module.exports = (function () {
  'use strict';

  var fs = require('fs');
  var path = require('path');

  var COMMONJS_BANNER = '// This file is autogenerated via the `commonjs` Grunt task. You can require() this file in a CommonJS environment.\n';

  var commonJs = function (grunt, srcFiles, destFilepath) {
    function moduleRequireStatement(srcFilepath) {
      return 'require(\'' + srcFilepath.replace(/\\/g, '/') + '\')';
    }

    var moduleOutputJs = COMMONJS_BANNER + srcFiles.map(moduleRequireStatement).join('\n');
    try {
      fs.writeFileSync(destFilepath, moduleOutputJs);
    } catch (err) {
      grunt.fail.warn(err);
    }
    grunt.log.writeln('File ' + destFilepath.cyan + ' created.');
  }


  var SYSTEMJS_BANNER = '// This file is autogenerated via the `systemjs` Grunt task. You can import this file in a SystemJS environment.\n';

  var systemJs = function (grunt, srcFiles, destFilepath) {
    function moduleRequireStatement(srcFilepath) {
      return 'System.import(\'' + srcFilepath.replace(/\\/g, '/') + '\')';
    }

    var moduleOutputJs = SYSTEMJS_BANNER + srcFiles.map(moduleRequireStatement).join('\n');
    try {
      fs.writeFileSync(destFilepath, moduleOutputJs);
    } catch (err) {
      grunt.fail.warn(err);
    }
    grunt.log.writeln('File ' + destFilepath.cyan + ' created.');
  }

  return {
    commonJs: commonJs,
    systemJs: systemJs
  }
}())