✨ Adds support for Home Assistant integration discovery (#15)

* ✨ Adds support for Home Assistant integration discovery

* 👕 Addresses linting warnings

adguard/config.json

@@ -6,7 +6,7 @@
   "url": "https://github.com/hassio-addons/addon-adguard-home",
   "webui": "[PROTO:ssl]://[HOST]:[PORT:80]",
   "ingress": true,
-  "ingress_port": 0,
+  "ingress_port": 45159,
   "panel_icon": "mdi:shield-check",
   "startup": "services",
   "homeassistant": "0.92.0b2",
@@ -25,6 +25,9 @@
     "53/udp": "DNS server port",
     "80/tcp": "Web interface (Not required for Hass.io Ingress)"
   },
+  "discovery": [
+    "adguard"
+  ],
   "boot": "auto",
   "hassio_api": true,
   "hassio_role": "default",

adguard/rootfs/etc/cont-init.d/discovery.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: AdGuard Home
+# Sends discovery information to Home Assistant.
+# ==============================================================================
+declare config
+declare payload
+
+config=$(\
+    bashio::var.json \
+        host "$(bashio::addon.ip_address)" \
+        port "^$(bashio::addon.ingress_port)" \
+)
+
+payload=$(\
+    bashio::var.json \
+        service adguard \
+        config "^${config}" \
+)
+
+if bashio::api.hassio "POST" "/discovery" "${payload}"; then
+    bashio::log.info "Successfully send discovery information to Home Assistant."
+else
+    bashio::log.error "Discovery message to Home Assistant failed!"
+fi

adguard/rootfs/etc/cont-init.d/nginx.sh

@@ -6,7 +6,6 @@
 declare admin_port
 declare certfile
 declare ingress_interface
-declare ingress_port
 declare keyfile
 
 admin_port=$(bashio::addon.port 80)
@@ -28,7 +27,5 @@ if bashio::var.has_value "${admin_port}"; then
     sed -i "s/%%port%%/${admin_port}/g" /etc/nginx/servers/direct.conf
 fi
 
-ingress_port=$(bashio::addon.ingress_port)
 ingress_interface=$(bashio::addon.ip_address)
-sed -i "s/%%port%%/${ingress_port}/g" /etc/nginx/servers/ingress.conf
 sed -i "s/%%interface%%/${ingress_interface}/g" /etc/nginx/servers/ingress.conf

adguard/rootfs/etc/nginx/servers/ingress.conf

@@ -1,10 +1,11 @@
 server {
-    listen %%interface%%:%%port%% default_server;
+    listen %%interface%%:45159 default_server;
 
     include /etc/nginx/includes/server_params.conf;
     include /etc/nginx/includes/proxy_params.conf;
 
     location / {
+        allow   172.30.32.1;
         allow   172.30.32.2;
         deny    all;