Create pacman-update-notify.rb

pacman-update-notify.rb

@@ -0,0 +1,49 @@
+#!/usr/bin/env ruby
+
+require "dbus" 
+require "logger"
+
+Thread.abort_on_exception = true
+
+interval = ARGV.fetch(0) { 3600 }
+last_check = 0
+update_queue = Queue.new
+threads = []
+@dbus = DBus.session_bus["org.freedesktop.Notifications"]["/org/freedesktop/Notifications"]["org.freedesktop.Notifications"]
+@log = Logger.new(STDOUT)
+@log.formatter = proc do |severity, datetime, _progname, message|
+  "[#{severity}]  #{datetime}  #{message}\n"
+end
+
+def notify(updates)
+  message = "#{updates} updates available"
+  @log.info { message }
+  @dbus.Notify("pacman", 0, "package-x-generic", "Pacman", message, [], [], 3000)
+end
+
+threads << Thread.new do
+  @log.info { "Checking every #{interval} seconds" }
+  loop do
+    @log.info { "Checking for updates..." }
+    update_queue << `pacman -Qqu`.split("\n").size
+    sleep(interval.to_i)
+  end
+end
+
+threads.last.name = "UpdateCheck"
+
+threads << Thread.new do
+  loop do
+    updates = update_queue.deq
+    if updates != last_check
+      last_check = updates
+      notify(updates)
+    else
+      @log.info { "No new updates available" }
+    end
+  end
+end
+
+threads.last.name = "UpdateNotify"
+
+threads.each(&:join)