Enable mypy strict compliance

.gitignore

@@ -1,2 +1,3 @@
 __pycache__
 /env
+/out

.pre-commit-config.yaml

@@ -13,7 +13,6 @@ repos:
     hooks:
       - id: flake8
         args: ["--max-line-length=88", "--extend-ignore=E203"]
-        exclude: "lyceedupaysdesoule/settings/|migrations"
 
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: "v1.13.0"

mypy.ini

@@ -0,0 +1,4 @@
+[mypy]
+python_executable = ./env/bin/python
+strict = True
+pretty = True

oin_thermostat/__main__.py

@@ -8,7 +8,7 @@ logger = logging.getLogger(__name__)
 config_path = "config.toml"
 
 
-def main():
+def main() -> int:
     with open(config_path, "rb") as config_file:
         config = tomllib.load(config_file)
 
@@ -18,7 +18,7 @@ def main():
     if ha_config is None:
         logger.error(f"Missing home assistant config in <{config_path}>")
         logger.error(f"\t{config}")
-        sys.exit(1)
+        return 1
 
     client = HAClient(
         ha_config.get("entity"),
@@ -26,10 +26,16 @@ def main():
         mqtt_config=ha_config.get("mqtt"),
     )
 
-    client.connect()
+    code = client.connect()
+    if code != 0:
+        return 1
 
-    client.loop()
+    code = client.loop()
+    if code != 0:
+        return 1
+
+    return 0
 
 
 if __name__ == "__main__":
-    main()
+    sys.exit(main())

oin_thermostat/mqtt.py

@@ -1,10 +1,10 @@
 import json
 import logging
-import sys
 from collections.abc import Callable
 from typing import Any
 
 import paho.mqtt.client as mqtt
+from paho.mqtt.enums import CallbackAPIVersion, MQTTErrorCode
 
 from .screen import Screen
 from .select import Selector
@@ -26,7 +26,7 @@ class HAClient:
         self.state_topic = "oin/state"
         self.availability_topic = "oin/availability"
 
-        self.client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
+        self.client = mqtt.Client(CallbackAPIVersion.VERSION2)
         username = self.config.get("username", None)
         logger.debug(f"Setting up MQTT with user <{username}>")
         self.client.username_pw_set(
@@ -52,28 +52,68 @@ class HAClient:
             "cmps": self.selector.ha_options,
         }
 
-    def connect(self) -> None:
+    def connect(self) -> int:
         self.client.will_set(self.availability_topic, "offline", retain=True)
 
         host = self.config.get("host")
         port = self.config.get("port", 1883)
-        logger.debug(f"Connecting to <{host}> on port <{port}>.")
-        self.client.connect(host, port)
 
-        self.subscribe(entity_topic(self.entity), self.state_update)
+        if host is None:
-        self.subscribe(
+            logger.error("Host not found in config.")
+            logger.error(f"\t{self.config}")
+            return 1
+        if not isinstance(port, int):
+            logger.warning(f"Invalid port config : <{port}> ; using port 1883.")
+            port = 1883
+
+        logger.debug(f"Connecting to <{host}> on port <{port}>.")
+        code = self.client.connect(host, port)
+        if code != 0:
+            logger.error(f"Could not connect to host <{host}> on port <{port}>.")
+            return 1
+
+        code = self.subscribe(entity_topic(self.entity), self.state_update)
+        if code != 0:
+            return 1
+        code = self.subscribe(
             [entity_topic(entity) for entity in self.secondary_entities],
             self.secondary_state_update,
         )
+        if code != 0:
+            return 1
 
-        self.publish("homeassistant/device/oin/config", self.ha_options, retain=True)
+        m_info = self.publish_json(
-        self.client.publish(self.availability_topic, "online", retain=True)
+            "homeassistant/device/oin/config", self.ha_options, retain=True
+        )
+        m_info.wait_for_publish(60)
+        if not m_info.is_published():
+            logger.error("Config message timed out")
+            return 1
 
-    def publish(self, topic: str, data: Any, **kwargs) -> mqtt.MQTTMessageInfo:
+        m_info = self.publish(self.availability_topic, "online", retain=True)
-        logger.debug(f"Sending message on topic <{topic}>: {json.dumps(data)}")
+        m_info.wait_for_publish(60)
-        return self.client.publish(topic, json.dumps(data), **kwargs)
+        if not m_info.is_published():
+            logger.error("Availability message timed out")
+            return 1
 
