From 0a272669ed22d01a50e66e87c1fb1412a3f84c01 Mon Sep 17 00:00:00 2001
From: Franck Nijhof <git@frenck.dev>
Date: Sat, 23 Oct 2021 18:15:12 +0200
Subject: [PATCH] Add CO Detector (cobj) device support to Tuya (#58292)

---
 homeassistant/components/tuya/binary_sensor.py | 15 +++++++++++++++
 homeassistant/components/tuya/const.py         |  9 ++++++---
 homeassistant/components/tuya/sensor.py        | 12 ++++++++++++
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/homeassistant/components/tuya/binary_sensor.py b/homeassistant/components/tuya/binary_sensor.py
index ad026d2cef0..202362da0d9 100644
--- a/homeassistant/components/tuya/binary_sensor.py
+++ b/homeassistant/components/tuya/binary_sensor.py
@@ -62,6 +62,21 @@ BINARY_SENSORS: dict[str, tuple[TuyaBinarySensorEntityDescription, ...]] = {
         ),
         TAMPER_BINARY_SENSOR,
     ),
+    # CO Detector
+    # https://developer.tuya.com/en/docs/iot/categorycobj?id=Kaiuz3u1j6q1v
+    "cobj": (
+        TuyaBinarySensorEntityDescription(
+            key=DPCode.CO_STATE,
+            device_class=DEVICE_CLASS_SAFETY,
+            on_value="1",
+        ),
+        TuyaBinarySensorEntityDescription(
+            key=DPCode.CO_STATUS,
+            device_class=DEVICE_CLASS_SAFETY,
+            on_value="alarm",
+        ),
+        TAMPER_BINARY_SENSOR,
+    ),
     # Human Presence Sensor
     # https://developer.tuya.com/en/docs/iot/categoryhps?id=Kaiuz42yhn1hs
     "hps": (
diff --git a/homeassistant/components/tuya/const.py b/homeassistant/components/tuya/const.py
index 276debe6b96..eb2f10429a0 100644
--- a/homeassistant/components/tuya/const.py
+++ b/homeassistant/components/tuya/const.py
@@ -150,10 +150,10 @@ class DPCode(str, Enum):
     CH2O_STATE = "ch2o_state"
     CH2O_VALUE = "ch2o_value"
     CHILD_LOCK = "child_lock"  # Child lock
+    CO_STATE = "co_state"
+    CO_STATUS = "co_status"
+    CO_VALUE = "co_value"
     CO2_STATE = "co2_state"
-    SMOKE_SENSOR_STATUS = "smoke_sensor_status"
-    SMOKE_SENSOR_STATE = "smoke_sensor_state"
-    SMOKE_SENSOR_VALUE = "smoke_sensor_value"
     CO2_VALUE = "co2_value"  # CO2 concentration
     COLOR_DATA_V2 = "color_data_v2"
     COLOUR_DATA = "colour_data"  # Colored light mode
@@ -211,6 +211,9 @@ class DPCode(str, Enum):
     SHAKE = "shake"  # Oscillating
     SHOCK_STATE = "shock_state"  # Vibration status
     SITUATION_SET = "situation_set"
+    SMOKE_SENSOR_STATE = "smoke_sensor_state"
+    SMOKE_SENSOR_STATUS = "smoke_sensor_status"
+    SMOKE_SENSOR_VALUE = "smoke_sensor_value"
     SOS = "sos"  # Emergency State
     SOS_STATE = "sos_state"  # Emergency mode
     SPEED = "speed"  # Speed level
diff --git a/homeassistant/components/tuya/sensor.py b/homeassistant/components/tuya/sensor.py
index 6624635fe18..bea3b52a26e 100644
--- a/homeassistant/components/tuya/sensor.py
+++ b/homeassistant/components/tuya/sensor.py
@@ -14,6 +14,7 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
+    DEVICE_CLASS_CO,
     DEVICE_CLASS_CO2,
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_HUMIDITY,
@@ -94,6 +95,17 @@ SENSORS: dict[str, tuple[SensorEntityDescription, ...]] = {
         ),
         *BATTERY_SENSORS,
     ),
+    # CO Detector
+    # https://developer.tuya.com/en/docs/iot/categorycobj?id=Kaiuz3u1j6q1v
+    "cobj": (
+        SensorEntityDescription(
+            key=DPCode.CO_VALUE,
+            name="Carbon Monoxide",
+            device_class=DEVICE_CLASS_CO,
+            state_class=STATE_CLASS_MEASUREMENT,
+        ),
+        *BATTERY_SENSORS,
+    ),
     # Switch
     # https://developer.tuya.com/en/docs/iot/s?id=K9gf7o5prgf7s
     "kg": (