feat: stream generation refactor

Online playlist organized in folders instead of playlists

Handle events for live show start and end

Dockerfile

@@ -1,4 +1,4 @@
-FROM savonet/liquidsoap-alpine:v2.1.4
+FROM savonet/liquidsoap-alpine:v2.2.2
 
 USER root
 

main.liq

@@ -4,25 +4,55 @@ settings.harbor.bind_addrs.set(["0.0.0.0"])
 enable_replaygain_metadata()
 
 def print_meta(data)
-  artist = data["artist"]
-  title = data["title"]
+  a = data["artist"]
+  t = data["title"]
 
-  meta = json()
-  meta.add("artist", artist)
-  meta.add("title", title)
+  message = json()
+  message.add("command", "metadataChange");
+  message.add("data", { artist = a, title = t})
 
-  http.post(data=meta.stringify(), headers=[("Content-Type", "application/json; charset=UTF-8")], "metadata:4000")
+  http.post(data=message.stringify(), headers=[("Content-Type", "application/json; charset=UTF-8")], "metadata:4000")
   ()
 end
 
-security = synth.all.sine(id="sine")
-main_air_playlist = playlist("/music/main_air.pls")
-general_playlist = replaygain(random([main_air_playlist]))
-general_stream = normalize(crossfade(general_playlist))
-live_stream = input.harbor("iceberg-live", port=6000, user="djiceberg", password="hackme")
-  
-radio = fallback(track_sensitive = false, [live_stream, general_stream, security])
+def live_start(_)
+  message = json()
+  message.add("command", "liveStarted");
+  http.post(data=message.stringify(), headers=[("Content-Type", "application/json; charset=UTF-8")], "metadata:4000")
+  ()
+end
+
+def live_end()
+  message = json()
+  message.add("command", "liveEnded");
+  http.post(data=message.stringify(), headers=[("Content-Type", "application/json; charset=UTF-8")], "metadata:4000")
+  ()
+end
 
+security = single("/music/jingle.mp3")
+
+arctica_music = playlist("/music/arctica/music")
+arctica_jingles = playlist("/music/arctica/jingles")
+arctica = replaygain(rotate(weights=[5, 1], [arctica_music, arctica_jingles]))
+
+jellyfish_migrations_music = playlist("/music/main_air")
+jellyfish_migrations = replaygain(jellyfish_migrations_music)
+
+general_stream = normalize(switch([
+  ({13h-15h}, arctica),
+  ({true}, jellyfish_migrations)
+]))
+
+live_stream = input.harbor(
+  "iceberg-live",
+  port=6000,
+  user="djiceberg",
+  password="hackme",
+  on_connect=live_start,
+  on_disconnect=live_end
+)
+
+radio = fallback(track_sensitive = false, [live_stream, general_stream, security])
 radio.on_metadata(print_meta)
 
 output.icecast(%mp3,