From 772cbd59d7b9593d35ed9425fc62b4cc61958884 Mon Sep 17 00:00:00 2001
From: Maciej Bieniek <bieniu@users.noreply.github.com>
Date: Wed, 21 Jul 2021 19:11:44 +0200
Subject: [PATCH] Improve typing in Shelly integration (#52544)

---
 .strict-typing                                |   1 +
 homeassistant/components/shelly/__init__.py   |  78 ++++++++----
 .../components/shelly/binary_sensor.py        |  23 +++-
 .../components/shelly/config_flow.py          |  56 ++++++---
 homeassistant/components/shelly/const.py      |  80 ++++++------
 homeassistant/components/shelly/cover.py      |  54 ++++----
 .../components/shelly/device_trigger.py       |  15 ++-
 homeassistant/components/shelly/entity.py     | 116 +++++++++++-------
 homeassistant/components/shelly/light.py      |  50 ++++----
 homeassistant/components/shelly/logbook.py    |  16 ++-
 homeassistant/components/shelly/sensor.py     |  44 ++++---
 homeassistant/components/shelly/switch.py     |  26 ++--
 homeassistant/components/shelly/utils.py      |  40 +++---
 mypy.ini                                      |  11 ++
 14 files changed, 365 insertions(+), 245 deletions(-)

diff --git a/.strict-typing b/.strict-typing
index 40fb375ca16..735d9ca4a64 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -74,6 +74,7 @@ homeassistant.components.remote.*
 homeassistant.components.scene.*
 homeassistant.components.select.*
 homeassistant.components.sensor.*
+homeassistant.components.shelly.*
 homeassistant.components.slack.*
 homeassistant.components.sonos.media_player
 homeassistant.components.ssdp.*
diff --git a/homeassistant/components/shelly/__init__.py b/homeassistant/components/shelly/__init__.py
index 425ff11399b..48e27203288 100644
--- a/homeassistant/components/shelly/__init__.py
+++ b/homeassistant/components/shelly/__init__.py
@@ -1,7 +1,10 @@
 """The Shelly integration."""
+from __future__ import annotations
+
 import asyncio
 from datetime import timedelta
 import logging
+from typing import Any, Final, cast
 
 import aioshelly
 import async_timeout
@@ -15,10 +18,11 @@ from homeassistant.const import (
     CONF_USERNAME,
     EVENT_HOMEASSISTANT_STOP,
 )
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import aiohttp_client, device_registry, update_coordinator
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.typing import ConfigType
 
 from .const import (
     AIOSHELLY_DEVICE_TIMEOUT_SEC,
@@ -43,19 +47,19 @@ from .const import (
 )
 from .utils import get_coap_context, get_device_name, get_device_sleep_period
 
-PLATFORMS = ["binary_sensor", "cover", "light", "sensor", "switch"]
-SLEEPING_PLATFORMS = ["binary_sensor", "sensor"]
-_LOGGER = logging.getLogger(__name__)
+PLATFORMS: Final = ["binary_sensor", "cover", "light", "sensor", "switch"]
+SLEEPING_PLATFORMS: Final = ["binary_sensor", "sensor"]
+_LOGGER: Final = logging.getLogger(__name__)
 
-COAP_SCHEMA = vol.Schema(
+COAP_SCHEMA: Final = vol.Schema(
     {
         vol.Optional(CONF_COAP_PORT, default=DEFAULT_COAP_PORT): cv.port,
     }
 )
-CONFIG_SCHEMA = vol.Schema({DOMAIN: COAP_SCHEMA}, extra=vol.ALLOW_EXTRA)
+CONFIG_SCHEMA: Final = vol.Schema({DOMAIN: COAP_SCHEMA}, extra=vol.ALLOW_EXTRA)
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the Shelly component."""
     hass.data[DOMAIN] = {DATA_CONFIG_ENTRY: {}}
 
@@ -113,7 +117,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     sleep_period = entry.data.get("sleep_period")
 
     @callback
-    def _async_device_online(_):
+    def _async_device_online(_: Any) -> None:
         _LOGGER.debug("Device %s is online, resuming setup", entry.title)
         hass.data[DOMAIN][DATA_CONFIG_ENTRY][entry.entry_id][DEVICE] = None
 
@@ -153,7 +157,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
 async def async_device_setup(
     hass: HomeAssistant, entry: ConfigEntry, device: aioshelly.Device
-):
+) -> None:
     """Set up a device that is online."""
     device_wrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][entry.entry_id][
         COAP
@@ -174,9 +178,11 @@ async def async_device_setup(
 class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
     """Wrapper for a Shelly device with Home Assistant specific functions."""
 
-    def __init__(self, hass, entry, device: aioshelly.Device):
+    def __init__(
+        self, hass: HomeAssistant, entry: ConfigEntry, device: aioshelly.Device
+    ) -> None:
         """Initialize the Shelly device wrapper."""
-        self.device_id = None
+        self.device_id: str | None = None
         sleep_period = entry.data["sleep_period"]
 
         if sleep_period:
@@ -205,7 +211,7 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
         hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, self._handle_ha_stop)
 
     @callback
-    def _async_device_updates_handler(self):
+    def _async_device_updates_handler(self) -> None:
         """Handle device updates."""
         if not self.device.initialized:
             return
@@ -258,7 +264,7 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
                     self.name,
                 )
 
-    async def _async_update_data(self):
+    async def _async_update_data(self) -> None:
         """Fetch data."""
         if self.entry.data.get("sleep_period"):
             # Sleeping device, no point polling it, just mark it unavailable
@@ -267,21 +273,21 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
         _LOGGER.debug("Polling Shelly Device - %s", self.name)
         try:
             async with async_timeout.timeout(POLLING_TIMEOUT_SEC):
-                return await self.device.update()
+                await self.device.update()
         except OSError as err:
             raise update_coordinator.UpdateFailed("Error fetching data") from err
 
     @property
-    def model(self):
+    def model(self) -> str:
         """Model of the device."""
-        return self.entry.data["model"]
+        return cast(str, self.entry.data["model"])
 
     @property
-    def mac(self):
+    def mac(self) -> str:
         """Mac address of the device."""
-        return self.entry.unique_id
+        return cast(str, self.entry.unique_id)
 
-    async def async_setup(self):
+    async def async_setup(self) -> None:
         """Set up the wrapper."""
         dev_reg = await device_registry.async_get_registry(self.hass)
         sw_version = self.device.settings["fw"] if self.device.initialized else ""
@@ -298,7 +304,7 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
         self.device_id = entry.id
         self.device.subscribe_updates(self.async_set_updated_data)
 
-    def shutdown(self):
+    def shutdown(self) -> None:
         """Shutdown the wrapper."""
         if self.device:
             self.device.shutdown()
@@ -306,7 +312,7 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
             self.device = None
 
     @callback
-    def _handle_ha_stop(self, _):
+    def _handle_ha_stop(self, _event: Event) -> None:
         """Handle Home Assistant stopping."""
         _LOGGER.debug("Stopping ShellyDeviceWrapper for %s", self.name)
         self.shutdown()
@@ -315,7 +321,7 @@ class ShellyDeviceWrapper(update_coordinator.DataUpdateCoordinator):
 class ShellyDeviceRestWrapper(update_coordinator.DataUpdateCoordinator):
     """Rest Wrapper for a Shelly device with Home Assistant specific functions."""
 
