Implement notification channel template reuse and advanced configuration variables.

notify_templates/notify_HA.sh

@@ -1,5 +1,5 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-NOTIFY_HA_VERSION="v0.1"
+NOTIFY_HA_VERSION="v0.2"
 #
 # This is an integration that makes it possible to send notifications via Home Assistant (https://www.home-assistant.io/integrations/notify/)
 # You need to generate a long-lived access token in Home Sssistant to be used here (https://developers.home-assistant.io/docs/auth_api/#long-lived-access-token)
@@ -7,15 +7,28 @@ NOTIFY_HA_VERSION="v0.1"
 # If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
 # Do not modify this file directly within the "notify_templates" subdirectory. Set HA_ENTITY, HA_URL and HA_TOKEN in your dockcheck.config file.
 
-if [[ -z "${HA_ENTITY:-}" ]] || [[ -z "${HA_URL:-}" ]] || [[ -z "${HA_TOKEN:-}" ]]; then
-  printf "Home Assistant notification channel enabled, but required configuration variables are missing. Home assistant notifications will not be sent.\n"
-
-  remove_channel HA
-fi
-
 trigger_HA_notification() {
-  AccessToken="${HA_TOKEN}"
-  Url="${HA_URL}/api/services/notify/${HA_ENTITY}"
+  if [[ -n "$1" ]]; then
+    HA_channel="$1"
+    UpperChannel=$(tr '[:lower:]' '[:upper:]' <<< "$HA_channel")
+  else
+    HA_channel="HA"
+    UpperChannel="HA"
+  fi
+
+  HAEntityVar="${UpperChannel}_ENTITY"
+  HAUrlVar="${UpperChannel}_URL"
+  HATokenVar="${UpperChannel}_TOKEN"
+
+  if [[ -z "${!HAEntityVar:-}" ]] || [[ -z "${!HAUrlVar:-}" ]] || [[ -z "${!HATokenVar:-}" ]]; then
+    printf "The ${HA_channel} notification channel is enabled, but required configuration variables are missing. Home assistant notifications will not be sent.\n"
+
+    remove_channel HA
+    return 1
+  fi
+
+  AccessToken="${!HATokenVar}"
+  Url="${!HAUrlVar}/api/services/notify/${!HAEntityVar}"
   JsonData=$( "$jqbin" -n \
               --arg body "$MessageBody" \
               '{"title": "dockcheck update", "message": $body}' )