Rakefile in dropzonejs-rails-0.3.2 vs Rakefile in dropzonejs-rails-0.4.0

@@ -5,33 +5,74 @@
   puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
 end
 
 Bundler::GemHelper.install_tasks
 
-require 'dropzonejs-rails'
 require 'open-uri'
+require 'octokit'
+require 'dropzonejs-rails'
 
 desc 'Get latest dropzone js build'
 task :get do
+  puts "Fetching dropzone v#{DropzonejsRails::DROPZONE_VERSION}..."
+
   download_dropzone_file 'dropzone.js', 'vendor/assets/javascripts/dropzone.js'
   download_dropzone_file 'css/basic.css', 'vendor/assets/stylesheets/dropzone/basic.css.scss'
   download_dropzone_file 'css/dropzone.css', 'vendor/assets/stylesheets/dropzone/dropzone.css.scss'
   download_dropzone_file 'images/spritemap.png', 'vendor/assets/images/dropzone/spritemap.png'
   download_dropzone_file 'images/[e-mail]', 'vendor/assets/images/dropzone/[e-mail]'
 
+  puts "Fixing image paths..."
   fix_image_links 'vendor/assets/stylesheets/dropzone/basic.css.scss'
   fix_image_links 'vendor/assets/stylesheets/dropzone/dropzone.css.scss'
+
+  puts "Done."
 end
 
+desc 'Find the latest dropzone js version and get it'
+task :check do
+  latest_version = Octokit.tags('enyo/dropzone').first.name.gsub(/[^\d\.]/, '')
+
+  if latest_version != DropzonejsRails::DROPZONE_VERSION
+    version = File.join(File.dirname(__FILE__), 'lib', 'dropzonejs-rails', 'version.rb')
+    sed version, {
+      /DROPZONE_VERSION\s+=\s+'#{DropzonejsRails::DROPZONE_VERSION}'/ => "DROPZONE_VERSION = '#{latest_version}'",
+      /\sVERSION\s+=\s+'#{DropzonejsRails::VERSION}'/ => " VERSION = '#{new_version}'"
+    }
+
+    readme = File.join(File.dirname(__FILE__), 'README.md')
+    sed readme, { /\*\*Dropzone v#{DropzonejsRails::DROPZONE_VERSION}\*\*/ => "**Dropzone v#{latest_version}**" }
+
+    puts "A new version of dropzone (v#{latest_version}) has been found, and the source files have been accordingly updated.\nYou may now run: `rake get` to get it."
+  else
+    puts "The bundled version of dropzone (v#{DropzonejsRails::DROPZONE_VERSION}) already is the latest one."
+  end
+end
+
 def download_dropzone_file(source_file, target_file)
   source = "https://raw.github.com/enyo/dropzone/v#{DropzonejsRails::DROPZONE_VERSION}/downloads/#{source_file}"
   target = DropzonejsRails::Engine.root.join(target_file)
 
   File.open(target, 'wb+') { |f| f << open(source, 'rb').read }
 end
 
 def fix_image_links(css_file)
-  file_name = DropzonejsRails::Engine.root.join(css_file)
+  file_name    = DropzonejsRails::Engine.root.join(css_file)
   original_css = File.read(file_name)
-  fixed_css = original_css.gsub(/url\(\"\.\.\/images\/(.+\.png)\"\)/, 'image-path("dropzone/\1")')
-  File.open(file_name, "w") {|file| file << fixed_css}
+  fixed_css    = original_css.gsub(/url\(\"\.\.\/images\/(.+\.png)\"\)/, 'image-path("dropzone/\1")')
+
+  File.open(file_name, 'w') { |file| file << fixed_css }
 end
+
+def sed(filename, replacements)
+  contents = File.read(filename)
+  replacements.each_pair do |pattern, replacement|
+     contents.gsub!(pattern, replacement)
+  end
+  File.write filename, contents
+end
+
+def new_version
+  parts = DropzonejsRails::VERSION.split('.')
+  parts[2] = parts[2].to_i + 1
+  parts.join '.'
+end
\ No newline at end of file