicle
       # @param string [String] The processed request
       # @param res [String] The result of the process
       # @return String re-formatted
-      def self.pretty(func, orig, string, res)
+      def pretty(func, orig, string, res)
         orig.gsub!(/[\+\-*\/]/) { |s| " #{s} " }
         string.gsub!(/[\+\-*\/]/) { |s| " #{s} " }
         "#{func.capitalize}: #{orig} (#{string}) ==> #{res}"
@@ -88,7 +100,7 @@ module Chronicle
       # @param string [String] The string representation of the dice roll
       #        example: 2d4+6
       # @return Array of the message and the result
-      def self.roll(string)
+      def roll(string)
         results = []
         string.gsub(/\s+/,'').split(',').each do |roll|
           orig = roll

lib/addons/utils.rb

@@ -1,27 +1,52 @@
 # frozen_string_literal: true
 
 module Chronicle
-  module Matrix
+  module Addon
     # Ping - Pong. Useful for testing
+    class Ping
+      def self.register(bot)
+        addon_instance = new(bot)
+        addon_command = ['ping']
+
+        [addon_instance, addon_command]
+      end
+
+      def initialize(bot)
+        @bot = bot
+      end
+
+      # Handle a command from the Matrix protocol
       #
-    # @param client [Client object] The current Matrix client connection
       # @param message [Message object] The relevant message object
-    def handle_ping(client, message)
+      def matrix_command(message)
-      room = client.ensure_room message.room_id
+        room = @bot.client.ensure_room(message.room_id)
 
         room.send_notice('Pong!')
       end
+    end
 
     # 8-Ball: Give a random, vague response to a question
+    class Eightball
+      def self.register(bot)
+        addon_instance = new(bot)
+        addon_command = ['8ball']
+
+        [addon_instance, addon_command]
+      end
+
+      def initialize(bot)
+        @bot = bot
+      end
+
+      # Handle a command from the Matrix protocol
       #
-    # @param client [Client object] The current Matrix client connection
       # @param message [Message object] The relevant message object
-    def handle_8ball(client, message)
+      def matrix_command(message)
         msgstr = message.content[:body]
                         .gsub(/!8ball\s*/, '')
                         .strip
 
-      room = client.ensure_room(message.room_id)
+        room = @bot.client.ensure_room(message.room_id)
 
         fates = [
           'Resoundingly, yes.',
@@ -53,4 +78,5 @@ module Chronicle
         room.send_notice(res)
       end
     end
+  end
 end

lib/chronicle_bot.rb

@@ -4,13 +4,13 @@ require 'faraday'
 require 'json'
 require 'matrix_sdk'
 
+# Require any addons
+Dir[File.join(__dir__, 'addons', '*.rb')].each do |file|
+  require file
+end
+
 # Chronicle Bot
 module Chronicle
-  # Require any addons
-  Dir[File.join(__dir__, 'addons', '*.rb')].each do |file|
-    require file
-  end
-
   # A filter to simplify syncs
   BOT_FILTER = {
     presence: { types: [] },
@@ -30,23 +30,6 @@ module Chronicle
 
   # Chronicle Bot for Matrix
   module Matrix
-    @@default_allowed_commands = %w[ping]
-    @@room_allowed_commands = {}
-
-    # Update allowed commands
-    def add_allowed_commands(cmds, msgid='')
-      if msgid
-        @@room_allowed_commands[msgid].concat(cmds)
-      else
-        @@room_allowed_commands.each { |_,v| v.concat(cmds) }
-      end
-    end
-
-    # Establish or return allowed commands for a room
-    def allowed_commands(msgid)
-      @@room_allowed_commands[msgid] ||= @@default_allowed_commands
-    end
-
     # Begin the beast
     def self.start(args)
       unless args.length >= 2
@@ -65,11 +48,68 @@ module Chronicle
 
     # The bot
     class ChronicleBot
-      include Matrix
+      attr_reader :all_commands, :cmd_prefix
 
       def initialize(hs_url, access_token)
         @hs_url = hs_url
         @token = access_token
+
+        @cmd_prefix = '!'
+        @all_commands = {}
+        @allowed_commands = {}
+
+        register_commands
+      end
+
+      # All available commands
+      def available_commands(addon, commands)
+        commands.each do |command|
+          @all_commands[command] = addon
+        end
+      end
+
+      def client
+        @client ||= MatrixSdk::Client.new(
+          @hs_url,
+          access_token: @token,
+          client_cache: :all
+        )
+      end
+
+      def deep_copy(hash)
+        Marshal.load(Marshal.dump(hash))
+      end
+
+      def disable_commands(*commands)
+        commands.each do |command|
+          @all_commands.delete(command)
+        end
+      end
+
+      def on_message(message)
+        return unless message.content[:msgtype] == 'm.text'
+
+        msgstr = message.content[:body]
+        roomid = message.room_id
+        cmds = @all_commands.keys.join('|')
+
+        return unless msgstr =~ /^#{@cmd_prefix}#{cmds}\s*/
+
+        msgstr.match(/^#{@cmd_prefix}(#{cmds})\s*/) do |m|
+          @all_commands[m.to_s[1..-1].strip].matrix_command(message)
+        end
+      end
+
+      def register_commands
+        Chronicle::Addon.constants.each do |addon|
+          cmd = Object.const_get("Chronicle::Addon::#{addon.to_s}")
+
+          if cmd.methods.include?(:register)
+            instance, commands = cmd.send(:register, self)
+
+            available_commands(instance, commands)
+          end
+        end
       end
 
       # Run Chronicle
@@ -95,36 +135,6 @@ module Chronicle
           end
         end
       end
-
-      def on_message(message)
-        return unless message.content[:msgtype] == 'm.text'
-
-        msgstr = message.content[:body]
-        msgid = message.room_id
-        cmds = allowed_commands(msgid).join('|')
-
-        return unless msgstr =~ /^!#{cmds}\s*/
-
-        msgstr.match(/^!(#{cmds})\s*/) do |m| 
-          send(
-            "handle_#{m.to_s[1..-1].strip}",
-            client,
-            message
-          )
-        end
-      end
-
-      def client
-        @client ||= MatrixSdk::Client.new(
-          @hs_url,
-          access_token: @token,
-          client_cache: :none
-        )
-      end
-
-      def deep_copy(hash)
-        Marshal.load(Marshal.dump(hash))
-      end
     end
   end
 end