-    def subscribe(self, topic: str | list[str], callback: Callable) -> None:
+        return 0
+
+    def publish(
+        self, topic: str, data: str, retain: bool = False
+    ) -> mqtt.MQTTMessageInfo:
+        logger.debug(f"Sending message on topic <{topic}>.")
+        return self.client.publish(topic, data, retain=retain)
+
+    def publish_json(
+        self, topic: str, data: Any, retain: bool = False
+    ) -> mqtt.MQTTMessageInfo:
+        return self.publish(topic, json.dumps(data), retain)
+
+    def subscribe(
+        self,
+        topic: str | list[str],
+        callback: Callable[[mqtt.Client, Any, mqtt.MQTTMessage], None],
+    ) -> MQTTErrorCode:
         logger.debug(f"Subscribing to <{topic}>.")
 
         match topic:
@@ -87,39 +127,41 @@ class HAClient:
 
         if code != 0:
             logger.error(f"Failed subscribing to topic <{topic}> with code <{code}>.")
-            sys.exit(1)
+        return code
 
-    def loop(self) -> mqtt.MQTTErrorCode:
+    def loop(self) -> MQTTErrorCode:
         logger.info("Starting MQTT client loop.")
         code = self.client.loop_forever(retry_first_connection=True)
 
         if code != 0:
             logger.error("MQTT client loop failed with code <{code}>.")
+        return code
 
     def state_update(
         self, client: mqtt.Client, userdata: Any, message: mqtt.MQTTMessage
     ) -> None:
-        logger.debug(f"Message received on topic <{message.topic}>: {message.payload}.")
+        data = message.payload.decode()
+        logger.debug(f"Message received on topic <{message.topic}>: {data}.")
 
         subtopic = message.topic.rsplit("/", maxsplit=1)[1]
 
         match subtopic:
             case "current_temperature":
-                self.screen.value = parse(message)
+                self.screen.value = json.loads(data)
             case "temperature":
-                if (value := parse(message)) != self.selector.temperature:
+                if (value := json.loads(data)) != self.selector.temperature:
                     self.screen.tmp_value = value
                     self.selector.temperature = value
             case "hvac_action":
-                self.screen.mode = parse(message)
+                self.screen.mode = json.loads(data)
             case "preset_modes":
-                if (value := parse(message)) != self.selector.preset_modes:
+                if (value := json.loads(data)) != self.selector.preset_modes:
                     self.selector.preset_modes = value
             case "preset_mode":
-                if (value := parse(message)) != self.selector.mode:
+                if (value := json.loads(data)) != self.selector.mode:
                     self.selector.mode = value
             case "state":
-                match message.payload.decode():
+                match data:
                     case "heat":
                         self.selector.switch = True
                     case "off":
@@ -128,20 +170,17 @@ class HAClient:
     def secondary_state_update(
         self, client: mqtt.Client, userdata: Any, message: mqtt.MQTTMessage
     ) -> None:
-        logger.debug(f"Message received on topic <{message.topic}>: {message.payload}.")
+        data = message.payload.decode()
+        logger.debug(f"Message received on topic <{message.topic}>: {data}.")
 
         _, grp, ent, subtopic = message.topic.split("/")
         idx = self.secondary_entities.index(f"{grp}.{ent}")
 
         if subtopic == "state":
-            self.screen.secondary |= {idx: message.payload.decode()}
+            self.screen.secondary |= {idx: data}
 
     def send_data(self, data: Any) -> mqtt.MQTTMessageInfo:
-        return self.publish(self.state_topic, data)
+        return self.publish_json(self.state_topic, data)
-
-
-def parse(message: mqtt.MQTTMessage) -> Any:
-    return json.loads(message.payload.decode())
 
 
 def entity_topic(entity: str, subtopic: str = "#") -> str:

oin_thermostat/screen.py

@@ -3,36 +3,36 @@ import math
 from threading import Timer
 
 import bdfparser
-from sense_hat import SenseHat
+from sense_hat import InputEvent, SenseHat
 
 logger = logging.getLogger(__name__)
 
