Enhance notification message rendering by adding entity state resolution and regex pattern matching

apps/notificationsmanager.py

@@ -1,10 +1,13 @@
 import appdaemon.plugins.hass.hassapi as hass
 import appdaemon.exceptions as ad_exception
 import ad_toolbox.smartcondition as SmartCondition
+import re
 import uuid
 from expressionparser import ParsingException
 
 class Notification:
+    ENTITY_PLACEHOLDER_PATTERN = re.compile(r"\{([^{}]+)\}")
+
     def __init__(self,ad_api,config,name):
         self.recipients = dict()
         self.config = config
@@ -50,14 +53,40 @@ class Notification:
             for service in recipient_yaml['services']:
                 clear_notification(service,tag)
 
+    def render_message_content(self, content):
+        if not isinstance(content, str):
+            return content
+
+        def replace_entity_state(match):
+            entity_id = match.group(1).strip()
+            if entity_id == "":
+                return match.group(0)
+
+            try:
+                state = self.ad_api.get_state(entity_id)
+            except Exception as e:
+                self.log_error(f"Failed to resolve '{entity_id}' in notification content: {e}")
+                return match.group(0)
+
+            if state is None:
+                self.log_error(f"Unable to resolve '{entity_id}' in notification content")
+                return match.group(0)
+
+            return str(state)
+
+        return self.ENTITY_PLACEHOLDER_PATTERN.sub(replace_entity_state, content)
+
     def send_notification(self,recipient):
-        try: title  = self.config['message']['title']
-        except KeyError: title = ""
-        try: message  = self.config['message']['content']
-        except KeyError: message = ""
+        try: title_template  = self.config['message']['title']
+        except KeyError: title_template = ""
+        try: message_content  = self.config['message']['content']
+        except KeyError: message_content = ""
         try: data  = self.config['message']['data']
         except KeyError: data = dict()
 
+        title = self.render_message_content(title_template)
+        message = self.render_message_content(message_content)
+
         #TODO : maybe it's better to not send tag when it's not needed
         if not 'tag' in data: 
             data['tag'] = self.uuid