require "application"

desc "Finds unused or obsolete views"
task :unused_views => :environment do
  # First find controllers  
  all_controllers = Dir.glob("#{RAILS_ROOT}/app/controllers/*_controller.rb")
  all_controllers.each do |controller|
    controller_file = File.basename(controller, '.rb')
    controller_short = File.basename(controller, '_controller.rb')
    require controller_file
    controller_name = controller_file.camelize
    controller = controller_name.constantize
    
    # Find methods
    methods = controller.instance_methods - ActionController::Base.instance_methods - ApplicationController.instance_methods
    
    # Find views
    view_files = Dir.glob("#{RAILS_ROOT}/app/views/#{controller_short}/*.rhtml")
    view_files.map! {|file| File.basename(file,'.rhtml')}
    view_files.reject! {|file| file =~ /^_/ }
    
    view_files.each do |vf|
      unless methods.include?(vf)
        puts "Obsolete view #{controller_short}/#{vf}.rhtml"
      end
    end
  end
end