homeassistant: rework update check

bundles/homeassistant/files/check_homeassistant_update

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+from sys import exit
+
+import requests
+from packaging import version
+
+bearer = "${bearer}"
+domain = "${domain}"
+OK = 0
+WARN = 1
+CRITICAL = 2
+UNKNOWN = 3
+
+status = 3
+message = "Unknown Update Status"
+
+
+domain = "hass.home.kunbox.net"
+
+s = requests.Session()
+s.headers.update({"Content-Type": "application/json"})
+
+try:
+    stable_version = version.parse(
+        s.get("https://version.home-assistant.io/stable.json").json()["homeassistant"][
+            "generic-x86-64"
+        ]
+    )
+    s.headers.update(
+        {"Authorization": f"Bearer {bearer}", "Content-Type": "application/json"}
+    )
+    running_version = version.parse(
+        s.get(f"https://{domain}/api/config").json()["version"]
+    )
+    if running_version == stable_version:
+        status = 0
+        message = f"OK - running version {running_version} equals stable version {stable_version}"
+    elif running_version > stable_version:
+        status = 1
+        message = f"WARNING - stable version {stable_version} is lower than running version {running_version}, check if downgrade is necessary."
+    else:
+        status = 2
+        message = f"CRITICAL - update necessary, running verison {running_version} is lower than stable version {stable_version}"
+except Exception as e:
+    message = f"{message}: {repr(e)}"
+
+print(message)
+exit(status)