Add ActionMailbox install generator

Forward ActionMailbox install to install generator and hide the ActionMailbox install generator from generator list

Updated the Action Mailbox install task description

actionmailbox/lib/generators/action_mailbox/install/install_generator.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "rails/generators/mailbox/mailbox_generator"
+
+module ActionMailbox
+  module Generators
+    class InstallGenerator < ::Rails::Generators::Base
+      source_root Rails::Generators::MailboxGenerator.source_root
+
+      def create_action_mailbox_files
+        say "Copying application_mailbox.rb to app/mailboxes", :green
+        template "application_mailbox.rb", "app/mailboxes/application_mailbox.rb"
+      end
+
+      def add_action_mailbox_production_environment_config
+        environment <<~end_of_config, env: "production"
+          # Prepare the ingress controller used to receive mail
+          # config.action_mailbox.ingress = :relay
+
+        end_of_config
+      end
+
+      def create_migrations
+        rails_command "railties:install:migrations FROM=active_storage,action_mailbox"
+      end
+    end
+  end
+end

actionmailbox/lib/rails/generators/installer.rb

@@ -1,10 +0,0 @@
-# frozen_string_literal: true
-
-say "Copying application_mailbox.rb to app/mailboxes"
-copy_file "#{__dir__}/mailbox/templates/application_mailbox.rb", "app/mailboxes/application_mailbox.rb"
-
-environment <<~end_of_config, env: "production"
-  # Prepare the ingress controller used to receive mail
-  # config.action_mailbox.ingress = :relay
-
-end_of_config

actionmailbox/lib/tasks/install.rake

@@ -1,20 +1,6 @@
 # frozen_string_literal: true
 
-namespace :action_mailbox do
-  # Prevent migration installation task from showing up twice.
-  Rake::Task["install:migrations"].clear_comments
-
-  desc "Copy over the migration"
-  task install: %w[ environment run_installer copy_migrations ]
-
-  task :run_installer do
-    installer_template = File.expand_path("../rails/generators/installer.rb", __dir__)
-    system "#{RbConfig.ruby} ./bin/rails app:template LOCATION=#{installer_template}"
-  end
-
-  task :copy_migrations do
-    Rake::Task["active_storage:install:migrations"].invoke
-    Rake::Task["railties:install:migrations"].reenable # Otherwise you can't run 2 migration copy tasks in one invocation
-    Rake::Task["action_mailbox:install:migrations"].invoke
-  end
+desc "Installs Action Mailbox and its dependencies"
+task "action_mailbox:install" do
+  Rails::Command.invoke :generate, ["action_mailbox:install"]
 end

railties/lib/rails/generators.rb

@@ -161,7 +161,8 @@ module Rails
             "#{css}:assets",
             "css:assets",
             "css:scaffold",
-            "action_text:install"
+            "action_text:install",
+            "action_mailbox:install"
           ]
         end
       end