#399

backend/app/services/post_metadata_fetcher.rb

@@ -29,14 +29,17 @@ class PostMetadataFetcher
 
     raw = value.to_s.strip
     from = Time.zone.parse(raw)
-    before =
-        case raw
-        when /\A\d{4}\z/ then from + 1.year
-        when /\A\d{4}-\d{2}\z/ then from + 1.month
-        when /\A\d{4}-\d{2}-\d{2}\z/ then from + 1.day
-        when /:\d{2}(?:Z|[+-]\d{2}:?\d{2})?\z/ then from + 1.second
-        else from + 1.minute
-        end
+    zone = '(?:Z|[+-]\d{2}:?\d{2})?'
+    before = case raw
+             when /\A\d{4}\z/ then from + 1.year
+             when /\A\d{4}-\d{2}\z/ then from + 1.month
+             when /\A\d{4}-\d{2}-\d{2}\z/ then from + 1.day
+             when /\A\d{4}-\d{2}-\d{2}T\d{2}#{ zone }\z/ then from + 1.hour
+             when /\A\d{4}-\d{2}-\d{2}T\d{2}:\d{2}#{ zone }\z/ then from + 1.minute
+             when /\A\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}#{ zone }\z/ then from + 1.second
+             when /\A\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+#{ zone }\z/ then from + 0.001
+             else return nil
+             end
     [from, before]
   rescue ArgumentError, TypeError
     nil