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134 lines
3.6 KiB
134 lines
3.6 KiB
(function(window, document){
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if(window.Sleuth !== undefined){
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return;
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}
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if(!window.btoa){
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var base64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
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window.btoa = function(data){
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var result = '';
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var padding = '';
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var padCount = data.length % 3;
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if(padCount > 0){
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for(; padCount < 3; ++padCount){
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padding += '=';
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data += '\0';
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}
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}
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for(var i = 0; i < data.length; i += 3){
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var next = (data.charCodeAt(i) << 16) + (data.charCodeAt(i + 1) << 8) + data.charCodeAt(i + 2);
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next = [(next >>> 18) & 63, (next >>> 12) & 63, (next >>> 6) & 63, next & 63];
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result += base64chars[next[0]] + base64chars[next[1]] + base64chars[next[2]] + base64chars[next[3]];
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}
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return result.substring(0, result.length - padding.length) + padding;
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};
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}
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var encodeObject = function(data){
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var query = [];
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for(var key in data){
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query.push(encodeURIComponent(key) + '=' + encodeURIComponent(data[key]));
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};
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return query.join('&');
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};
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var post = function(url, data, tags){
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var req = new XMLHttpRequest();
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url += '?' + encodeObject(tags);
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req.open('POST', url, true);
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req.send(JSON.stringify(data));
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};
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var drop = function(url, data, tags){
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tags.d = window.btoa(JSON.stringify(data));
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tags.n = new Date().getTime();
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tags.r = Math.random() * 99999999;
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url += '?' + encodeObject(tags);
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document.write('<sc' + 'ript type="text/javascript" src="' + url + '"></scri' + 'pt>');
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};
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var Sleuth = function(){
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this.config = {
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url: '/track',
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unload: true,
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ajax: true,
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performance: true,
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useLocalStorage: true,
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};
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this.tags = {};
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this.data = {};
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};
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Sleuth.prototype.init = function(options){
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for(var key in options){
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this.config[key] = options[key];
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}
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};
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Sleuth.prototype.captureWindowPerformance = function(){
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if(this.config.performance && window.performance !== undefined){
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if(window.performance.timing !== undefined){
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this.data.timing = window.performance.timing;
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}
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if(window.performance.navigation !== undefined){
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this.data.navigation = {
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redirectCount: window.performance.navigation.redirectCount,
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type: window.performance.navigation.type,
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};
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}
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}
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};
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Sleuth.prototype.onunload = function(){
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if(this.config.performance){
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this.captureWindowPerformance();
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}
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if(this.config.unload){
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this.sendAllData();
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}
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};
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Sleuth.prototype.sendData = function(data){
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if(this.config.ajax){
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post(this.config.url, data, this.tags);
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} else {
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drop(this.config.url, data, this.tags);
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}
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};
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Sleuth.prototype.sendAllData = function(){
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var toSend = this.data;
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this.data = {};
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if(this.config.useLocalStorage){
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for(var key in window.localStorage){
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if(key.indexOf('Sleuth:') === 0){
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var value = window.localStorage.getItem(key);
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window.localStorage.removeItem(key);
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key = key.substring(6);
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toSend[key] = value;
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}
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}
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}
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this.sendData(this.config.url, toSend, this.tags);
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};
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Sleuth.prototype.track = function(key, value){
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if(this.config.useLocalStorage && window.localStorage !== undefined){
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window.localStorage.setItem('Sleuth:' + key, value);
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} else {
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this.data[key] = value;
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}
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};
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Sleuth.prototype.tag = function(key, value){
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this.tags[key] = value;
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};
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window.Sleuth = new Sleuth();
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window.onbeforeunload = window.Sleuth.onunload.bind(window.Sleuth);
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})(window, document);
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