1 files changed, 24 insertions, 0 deletions
diff --git a/lib/banzai/filter/jira_import/adf_to_commonmark_filter.rb b/lib/banzai/filter/jira_import/adf_to_commonmark_filter.rb
new file mode 100644
index 00000000000..3db2244d641
--- /dev/null
+++ b/lib/banzai/filter/jira_import/adf_to_commonmark_filter.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+module Banzai
+  module Filter
+    module JiraImport
+      # Uses Kramdown to convert from the Atlassian Document Format (json)
+      # into CommonMark
+      # @see https://developer.atlassian.com/cloud/jira/platform/apis/document/structure/
+      class AdfToCommonmarkFilter < HTML::Pipeline::TextFilter
+        def initialize(text, context = nil, result = nil)
+          super(text, context, result)
+        end
+
+        def call
+          Kramdown::Document.new(@text, input: 'AtlassianDocumentFormat', html_tables: true).to_commonmark
+        rescue ::Kramdown::Error => e
+          # If we get an error, then just return the original text so at
+          # least the user knows something went wrong
+          "#{e.message}\n\n#{@text}"
+        end
+      end
+    end
+  end
+end