Skip TTS events entirely with empty text (#105617)

homeassistant/components/assist_pipeline/pipeline.py

@@ -369,6 +369,7 @@ class PipelineStage(StrEnum):
     STT = "stt"
     INTENT = "intent"
     TTS = "tts"
+    END = "end"
 
 
 PIPELINE_STAGE_ORDER = [
@@ -1024,7 +1025,6 @@ class PipelineRun:
             )
         )
 
-        if tts_input := tts_input.strip():
         try:
             # Synthesize audio and get URL
             tts_media_id = tts_generate_media_source_id(
@@ -1051,8 +1051,6 @@ class PipelineRun:
             "media_id": tts_media_id,
             **asdict(tts_media),
         }
-        else:
-            tts_output = {}
 
         self.process_event(
             PipelineEvent(PipelineEventType.TTS_END, {"tts_output": tts_output})
@@ -1345,7 +1343,11 @@ class PipelineInput:
                         self.conversation_id,
                         self.device_id,
                     )
+                    if tts_input.strip():
                         current_stage = PipelineStage.TTS
+                    else:
+                        # Skip TTS
+                        current_stage = PipelineStage.END
 
                 if self.run.end_stage != PipelineStage.INTENT:
                     # text-to-speech

tests/components/assist_pipeline/snapshots/test_websocket.ambr

@@ -662,15 +662,33 @@
 # ---
 # name: test_pipeline_empty_tts_output.1
   dict({
-    'engine': 'test',
-    'language': 'en-US',
-    'tts_input': '',
-    'voice': 'james_earl_jones',
+    'conversation_id': None,
+    'device_id': None,
+    'engine': 'homeassistant',
+    'intent_input': 'never mind',
+    'language': 'en',
   })
 # ---
 # name: test_pipeline_empty_tts_output.2
   dict({
-    'tts_output': dict({
+    'intent_output': dict({
+      'conversation_id': None,
+      'response': dict({
+        'card': dict({
+        }),
+        'data': dict({
+          'failed': list([
+          ]),
+          'success': list([
+          ]),
+          'targets': list([
+          ]),
+        }),
+        'language': 'en',
+        'response_type': 'action_done',
+        'speech': dict({
+        }),
+      }),
     }),
   })
 # ---

tests/components/assist_pipeline/test_websocket.py

@@ -2467,10 +2467,10 @@ async def test_pipeline_empty_tts_output(
     await client.send_json_auto_id(
         {
             "type": "assist_pipeline/run",
-            "start_stage": "tts",
+            "start_stage": "intent",
             "end_stage": "tts",
             "input": {
-                "text": "",
+                "text": "never mind",
             },
         }
     )
@@ -2486,16 +2486,15 @@ async def test_pipeline_empty_tts_output(
     assert msg["event"]["data"] == snapshot
     events.append(msg["event"])
 
-    # text-to-speech
+    # intent
     msg = await client.receive_json()
-    assert msg["event"]["type"] == "tts-start"
+    assert msg["event"]["type"] == "intent-start"
     assert msg["event"]["data"] == snapshot
     events.append(msg["event"])
 
     msg = await client.receive_json()
-    assert msg["event"]["type"] == "tts-end"
+    assert msg["event"]["type"] == "intent-end"
     assert msg["event"]["data"] == snapshot
-    assert not msg["event"]["data"]["tts_output"]
     events.append(msg["event"])
 
     # run end