Migrate google assistant to new audio (#1160)

* Migrate google assistant to new audio

* Fix lint

* clean old handling stuff

google_assistant/rootfs/usr/bin/hassio_gassistant.py

@@ -0,0 +1,70 @@
+"""Home Assistant Google Assistant."""
+import json
+import sys
+from pathlib import Path
+
+import google.oauth2.credentials
+
+from google.assistant.library import Assistant
+from google.assistant.library.event import EventType
+from google.assistant.library.device_helpers import register_device
+
+DEVICE_CONFIG = "/data/device.json"
+
+
+def process_event(event):
+    if event.type == EventType.ON_CONVERSATION_TURN_STARTED:
+        print()
+
+    try:
+        print(event)
+    except UnicodeEncodeError as err:
+        print("Can't print event: {}".format(err))
+
+    if (event.type == EventType.ON_CONVERSATION_TURN_FINISHED and event.args and not event.args['with_follow_on_turn']):
+        print()
+
+
+if __name__ == '__main__':
+    cred_json = Path(sys.argv[1])
+    device_json = Path(DEVICE_CONFIG)
+
+    # open credentials
+    print("OAth with Google")
+    with cred_json.open('r') as data:
+        credentials = google.oauth2.credentials.Credentials(token=None, **json.load(data))
+
+    # Read device info
+    print("Initialize device infos")
+    if device_json.exists():
+        with device_json.open('r') as data:
+            device_info = json.load(data)
+
+        device_model_id = device_info['model_id']
+        last_device_id = device_info.get('last_device_id', None)
+    else:
+        device_model_id = sys.argv[3]
+        last_device_id = None
+
+    # run assistant
+    print("Run Google Assistant SDK")
+    with Assistant(credentials, device_model_id) as assistant:
+        events = assistant.start()
+        device_id = assistant.device_id
+
+        print("device_model_id: {}".format(device_model_id))
+        print("device_id: {}".format(device_id))
+
+        # Register device
+        if last_device_id != device_id:
+            register_device(sys.argv[2], credentials, device_model_id, device_id)
+            with device_json.open('w') as dev_file:
+                json.dump({
+                    'last_device_id': device_id,
+                    'model_id': device_model_id,
+                }, dev_file)
+
+        for event in events:
+            process_event(event)
+
+    print("Close Google Assistant SDK")