Expand development file ignores

.gitignore

@@ -2,3 +2,17 @@
 __pycache__/
 *.py[cod]
 .venv/
+
+# Captures potentiellement sensibles
+captures/
+
+# Caches et rapports de tests
+.pytest_cache/
+.coverage
+coverage.xml
+htmlcov/
+
+# Fichiers d’éditeur et système
+.vscode/
+.idea/
+.DS_Store

CHANGELOG.md

@@ -0,0 +1,24 @@
+# Changelog
+
+## [0.1.0] - 2026-07-21
+
+### Added
+
+- Configuration depuis l’interface Home Assistant.
+- Connexion locale au proxy Arkteos sur le port 9641.
+- Client TCP asynchrone strictement en lecture seule.
+- Extraction incrémentale des trames.
+- Prise en charge des trames metadata, frigo et regulation.
+- Capteur de connectivité.
+- Capteurs natifs Home Assistant.
+- Diagnostics avec masquage de l’hôte.
+- Prise en charge de la reconfiguration.
+- Tests hors ligne avec fixtures réelles.
+- Préparation HACS.
+
+### Known limitations
+
+- Protocole non officiellement documenté.
+- Absence de checksum démontré.
+- Aucune commande ou écriture vers la PAC.
+- Compatibilité réelle encore à valider en parallèle de Node-RED.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Raph666
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,45 +1,108 @@
-# Arkteos — développement
+# Arkteos pour Home Assistant
 
-Ce dépôt prépare une intégration custom Home Assistant en lecture seule pour
+## Présentation
-une PAC Arkteos Zuran 4.
 
-L'intégration devra lire exclusivement le flux du proxy TCP fourni par l'addon
+Arkteos est une intégration Home Assistant personnalisée pour une PAC Arkteos
-Home Assistant séparé, sur le port de référence `9641`. Elle ne doit jamais se
+Zuran 4. Elle lit localement les données du proxy Arkteos, selon un protocole
-connecter directement à la PAC ni écrire sur le proxy.
+REG3 observé à partir de captures réelles et du flow Node-RED de référence.
 
-## Références disponibles
+L’intégration est strictement en lecture seule : elle n’envoie aucune commande
+à la PAC et ne contacte jamais directement celle-ci. Elle ne dépend ni de MQTT,
+ni de Node-RED une fois la migration terminée.
 
-- `references/arkteos_nodered_flow.json` : flow Node-RED fonctionnel en
+## État du projet
-  production et seule référence actuelle pour le parsing.
-- `references/proxy_protocol_notes.md` : notes de contexte sur le proxy et les
-  tailles de trames rapportées.
 
-## État du dépôt
+- Version actuelle : `0.1.0`.
+- Statut : expérimental.
+- Testée avec les captures d’une Arkteos Zuran 4.
+- Le protocole n’est pas officiellement documenté.
+- Conserve Node-RED en parallèle pendant la validation sur l’installation
+  réelle.
 
-L'intégration Home Assistant n'est pas encore écrite. Aucun comportement de
+## Prérequis
-framing TCP ne doit être supposé sans captures ou tests démonstratifs.
 
-## Arborescence cible proposée
+- Home Assistant.
+- HACS pour l’installation recommandée.
+- Un proxy Arkteos accessible sur le réseau.
+- Le port par défaut du proxy est `9641`.
+- La PAC ne doit pas être contactée directement.
+- Le proxy conserve la connexion unique vers la PAC et accepte les clients.
 
