Add useragent-based detection of JS version (#10776)

* Add useragent-based detection of JS version

* Keep es5 as default meanwhile

* Update test

homeassistant/components/frontend/__init__.py

@@ -23,7 +23,7 @@ from homeassistant.const import CONF_NAME, EVENT_THEMES_UPDATED
 from homeassistant.core import callback
 from homeassistant.loader import bind_hass
 
-REQUIREMENTS = ['home-assistant-frontend==20171127.0']
+REQUIREMENTS = ['home-assistant-frontend==20171127.0', 'user-agents==1.1.0']
 
 DOMAIN = 'frontend'
 DEPENDENCIES = ['api', 'websocket_api', 'http', 'system_log']
@@ -32,6 +32,7 @@ URL_PANEL_COMPONENT_FP = '/frontend/panels/{}-{}.html'
 
 CONF_THEMES = 'themes'
 CONF_EXTRA_HTML_URL = 'extra_html_url'
+CONF_EXTRA_HTML_URL_ES5 = 'extra_html_url_es5'
 CONF_FRONTEND_REPO = 'development_repo'
 CONF_JS_VERSION = 'javascript_version'
 JS_DEFAULT_OPTION = 'es5'
@@ -63,6 +64,7 @@ DATA_FINALIZE_PANEL = 'frontend_finalize_panel'
 DATA_PANELS = 'frontend_panels'
 DATA_JS_VERSION = 'frontend_js_version'
 DATA_EXTRA_HTML_URL = 'frontend_extra_html_url'
+DATA_EXTRA_HTML_URL_ES5 = 'frontend_extra_html_url_es5'
 DATA_THEMES = 'frontend_themes'
 DATA_DEFAULT_THEME = 'frontend_default_theme'
 DEFAULT_THEME = 'default'
@@ -79,6 +81,8 @@ CONFIG_SCHEMA = vol.Schema({
         }),
         vol.Optional(CONF_EXTRA_HTML_URL):
             vol.All(cv.ensure_list, [cv.string]),
+        vol.Optional(CONF_EXTRA_HTML_URL_ES5):
+            vol.All(cv.ensure_list, [cv.string]),
         vol.Optional(CONF_JS_VERSION, default=JS_DEFAULT_OPTION):
             vol.In(JS_OPTIONS)
     }),
@@ -269,11 +273,12 @@ def async_register_panel(hass, component_name, path, md5=None,
 
 @bind_hass
 @callback
-def add_extra_html_url(hass, url):
+def add_extra_html_url(hass, url, es5=False):
     """Register extra html url to load."""
-    url_set = hass.data.get(DATA_EXTRA_HTML_URL)
+    key = DATA_EXTRA_HTML_URL_ES5 if es5 else DATA_EXTRA_HTML_URL
+    url_set = hass.data.get(key)
     if url_set is None:
-        url_set = hass.data[DATA_EXTRA_HTML_URL] = set()
+        url_set = hass.data[key] = set()
     url_set.add(url)
 
 
@@ -358,9 +363,13 @@ def async_setup(hass, config):
 
     if DATA_EXTRA_HTML_URL not in hass.data:
         hass.data[DATA_EXTRA_HTML_URL] = set()
+    if DATA_EXTRA_HTML_URL_ES5 not in hass.data:
+        hass.data[DATA_EXTRA_HTML_URL_ES5] = set()
 
     for url in conf.get(CONF_EXTRA_HTML_URL, []):
-        add_extra_html_url(hass, url)
+        add_extra_html_url(hass, url, False)
+    for url in conf.get(CONF_EXTRA_HTML_URL_ES5, []):
+        add_extra_html_url(hass, url, True)
 
     yield from async_setup_themes(hass, conf.get(CONF_THEMES))
 
@@ -488,12 +497,14 @@ class IndexView(HomeAssistantView):
 
         template = yield from hass.async_add_job(self.get_template, latest)
 
