| // Copyright 2016 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package analytics |
| |
| // analytics.go is contains public functions for getting |
| // the Google Analytics ID and javascript snippets out from the admin settings. |
| |
| import ( |
| "context" |
| "fmt" |
| "html/template" |
| |
| "go.chromium.org/luci/common/logging" |
| ) |
| |
| // ID returns the Google Analytics ID if it's set, and "" otherwise. |
| func ID(c context.Context) string { |
| return fetchCachedSettings(c).AnalyticsID |
| } |
| |
| // Snippet returns the html snippet for Google Analytics, including the |
| // <script> tag and ID, if ID is set. |
| func Snippet(c context.Context) template.HTML { |
| id := ID(c) |
| if id == "" { |
| return "" |
| } |
| if !rAllowed.MatchString(id) { |
| logging.Errorf(c, "Analytics ID %s does not match UA-\\d+-\\d+", id) |
| return "" |
| } |
| return template.HTML(fmt.Sprintf(` |
| <script> |
| setTimeout(function() { |
| (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ |
| (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), |
| m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) |
| })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); |
| |
| ga('create', '%s', 'auto'); |
| ga('send', 'pageview'); |
| }, 0); |
| </script> |
| `, template.JSEscapeString(id))) |
| } |