From 7cd1bf8d36a8d7cd16aa78addb071c17578b9f97 Mon Sep 17 00:00:00 2001
From: chang-ning <spiderpower02@gmail.com>
Date: Sat, 6 Oct 2018 09:10:35 +0800
Subject: [PATCH] support analytics

---
 app.py                      |  2 ++
 docs/_templates/layout.html | 13 +++++++++++++
 docs/conf.py                |  1 +
 3 files changed, 16 insertions(+)

diff --git a/app.py b/app.py
index bf788029..488ea463 100644
--- a/app.py
+++ b/app.py
@@ -27,6 +27,8 @@ def find_key(token):
     "script-src": [
         "'self'",
         "*.cloudflare.com",
+        "*.googletagmanager.com",
+        "*.google-analytics.com",
         "'unsafe-inline'",
         "'unsafe-eval'",
     ],
diff --git a/docs/_templates/layout.html b/docs/_templates/layout.html
index 70050e32..7cf23ad4 100644
--- a/docs/_templates/layout.html
+++ b/docs/_templates/layout.html
@@ -1,2 +1,15 @@
 {% extends "!layout.html" %}
+{%- block extrahead %}
+{%- if tracking_id %}
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={{ tracking_id }}"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', '{{ tracking_id }}');
+</script>
+{% endif -%}
+{% endblock %}
 {% set css_files = css_files + [ "_static/style.css" ] %}
diff --git a/docs/conf.py b/docs/conf.py
index e4d6df99..9d0881dc 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -132,6 +132,7 @@
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
 html_title = "pysheeet"
+html_context = {"tracking_id": os.environ.get("TRACKING_ID")}
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
 #html_short_title = None