#!/usr/bin/env macruby

abort "Usage: #{__FILE__} [image]" if ARGV.empty?

framework "Cocoa"

wallpaper_path = File.expand_path(ARGV.first)
wallpaper_url  = NSURL.fileURLWithPath(wallpaper_path, isDirectory: false)
workspace      = NSWorkspace.sharedWorkspace

NSScreen.screens.each do |screen|
  workspace.setDesktopImageURL(wallpaper_url, forScreen:screen, options:nil, error:nil)
end