feat: acceder a la social inbox desde el sitio

app/models/site/social_distributed_press.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'distributed_press/v1/social/client'
+
 class Site
   # Agrega soporte para Social Distributed Press en los sitios
   module SocialDistributedPress
@@ -10,13 +12,20 @@ class Site
 
       before_save :generate_private_key_pem!, unless: :private_key_pem?
 
+      # @return [SocialInbox]
+      def social_inbox
+        @social_inbox ||= SocialInbox.new(site: self)
+      end
+
       private
 
       # Genera la llave privada y la almacena
       #
       # @return [nil]
       def generate_private_key_pem!
-        self.private_key_pem ||= ::DistributedPress::V1::Social::Client.new(public_key_url: nil, key_size: 2048).private_key.export
+        self.private_key_pem ||= DistributedPress::V1::Social::Client.new(
+          public_key_url: nil,
+          key_size: 2048).private_key.export
       end
     end
   end

app/models/social_inbox.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'distributed_press/v1/social/client'
+
+# Gestiona la Social Inbox de un sitio
+class SocialInbox
+  # @return [Site]
+  attr_reader :site
+
+  # @param :site [Site]
+  def initialize(site:)
+    @site = site
+  end
+
+  # @return [String]
+  def actor
+    @actor ||=
+      begin
+        user   = site.config.dig('activity_pub', 'username')
+        user ||= hostname.split('.', 2).first
+
+        "@#{user}@#{hostname}"
+      end
+  end
+
+  # @return [DistributedPress::V1::Social::Client]
+  def client
+    @client ||= DistributedPress::V1::Social::Client.new(
+      url: site.config.dig('activity_pub', 'url'),
+      public_key_url: public_key_url,
+      private_key_pem: site.private_key_pem,
+      logger: Rails.logger,
+      cache_store: :redis
+    )
+  end
+
+  # @return [String]
+  def public_key_url
+    @public_key_url ||= URI("https://#{hostname}").tap do |uri|
+      uri.path = '/about.jsonld'
+      uri.fragment = 'main-key'
+    end.to_s
+  end
+
+  def hostname
+    @hostname ||=
+      begin
+        host   = site.config.dig('activity_pub', 'hostname')
+        host ||= site.hostname
+      end
+  end
+end