From 3fbd5e351e83e31a579f61d7b2603999221e4d3d Mon Sep 17 00:00:00 2001
From: Paulus Schoutsen <paulus@paulusschoutsen.nl>
Date: Wed, 28 Feb 2018 10:46:24 -0800
Subject: [PATCH] Add user agent check to frontend (#955)

* Add user agent check to frontend

* Remove auto generated comment.
---
 public/__init__.py | 25 ++++++++++++++++++++++++-
 setup.py           |  3 +++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/public/__init__.py b/public/__init__.py
index c7603274c2..1b30218204 100644
--- a/public/__init__.py
+++ b/public/__init__.py
@@ -1,8 +1,31 @@
-"""AUTO-GENERATED. DO NOT MODIFY"""
+"""Frontend for Home Assistant."""
 import os
+from user_agents import parse
+
+FAMILY_MIN_VERSION = {
+    'Chrome': 54,          # Object.values
+    'Chrome Mobile': 54,
+    'Firefox': 47,         # Object.values
+    'Firefox Mobile': 47,
+    'Opera': 41,           # Object.values
+    'Edge': 14,            # Array.prototype.includes added in 14
+    'Safari': 10,          # Many features not supported by 9
+}
 
 
 def where():
     """Return path to the frontend."""
     return os.path.dirname(__file__)
 
+
+def version(useragent):
+    """Get the version for given user agent."""
+    useragent = parse(useragent)
+
+    # on iOS every browser is a Safari which we support from version 11.
+    if useragent.os.family == 'iOS':
+        # Was >= 10, temp setting it to 12 to work around issue #11387
+        return useragent.os.version[0] >= 12
+
+    version = FAMILY_MIN_VERSION.get(useragent.browser.family)
+    return version and useragent.browser.version[0] >= version
diff --git a/setup.py b/setup.py
index f2080e190a..8625208770 100644
--- a/setup.py
+++ b/setup.py
@@ -13,5 +13,8 @@ setup(name='home-assistant-frontend',
           'hass_frontend.*',
           'hass_frontend_es5.*'
       ]),
+      install_requires=[
+          'user-agents==1.1.0',
+      ],
       include_package_data=True,
       zip_safe=False)