-    def __init__(self, hass, device: aioshelly.Device):
+    def __init__(self, hass: HomeAssistant, device: aioshelly.Device) -> None:
         """Initialize the Shelly device wrapper."""
         if (
             device.settings["device"]["type"]
@@ -335,22 +341,22 @@ class ShellyDeviceRestWrapper(update_coordinator.DataUpdateCoordinator):
         )
         self.device = device
 
-    async def _async_update_data(self):
+    async def _async_update_data(self) -> None:
         """Fetch data."""
         try:
             async with async_timeout.timeout(AIOSHELLY_DEVICE_TIMEOUT_SEC):
                 _LOGGER.debug("REST update for %s", self.name)
-                return await self.device.update_status()
+                await self.device.update_status()
         except OSError as err:
             raise update_coordinator.UpdateFailed("Error fetching data") from err
 
     @property
-    def mac(self):
+    def mac(self) -> str:
         """Mac address of the device."""
-        return self.device.settings["device"]["mac"]
+        return cast(str, self.device.settings["device"]["mac"])
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     device = hass.data[DOMAIN][DATA_CONFIG_ENTRY][entry.entry_id].get(DEVICE)
     if device is not None:
@@ -370,3 +376,21 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
         hass.data[DOMAIN][DATA_CONFIG_ENTRY].pop(entry.entry_id)
 
     return unload_ok
+
+
+def get_device_wrapper(
+    hass: HomeAssistant, device_id: str
+) -> ShellyDeviceWrapper | None:
+    """Get a Shelly device wrapper for the given device id."""
+    if not hass.data.get(DOMAIN):
+        return None
+
+    for config_entry in hass.data[DOMAIN][DATA_CONFIG_ENTRY]:
+        wrapper: ShellyDeviceWrapper | None = hass.data[DOMAIN][DATA_CONFIG_ENTRY][
+            config_entry
+        ].get(COAP)
+
+        if wrapper and wrapper.device_id == device_id:
+            return wrapper
+
+    return None
diff --git a/homeassistant/components/shelly/binary_sensor.py b/homeassistant/components/shelly/binary_sensor.py
index 385b3b30c36..dd1b3a9d66d 100644
--- a/homeassistant/components/shelly/binary_sensor.py
+++ b/homeassistant/components/shelly/binary_sensor.py
@@ -1,4 +1,8 @@
 """Binary sensor for Shelly."""
+from __future__ import annotations
+
+from typing import Final
+
 from homeassistant.components.binary_sensor import (
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_GAS,
@@ -12,6 +16,9 @@ from homeassistant.components.binary_sensor import (
     STATE_ON,
     BinarySensorEntity,
 )
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .entity import (
     BlockAttributeDescription,
@@ -24,7 +31,7 @@ from .entity import (
 )
 from .utils import is_momentary_input
 
-SENSORS = {
+SENSORS: Final = {
     ("device", "overtemp"): BlockAttributeDescription(
         name="Overheating", device_class=DEVICE_CLASS_PROBLEM
     ),
@@ -83,7 +90,7 @@ SENSORS = {
     ),
 }
 
-REST_SENSORS = {
+REST_SENSORS: Final = {
     "cloud": RestAttributeDescription(
         name="Cloud",
         value=lambda status, _: status["cloud"]["connected"],
@@ -103,7 +110,11 @@ REST_SENSORS = {
 }
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up sensors for device."""
     if config_entry.data["sleep_period"]:
         await async_setup_entry_attribute_entities(
@@ -130,7 +141,7 @@ class ShellyBinarySensor(ShellyBlockAttributeEntity, BinarySensorEntity):
     """Shelly binary sensor entity."""
 
     @property
-    def is_on(self):
+    def is_on(self) -> bool:
         """Return true if sensor state is on."""
         return bool(self.attribute_value)
 
@@ -139,7 +150,7 @@ class ShellyRestBinarySensor(ShellyRestAttributeEntity, BinarySensorEntity):
     """Shelly REST binary sensor entity."""
 
     @property
-    def is_on(self):
+    def is_on(self) -> bool:
         """Return true if REST sensor state is on."""
         return bool(self.attribute_value)
 
@@ -150,7 +161,7 @@ class ShellySleepingBinarySensor(
     """Represent a shelly sleeping binary sensor."""
 
     @property
-    def is_on(self):
+    def is_on(self) -> bool:
         """Return true if sensor state is on."""
         if self.block is not None:
             return bool(self.attribute_value)
diff --git a/homeassistant/components/shelly/config_flow.py b/homeassistant/components/shelly/config_flow.py
index 5bf8277066c..c4ddbc0b0aa 100644
--- a/homeassistant/components/shelly/config_flow.py
+++ b/homeassistant/components/shelly/config_flow.py
@@ -1,6 +1,9 @@
 """Config flow for Shelly integration."""
+from __future__ import annotations
+
 import asyncio
 import logging
+from typing import Any, Dict, Final, cast
 
 import aiohttp
 import aioshelly
@@ -14,19 +17,23 @@ from homeassistant.const import (
     CONF_USERNAME,
     HTTP_UNAUTHORIZED,
 )
+from homeassistant.data_entry_flow import FlowResult
 from homeassistant.helpers import aiohttp_client
+from homeassistant.helpers.typing import DiscoveryInfoType
 
 from .const import AIOSHELLY_DEVICE_TIMEOUT_SEC, DOMAIN
 from .utils import get_coap_context, get_device_sleep_period
 
-_LOGGER = logging.getLogger(__name__)
+_LOGGER: Final = logging.getLogger(__name__)
 
-HOST_SCHEMA = vol.Schema({vol.Required(CONF_HOST): str})
+HOST_SCHEMA: Final = vol.Schema({vol.Required(CONF_HOST): str})
 
-HTTP_CONNECT_ERRORS = (asyncio.TimeoutError, aiohttp.ClientError)
+HTTP_CONNECT_ERRORS: Final = (asyncio.TimeoutError, aiohttp.ClientError)
 
 
-async def validate_input(hass: core.HomeAssistant, host, data):
+async def validate_input(
+    hass: core.HomeAssistant, host: str, data: dict[str, Any]
+) -> dict[str, Any]:
     """Validate the user input allows us to connect.
 