+        extra_key = DATA_EXTRA_HTML_URL if latest else DATA_EXTRA_HTML_URL_ES5
+
         resp = template.render(
             no_auth=no_auth,
             panel_url=panel_url,
             panels=hass.data[DATA_PANELS],
             theme_color=MANIFEST_JSON['theme_color'],
-            extra_urls=hass.data[DATA_EXTRA_HTML_URL],
+            extra_urls=hass.data[extra_key],
         )
 
         return web.Response(text=resp, content_type='text/html')
@@ -545,10 +556,36 @@ def _is_latest(js_option, request):
     """
     if request is None:
         return js_option == 'latest'
-    latest_in_query = 'latest' in request.query or (
+
-        request.headers.get('Referer') and
+    # latest in query
-        'latest' in urlparse(request.headers['Referer']).query)
+    if 'latest' in request.query or (
-    es5_in_query = 'es5' in request.query or (
+            request.headers.get('Referer') and
-        request.headers.get('Referer') and
+            'latest' in urlparse(request.headers['Referer']).query):
-        'es5' in urlparse(request.headers['Referer']).query)
+        return True
-    return latest_in_query or (not es5_in_query and js_option == 'latest')
+
+    # es5 in query
+    if 'es5' in request.query or (
+            request.headers.get('Referer') and
+            'es5' in urlparse(request.headers['Referer']).query):
+        return False
+
+    # non-auto option in config
+    if js_option != 'auto':
+        return js_option == 'latest'
+
+    from user_agents import parse
+    useragent = parse(request.headers.get('User-Agent'))
+
+    # on iOS every browser is a Safari which we support from version 10.
+    if useragent.os.family == 'iOS':
+        return useragent.os.version[0] >= 10
+
+    family_min_version = {
+        'Chrome': 50,   # Probably can reduce this
+        'Firefox': 41,  # Destructuring added in 41
+        'Opera': 40,    # Probably can reduce this
+        'Edge': 14,     # Maybe can reduce this
+        'Safari': 10,   # many features not supported by 9
+    }
+    version = family_min_version.get(useragent.browser.family)
+    return version and useragent.browser.version[0] >= version

requirements_all.txt

@@ -1100,6 +1100,9 @@ uber_rides==0.6.0
 # homeassistant.components.sensor.ups
 upsmychoice==1.0.6
 
+# homeassistant.components.frontend
+user-agents==1.1.0
+
 # homeassistant.components.camera.uvc
 uvcclient==0.10.1
 

tests/components/test_frontend.py

@@ -7,7 +7,8 @@ import pytest
 
 from homeassistant.setup import async_setup_component
 from homeassistant.components.frontend import (
-    DOMAIN, CONF_THEMES, CONF_EXTRA_HTML_URL, DATA_PANELS)
+    DOMAIN, CONF_JS_VERSION, CONF_THEMES, CONF_EXTRA_HTML_URL,
+    CONF_EXTRA_HTML_URL_ES5, DATA_PANELS)
 
 
 @pytest.fixture
@@ -36,7 +37,10 @@ def mock_http_client_with_urls(hass, test_client):
     """Start the Hass HTTP component."""
     hass.loop.run_until_complete(async_setup_component(hass, 'frontend', {
         DOMAIN: {
-            CONF_EXTRA_HTML_URL: ["https://domain.com/my_extra_url.html"]
+            CONF_JS_VERSION: 'auto',
+            CONF_EXTRA_HTML_URL: ["https://domain.com/my_extra_url.html"],
+            CONF_EXTRA_HTML_URL_ES5:
+                ["https://domain.com/my_extra_url_es5.html"]
         }}))
     return hass.loop.run_until_complete(test_client(hass.http.app))
 
@@ -163,12 +167,21 @@ def test_missing_themes(mock_http_client):
 @asyncio.coroutine
 def test_extra_urls(mock_http_client_with_urls):
     """Test that extra urls are loaded."""
-    resp = yield from mock_http_client_with_urls.get('/states')
+    resp = yield from mock_http_client_with_urls.get('/states?latest')
     assert resp.status == 200
     text = yield from resp.text()
     assert text.find('href="https://domain.com/my_extra_url.html"') >= 0
 
 
+@asyncio.coroutine
+def test_extra_urls_es5(mock_http_client_with_urls):
+    """Test that es5 extra urls are loaded."""
+    resp = yield from mock_http_client_with_urls.get('/states?es5')
+    assert resp.status == 200
+    text = yield from resp.text()
+    assert text.find('href="https://domain.com/my_extra_url_es5.html"') >= 0
+
+
 @asyncio.coroutine
 def test_panel_without_path(hass):
     """Test panel registration without file path."""