Fix ha_key crash if not using addon (#1369)

* Fix ha_key crash if not using addon

* [pre-commit.ci lite] apply automatic fixes

---------

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>

apps/predbat/ha.py

@@ -38,6 +38,8 @@ def __init__(self, base):
         self.base = base
         self.log = base.log
         self.state_data = {}
+        self.slug = None
+
         if not self.ha_key:
             self.log("Warn: ha_key or SUPERVISOR_TOKEN not found, you can set ha_url/ha_key in apps.yaml. Will use direct HA API")
         else:
@@ -47,10 +49,24 @@ def __init__(self, base):
                 self.ha_key = None
             else:
                 self.log("Info: Connected to Home Assistant at {}".format(self.ha_url))
+
+                res = self.api_call("/addons/self/info")
+                if res:
+                    # get add-on slug name which is the actual directory name under /addon_configs that /config is mounted to
+                    self.config_root_p = "/addon_configs/" + res["data"]["slug"]
+                    self.slug = res["data"]["slug"]
+                    self.log("Info: Add-on slug is {}".format(self.slug))
+
                 self.base.create_task(self.socketLoop())
                 self.websocket_active = True
                 self.log("Info: Web Socket task started")
 
+    def get_slug(self):
+        """
+        Get the add-on slug.
+        """
+        return self.slug
+
     async def socketLoop(self):
         """
         Web socket loop for HA interface

apps/predbat/predbat.py

@@ -32,7 +32,7 @@
 import asyncio
 import json
 
-THIS_VERSION = "v8.3.3"
+THIS_VERSION = "v8.3.4"
 PREDBAT_FILES = ["predbat.py", "config.py", "prediction.py", "utils.py", "inverter.py", "ha.py", "download.py", "unit_test.py"]
 from download import predbat_update_move, predbat_update_download, check_install
 
@@ -10855,15 +10855,13 @@ def initialize(self):
         try:
             self.reset()
             self.ha_interface = HAInterface(self)
-            self.config_root_p = self.config_root
-
-            # Get add-on info by making API call to HA supervisor
-            res = self.ha_interface.api_call("/addons/self/info")
 
-            if res:
-                # get add-on slug name which is the actual directory name under /addon_configs that /config is mounted to
+            # Printable config root
+            self.config_root_p = self.config_root
+            slug = self.ha_interface.get_slug()
+            if slug:
                 # and use slug name to determine printable config_root pathname when writing debug info to the log file
-                self.config_root_p = "/addon_configs/" + res["data"]["slug"]
+                self.config_root_p = "/addon_configs/" + slug
 
             self.log("Config root is {} and printable config_root_p is now {}".format(self.config_root, self.config_root_p))