r/homeassistant: Proxy for Zigbee2MQTT frontend

Zigbee2MQTT now has a web GUI, which makes it *way* easier to manage the
Zigbee network.  Now that I've got all the Philips Hue bulbs controlled
by Zigbee2MQTT instead of the Hue Hub, having access to the GUI is
awesome.

roles/homeassistant/defaults/main.yml

@@ -4,3 +4,4 @@ homeassistant_ssl_certificate: >-
 homeassistant_ssl_certificate_key: >-
   {{ apache_ssl_certificate_key }}
 homeassistant_proxy_zwavejs2mqtt: true
+homeassistant_proxy_zigbee2mqtt: true

roles/homeassistant/templates/homeassistant.httpd.conf.j2

@@ -26,6 +26,17 @@ RewriteRule /.* https://%{SERVER_NAME}$0 [R=301,L]
     </Location>
     ProxyPassReverse /zwave/ http://localhost:8091/
 {% endif %}
+{% if homeassistant_proxy_zigbee2mqtt %}
+
+    RewriteRule ^/zigbee$ /zigbee/ [R=301,L]
+    RewriteCond %{HTTP:Upgrade} =websocket [NC]
+    RewriteRule /zigbee/(.*) ws://localhost:8080/$1 [P,L]
+    RewriteRule /zigbee/(.*) http://localhost:8080/$1 [P,L]
+    <Location /zigbee>
+        RequestHeader set X-External-Path /zigbee
+    </Location>
+    ProxyPassReverse /zigbee/ http://localhost:8080/
+{% endif %}
 
     RewriteCond %{HTTP:Upgrade} =websocket [NC]
     RewriteRule /(.*)  ws://localhost:8123/$1 [P,L]