     Data has the keys from DATA_SCHEMA with values provided by the user.
@@ -60,15 +67,17 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
-    host = None
-    info = None
-    device_info = None
+    host: str = ""
+    info: dict[str, Any] = {}
+    device_info: dict[str, Any] = {}
 
-    async def async_step_user(self, user_input=None):
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Handle the initial step."""
-        errors = {}
+        errors: dict[str, str] = {}
         if user_input is not None:
-            host = user_input[CONF_HOST]
+            host: str = user_input[CONF_HOST]
             try:
                 info = await self._async_get_info(host)
             except HTTP_CONNECT_ERRORS:
@@ -106,9 +115,11 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             step_id="user", data_schema=HOST_SCHEMA, errors=errors
         )
 
-    async def async_step_credentials(self, user_input=None):
+    async def async_step_credentials(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Handle the credentials step."""
-        errors = {}
+        errors: dict[str, str] = {}
         if user_input is not None:
             try:
                 device_info = await validate_input(self.hass, self.host, user_input)
@@ -146,7 +157,9 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             step_id="credentials", data_schema=schema, errors=errors
         )
 
-    async def async_step_zeroconf(self, discovery_info):
+    async def async_step_zeroconf(
+        self, discovery_info: DiscoveryInfoType
+    ) -> FlowResult:
         """Handle zeroconf discovery."""
         try:
             self.info = info = await self._async_get_info(discovery_info["host"])
@@ -173,9 +186,11 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
         return await self.async_step_confirm_discovery()
 
-    async def async_step_confirm_discovery(self, user_input=None):
+    async def async_step_confirm_discovery(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Handle discovery confirm."""
-        errors = {}
+        errors: dict[str, str] = {}
         if user_input is not None:
             return self.async_create_entry(
                 title=self.device_info["title"] or self.device_info["hostname"],
@@ -199,10 +214,13 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             errors=errors,
         )
 
-    async def _async_get_info(self, host):
+    async def _async_get_info(self, host: str) -> dict[str, Any]:
         """Get info from shelly device."""
         async with async_timeout.timeout(AIOSHELLY_DEVICE_TIMEOUT_SEC):
-            return await aioshelly.get_info(
-                aiohttp_client.async_get_clientsession(self.hass),
-                host,
+            return cast(
+                Dict[str, Any],
+                await aioshelly.get_info(
+                    aiohttp_client.async_get_clientsession(self.hass),
+                    host,
+                ),
             )
diff --git a/homeassistant/components/shelly/const.py b/homeassistant/components/shelly/const.py
index 119ae478bb7..2c401829c30 100644
--- a/homeassistant/components/shelly/const.py
+++ b/homeassistant/components/shelly/const.py
@@ -1,34 +1,37 @@
 """Constants for the Shelly integration."""
+from __future__ import annotations
 
-COAP = "coap"
-DATA_CONFIG_ENTRY = "config_entry"
-DEVICE = "device"
-DOMAIN = "shelly"
-REST = "rest"
+from typing import Final
 
-CONF_COAP_PORT = "coap_port"
-DEFAULT_COAP_PORT = 5683
+COAP: Final = "coap"
+DATA_CONFIG_ENTRY: Final = "config_entry"
+DEVICE: Final = "device"
+DOMAIN: Final = "shelly"
+REST: Final = "rest"
+
+CONF_COAP_PORT: Final = "coap_port"
+DEFAULT_COAP_PORT: Final = 5683
 
 # Used in "_async_update_data" as timeout for polling data from devices.
-POLLING_TIMEOUT_SEC = 18
+POLLING_TIMEOUT_SEC: Final = 18
 
 # Refresh interval for REST sensors
-REST_SENSORS_UPDATE_INTERVAL = 60
+REST_SENSORS_UPDATE_INTERVAL: Final = 60
 
 # Timeout used for aioshelly calls
-AIOSHELLY_DEVICE_TIMEOUT_SEC = 10
+AIOSHELLY_DEVICE_TIMEOUT_SEC: Final = 10
 
 # Multiplier used to calculate the "update_interval" for sleeping devices.
-SLEEP_PERIOD_MULTIPLIER = 1.2
+SLEEP_PERIOD_MULTIPLIER: Final = 1.2
 
 # Multiplier used to calculate the "update_interval" for non-sleeping devices.
-UPDATE_PERIOD_MULTIPLIER = 2.2
+UPDATE_PERIOD_MULTIPLIER: Final = 2.2
 
 # Shelly Air - Maximum work hours before lamp replacement
-SHAIR_MAX_WORK_HOURS = 9000
+SHAIR_MAX_WORK_HOURS: Final = 9000
 
 # Map Shelly input events
-INPUTS_EVENTS_DICT = {
+INPUTS_EVENTS_DICT: Final = {
     "S": "single",
     "SS": "double",
     "SSS": "triple",
@@ -38,28 +41,20 @@ INPUTS_EVENTS_DICT = {
 }
 
 # List of battery devices that maintain a permanent WiFi connection
-BATTERY_DEVICES_WITH_PERMANENT_CONNECTION = ["SHMOS-01"]
+BATTERY_DEVICES_WITH_PERMANENT_CONNECTION: Final = ["SHMOS-01"]
 
-EVENT_SHELLY_CLICK = "shelly.click"
+EVENT_SHELLY_CLICK: Final = "shelly.click"
 
-ATTR_CLICK_TYPE = "click_type"
-ATTR_CHANNEL = "channel"
-ATTR_DEVICE = "device"
-CONF_SUBTYPE = "subtype"
+ATTR_CLICK_TYPE: Final = "click_type"
+ATTR_CHANNEL: Final = "channel"
+ATTR_DEVICE: Final = "device"
+CONF_SUBTYPE: Final = "subtype"
 
-BASIC_INPUTS_EVENTS_TYPES = {
-    "single",
-    "long",
-}
+BASIC_INPUTS_EVENTS_TYPES: Final = {"single", "long"}
 
-SHBTN_INPUTS_EVENTS_TYPES = {
-    "single",
-    "double",
-    "triple",
-    "long",
-}
+SHBTN_INPUTS_EVENTS_TYPES: Final = {"single", "double", "triple", "long"}
 
-SUPPORTED_INPUTS_EVENTS_TYPES = SHIX3_1_INPUTS_EVENTS_TYPES = {
+SUPPORTED_INPUTS_EVENTS_TYPES: Final = {
     "single",
     "double",
     "triple",
@@ -68,23 +63,20 @@ SUPPORTED_INPUTS_EVENTS_TYPES = SHIX3_1_INPUTS_EVENTS_TYPES = {
     "long_single",
 }
 
-INPUTS_EVENTS_SUBTYPES = {
-    "button": 1,
-    "button1": 1,
-    "button2": 2,
-    "button3": 3,
-}
+SHIX3_1_INPUTS_EVENTS_TYPES = SUPPORTED_INPUTS_EVENTS_TYPES
 
-SHBTN_MODELS = ["SHBTN-1", "SHBTN-2"]
+INPUTS_EVENTS_SUBTYPES: Final = {"button": 1, "button1": 1, "button2": 2, "button3": 3}
 
-STANDARD_RGB_EFFECTS = {
+SHBTN_MODELS: Final = ["SHBTN-1", "SHBTN-2"]
+
+STANDARD_RGB_EFFECTS: Final = {
     0: "Off",
     1: "Meteor Shower",
     2: "Gradual Change",
     3: "Flash",
 }
 
