Enable to automatically convert 'time' in Shownote into links to corresponding YouTube with the time in Podcasts

Author: yasulab

app/controllers/podcasts_controller.rb

@@ -24,12 +24,13 @@ def show
       return redirect_to podcasts_path
     end
 
+    @youtube = @episode.content.match(/watch\?v=((\w)*)/)[1]
+    @url     = request.url
     @title   = @episode.title.split('-').last.strip
     @date    = @episode.published_date.strftime("%Y年%-m月%-d日（#{Podcast::WDAY2JAPANESE[@episode.published_date.wday]}）")
     @content = Kramdown::Document.new(
                                   self.convert_shownote(@episode.content),
                                   input: 'GFM').to_html
-    @url     = request.url
   end
 
   private
@@ -43,6 +44,13 @@ def convert_shownote(content)
       </h2>
     HTML
 
-    content.gsub(/(#+) Shownote/i, shownote)
+    content.gsub!(/(#+) Shownote/) { shownote }
+    content.gsub!(/-\s((\d:)?\d{1,}:\d{2})/) do
+        t = $1
+        t = (t.size ==  '0:00'.size) ?   '0' + t : t
+        t = (t.size == '00:00'.size) ? '00:' + t : t
+        t = Time.parse(t).seconds_since_midnight.to_i
+        "- [#{$1}](https://youtu.be/#{@youtube}?t=#{t}) &nbsp; "
+    end
   end
 end

app/views/podcasts/show.html.erb

@@ -20,6 +20,10 @@
     }
   }
   .episode-cover img { margin-bottom: 20px;}
+  .episode ul {
+    padding-left: 0px;
+    list-style: none;
+  }
 </style>
 
 <%= render 'podcasts/navigation' %>