# ===========================================================================
# Project:   Abbot - SproutCore Build Tools
# Copyright: ©2009 Apple Inc.
#            portions copyright @2006-2009 Sprout Systems, Inc.
#            and contributors
# ===========================================================================

require File.expand_path(File.join(File.dirname(__FILE__), 'base'))

module SC

  # Builds a bundle_loaded.js file which MUST be the last JavaScript to load
  # in a framework.
  class Builder::BundleLoaded < Builder::Base
    
    def build(dst_path)
      writelines dst_path, ["; if ((typeof SC !== 'undefined') && SC && SC.bundleDidLoad) SC.bundleDidLoad('#{entry.target.target_name.to_s.sub(/^\//,'')}');"]
    end
    
  end
  
  # Builds a bundle_info.js file which MUST be run *before* the framework is 
  # loaded by the application or framework doing the loading.
  class Builder::BundleInfo < Builder::Base
    
    def build(dst_path)
      begin
        require 'erubis'
      rescue
        raise "Cannot render bundle_info.js because erubis is not installed. Try running 'sudo gem install erubis' and try again."
      end
      
      eruby = Erubis::Eruby.new <<-EOT
        ;(function() {
          var target_name = '<%= @target_name %>' ;
          if (!SC.BUNDLE_INFO) throw "SC.BUNDLE_INFO is not defined!" ;
          if (SC.BUNDLE_INFO[target_name]) return ; <%# not an error... %>
          
          <%# first time, so add a Hash with this target's bundle_info %>
          SC.BUNDLE_INFO[target_name] = {
            requires: [<%= @requires.join(',') %>],
            styles:   [<%= @styles.join(',') %>],
            scripts:  [<%= @scripts.join(',') %>]
          }
        })();
      EOT
      
      output = ""
      entry.targets.each do |t|
        bundle_info = t.bundle_info({ :debug => entry.debug, :test => entry.test, :theme => entry.theme, :variation => entry.variation })
        output << eruby.evaluate({
          :target_name => t.target_name.to_s.sub(/^\//,''),
          :requires => bundle_info.requires.map{ |t| "'#{t.target_name.to_s.sub(/^\//,'')}'" },
          :styles   => bundle_info.css_urls.map{ |url| "'#{url}'" },
          :scripts  => bundle_info.js_urls.map{  |url| "'#{url}'" }
        })
      end
      writelines dst_path, [output]
    end
    
  end
  
end