-SHBLB_1_RGB_EFFECTS = {
+SHBLB_1_RGB_EFFECTS: Final = {
     0: "Off",
     1: "Meteor Shower",
     2: "Gradual Change",
@@ -95,8 +87,8 @@ SHBLB_1_RGB_EFFECTS = {
 }
 
 # Kelvin value for colorTemp
-KELVIN_MAX_VALUE = 6500
-KELVIN_MIN_VALUE_WHITE = 2700
-KELVIN_MIN_VALUE_COLOR = 3000
+KELVIN_MAX_VALUE: Final = 6500
+KELVIN_MIN_VALUE_WHITE: Final = 2700
+KELVIN_MIN_VALUE_COLOR: Final = 3000
 
-UPTIME_DEVIATION = 5
+UPTIME_DEVIATION: Final = 5
diff --git a/homeassistant/components/shelly/cover.py b/homeassistant/components/shelly/cover.py
index dc2dba654f3..73b8b1baae3 100644
--- a/homeassistant/components/shelly/cover.py
+++ b/homeassistant/components/shelly/cover.py
@@ -1,4 +1,8 @@
 """Cover for Shelly."""
+from __future__ import annotations
+
+from typing import Any, cast
+
 from aioshelly import Block
 
 from homeassistant.components.cover import (
@@ -10,14 +14,20 @@ from homeassistant.components.cover import (
     SUPPORT_STOP,
     CoverEntity,
 )
-from homeassistant.core import callback
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import ShellyDeviceWrapper
 from .const import COAP, DATA_CONFIG_ENTRY, DOMAIN
 from .entity import ShellyBlockEntity
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up cover for device."""
     wrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][config_entry.entry_id][COAP]
     blocks = [block for block in wrapper.device.blocks if block.type == "roller"]
@@ -36,72 +46,72 @@ class ShellyCover(ShellyBlockEntity, CoverEntity):
     def __init__(self, wrapper: ShellyDeviceWrapper, block: Block) -> None:
         """Initialize light."""
         super().__init__(wrapper, block)
-        self.control_result = None
-        self._supported_features = SUPPORT_OPEN | SUPPORT_CLOSE | SUPPORT_STOP
+        self.control_result: dict[str, Any] | None = None
+        self._supported_features: int = SUPPORT_OPEN | SUPPORT_CLOSE | SUPPORT_STOP
         if self.wrapper.device.settings["rollers"][0]["positioning"]:
             self._supported_features |= SUPPORT_SET_POSITION
 
     @property
-    def is_closed(self):
+    def is_closed(self) -> bool:
         """If cover is closed."""
         if self.control_result:
-            return self.control_result["current_pos"] == 0
+            return cast(bool, self.control_result["current_pos"] == 0)
 
-        return self.block.rollerPos == 0
+        return cast(bool, self.block.rollerPos == 0)
 
     @property
-    def current_cover_position(self):
+    def current_cover_position(self) -> int:
         """Position of the cover."""
         if self.control_result:
-            return self.control_result["current_pos"]
+            return cast(int, self.control_result["current_pos"])
 
-        return self.block.rollerPos
+        return cast(int, self.block.rollerPos)
 
     @property
-    def is_closing(self):
+    def is_closing(self) -> bool:
         """Return if the cover is closing."""
         if self.control_result:
-            return self.control_result["state"] == "close"
+            return cast(bool, self.control_result["state"] == "close")
 
-        return self.block.roller == "close"
+        return cast(bool, self.block.roller == "close")
 
     @property
-    def is_opening(self):
+    def is_opening(self) -> bool:
         """Return if the cover is opening."""
         if self.control_result:
-            return self.control_result["state"] == "open"
+            return cast(bool, self.control_result["state"] == "open")
 
-        return self.block.roller == "open"
+        return cast(bool, self.block.roller == "open")
 
     @property
-    def supported_features(self):
+    def supported_features(self) -> int:
         """Flag supported features."""
         return self._supported_features
 
-    async def async_close_cover(self, **kwargs):
+    async def async_close_cover(self, **kwargs: Any) -> None:
         """Close cover."""
         self.control_result = await self.set_state(go="close")
         self.async_write_ha_state()
 
-    async def async_open_cover(self, **kwargs):
+    async def async_open_cover(self, **kwargs: Any) -> None:
         """Open cover."""
         self.control_result = await self.set_state(go="open")
         self.async_write_ha_state()
 
-    async def async_set_cover_position(self, **kwargs):
+    async def async_set_cover_position(self, **kwargs: Any) -> None:
         """Move the cover to a specific position."""
         self.control_result = await self.set_state(
             go="to_pos", roller_pos=kwargs[ATTR_POSITION]
         )
         self.async_write_ha_state()
 
-    async def async_stop_cover(self, **_kwargs):
+    async def async_stop_cover(self, **_kwargs: Any) -> None:
         """Stop the cover."""
         self.control_result = await self.set_state(go="stop")
         self.async_write_ha_state()
 
     @callback
-    def _update_callback(self):
+    def _update_callback(self) -> None:
         """When device updates, clear control result that overrides state."""
         self.control_result = None
         super()._update_callback()
diff --git a/homeassistant/components/shelly/device_trigger.py b/homeassistant/components/shelly/device_trigger.py
index e767f49bcbb..bcb909555a9 100644
--- a/homeassistant/components/shelly/device_trigger.py
+++ b/homeassistant/components/shelly/device_trigger.py
@@ -1,6 +1,8 @@
 """Provides device triggers for Shelly."""
 from __future__ import annotations
 
+from typing import Any, Final
+
 import voluptuous as vol
 
 from homeassistant.components.automation import AutomationActionType
@@ -20,6 +22,7 @@ from homeassistant.const import (
 from homeassistant.core import CALLBACK_TYPE, HomeAssistant
 from homeassistant.helpers.typing import ConfigType
 
+from . import get_device_wrapper
 from .const import (
     ATTR_CHANNEL,
     ATTR_CLICK_TYPE,
@@ -31,9 +34,9 @@ from .const import (
     SHBTN_MODELS,
     SUPPORTED_INPUTS_EVENTS_TYPES,
 )
-from .utils import get_device_wrapper, get_input_triggers
+from .utils import get_input_triggers
 
-TRIGGER_SCHEMA = DEVICE_TRIGGER_BASE_SCHEMA.extend(
+TRIGGER_SCHEMA: Final = DEVICE_TRIGGER_BASE_SCHEMA.extend(
     {
         vol.Required(CONF_TYPE): vol.In(SUPPORTED_INPUTS_EVENTS_TYPES),
         vol.Required(CONF_SUBTYPE): vol.In(INPUTS_EVENTS_SUBTYPES),
@@ -41,7 +44,9 @@ TRIGGER_SCHEMA = DEVICE_TRIGGER_BASE_SCHEMA.extend(
 )
 
