(function () { // Object.assign polyfill from https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign#Polyfill Object.assign||Object.defineProperty(Object,"assign",{enumerable:!1,configurable:!0,writable:!0,value:function(e){"use strict";if(void 0===e||null===e)throw new TypeError("Cannot convert first argument to object");for(var r=Object(e),t=1;t<arguments.length;t++){var n=arguments[t];if(void 0!==n&&null!==n){n=Object(n);for(var o=Object.keys(Object(n)),a=0,c=o.length;c>a;a++){var i=o[a],b=Object.getOwnPropertyDescriptor(n,i);void 0!==b&&b.enumerable&&(r[i]=n[i])}}}return r}}); var sixpack = {base_url: "http://localhost:5000", ip_address: null, user_agent: null, timeout: 1000}; // check for node module loader var on_node = false; if (typeof module !== "undefined" && typeof require !== "undefined") { on_node = true; module.exports = sixpack; } else { window["sixpack"] = sixpack; } sixpack.generate_client_id = function () { // from http://stackoverflow.com/questions/105034 return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8); return v.toString(16); }); }; sixpack.Session = function (options) { Object.assign(this, sixpack, options); if (!this.client_id) { this.client_id = this.generate_client_id(); } if (!on_node) { this.user_agent = this.user_agent || (window && window.navigator && window.navigator.userAgent); } }; sixpack.Session.prototype = { participate: function(experiment_name, alternatives, traffic_fraction, force, callback) { if (typeof traffic_fraction === "function") { callback = traffic_fraction; traffic_fraction = null; force = null; } else if (typeof traffic_fraction === "string") { callback = force; force = traffic_fraction; traffic_fraction = null; } if (typeof force === "function") { callback = force; force = null; } if (!(/^[a-z0-9][a-z0-9\-_ ]*$/).test(experiment_name)) { return callback(new Error("Bad experiment_name")); } if (alternatives.length < 2) { return callback(new Error("Must specify at least 2 alternatives")); } for (var i = 0; i < alternatives.length; i += 1) { if (!(/^[a-z0-9][a-z0-9\-_ ]*$/).test(alternatives[i])) { return callback(new Error("Bad alternative name: " + alternatives[i])); } } var params = {client_id: this.client_id, experiment: experiment_name, alternatives: alternatives}; if (!on_node && force == null) { var regex = new RegExp("[\\?&]sixpack-force-" + experiment_name + "=([^&#]*)"); var results = regex.exec(window.location.search); if(results != null) { force = decodeURIComponent(results[1].replace(/\+/g, " ")); } } if (traffic_fraction !== null && !isNaN(traffic_fraction)) { params.traffic_fraction = traffic_fraction; } if (force != null && _in_array(alternatives, force)) { return callback(null, {"status": "ok", "alternative": {"name": force}, "experiment": {"version": 0, "name": experiment_name}, "client_id": this.client_id}); } if (this.ip_address) { params.ip_address = this.ip_address; } if (this.user_agent) { params.user_agent = this.user_agent; } return _request(this.base_url + "/participate", params, this.timeout, function(err, res) { if (err) { res = {status: "failed", error: err, alternative: {name: alternatives[0]}}; } return callback(null, res); }); }, convert: function(experiment_name, kpi, callback) { if (typeof kpi === 'function') { callback = kpi; kpi = null; } if (!(/^[a-z0-9][a-z0-9\-_ ]*$/).test(experiment_name)) { return callback(new Error("Bad experiment_name")); } var params = {client_id: this.client_id, experiment: experiment_name}; if (this.ip_address) { params.ip_address = this.ip_address; } if (this.user_agent) { params.user_agent = this.user_agent; } if (kpi) { params.kpi = kpi; } return _request(this.base_url + "/convert", params, this.timeout, function(err, res) { if (err) { res = {status: "failed", error: err,}; } return callback(null, res); }); } }; var counter = 0; var _request = function(uri, params, timeout, callback) { var timed_out = false; var timeout_handle = setTimeout(function () { timed_out = true; return callback(new Error("request timed out")); }, timeout); if (!on_node) { var cb = "callback" + (++counter); params.callback = "sixpack." + cb sixpack[cb] = function (res) { if (!timed_out) { clearTimeout(timeout_handle); return callback(null, res); } } } var url = _request_uri(uri, params); if (!on_node) { script = document.createElement('script'); script.type = 'text/javascript'; script.src = url; script.async = true; document.body.appendChild(script); } else { var http = require('http'); var req = http.get(url, function(res) { var body = ""; res.on('data', function(chunk) { return body += chunk; }); return res.on('end', function() { var data; if (res.statusCode == 500) { data = {status: "failed", response: body}; } else { data = JSON.parse(body); } if (!timed_out) { clearTimeout(timeout_handle); return callback(null, data); } }); }); req.on('error', function(err) { if (!timed_out) { clearTimeout(timeout_handle); return callback(err); } }); } }; var _request_uri = function(endpoint, params) { var query_string = []; var e = encodeURIComponent; for (var key in params) { if (params.hasOwnProperty(key)) { var vals = params[key]; if (Object.prototype.toString.call(vals) !== '[object Array]') { vals = [vals]; } for (var i = 0; i < vals.length; i += 1) { query_string.push(e(key) + '=' + e(vals[i])); } } } if (query_string.length) { endpoint += '?' + query_string.join('&'); } return endpoint; }; var _in_array = function(a, v) { for(var i = 0; i < a.length; i++) { if(a[i] === v) { return true; } } return false; }; })();