 COLORS = {
-    "Bleu": [0, 0, 255],
+    "Bleu": (0, 0, 255),
-    "Blanc": [255, 255, 255],
+    "Blanc": (255, 255, 255),
-    "Rouge": [255, 0, 0],
+    "Rouge": (255, 0, 0),
-    "Verte": [0, 127, 31],
+    "Verte": (0, 127, 31),
-    "Jaune": [255, 255, 0],
+    "Jaune": (255, 255, 0),
-    "heat": [255, 0, 0],
+    "heat": (255, 0, 0),
-    "heating": [255, 0, 0],
+    "heating": (255, 0, 0),
-    "idle": [127, 0, 255],
+    "idle": (127, 0, 255),
-    "off": [127, 127, 127],
+    "off": (127, 127, 127),
-    "on_setting": [255, 255, 0],
+    "on_setting": (255, 255, 0),
-    "off_setting": [255, 255, 255],
+    "off_setting": (255, 255, 255),
-    None: [0, 0, 0],
+    None: (0, 0, 0),
 }
 
 
 class Screen:
-    def __init__(self):
+    def __init__(self) -> None:
         self.sense = SenseHat()
         self._value = ""
         self._tmp = False
-        self._tmp_value = None
+        self._tmp_value = ""
-        self._mode = None
+        self._mode = ""
         self.font = bdfparser.Font("src/tom-thumb.bdf")
-        self._secondary = dict()
+        self._secondary: dict[int, str] = dict()
-        self._secondary_pixels = [[0, 0, 0]] * 8
+        self._secondary_pixels: list[tuple[int, int, int]] = [(0, 0, 0)] * 8
 
         self.timer = Timer(0, self.set_pixels)
 
@@ -40,11 +40,11 @@ class Screen:
         self.sense.stick.direction_middle = self.stick_click
 
     @property
-    def value(self):
+    def value(self) -> None | str:
         return self._value
 
     @value.setter
-    def value(self, value):
+    def value(self, value: float) -> None:
         logger.debug(f"Updated value: <{value}>")
 
         self._value = format_value(value)
@@ -52,32 +52,32 @@ class Screen:
             self.set_pixels()
 
     @property
-    def color(self):
+    def color(self) -> tuple[int, int, int]:
-        return COLORS.get(self.mode, [0, 0, 0])
+        return COLORS.get(self.mode, (0, 0, 0))
 
     @property
-    def mode(self):
+    def mode(self) -> str:
         return self._mode
 
     @mode.setter
-    def mode(self, value):
+    def mode(self, value: str) -> None:
         self._mode = value
         if not self._tmp:
             self.set_pixels()
 
     @property
-    def tmp_value(self):
+    def tmp_value(self) -> None | str:
         return self._tmp_value
 
     @tmp_value.setter
-    def tmp_value(self, value):
+    def tmp_value(self, value: float) -> None:
         logger.debug(f"Show value: <{value}>")
 
         self.timer.cancel()
         self._tmp_value = format_value(value)
         self.show_tmp()
 
-    def show_tmp(self):
+    def show_tmp(self) -> None:
         self._tmp = True
         self.set_pixels(
             self.tmp_value,
@@ -86,7 +86,12 @@ class Screen:
         self.timer = Timer(3, self.set_pixels)
         self.timer.start()
 
-    def set_pixels(self, value=None, color=None, bg_color=[0, 0, 0]):
+    def set_pixels(
+        self,
+        value: str | None = None,
+        color: tuple[int, int, int] | None = None,
+        bg_color: tuple[int, int, int] = (0, 0, 0),
+    ) -> None:
         if value is None:
             value = self.value
             self._tmp = False
@@ -99,32 +104,32 @@ class Screen:
                 for x in self.font.draw(value, mode=0).crop(8, 7).todata(3)
             ]
         else:
-            pixels = 48 * [[0, 0, 0]]
+            pixels = 48 * [(0, 0, 0)]
         pixels += self.secondary_pixels
 
         self.sense.set_pixels(pixels)
 
     @property
-    def secondary(self):
+    def secondary(self) -> dict[int, str]:
         return self._secondary
 
     @secondary.setter
-    def secondary(self, value):
+    def secondary(self, value: dict[int, str]) -> None:
         self._secondary = value
 
         for idx in range(2):
             self._secondary_pixels[4 * idx : 4 * (idx + 1)] = [
-                COLORS.get(value.get(idx, None), [0, 0, 0])
+                COLORS.get(value.get(idx, None), (0, 0, 0))
             ] * 4
 
         if not self._tmp:
             self.set_pixels()
 