 
-async def async_validate_trigger_config(hass, config):
+async def async_validate_trigger_config(
+    hass: HomeAssistant, config: dict[str, Any]
+) -> dict[str, Any]:
     """Validate config."""
     config = TRIGGER_SCHEMA(config)
 
@@ -62,7 +67,9 @@ async def async_validate_trigger_config(hass, config):
     )
 
 
-async def async_get_triggers(hass: HomeAssistant, device_id: str) -> list[dict]:
+async def async_get_triggers(
+    hass: HomeAssistant, device_id: str
+) -> list[dict[str, str]]:
     """List device triggers for Shelly devices."""
     triggers = []
 
diff --git a/homeassistant/components/shelly/entity.py b/homeassistant/components/shelly/entity.py
index 744272ccf91..743dd07414e 100644
--- a/homeassistant/components/shelly/entity.py
+++ b/homeassistant/components/shelly/entity.py
@@ -4,31 +4,39 @@ from __future__ import annotations
 import asyncio
 from dataclasses import dataclass
 import logging
-from typing import Any, Callable
+from typing import Any, Callable, Final, cast
 
 import aioshelly
 import async_timeout
 
 from homeassistant.components.sensor import ATTR_STATE_CLASS
-from homeassistant.core import callback
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import (
     device_registry,
     entity,
     entity_registry,
     update_coordinator,
 )
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.restore_state import RestoreEntity
+from homeassistant.helpers.typing import StateType
 
 from . import ShellyDeviceRestWrapper, ShellyDeviceWrapper
 from .const import AIOSHELLY_DEVICE_TIMEOUT_SEC, COAP, DATA_CONFIG_ENTRY, DOMAIN, REST
 from .utils import async_remove_shelly_entity, get_entity_name
 
-_LOGGER = logging.getLogger(__name__)
+_LOGGER: Final = logging.getLogger(__name__)
 
 
 async def async_setup_entry_attribute_entities(
-    hass, config_entry, async_add_entities, sensors, sensor_class
-):
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+    sensors: dict[tuple[str, str], BlockAttributeDescription],
+    sensor_class: Callable,
+) -> None:
     """Set up entities for attributes."""
     wrapper: ShellyDeviceWrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][
         config_entry.entry_id
@@ -45,8 +53,12 @@ async def async_setup_entry_attribute_entities(
 
 
 async def async_setup_block_attribute_entities(
-    hass, async_add_entities, wrapper, sensors, sensor_class
-):
+    hass: HomeAssistant,
+    async_add_entities: AddEntitiesCallback,
+    wrapper: ShellyDeviceWrapper,
+    sensors: dict[tuple[str, str], BlockAttributeDescription],
+    sensor_class: Callable,
+) -> None:
     """Set up entities for block attributes."""
     blocks = []
 
@@ -82,8 +94,13 @@ async def async_setup_block_attribute_entities(
 
 
 async def async_restore_block_attribute_entities(
-    hass, config_entry, async_add_entities, wrapper, sensors, sensor_class
-):
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+    wrapper: ShellyDeviceWrapper,
+    sensors: dict[tuple[str, str], BlockAttributeDescription],
+    sensor_class: Callable,
+) -> None:
     """Restore block attributes entities."""
     entities = []
 
@@ -117,8 +134,12 @@ async def async_restore_block_attribute_entities(
 
 
 async def async_setup_entry_rest(
-    hass, config_entry, async_add_entities, sensors, sensor_class
-):
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+    sensors: dict[str, RestAttributeDescription],
+    sensor_class: Callable,
+) -> None:
     """Set up entities for REST sensors."""
     wrapper: ShellyDeviceRestWrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][
         config_entry.entry_id
@@ -177,53 +198,53 @@ class RestAttributeDescription:
 class ShellyBlockEntity(entity.Entity):
     """Helper class to represent a block."""
 
-    def __init__(self, wrapper: ShellyDeviceWrapper, block):
+    def __init__(self, wrapper: ShellyDeviceWrapper, block: aioshelly.Block) -> None:
         """Initialize Shelly entity."""
         self.wrapper = wrapper
         self.block = block
-        self._name: str | None = get_entity_name(wrapper.device, block)
+        self._name = get_entity_name(wrapper.device, block)
 
     @property
-    def name(self):
+    def name(self) -> str:
         """Name of entity."""
         return self._name
 
     @property
-    def should_poll(self):
+    def should_poll(self) -> bool:
         """If device should be polled."""
         return False
 
     @property
-    def device_info(self):
+    def device_info(self) -> DeviceInfo:
         """Device info."""
         return {
             "connections": {(device_registry.CONNECTION_NETWORK_MAC, self.wrapper.mac)}
         }
 
     @property
-    def available(self):
+    def available(self) -> bool:
         """Available."""
         return self.wrapper.last_update_success
 
     @property
-    def unique_id(self):
+    def unique_id(self) -> str:
         """Return unique ID of entity."""
         return f"{self.wrapper.mac}-{self.block.description}"
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """When entity is added to HASS."""
         self.async_on_remove(self.wrapper.async_add_listener(self._update_callback))
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Update entity with latest info."""
         await self.wrapper.async_request_refresh()
 
     @callback
-    def _update_callback(self):
+    def _update_callback(self) -> None:
         """Handle device update."""
         self.async_write_ha_state()
 
-    async def set_state(self, **kwargs):
+    async def set_state(self, **kwargs: Any) -> Any:
         """Set block state (HTTP request)."""
         _LOGGER.debug("Setting state for entity %s, state: %s", self.name, kwargs)
         try:
@@ -261,16 +282,16 @@ class ShellyBlockAttributeEntity(ShellyBlockEntity, entity.Entity):
             unit = unit(block.info(attribute))
 
         self._unit: None | str | Callable[[dict], str] = unit
-        self._unique_id: None | str = f"{super().unique_id}-{self.attribute}"
+        self._unique_id: str = f"{super().unique_id}-{self.attribute}"
         self._name = get_entity_name(wrapper.device, block, self.description.name)
 
     @property
-    def unique_id(self):
+    def unique_id(self) -> str:
         """Return unique ID of entity."""
         return self._unique_id
 
     @property
-    def name(self):
+    def name(self) -> str:
         """Name of sensor."""
         return self._name
 
@@ -280,27 +301,27 @@ class ShellyBlockAttributeEntity(ShellyBlockEntity, entity.Entity):
         return self.description.default_enabled
 
     @property
-    def attribute_value(self):
+    def attribute_value(self) -> StateType:
         """Value of sensor."""
         value = getattr(self.block, self.attribute)
 
         if value is None:
             return None
 
-        return self.description.value(value)
+        return cast(StateType, self.description.value(value))
 
     @property
-    def device_class(self):
+    def device_class(self) -> str | None:
         """Device class of sensor."""
         return self.description.device_class
 
     @property
-    def icon(self):
+    def icon(self) -> str | None:
         """Icon of sensor."""
         return self.description.icon
 
     @property
-    def available(self):
+    def available(self) -> bool:
         """Available."""
         available = super().available
 
