Change notify target property to be a dictionary (#3501)

* Change notify target property to be a dictionary

* Make demo target properties unique and fix test to match behavior

homeassistant/components/notify/__init__.py

@@ -112,8 +112,8 @@ def setup(hass, config):
 
         if hasattr(notify_service, 'targets'):
             platform_name = (p_config.get(CONF_NAME) or platform)
-            for target in notify_service.targets:
-                target_name = slugify("{}_{}".format(platform_name, target))
+            for name, target in notify_service.targets.items():
+                target_name = slugify("{}_{}".format(platform_name, name))
                 targets[target_name] = target
                 hass.services.register(DOMAIN, target_name,
                                        service_call_handler,

homeassistant/components/notify/demo.py

@@ -25,7 +25,7 @@ class DemoNotificationService(BaseNotificationService):
     @property
     def targets(self):
         """Return a dictionary of registered targets."""
-        return ["test target"]
+        return {"test target name": "test target id"}
 
     def send_message(self, message="", **kwargs):
         """Send a message to a user."""

homeassistant/components/notify/html5.py

@@ -314,7 +314,10 @@ class HTML5NotificationService(BaseNotificationService):
     @property
     def targets(self):
         """Return a dictionary of registered targets."""
-        return self.registrations.keys()
+        targets = {}
+        for registration in self.registrations:
+            targets[registration] = registration
+        return targets
 
     # pylint: disable=too-many-locals
     def send_message(self, message="", **kwargs):