i3blocks: use ruby for strawberry current song

When using shellscript for dbus properties, I parsed the output
manually. It was not really good and special characters were not
displayed correctly.

i3blocks/multi/blocks/strawberry-current.rb

@@ -0,0 +1,32 @@
+#!/usr/bin/env ruby
+
+require "dbus"
+
+def seconds_to_ms(sec)
+  sec /= 1000000
+  "%02d:%02d" % [sec / 60, sec % 60]
+end
+
+service   = DBus.session_bus["org.mpris.MediaPlayer2.strawberry"]
+unless service.exists?
+  puts 'Strawberry not running'
+  exit 1
+end
+
+object    = service["/org/mpris/MediaPlayer2"]
+interface = object["org.mpris.MediaPlayer2.Player"]
+
+metadata = interface["Metadata"]
+
+if metadata.empty?
+  puts 'No song in playlist'
+  exit 2
+end
+
+position = interface["Position"]
+playback_status = interface["PlaybackStatus"]
+
+
+printf "(#{playback_status}) " if playback_status != 'Playing'
+puts "#{metadata['xesam:albumArtist'].join(', ')} - #{metadata['xesam:album']} - #{metadata['xesam:title']} " \
+  "(#{metadata['xesam:trackNumber']}) [#{seconds_to_ms(position)} / #{seconds_to_ms(metadata['mpris:length'])}]"

i3blocks/multi/left-config

@@ -3,7 +3,7 @@ separator_block_width=10
 markup=none
 
 [mpc]
-command=./blocks/strawberry.sh
+command=./blocks/strawberry-current.rb
 interval=5
 signal=12