document conditions

lib/submissions.rb

@@ -124,4 +124,42 @@ module Submissions
 
     fixed_email
   end
+
+  def filtered_conditions_schema(submission, values: nil, include_submitter_uuid: nil)
+    fields_uuid_index = nil
+
+    (submission.template_schema || submission.template.schema).filter_map do |item|
+      if item['conditions'].present?
+        fields_uuid_index ||=
+          (submission.template_fields || submission.template.fields).index_by { |f| f['uuid'] }
+
+        values ||= submission.submitters.reduce({}) { |acc, sub| acc.merge(sub.values) }
+
+        next unless check_document_conditions(item, values, fields_uuid_index, include_submitter_uuid:)
+      end
+
+      item
+    end
+  end
+
+  def check_document_conditions(item, values, fields_index, include_submitter_uuid: nil)
+    return true if item['conditions'].blank?
+
+    item['conditions'].all? do |condition|
+      result =
+        if fields_index[condition['field_uuid']]['submitter_uuid'] == include_submitter_uuid
+          true
+        else
+          Submitters::SubmitValues.check_field_condition(condition, values, fields_index)
+        end
+
+      item['conditions'].each_with_object([]) do |c, acc|
+        if c['operation'] == 'or'
+          acc.push(acc.pop || result)
+        else
+          acc.push(result)
+        end
+      end.exclude?(false)
+    end
+  end
 end