Add voice analytics filters and metrics

backend/tests/test_voice_sessions.py

@@ -342,6 +342,7 @@ async def test_voice_session_low_confidence_turn_requests_confirmation(
                     files={
                         "audio_file": ("turn.webm", b"fake-webm-audio", "audio/webm"),
                     },
+                    data={"duration_ms": "1200"},
                 )
                 assert response.status_code == 202
                 turn_id = response.json()["turn_id"]
@@ -431,6 +432,7 @@ async def test_voice_session_confirmation_accept_continues_original_turn(
                     files={
                         "audio_file": ("turn.webm", b"fake-webm-audio", "audio/webm"),
                     },
+                    data={"duration_ms": "1200"},
                 )
                 turn_id = response.json()["turn_id"]
 
@@ -503,6 +505,7 @@ async def test_voice_session_confirmation_switch_to_text_allows_follow_up_turn(
                     files={
                         "audio_file": ("turn.webm", b"fake-webm-audio", "audio/webm"),
                     },
+                    data={"duration_ms": "1200"},
                 )
                 turn_id = response.json()["turn_id"]
 
@@ -647,6 +650,7 @@ async def test_voice_session_analytics_summarize_failures_and_confirmations(
                     files={
                         "audio_file": ("turn.webm", b"fake-webm-audio", "audio/webm"),
                     },
+                    data={"duration_ms": "1200"},
                 )
                 turn_id = response.json()["turn_id"]
                 await client.post(
@@ -677,6 +681,46 @@ async def test_voice_session_analytics_summarize_failures_and_confirmations(
                 assert analytics["asr_failures"] >= 1
                 assert analytics["finalized_sessions"] >= 1
                 assert analytics["finalize_conversion_rate"] > 0
+                assert analytics["text_fallback_turns"] >= 1
+                assert analytics["uploaded_audio_turns"] >= 1
+                assert analytics["user_audio_turn_rate"] > 0
+                assert analytics["assistant_audio_ready_turns"] >= 1
+                assert analytics["assistant_audio_ready_rate"] > 0
+                assert analytics["asr_success_rate"] > 0
+                assert analytics["tts_success_rate"] > 0
+                assert analytics["avg_transcript_confidence"] > 0
+                assert analytics["avg_intent_confidence"] > 0
+                assert analytics["failure_event_counts"]["turn_transcription_failed"] >= 1
+                assert analytics["failure_event_counts"]["assistant_audio_failed"] >= 1
+                assert analytics["total_user_audio_duration_ms"] >= 1200
+                assert analytics["avg_user_audio_duration_ms"] >= 1200
+                assert analytics["transcription_provider_counts"]["openai"] >= 1
+                assert analytics["transcription_provider_counts"]["fallback"] >= 1
+                assert analytics["confirmation_request_rate"] > 0
+
+                response = await client.get(
+                    "/api/voice-sessions/analytics?days=30&provider=openai"
+                )
+                assert response.status_code == 200
+                provider_analytics = response.json()
+                assert provider_analytics["provider"] == "openai"
+                assert provider_analytics["uploaded_audio_turns"] >= 1
+                assert provider_analytics["text_fallback_turns"] == 0
+                assert set(provider_analytics["transcription_provider_counts"]) == {"openai"}
+
+                response = await client.get(
+                    "/api/voice-sessions/analytics?days=30&session_status=completed"
+                )
+                assert response.status_code == 200
+                status_analytics = response.json()
+                assert status_analytics["session_status"] == "completed"
+                assert status_analytics["total_sessions"] >= 1
+                assert status_analytics["finalized_sessions"] >= 1
+
+                response = await client.get(
+                    "/api/voice-sessions/analytics?days=30&session_status=unknown"
+                )
+                assert response.status_code == 422
         finally:
             app.dependency_overrides.clear()