From ca030b06e0de3179ba0b80fb1890d541fa3fff94 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <blacklight86@gmail.com>
Date: Wed, 17 Jul 2019 14:55:53 +0200
Subject: [PATCH] Added support (not working yet) for custom Google device
 actions and events

---
 platypush/message/event/google/__init__.py    | 22 ++++++++++++++++
 .../plugins/assistant/google/pushtotalk.py    | 25 +++++++++++--------
 2 files changed, 37 insertions(+), 10 deletions(-)

diff --git a/platypush/message/event/google/__init__.py b/platypush/message/event/google/__init__.py
index e69de29b..061d34cd 100644
--- a/platypush/message/event/google/__init__.py
+++ b/platypush/message/event/google/__init__.py
@@ -0,0 +1,22 @@
+from platypush.message.event import Event
+
+class GoogleDeviceEvent(Event):
+    """
+    Base class for Google device events, see `managing traits and handlers <https://developers.google.com/assistant/sdk/guides/service/python/extend/add-trait-and-handler>`_.
+    """
+
+    def __init__(self, device_id, device_model_id=None, *args, **kwargs):
+        super().__init__(*args, device_id=device_id, device_model_id=device_model_id, **kwargs)
+
+
+class GoogleDeviceOnOffEvent(GoogleDeviceEvent):
+    """
+    Event triggered when a device receives an on/off command
+    """
+
+    def __init__(self, on, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.on = on
+
+
+# vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/assistant/google/pushtotalk.py b/platypush/plugins/assistant/google/pushtotalk.py
index e24b7995..bfce9778 100644
--- a/platypush/plugins/assistant/google/pushtotalk.py
+++ b/platypush/plugins/assistant/google/pushtotalk.py
@@ -13,6 +13,8 @@ from platypush.message.event.assistant import ConversationStartEvent, \
     ConversationEndEvent, SpeechRecognizedEvent, VolumeChangedEvent, \
     ResponseEvent
 
+from platypush.message.event.google import GoogleDeviceOnOffEvent
+
 from platypush.plugins import action
 from platypush.plugins.assistant import AssistantPlugin
 from platypush.plugins.assistant.google.lib import SampleAssistant
@@ -44,6 +46,7 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
     audio_block_size = audio_helpers.DEFAULT_AUDIO_DEVICE_BLOCK_SIZE
     audio_flush_size = audio_helpers.DEFAULT_AUDIO_DEVICE_FLUSH_SIZE
     grpc_deadline = 60 * 3 + 5
+    device_handler = None
 
     def __init__(self,
                  credentials_file=os.path.join(
@@ -100,7 +103,6 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
 
         self.grpc_channel = None
         self.conversation_stream = None
-        self.device_handler = None
 
     def _init_assistant(self):
         from google.auth.transport.grpc import secure_authorized_channel
@@ -138,7 +140,7 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
             sample_width=self.audio_sample_width,
         )
 
-        self.device_handler = device_helpers.DeviceRequestHandler(self.device_id)
+        self._install_device_handlers()
 
     @staticmethod
     def on_conversation_start():
@@ -184,13 +186,6 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
 
         return handler
 
-    def on_device_action(self):
-        """ Device action handler """
-        def handler(request):
-            self.logger.info('Received request: {}'.format(request))
-
-        return handler
-
     @action
     def start_conversation(self, *args, language=None, **kwargs):
         """
@@ -230,7 +225,7 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
                              display=None,
                              channel=self.grpc_channel,
                              deadline_sec=self.grpc_deadline,
-                             device_handler=self.on_device_action(),
+                             device_handler=self.device_handler,
                              on_conversation_start=self.on_conversation_start(),
                              on_conversation_end=self.on_conversation_end(),
                              on_volume_changed=self.on_volume_changed(),
@@ -260,5 +255,15 @@ class AssistantGooglePushtotalkPlugin(AssistantPlugin):
 
             get_bus().post(ConversationEndEvent())
 
+    def _install_device_handlers(self):
+        self.device_handler = device_helpers.DeviceRequestHandler(self.device_id)
+
+        @self.device_handler.command('action.devices.commands.OnOff')
+        def handler(on):
+            get_bus().post(GoogleDeviceOnOffEvent(
+                device_id=self.device_id,
+                device_model_id=self.device_model_id,
+                on=on))
+
 
 # vim:sw=4:ts=4:et: