lib/time_block/cli.rb in time_block-0.0.1 vs lib/time_block/cli.rb in time_block-0.0.3

@@ -1,12 +1,18 @@
 require 'time_block'
 
 class TimeBlock::CLI
   def self.start(*args)
+    fail 'No terminal-notifier, please install it, brew install terminal-notifier' unless terminal_notifier_exist?
     time = args.shift.strip.to_i
     sleep time
     `terminal-notifier -message #{"Time is out dude !!!".dump} -title "TimeBlock - #{time}s" -sound "default"`
   rescue => e
     puts e.message
     exit(1)
+  end
+
+  def self.terminal_notifier_exist?
+    `which terminal-notifier`
+    $? == 0
   end
 end