@@ -310,7 +331,7 @@ class ShellyBlockAttributeEntity(ShellyBlockEntity, entity.Entity):
         return self.description.available(self.block)
 
     @property
-    def extra_state_attributes(self):
+    def extra_state_attributes(self) -> dict[str, Any] | None:
         """Return the state attributes."""
         if self.description.extra_state_attributes is None:
             return None
@@ -336,12 +357,12 @@ class ShellyRestAttributeEntity(update_coordinator.CoordinatorEntity):
         self._last_value = None
 
     @property
-    def name(self):
+    def name(self) -> str:
         """Name of sensor."""
         return self._name
 
     @property
-    def device_info(self):
+    def device_info(self) -> DeviceInfo:
         """Device info."""
         return {
             "connections": {(device_registry.CONNECTION_NETWORK_MAC, self.wrapper.mac)}
@@ -353,35 +374,36 @@ class ShellyRestAttributeEntity(update_coordinator.CoordinatorEntity):
         return self.description.default_enabled
 
     @property
-    def available(self):
+    def available(self) -> bool:
         """Available."""
         return self.wrapper.last_update_success
 
     @property
-    def attribute_value(self):
+    def attribute_value(self) -> StateType:
         """Value of sensor."""
-        self._last_value = self.description.value(
-            self.wrapper.device.status, self._last_value
-        )
+        if callable(self.description.value):
+            self._last_value = self.description.value(
+                self.wrapper.device.status, self._last_value
+            )
         return self._last_value
 
     @property
-    def device_class(self):
+    def device_class(self) -> str | None:
         """Device class of sensor."""
         return self.description.device_class
 
     @property
-    def icon(self):
+    def icon(self) -> str | None:
         """Icon of sensor."""
         return self.description.icon
 
     @property
-    def unique_id(self):
+    def unique_id(self) -> str:
         """Return unique ID of entity."""
         return f"{self.wrapper.mac}-{self.attribute}"
 
     @property
-    def extra_state_attributes(self) -> dict | None:
+    def extra_state_attributes(self) -> dict[str, Any] | None:
         """Return the state attributes."""
         if self.description.extra_state_attributes is None:
             return None
@@ -400,11 +422,11 @@ class ShellySleepingBlockAttributeEntity(ShellyBlockAttributeEntity, RestoreEnti
         attribute: str,
         description: BlockAttributeDescription,
         entry: entity_registry.RegistryEntry | None = None,
-        sensors: set | None = None,
+        sensors: dict[tuple[str, str], BlockAttributeDescription] | None = None,
     ) -> None:
         """Initialize the sleeping sensor."""
         self.sensors = sensors
-        self.last_state = None
+        self.last_state: StateType = None
         self.wrapper = wrapper
         self.attribute = attribute
         self.block = block
@@ -421,9 +443,9 @@ class ShellySleepingBlockAttributeEntity(ShellyBlockAttributeEntity, RestoreEnti
             )
         elif entry is not None:
             self._unique_id = entry.unique_id
-            self._name = entry.original_name
+            self._name = cast(str, entry.original_name)
 
-    async def async_added_to_hass(self):
+    async def async_added_to_hass(self) -> None:
         """Handle entity which will be added."""
         await super().async_added_to_hass()
 
@@ -434,7 +456,7 @@ class ShellySleepingBlockAttributeEntity(ShellyBlockAttributeEntity, RestoreEnti
             self.description.state_class = last_state.attributes.get(ATTR_STATE_CLASS)
 
     @callback
-    def _update_callback(self):
+    def _update_callback(self) -> None:
         """Handle device update."""
         if (
             self.block is not None
diff --git a/homeassistant/components/shelly/light.py b/homeassistant/components/shelly/light.py
index 8314650d548..047a105a30f 100644
--- a/homeassistant/components/shelly/light.py
+++ b/homeassistant/components/shelly/light.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 import asyncio
 import logging
-from typing import Any
+from typing import Any, Final, cast
 
 from aioshelly import Block
 import async_timeout
@@ -23,7 +23,9 @@ from homeassistant.components.light import (
     LightEntity,
     brightness_supported,
 )
-from homeassistant.core import callback
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.util.color import (
     color_temperature_kelvin_to_mired,
     color_temperature_mired_to_kelvin,
@@ -44,10 +46,14 @@ from .const import (
 from .entity import ShellyBlockEntity
 from .utils import async_remove_shelly_entity
 
-_LOGGER = logging.getLogger(__name__)
+_LOGGER: Final = logging.getLogger(__name__)
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up lights for device."""
     wrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][config_entry.entry_id][COAP]
 
@@ -78,12 +84,12 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
     def __init__(self, wrapper: ShellyDeviceWrapper, block: Block) -> None:
         """Initialize light."""
         super().__init__(wrapper, block)
-        self.control_result = None
-        self.mode_result = None
-        self._supported_color_modes = set()
-        self._supported_features = 0
-        self._min_kelvin = KELVIN_MIN_VALUE_WHITE
-        self._max_kelvin = KELVIN_MAX_VALUE
+        self.control_result: dict[str, Any] | None = None
+        self.mode_result: dict[str, Any] | None = None
+        self._supported_color_modes: set[str] = set()
+        self._supported_features: int = 0
+        self._min_kelvin: int = KELVIN_MIN_VALUE_WHITE
+        self._max_kelvin: int = KELVIN_MAX_VALUE
 
         if hasattr(block, "red") and hasattr(block, "green") and hasattr(block, "blue"):
             self._min_kelvin = KELVIN_MIN_VALUE_COLOR
@@ -113,18 +119,18 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
     def is_on(self) -> bool:
         """If light is on."""
         if self.control_result:
-            return self.control_result["ison"]
+            return cast(bool, self.control_result["ison"])
 
-        return self.block.output
+        return bool(self.block.output)
 
     @property
-    def mode(self) -> str | None:
+    def mode(self) -> str:
         """Return the color mode of the light."""
         if self.mode_result:
-            return self.mode_result["mode"]
+            return cast(str, self.mode_result["mode"])
 
         if hasattr(self.block, "mode"):
-            return self.block.mode
+            return cast(str, self.block.mode)
 
         if (
             hasattr(self.block, "red")
@@ -136,7 +142,7 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
         return "white"
 
     @property
-    def brightness(self) -> int | None:
+    def brightness(self) -> int:
         """Return the brightness of this light between 0..255."""
         if self.mode == "color":
             if self.control_result:
@@ -152,7 +158,7 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
         return round(255 * brightness_pct / 100)
 
     @property
-    def color_mode(self) -> str | None:
+    def color_mode(self) -> str:
         """Return the color mode of the light."""
         if self.mode == "color":
             if hasattr(self.block, "white"):
@@ -191,7 +197,7 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
         return (*self.rgb_color, white)
 
     @property
-    def color_temp(self) -> int | None:
+    def color_temp(self) -> int:
         """Return the CT color value in mireds."""
         if self.control_result:
             color_temp = self.control_result["temp"]
@@ -244,7 +250,7 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
 
         return STANDARD_RGB_EFFECTS[effect_index]
 
