Added scheduler.rb

station.liq

@@ -14,7 +14,10 @@ let json.parse ({ storage, icecast = { host, port, mount, source_username, sourc
   = file.contents("config.json")
 
 storage_base = storage
-music_dir = "#{storage}/music"
+music_dir         = "#{storage}/music"
+jingles_dir       = "#{storage}/jingles"
+announcements_dir = "#{storage}/announcements"
+podcasts_dir      = "#{storage}/podcasts"
 queue_dir = "#{storage}/queues"
 
 icecast_host = host
@@ -25,19 +28,32 @@ icecast_pass = source_password
 
 print("Config loaded: storage=#{storage_base}, icecast=#{icecast_host}:#{icecast_port}#{icecast_mount}")
 
-# --- Background music playlist (loops forever by default) ---
-background_music = playlist(music_dir)
+# --- Background source: rotate among the featured directories, with 0.5 s
+# crossfades between tracks. Each playlist(dir) reads its directory
+# recursively, so audio in sub-directories is included automatically.
+music_pl         = playlist(music_dir)
+jingles_pl       = playlist(jingles_dir)
+announcements_pl = playlist(announcements_dir)
+podcasts_pl      = playlist(podcasts_dir)
+
+# Rotate among the four directories; transition_length bounds each handoff.
+rotating_bg = rotate(transition_length=0.5, [music_pl, jingles_pl, announcements_pl, podcasts_pl])
+
+# Crossfade 0.5 s between consecutive tracks of the rotated stream.
+background_music = crossfade(fade_in=0.5, fade_out=0.5, rotating_bg)
 
 # --- Show queue source (reads current_queue.txt each tick) ---
 # In 2.2.x the callback must return a request (type ()->request), not null.
-# When the queue is empty we play a short synthesized tone so the source
-# stays up without needing an external file.
+# When the queue is empty we return a NON-resolving URI ("noshow:"). Liquidsoap
+# fails to resolve it, so this source goes DOWN -- which is exactly what lets
+# fallback() drop through to the rotating background music below. (A resolvable
+# sentinel like synth: would keep the show source up forever, masking the music.)
 def read_queue()
   qf = "#{queue_dir}/current_queue.txt"
   if file.exists(qf) and file.contents(qf) != "" then
     request.create(file.contents(qf))
   else
-    request.create("synth:shape=sine,frequency=440.,duration=1.")
+    request.create("noshow:")
   end
 end