1 files changed, 33 insertions, 0 deletions
diff --git a/lib/banzai/pipeline/incident_management/timeline_event_pipeline.rb b/lib/banzai/pipeline/incident_management/timeline_event_pipeline.rb
new file mode 100644
index 00000000000..01ee3f5d9e8
--- /dev/null
+++ b/lib/banzai/pipeline/incident_management/timeline_event_pipeline.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Banzai
+  module Pipeline
+    module IncidentManagement
+      class TimelineEventPipeline < PlainMarkdownPipeline
+        ALLOWLIST = Banzai::Filter::SanitizationFilter::LIMITED.deep_dup.merge(
+          elements: %w(p b i strong em pre code a img)
+        ).freeze
+
+        def self.filters
+          @filters ||= FilterArray[
+            *super,
+            *Banzai::Pipeline::GfmPipeline.reference_filters,
+            Filter::EmojiFilter,
+            Filter::SanitizationFilter,
+            Filter::ExternalLinkFilter,
+            Filter::ImageLinkFilter
+          ]
+        end
+
+        def self.transform_context(context)
+          Filter::AssetProxyFilter.transform_context(context).merge(
+            only_path: true,
+            no_sourcepos: true,
+            allowlist: ALLOWLIST,
+            link_replaces_image: true
+          )
+        end
+      end
+    end
+  end
+end