-    async def async_turn_on(self, **kwargs) -> None:
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on light."""
         if self.block.type == "relay":
             self.control_result = await self.set_state(turn="on")
@@ -304,12 +310,12 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
 
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs) -> None:
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off light."""
         self.control_result = await self.set_state(turn="off")
         self.async_write_ha_state()
 
-    async def set_light_mode(self, set_mode):
+    async def set_light_mode(self, set_mode: str | None) -> bool:
         """Change device mode color/white if mode has changed."""
         if set_mode is None or self.mode == set_mode:
             return True
@@ -331,7 +337,7 @@ class ShellyLight(ShellyBlockEntity, LightEntity):
         return True
 
     @callback
-    def _update_callback(self):
+    def _update_callback(self) -> None:
         """When device updates, clear control & mode result that overrides state."""
         self.control_result = None
         self.mode_result = None
diff --git a/homeassistant/components/shelly/logbook.py b/homeassistant/components/shelly/logbook.py
index 78a5c279a93..5b0ada6f166 100644
--- a/homeassistant/components/shelly/logbook.py
+++ b/homeassistant/components/shelly/logbook.py
@@ -1,8 +1,13 @@
 """Describe Shelly logbook events."""
+from __future__ import annotations
+
+from typing import Callable
 
 from homeassistant.const import ATTR_DEVICE_ID
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.typing import EventType
 
+from . import get_device_wrapper
 from .const import (
     ATTR_CHANNEL,
     ATTR_CLICK_TYPE,
@@ -10,15 +15,18 @@ from .const import (
     DOMAIN,
     EVENT_SHELLY_CLICK,
 )
-from .utils import get_device_name, get_device_wrapper
+from .utils import get_device_name
 
 
 @callback
-def async_describe_events(hass, async_describe_event):
+def async_describe_events(
+    hass: HomeAssistant,
+    async_describe_event: Callable[[str, str, Callable[[EventType], dict]], None],
+) -> None:
     """Describe logbook events."""
 
     @callback
-    def async_describe_shelly_click_event(event):
+    def async_describe_shelly_click_event(event: EventType) -> dict[str, str]:
         """Describe shelly.click logbook event."""
         wrapper = get_device_wrapper(hass, event.data[ATTR_DEVICE_ID])
         if wrapper:
diff --git a/homeassistant/components/shelly/sensor.py b/homeassistant/components/shelly/sensor.py
index 8a435c3e50f..96ff6e55f8d 100644
--- a/homeassistant/components/shelly/sensor.py
+++ b/homeassistant/components/shelly/sensor.py
@@ -1,6 +1,11 @@
 """Sensor for Shelly."""
+from __future__ import annotations
+
+from typing import Final, cast
+
 from homeassistant.components import sensor
 from homeassistant.components.sensor import SensorEntity
+from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     DEGREE,
@@ -12,6 +17,9 @@ from homeassistant.const import (
     POWER_WATT,
     SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
 )
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import StateType
 
 from .const import SHAIR_MAX_WORK_HOURS
 from .entity import (
@@ -25,7 +33,7 @@ from .entity import (
 )
 from .utils import get_device_uptime, temperature_unit
 
-SENSORS = {
+SENSORS: Final = {
     ("device", "battery"): BlockAttributeDescription(
         name="Battery",
         unit=PERCENTAGE,
@@ -153,7 +161,7 @@ SENSORS = {
         value=lambda value: round(value, 1),
         device_class=sensor.DEVICE_CLASS_TEMPERATURE,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
-        available=lambda block: block.extTemp != 999,
+        available=lambda block: cast(bool, block.extTemp != 999),
     ),
     ("sensor", "humidity"): BlockAttributeDescription(
         name="Humidity",
@@ -161,7 +169,7 @@ SENSORS = {
         value=lambda value: round(value, 1),
         device_class=sensor.DEVICE_CLASS_HUMIDITY,
         state_class=sensor.STATE_CLASS_MEASUREMENT,
-        available=lambda block: block.extTemp != 999,
+        available=lambda block: cast(bool, block.extTemp != 999),
     ),
     ("sensor", "luminosity"): BlockAttributeDescription(
         name="Luminosity",
@@ -199,7 +207,7 @@ SENSORS = {
     ),
 }
 
-REST_SENSORS = {
+REST_SENSORS: Final = {
     "rssi": RestAttributeDescription(
         name="RSSI",
         unit=SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
@@ -217,7 +225,11 @@ REST_SENSORS = {
 }
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up sensors for device."""
     if config_entry.data["sleep_period"]:
         await async_setup_entry_attribute_entities(
@@ -236,36 +248,36 @@ class ShellySensor(ShellyBlockAttributeEntity, SensorEntity):
     """Represent a shelly sensor."""
 
     @property
-    def state(self):
+    def state(self) -> StateType:
         """Return value of sensor."""
         return self.attribute_value
 
     @property
-    def state_class(self):
+    def state_class(self) -> str | None:
         """State class of sensor."""
         return self.description.state_class
 
     @property
-    def unit_of_measurement(self):
+    def unit_of_measurement(self) -> str | None:
         """Return unit of sensor."""
-        return self._unit
+        return cast(str, self._unit)
 
 
 class ShellyRestSensor(ShellyRestAttributeEntity, SensorEntity):
     """Represent a shelly REST sensor."""
 
     @property
-    def state(self):
+    def state(self) -> StateType:
         """Return value of sensor."""
         return self.attribute_value
 
     @property
-    def state_class(self):
+    def state_class(self) -> str | None:
         """State class of sensor."""
         return self.description.state_class
 
     @property
-    def unit_of_measurement(self):
+    def unit_of_measurement(self) -> str | None:
         """Return unit of sensor."""
         return self.description.unit
 
@@ -274,7 +286,7 @@ class ShellySleepingSensor(ShellySleepingBlockAttributeEntity, SensorEntity):
     """Represent a shelly sleeping sensor."""
 
     @property
-    def state(self):
+    def state(self) -> StateType:
         """Return value of sensor."""
         if self.block is not None:
             return self.attribute_value
@@ -282,11 +294,11 @@ class ShellySleepingSensor(ShellySleepingBlockAttributeEntity, SensorEntity):
         return self.last_state
 
     @property
-    def state_class(self):
+    def state_class(self) -> str | None:
         """State class of sensor."""
         return self.description.state_class
 
     @property
-    def unit_of_measurement(self):
+    def unit_of_measurement(self) -> str | None:
         """Return unit of sensor."""
-        return self._unit
+        return cast(str, self._unit)
diff --git a/homeassistant/components/shelly/switch.py b/homeassistant/components/shelly/switch.py
index 6f3dd0b0136..3e35ba878e4 100644
--- a/homeassistant/components/shelly/switch.py
+++ b/homeassistant/components/shelly/switch.py
@@ -1,8 +1,14 @@
 """Switch for Shelly."""
+from __future__ import annotations
+
+from typing import Any, cast
+
 from aioshelly import Block
 
 from homeassistant.components.switch import SwitchEntity
-from homeassistant.core import callback
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import ShellyDeviceWrapper
 from .const import COAP, DATA_CONFIG_ENTRY, DOMAIN
@@ -10,7 +16,11 @@ from .entity import ShellyBlockEntity
 from .utils import async_remove_shelly_entity
 
