Add ability to link to a timecode on youtube

1 files changed, 15 insertions, 1 deletions

diff --git a/lib/recording.rb b/lib/recording.rb
index 68b0428..f2ee251 100644
--- a/lib/recording.rb
+++ b/lib/recording.rb
@@ -13,10 +13,24 @@ class YouTubeRecording
     @vid = parse_vid link
   end
 
-  def parse_vid link
+  def parse_id link
     /\?v=(.{11})/.match(link)[1]
   end
 
+  # Timecodes in links have to be specified in seconds (the "start" query for
+  # embeds doesn't understand "XmYs" like "t" on regular links).
+  def parse_timequery link
+    match = /&t=([0-9]+)/.match(link)
+
+    match ? "?start=#{match[1]}" : ""
+  end
+
+  def parse_vid link
+    id = parse_id link
+    timequery = parse_timequery link
+    "#{id}#{timequery}"
+  end
+
   def render
     template = ERB.new(File.read('templates/youtube.html.erb'), trim_mode: '-')
     template.result binding