1 files changed, 132 insertions, 0 deletions
diff --git a/actiontext/lib/action_text/content.rb b/actiontext/lib/action_text/content.rb
new file mode 100644
index 0000000000..16bc6fe031
--- /dev/null
+++ b/actiontext/lib/action_text/content.rb
@@ -0,0 +1,132 @@
+# frozen_string_literal: true
+
+require "active_support/core_ext/module/attribute_accessors_per_thread"
+
+module ActionText
+  class Content
+    include Serialization
+
+    thread_cattr_accessor :renderer
+
+    attr_reader :fragment
+
+    delegate :blank?, :empty?, :html_safe, :present?, to: :to_html # Delegating to to_html to avoid including the layout
+
+    class << self
+      def fragment_by_canonicalizing_content(content)
+        fragment = ActionText::Attachment.fragment_by_canonicalizing_attachments(content)
+        fragment = ActionText::AttachmentGallery.fragment_by_canonicalizing_attachment_galleries(fragment)
+        fragment
+      end
+    end
+
+    def initialize(content = nil, options = {})
+      options.with_defaults! canonicalize: true
+
+      if options[:canonicalize]
+        @fragment = self.class.fragment_by_canonicalizing_content(content)
+      else
+        @fragment = ActionText::Fragment.wrap(content)
+      end
+    end
+
+    def links
+      @links ||= fragment.find_all("a[href]").map { |a| a["href"] }.uniq
+    end
+
+    def attachments
+      @attachments ||= attachment_nodes.map do |node|
+        attachment_for_node(node)
+      end
+    end
+
+    def attachment_galleries
+      @attachment_galleries ||= attachment_gallery_nodes.map do |node|
+        attachment_gallery_for_node(node)
+      end
+    end
+
+    def gallery_attachments
+      @gallery_attachments ||= attachment_galleries.flat_map(&:attachments)
+    end
+
+    def attachables
+      @attachables ||= attachment_nodes.map do |node|
+        ActionText::Attachable.from_node(node)
+      end
+    end
+
+    def append_attachables(attachables)
+      attachments = ActionText::Attachment.from_attachables(attachables)
+      self.class.new([self.to_s.presence, *attachments].compact.join("\n"))
+    end
+
+    def render_attachments(**options, &block)
+      content = fragment.replace(ActionText::Attachment::SELECTOR) do |node|
+        block.call(attachment_for_node(node, **options))
+      end
+      self.class.new(content, canonicalize: false)
+    end
+
+    def render_attachment_galleries(&block)
+      content = ActionText::AttachmentGallery.fragment_by_replacing_attachment_gallery_nodes(fragment) do |node|
+        block.call(attachment_gallery_for_node(node))
+      end
+      self.class.new(content, canonicalize: false)
+    end
+
+    def to_plain_text
+      render_attachments(with_full_attributes: false, &:to_plain_text).fragment.to_plain_text
+    end
+
+    def to_trix_html
+      render_attachments(&:to_trix_attachment).to_html
+    end
+
+    def to_html
+      fragment.to_html
+    end
+
+    def to_rendered_html_with_layout
+      renderer.render(partial: "action_text/content/layout", locals: { content: self })
+    end
+
+    def to_s
+      to_rendered_html_with_layout
+    end
+
+    def as_json(*)
+      to_html
+    end
+
+    def inspect
+      "#<#{self.class.name} #{to_s.truncate(25).inspect}>"
+    end
+
+    def ==(other)
+      if other.is_a?(self.class)
+        to_s == other.to_s
+      end
+    end
+
+    private
+      def attachment_nodes
+        @attachment_nodes ||= fragment.find_all(ActionText::Attachment::SELECTOR)
+      end
+
+      def attachment_gallery_nodes
+        @attachment_gallery_nodes ||= ActionText::AttachmentGallery.find_attachment_gallery_nodes(fragment)
+      end
+
+      def attachment_for_node(node, with_full_attributes: true)
+        attachment = ActionText::Attachment.from_node(node)
+        with_full_attributes ? attachment.with_full_attributes : attachment
+      end
+
+      def attachment_gallery_for_node(node)
+        ActionText::AttachmentGallery.from_node(node)
+      end
+  end
+end
+
+ActiveSupport.run_load_hooks :action_text_content, ActionText::Content