//Load the requirejs optimizer
var requirejs = require('<%= rjs_path %>'),
  //Set up basic config, include config that is
  //common to all the optimize() calls.
  baseConfig = <%=
    modifiedHash = build_config.select {|k, _| k != "modules"}
    pathsHash = modifiedHash["paths"]
    modifiedHash["paths"] = pathsHash.select {|_, v| !v.is_a?(Array)} if !pathsHash.nil?

    JSON.pretty_generate(modifiedHash)
  %>;

// Function used to mix in baseConfig to a new config target
function mix(target) {
  for (var prop in baseConfig) {
    if (baseConfig.hasOwnProperty(prop)) {
      target[prop] = baseConfig[prop];
    }
  }
  return target;
}

var module_specs = [
<% build_config['modules'].each do |m| %>
<%= JSON.pretty_generate(m.merge 'out' => module_path_for(m).to_s ) %>,
<% end %>
];

// Error handler invoked in case requirejs compilation fails
var errback = function(error) {
  process.stderr.write(error.toString());
  process.exit(1);
}

// Do a series of builds of individual files, using the args suggested by:
// http://requirejs.org/docs/optimization.html#onejs
//
// r.js will eventually need a nested call idiom to handle async 
// builds.  Anticipating that need.
var async_runner = module_specs.reduceRight(function(prev, curr) {
  return function (buildReportText) {
    requirejs.optimize(mix(curr), prev);
    requirejs.optimize(mix(curr), prev, errback);
  };
}, function(buildReportText) {} );

async_runner();