Feature: Support attachment option type (#197)

* feat: add new/missing Attachment attributes

* feat: support attachment option type in interaction

lib/discordrb/data/attachment.rb

@@ -27,6 +27,16 @@ class Attachment
     # @return [Integer, nil] the height of an image file, in pixels, or `nil` if the file is not an image.
     attr_reader :height
 
+    # @return [String, nil] the attachment's description.
+    attr_reader :description
+
+    # @return [String, nil] the attachment's media type.
+    attr_reader :content_type
+
+    # @return [true, false] whether this attachment is ephemeral.
+    attr_reader :ephemeral
+    alias_method :ephemeral?, :ephemeral
+
     # @!visibility private
     def initialize(data, message, bot)
       @bot = bot
@@ -41,6 +51,11 @@ def initialize(data, message, bot)
 
       @width = data['width']
       @height = data['height']
+
+      @description = data['description']
+      @content_type = data['content_type']
+
+      @ephemeral = data['ephemeral']
     end
 
     # @return [true, false] whether this file is an image file.

lib/discordrb/data/interaction.rb

@@ -400,7 +400,8 @@ class OptionBuilder
         channel: 7,
         role: 8,
         mentionable: 9,
-        number: 10
+        number: 10,
+        attachment: 11
       }.freeze
 
       # Channel types that can be provided to #channel
@@ -531,6 +532,14 @@ def number(name, description, required: nil, min_value: nil, max_value: nil, cho
                required: required, min_value: min_value, max_value: max_value, choices: choices)
       end
 
+      # @param name [String, Symbol] The name of the argument.
+      # @param description [String] A description of the argument.
+      # @param required [true, false] Whether this option must be provided.
+      # @return (see #option)
+      def attachment(name, description, required: nil)
+        option(TYPES[:attachment], name, description, required: required)
+      end
+
       # @!visibility private
       # @param type [Integer] The argument type.
       # @param name [String, Symbol] The name of the argument.

lib/discordrb/events/interactions.rb

@@ -130,7 +130,7 @@ def matches?(event)
   # Event for ApplicationCommand interactions.
   class ApplicationCommandEvent < InteractionCreateEvent
     # Struct to allow accessing data via [] or methods.
-    Resolved = Struct.new('Resolved', :channels, :members, :messages, :roles, :users) # rubocop:disable Lint/StructNewOverride
+    Resolved = Struct.new('Resolved', :channels, :members, :messages, :roles, :users, :attachments) # rubocop:disable Lint/StructNewOverride
 
     # @return [String] The name of the command.
     attr_reader :command_name
@@ -162,7 +162,7 @@ def initialize(data, bot)
       @command_name = command_data['name'].to_sym
 
       @target_id = command_data['target_id']&.to_i
-      @resolved = Resolved.new({}, {}, {}, {}, {})
+      @resolved = Resolved.new({}, {}, {}, {}, {}, {})
       process_resolved(command_data['resolved']) if command_data['resolved']
 
       options = command_data['options'] || []
@@ -219,6 +219,10 @@ def process_resolved(resolved_data)
       resolved_data['messages']&.each do |id, data|
         @resolved[:messages][id.to_i] = Discordrb::Message.new(data, @bot)
       end
+
+      resolved_data['attachments']&.each do |id, data|
+        @resolved[:attachments][id.to_i] = Discordrb::Attachment.new(data, nil, @bot)
+      end
     end
 
     def transform_options_hash(hash)