     @property
-    def secondary_pixels(self):
+    def secondary_pixels(self) -> list[tuple[int, int, int]]:
         return self._secondary_pixels
 
-    def stick_click(self, event):
+    def stick_click(self, event: InputEvent) -> None:
         match (event.action, self._held):
             case ("held", False):
                 self._held = True
@@ -134,7 +139,7 @@ class Screen:
                 self.show_tmp()
 
 
-def format_value(value):
+def format_value(value: float) -> str:
     v = math.trunc(value)
     d = "." if (value - v) >= 0.5 else ""
     return f"{v}{d}"

oin_thermostat/select.py

@@ -1,18 +1,19 @@
 import logging
 import math
+from collections.abc import Callable
 
-from sense_hat import ACTION_HELD, ACTION_RELEASED, SenseHat
+from sense_hat import ACTION_HELD, ACTION_RELEASED, InputEvent, SenseHat
 
 logger = logging.getLogger(__name__)
 
 
 class Selector:
-    def __init__(self, send_data):
+    def __init__(self, send_data: Callable[[dict[str, float | str | None]], None]):
         self.stick = SenseHat().stick
         self.temperature = None
         self.mode = None
         self.switch = None
-        self.preset_modes = []
+        self.preset_modes: list[str] = []
         self.send_data = send_data
         self.switch_held = False
         self.default_data = {"temperature": None, "mode": None, "switch": None}
@@ -26,7 +27,7 @@ class Selector:
         self.stick.direction_left = self.prev_mode
 
     @property
-    def ha_options(self):
+    def ha_options(self) -> dict[str, dict[str, str]]:
         return {
             "temperature": {
                 "p": "sensor",
@@ -55,36 +56,42 @@ class Selector:
             },
         }
 
-    def increase_temperature(self, event):
+    def increase_temperature(self, event: InputEvent) -> None:
         if event.action != ACTION_RELEASED and self.temperature is not None:
-            self.callback(temperature=math.floor(self.temperature * 2) / 2 + 0.5)
+            self.callback({"temperature": math.floor(self.temperature * 2) / 2 + 0.5})
 
-    def decrease_temperature(self, event):
+    def decrease_temperature(self, event: InputEvent) -> None:
         if event.action != ACTION_RELEASED and self.temperature is not None:
-            self.callback(temperature=math.ceil(self.temperature * 2) / 2 - 0.5)
+            self.callback({"temperature": math.ceil(self.temperature * 2) / 2 - 0.5})
 
-    def next_mode(self, event):
+    def next_mode(self, event: InputEvent) -> None:
         if event.action != ACTION_RELEASED and self.mode is not None:
             self.callback(
-                mode=self.preset_modes[
+                {
-                    (self.preset_modes.index(self.mode) + 1) % len(self.preset_modes)
+                    "mode": self.preset_modes[
-                ]
+                        (self.preset_modes.index(self.mode) + 1)
+                        % len(self.preset_modes)
+                    ]
+                }
             )
 
-    def prev_mode(self, event):
+    def prev_mode(self, event: InputEvent) -> None:
         if event.action != ACTION_RELEASED and self.mode is not None:
             self.callback(
-                mode=self.preset_modes[
+                {
-                    (self.preset_modes.index(self.mode) - 1) % len(self.preset_modes)
+                    "mode": self.preset_modes[
-                ]
+                        (self.preset_modes.index(self.mode) - 1)
+                        % len(self.preset_modes)
+                    ]
+                }
             )
 
-    def toggle(self, event):
+    def toggle(self, event: InputEvent) -> None:
         if not self.switch_held and event.action == ACTION_HELD:
             self.switch_held = True
-            self.callback(switch="off" if self.switch else "heat")
+            self.callback({"switch": "off" if self.switch else "heat"})
         elif self.switch_held and event.action == ACTION_RELEASED:
             self.switch_held = False
 
-    def callback(self, **kwargs):
+    def callback(self, data: dict[str, float | str | None]) -> None:
-        self.send_data(self.default_data | kwargs)
+        self.send_data(self.default_data | data)