ng-segmentio.js

'use strict';

angular.module('segmentio', ['ng']).factory(
	'segmentio',
	['$rootScope', '$window', '$location', '$q',
		function($rootScope, $window, $location, $q) {
			var service = {};

			$window.analytics = $window.analytics || [];

			// Define a factory that generates wrapper methods to push arrays of
			// arguments onto our `analytics` queue, where the first element of the arrays
			// is always the name of the analytics.js method itself (eg. `track`).
			var methodFactory = function(method) {
				return function() {
					var args = Array.prototype.slice.call(arguments);
					args.unshift(method);
					$window.analytics.push(args);
					return $window.analytics;
				}
			};

			// Loop through analytics.js' methods and generate a wrapper method for each.
			var methods = [
				'identify', 'group', 'track',
				'page', 'pageview', 'alias', 'ready', 'on', 'once', 'off',
				'trackLink', 'trackForm', 'trackClick', 'trackSubmit', 'reset'
			];
			for(var i = 0; i < methods.length; i++) {
				service[methods[i]] = methodFactory(methods[i]);
			}

			/**
			 * @description
			 * Load Segment.io analytics script
			 * @param key The key API to use
			 */
			service.load = function(key) {
				var deferred = $q.defer();

				if(document.getElementById('analytics-js')) {
					deferred.resolve($window.analytics);
				} else {
					// Create an async script element based on your key.
					var script = document.createElement('script');
					script.type = 'text/javascript';
					script.id = 'analytics-js';
					script.async = true;
					script.src = 'https://cdn.segment.io/analytics.js/v1/' + key + '/analytics.min.js';
					script.onload = script.onreadystatechange = function() {
						deferred.resolve($window.analytics);
					};

					// Insert our script next to the first script element.
					var first = document.getElementsByTagName('script')[0];
					first.parentNode.insertBefore(script, first);
				}

				return deferred.promise;
			};

			// Add a version to keep track of what's in the wild.
			$window.analytics.SNIPPET_VERSION = '3.0.1';

			// Listening to $viewContentLoaded event to track pageview
			//$rootScope.$watch(function() {
			//	return $location.path();
			//}, function(value) {
			//	service.page(value);
			//});

			return service;
		}]);