feat(custom): event based mediaplayer script

resources/config

@@ -78,8 +78,6 @@
     "custom/spotify": {
         "format": " {}",
         "max-length": 40,
-        "interval": 30, // Remove this if your script is endless and write in loop
-        "exec": "$HOME/.config/waybar/mediaplayer.sh 2> /dev/null", // Script in resources folder
-        "exec-if": "pgrep spotify"
+        "exec": "$HOME/.config/waybar/mediaplayer.py 2> /dev/null" // Script in resources folder
     }
 }

resources/custom_modules/mediaplayer.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+import sys
+import signal
+import gi
+gi.require_version('Playerctl', '2.0')
+from gi.repository import Playerctl, GLib
+
+manager = Playerctl.PlayerManager()
+loop = GLib.MainLoop()
+
+
+def on_play(player, status, manager):
+    on_metadata(player, player.props.metadata, manager)
+
+
+def on_metadata(player, metadata, manager):
+    track_info = ''
+
+    if player.props.player_name == 'spotify' \
+            'mpris:trackid' in metadata.keys() and \
+            ':ad:' in player.props.metadata['mpris:trackid']:
+        track_info = 'AD PLAYING'
+    elif player.get_artist() != '' and player.get_title() != '':
+        track_info = '{artist} - {title}'.format(artist=player.get_artist(),
+                                                 title=player.get_title())
+    else:
+        sys.stdout.write('\n')
+        sys.stdout.flush()
+        return
+
+    if player.props.status == 'Playing':
+        sys.stdout.write(track_info + '\n')
+    else:
+        sys.stdout.write(' ' + track_info + '\n')
+    sys.stdout.flush()
+
+
+def on_name_appeared(manager, name):
+    init_player(name)
+
+
+def on_player_vanished(manager, player):
+    sys.stdout.write("\n")
+    sys.stdout.flush()
+
+
+def init_player(name):
+    player = Playerctl.Player.new_from_name(name)
+    player.connect('playback-status', on_play, manager)
+    player.connect('metadata', on_metadata, manager)
+    manager.manage_player(player)
+    on_metadata(player, player.props.metadata, manager)
+
+
+def signal_handler(sig, frame):
+    sys.stdout.write("\n")
+    sys.stdout.flush()
+    loop.quit()
+    sys.exit(0)
+
+
+manager.connect('name-appeared', on_name_appeared)
+manager.connect('player-vanished', on_player_vanished)
+
+signal.signal(signal.SIGINT, signal_handler)
+signal.signal(signal.SIGTERM, signal_handler)
+
+for player in manager.props.player_names:
+    init_player(player)
+
+loop.run()

resources/custom_modules/mediaplayer.sh

@@ -1,7 +0,0 @@
-#!/bin/sh
-player_status=$(playerctl status 2> /dev/null)
-if [ "$player_status" = "Playing" ]; then
-    echo "$(playerctl metadata artist) - $(playerctl metadata title)"
-elif [ "$player_status" = "Paused" ]; then
-    echo " $(playerctl metadata artist) - $(playerctl metadata title)"
-fi