 
-async def async_setup_entry(hass, config_entry, async_add_entities):
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
     """Set up switches for device."""
     wrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][config_entry.entry_id][COAP]
 
@@ -50,28 +60,28 @@ class RelaySwitch(ShellyBlockEntity, SwitchEntity):
     def __init__(self, wrapper: ShellyDeviceWrapper, block: Block) -> None:
         """Initialize relay switch."""
         super().__init__(wrapper, block)
-        self.control_result = None
+        self.control_result: dict[str, Any] | None = None
 
     @property
     def is_on(self) -> bool:
         """If switch is on."""
         if self.control_result:
-            return self.control_result["ison"]
+            return cast(bool, self.control_result["ison"])
 
-        return self.block.output
+        return bool(self.block.output)
 
-    async def async_turn_on(self, **kwargs):
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on relay."""
         self.control_result = await self.set_state(turn="on")
         self.async_write_ha_state()
 
-    async def async_turn_off(self, **kwargs):
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off relay."""
         self.control_result = await self.set_state(turn="off")
         self.async_write_ha_state()
 
     @callback
-    def _update_callback(self):
+    def _update_callback(self) -> None:
         """When device updates, clear control result that overrides state."""
         self.control_result = None
         super()._update_callback()
diff --git a/homeassistant/components/shelly/utils.py b/homeassistant/components/shelly/utils.py
index 37b34dfe9e8..d8ce5ae9e45 100644
--- a/homeassistant/components/shelly/utils.py
+++ b/homeassistant/components/shelly/utils.py
@@ -3,19 +3,19 @@ from __future__ import annotations
 
 from datetime import datetime, timedelta
 import logging
+from typing import Any, Final, cast
 
 import aioshelly
 
 from homeassistant.const import EVENT_HOMEASSISTANT_STOP, TEMP_CELSIUS, TEMP_FAHRENHEIT
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import singleton
+from homeassistant.helpers.typing import EventType
 from homeassistant.util.dt import utcnow
 
 from .const import (
     BASIC_INPUTS_EVENTS_TYPES,
-    COAP,
     CONF_COAP_PORT,
-    DATA_CONFIG_ENTRY,
     DEFAULT_COAP_PORT,
     DOMAIN,
     SHBTN_INPUTS_EVENTS_TYPES,
@@ -24,10 +24,12 @@ from .const import (
     UPTIME_DEVIATION,
 )
 
-_LOGGER = logging.getLogger(__name__)
+_LOGGER: Final = logging.getLogger(__name__)
 
 
-async def async_remove_shelly_entity(hass, domain, unique_id):
+async def async_remove_shelly_entity(
+    hass: HomeAssistant, domain: str, unique_id: str
+) -> None:
     """Remove a Shelly entity."""
     entity_reg = await hass.helpers.entity_registry.async_get_registry()
     entity_id = entity_reg.async_get_entity_id(domain, DOMAIN, unique_id)
@@ -36,7 +38,7 @@ async def async_remove_shelly_entity(hass, domain, unique_id):
         entity_reg.async_remove(entity_id)
 
 
-def temperature_unit(block_info: dict) -> str:
+def temperature_unit(block_info: dict[str, Any]) -> str:
     """Detect temperature unit."""
     if block_info[aioshelly.BLOCK_VALUE_UNIT] == "F":
         return TEMP_FAHRENHEIT
@@ -45,7 +47,7 @@ def temperature_unit(block_info: dict) -> str:
 
 def get_device_name(device: aioshelly.Device) -> str:
     """Naming for device."""
-    return device.settings["name"] or device.settings["device"]["hostname"]
+    return cast(str, device.settings["name"] or device.settings["device"]["hostname"])
 
 
 def get_number_of_channels(device: aioshelly.Device, block: aioshelly.Block) -> int:
@@ -96,7 +98,7 @@ def get_device_channel_name(
     ):
         return entity_name
 
-    channel_name = None
+    channel_name: str | None = None
     mode = block.type + "s"
     if mode in device.settings:
         channel_name = device.settings[mode][int(block.channel)].get("name")
@@ -112,7 +114,7 @@ def get_device_channel_name(
     return f"{entity_name} channel {chr(int(block.channel)+base)}"
 
 
-def is_momentary_input(settings: dict, block: aioshelly.Block) -> bool:
+def is_momentary_input(settings: dict[str, Any], block: aioshelly.Block) -> bool:
     """Return true if input button settings is set to a momentary type."""
     # Shelly Button type is fixed to momentary and no btn_type
     if settings["device"]["type"] in SHBTN_MODELS:
@@ -134,7 +136,7 @@ def is_momentary_input(settings: dict, block: aioshelly.Block) -> bool:
     return button_type in ["momentary", "momentary_on_release"]
 
 
-def get_device_uptime(status: dict, last_uptime: str) -> str:
+def get_device_uptime(status: dict[str, Any], last_uptime: str) -> str:
     """Return device uptime string, tolerate up to 5 seconds deviation."""
     delta_uptime = utcnow() - timedelta(seconds=status["uptime"])
 
@@ -178,22 +180,8 @@ def get_input_triggers(
     return triggers
 
 
-def get_device_wrapper(hass: HomeAssistant, device_id: str):
-    """Get a Shelly device wrapper for the given device id."""
-    if not hass.data.get(DOMAIN):
-        return None
-
-    for config_entry in hass.data[DOMAIN][DATA_CONFIG_ENTRY]:
-        wrapper = hass.data[DOMAIN][DATA_CONFIG_ENTRY][config_entry].get(COAP)
-
-        if wrapper and wrapper.device_id == device_id:
-            return wrapper
-
-    return None
-
-
 @singleton.singleton("shelly_coap")
-async def get_coap_context(hass):
+async def get_coap_context(hass: HomeAssistant) -> aioshelly.COAP:
     """Get CoAP context to be used in all Shelly devices."""
     context = aioshelly.COAP()
     if DOMAIN in hass.data:
@@ -204,7 +192,7 @@ async def get_coap_context(hass):
     await context.initialize(port)
 
     @callback
-    def shutdown_listener(ev):
+    def shutdown_listener(ev: EventType) -> None:
         context.close()
 
     hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, shutdown_listener)
@@ -212,7 +200,7 @@ async def get_coap_context(hass):
     return context
 
 
-def get_device_sleep_period(settings: dict) -> int:
+def get_device_sleep_period(settings: dict[str, Any]) -> int:
     """Return the device sleep period in seconds or 0 for non sleeping devices."""
     sleep_period = 0
 
diff --git a/mypy.ini b/mypy.ini
index cf85d2e60a9..22cd7f4a1e0 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -825,6 +825,17 @@ no_implicit_optional = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.shelly.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.slack.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true