Add bad code attempt event to manual alarm control panel (#146315)

Co-authored-by: Erik Montnemery <erik@montnemery.com>

homeassistant/components/manual/alarm_control_panel.py

@@ -408,6 +408,20 @@ class ManualAlarm(AlarmControlPanelEntity, RestoreEntity):
         if not alarm_code or code == alarm_code:
             return
 
+        current_context = (
+            self._context if hasattr(self, "_context") and self._context else None
+        )
+        user_id_from_context = current_context.user_id if current_context else None
+
+        self.hass.bus.async_fire(
+            "manual_alarm_bad_code_attempt",
+            {
+                "entity_id": self.entity_id,
+                "user_id": user_id_from_context,
+                "target_state": state,
+            },
+        )
+
         raise ServiceValidationError(
             "Invalid alarm code provided",
             translation_domain=DOMAIN,

tests/components/manual/test_alarm_control_panel.py

@@ -6,8 +6,10 @@ from unittest.mock import MagicMock, patch
 from freezegun import freeze_time
 import pytest
 
+from homeassistant.auth.models import User
 from homeassistant.components import alarm_control_panel
 from homeassistant.components.alarm_control_panel import (
+    DOMAIN as ALARM_DOMAIN,
     AlarmControlPanelEntityFeature,
     AlarmControlPanelState,
 )
@@ -25,7 +27,7 @@ from homeassistant.const import (
     SERVICE_ALARM_ARM_NIGHT,
     SERVICE_ALARM_ARM_VACATION,
 )
-from homeassistant.core import CoreState, HomeAssistant, State
+from homeassistant.core import Context, CoreState, HomeAssistant, State, callback
 from homeassistant.exceptions import ServiceValidationError
 from homeassistant.setup import async_setup_component
 from homeassistant.util import dt as dt_util
@@ -1123,6 +1125,80 @@ async def test_disarm_during_trigger_with_invalid_code(hass: HomeAssistant) -> N
     assert state.state == AlarmControlPanelState.TRIGGERED
 
 
+async def test_bad_code_attempt_event_fired(hass: HomeAssistant) -> None:
+    """Test that manual_alarm_bad_code_attempt event is fired on bad code."""
+
+    entity_id = "alarm_control_panel.test_alarm"
+    config = {
+        ALARM_DOMAIN: {
+            "platform": "manual",
+            "name": "Test Alarm",
+            "code": "1234",
+            "delay_time": 0,
+            "arming_time": 0,
+            "trigger_time": 0,
+        }
+    }
+    assert await async_setup_component(hass, ALARM_DOMAIN, config)
+    await hass.async_block_till_done()
+
+    alarm_entity = hass.states.get(entity_id)
+    assert alarm_entity is not None
+
+    await hass.services.async_call(
+        ALARM_DOMAIN,
+        "alarm_arm_away",
+        {"entity_id": entity_id, "code": "1234"},
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+    assert hass.states.get(entity_id).state == AlarmControlPanelState.ARMED_AWAY
+
+    bad_code = "0000"
+
+    mock_user_id = "test_user_id_123"
+    test_context = Context(user_id=mock_user_id)
+
+    events = []
+
+    @callback
+    def event_listener(event):
+        events.append(event.data)
+
+    hass.bus.async_listen("manual_alarm_bad_code_attempt", event_listener)
+
+    await hass.services.async_call(
+        ALARM_DOMAIN,
+        "alarm_disarm",
+        {"entity_id": entity_id, "code": "1234"},
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+
+    assert len(events) == 0
+
+    with patch("homeassistant.auth.AuthManager.async_get_user") as mock_get_user:
+        mock_user = MagicMock(spec=User)
+        mock_user.id = mock_user_id
+        mock_get_user.return_value = mock_user
+
+        with pytest.raises(ServiceValidationError):
+            await hass.services.async_call(
+                ALARM_DOMAIN,
+                "alarm_disarm",
+                {"entity_id": entity_id, "code": bad_code},
+                blocking=True,
+                context=test_context,
+            )
+
+    await hass.async_block_till_done()
+
+    assert len(events) == 1
+    assert events[0].get("entity_id") == entity_id
+    assert events[0].get("target_state") == AlarmControlPanelState.DISARMED
+    assert events[0].get("user_id") == mock_user_id
+
+
 async def test_disarm_with_template_code(hass: HomeAssistant) -> None:
     """Attempt to disarm with a valid or invalid template-based code."""
     assert await async_setup_component(