require 'rbconfig'

class CbacGenerator < Rails::Generator::Base
  def initialize(runtime_args, runtime_options = {})
    super
    #puts runtime_args
    #raise "silently quiting"
  end

  def migration_exists?(name)
    not Dir.glob("#{RAILS_ROOT}/db/migrate/[0-9]*_*.rb").grep(/[0-9]+_#{name}.rb$/).empty?
  end

  def manifest
    record do |m|
      # developer files
      m.directory "config/cbac"
      m.file "config/privileges.rb", "config/cbac/privileges.rb", :collision => :skip
      m.file "config/context_roles.rb", "config/cbac/context_roles.rb", :collision => :skip

      # deployment file
      m.file "config/cbac.pristine", "config/cbac/cbac.pristine", :collision => :skip

      # administration pages
      m.directory "app/controllers/cbac"
      m.file "controllers/permissions_controller.rb", "app/controllers/cbac/permissions_controller.rb"
      m.file "controllers/generic_roles_controller.rb", "app/controllers/cbac/generic_roles_controller.rb"
      m.file "controllers/memberships_controller.rb", "app/controllers/cbac/memberships_controller.rb"
      m.file "controllers/upgrade_controller.rb", "app/controllers/cbac/upgrade_controller.rb"
      m.directory "app/views/layouts"
      m.file "views/layouts/cbac.html.erb", "app/views/layouts/cbac.html.erb"
      m.directory "app/views/cbac"
      m.directory "app/views/cbac/permissions"
      m.directory "app/views/cbac/generic_roles"
      m.directory "app/views/cbac/memberships"
      m.directory "app/views/cbac/upgrade"
      m.file "views/permissions/index.html.erb", "app/views/cbac/permissions/index.html.erb"
      m.file "views/permissions/_update_context_role.html.erb", "app/views/cbac/permissions/_update_context_role.html.erb"
      m.file "views/permissions/_update_generic_role.html.erb", "app/views/cbac/permissions/_update_generic_role.html.erb"
      m.file "views/generic_roles/index.html.erb", "app/views/cbac/generic_roles/index.html.erb"
      m.file "views/memberships/index.html.erb", "app/views/cbac/memberships/index.html.erb"
      m.file "views/memberships/_update.html.erb", "app/views/cbac/memberships/_update.html.erb"
      m.file "views/upgrade/index.html.erb", "app/views/cbac/upgrade/index.html.erb"
      m.directory "public/stylesheets"
      m.file "stylesheets/cbac.css", "public/stylesheets/cbac.css"

      # migrations
      puts "type of m: " + m.class.name
      if migration_exists?("create_cbac")
        # This is an upgrade from a previous version of CBAC
        m.migration_template "migrate/create_cbac_upgrade_path.rb", "db/migrate", {:migration_file_name => "create_cbac_upgrade_path"} unless migration_exists?("create_cbac_upgrade_path")
      else
        # This is the first install of CBAC into the current project	
        m.migration_template "migrate/create_cbac_from_scratch.rb", "db/migrate", {:migration_file_name => "create_cbac_from_scratch"} unless migration_exists?("create_cbac_from_scratch")
      end
      # default fixtures
      m.file "fixtures/cbac_permissions.yml", "test/fixtures/cbac_permissions.yml"
      m.file "fixtures/cbac_generic_roles.yml", "test/fixtures/cbac_generic_roles.yml"
      m.file "fixtures/cbac_memberships.yml", "test/fixtures/cbac_memberships.yml"

      # Rake task
      m.directory "lib/tasks"
      m.file "tasks/cbac.rake", "lib/tasks/cbac.rake"
    end
  end
end