Increase poll interval & send snapshots even when printer is idle

poller-pi.py

@@ -59,7 +59,7 @@ async def send_printer_status():
             printer_jsons_str: str = json.dumps({'printers': printer_jsons, 'key': x_api_key})
             logging.info(f'Sending {printer_jsons_str}')
             await websocket.send(printer_jsons_str)
-            await asyncio.sleep(5)
+            await asyncio.sleep(3)
 
 
 try:

test/test_ultimaker.py

@@ -110,13 +110,19 @@ class UltimakerJsonTest(unittest.TestCase):
     def test_expected_json_is_produced_when_idle(self):
         printer = default_printer_mock()
         printer.credentials = Mock(return_value=mock_credentials)
+        printer.get_camera_snapshot_uri = Mock(
+            return_value=mock_camera_snapshot_uri
+        )
         json = printer.into_ultimaker_json()
         self.assertDictEqual({
             'system': {
                 'name': mock_name
             },
             'printer': {
                 'status': 'idle'
+            },
+            'camera': {
+                'snapshot': mock_camera_snapshot_uri
             }
         }, json)
 

ultimaker.py

@@ -131,6 +131,9 @@ def into_ultimaker_json(self) -> Dict[str, str]:
                 'printer': {
                     'status': status,
                 },
+                'camera': {
+                    'snapshot': self.get_camera_snapshot_uri()
+                }
             }
             if status == 'printing':
                 ultimaker_json['print_job'] = {