Blob file download in Angular.js using $resource Part 1

gistfile1.js

(function () {
  'use strict';

  angular
    .module('app')
    .factory('Email', Email);

  function Email($resource) {
    var url = 'emails/'
      , EmailBase;

    EmailBase = $resource(url + ':emailId', {emailId: '@id'}, {
      getFile: {
        method: 'GET',
        url: url + ':emailId/files/:fileName',
        params: {
          emailId: '@id',
          fileName: '@fileName'
        },
        cache: false
      }
    });

    return EmailBase;
  }
}());