#399

backend/app/services/post_metadata_fetcher.rb

@@ -1,10 +1,19 @@
 class PostMetadataFetcher
   def self.fetch raw_url
     uri, = Preview::UrlSafety.validate(raw_url)
-    response = Preview::HttpFetcher.fetch(uri.to_s, max_bytes: Preview::ThumbnailFetcher::HTML_MAX_BYTES)
+    response = Preview::HttpFetcher.fetch(
+      uri.to_s,
+      max_bytes: Preview::ThumbnailFetcher::HTML_MAX_BYTES,
+    )
     metadata = Preview::HtmlMetadataExtractor.extract(response)
     document = Nokogiri::HTML.parse(response.body)
-    content = -> name { document.at_css("meta[property='#{ name }'], meta[name='#{ name }']")&.[]('content')&.strip.presence }
+    content = lambda { |name|
+      document
+        .at_css("meta[property='#{ name }'], meta[name='#{ name }']")
+        &.[]('content')
+        &.strip
+        &.presence
+    }
     duration = content.call('og:video:duration') || content.call('video:duration')
     published = content.call('article:published_time') || content.call('date')
     created_range = original_created_range(published)
@@ -30,17 +39,19 @@ class PostMetadataFetcher
     raw = value.to_s.strip
     from = Time.zone.parse(raw)
     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/
-               from + (10**(-Regexp.last_match(1).length))
-             else return nil
-             end
+    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/
+        from + (10**(-Regexp.last_match(1).length))
+      else
+        return nil
+      end
     [from, before]
   rescue ArgumentError, TypeError
     nil