#399

backend/app/services/post_metadata_fetcher.rb

@@ -1,3 +1,5 @@
+require 'time'
+
 class PostMetadataFetcher
   TIMESTAMP_PATTERN =
       Regexp.new(
@@ -26,8 +28,8 @@ class PostMetadataFetcher
     { title: metadata[:title],
       thumbnail_base:
           Preview::KnownSiteExtractor.thumbnail_url(uri) || metadata[:image_url],
-      original_created_from: created_range&.first&.iso8601,
-      original_created_before: created_range&.last&.iso8601,
+      original_created_from: serialise_time(created_range&.first),
+      original_created_before: serialise_time(created_range&.last),
       duration: duration&.to_f&.then { _1.positive? ? (_1 * 1_000).round : nil },
       tags: platform_tags.join(' ') }
   end
@@ -114,9 +116,16 @@ class PostMetadataFetcher
     Rational(value.to_i, 10**value.length)
   end
 
+  def self.serialise_time value
+    return nil if value.nil?
+
+    value.nsec.zero? ? value.iso8601 : value.iso8601(9)
+  end
+
   private_class_method :platform_tags,
                        :original_created_range,
                        :parse_timestamp_range,
                        :parse_offset,
-                       :fractional_seconds
+                       :fractional_seconds,
+                       :serialise_time
 end