-```text
+## Installation avec HACS
-custom_components/
+
-  arkteos/
+1. Ouvre HACS.
-    __init__.py
+2. Va dans **Intégrations**.
-    manifest.json
+3. Ouvre le menu **Dépôts personnalisés**.
-    config_flow.py
+4. Ajoute l’URL du miroir GitHub :
-    const.py
+   `https://github.com/raph666/home-assistant-arkteos`.
-    coordinator.py
+5. Choisis la catégorie **Intégration**.
-    parser.py
+6. Installe **Arkteos**.
-    sensor.py
+7. Redémarre Home Assistant.
-    binary_sensor.py
+8. Va dans **Paramètres > Appareils et services**.
-    strings.json
+9. Ajoute **Arkteos**.
-    translations/
+10. Saisis l’hôte du proxy et le port `9641`.
-      fr.json
+
-tests/
+Le miroir GitHub sert à l’installation HACS.
-  components/
+
-    arkteos/
+## Configuration
-references/
+
+La configuration demande l’hôte et le port du proxy. Elle est validée par une
+connexion au proxy et la réception d’une trame valide. La reconfiguration est
+possible depuis Home Assistant.
+
+## Entités exposées
+
+L’intégration expose des entités natives Home Assistant pour :
+
+- la connectivité ;
+- le groupe frigorifique ;
+- la régulation ;
+- le circuit primaire ;
+- l’eau chaude sanitaire ;
+- les statuts et diagnostics.
+
+Certaines entités de diagnostic sont désactivées par défaut.
+
+## Diagnostics
+
+Les diagnostics sont téléchargeables depuis Home Assistant. L’hôte est masqué
+et aucune trame brute, socket ou donnée interne sensible n’est exposée.
+
+## Validation parallèle avec Node-RED
+
+Le flow Node-RED doit rester actif au début. Compare les anciennes entités MQTT
+avec les nouvelles entités natives, puis retire Node-RED uniquement après une
+validation des valeurs en conditions réelles.
+
+## Limites connues
+
+- Le protocole est déduit de captures.
+- Aucun checksum n’est démontré.
+- Seules les trames observées de 95, 163 et 227 octets sont reconnues.
+- L’intégration est en lecture seule et ne permet aucune commande de pilotage.
+- La compatibilité est confirmée uniquement avec la configuration testée.
+- Arkteos ne fournit aucun support officiel pour cette intégration.
+
+## Développement
+
+```bash
+python3 -m venv .venv
+source .venv/bin/activate
+python3 -m pip install -r requirements_test.txt
+python3 -m pytest -v
+python3 -m compileall custom_components/arkteos
 ```
 
-Cette arborescence est une proposition : elle ne crée encore aucun de ces
+## Licence
-fichiers.
+
+MIT — Copyright (c) 2026 Raph666
+
+## Support
+
+Tant que le dépôt principal reste sur Gitea, utilise ces URLs pour le code et
+les tickets :
+
+- Dépôt : https://gitea.i-host.fr/raph666/home-assistant-arkteos
+- Tickets : https://gitea.i-host.fr/raph666/home-assistant-arkteos/issues
+
+Le miroir GitHub sert à l’installation HACS.

custom_components/arkteos/__init__.py

@@ -1 +1,75 @@
 """Paquet de l'intégration Arkteos."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from .client import ArkteosClient
+from .const import CONF_HOST, CONF_PORT, DOMAIN, PLATFORMS
+
+if TYPE_CHECKING:
+    from homeassistant.config_entries import ConfigEntry
+    from homeassistant.core import HomeAssistant
+
+
+def _get_client(hass: HomeAssistant, entry: ConfigEntry) -> ArkteosClient | None:
+    """Retourne le client partagé, depuis runtime_data ou le repli structuré."""
+
+    client = getattr(entry, "runtime_data", None)
+    if isinstance(client, ArkteosClient):
+        return client
+    return hass.data.get(DOMAIN, {}).get(entry.entry_id)
+
+
+def _store_client(hass: HomeAssistant, entry: ConfigEntry, client: ArkteosClient) -> None:
+    """Stocke le client une fois par config entry."""
+
+    if hasattr(entry, "runtime_data"):
+        entry.runtime_data = client
+        return
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = client
+
+
+def _remove_client(hass: HomeAssistant, entry: ConfigEntry) -> None:
+    """Supprime les données d'exécution de la config entry."""
+
+    if hasattr(entry, "runtime_data"):
+        entry.runtime_data = None
+    domain_data = hass.data.get(DOMAIN)
+    if domain_data is not None:
+        domain_data.pop(entry.entry_id, None)
+        if not domain_data:
+            hass.data.pop(DOMAIN, None)
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Crée et partage le client Arkteos pour cette config entry."""
+
+    if _get_client(hass, entry) is not None:
+        return True
+
+    client = ArkteosClient(entry.data[CONF_HOST], entry.data[CONF_PORT])
+    _store_client(hass, entry, client)
+    await client.start()
+    try:
+        await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
+    except Exception:
+        await client.stop()
+        _remove_client(hass, entry)
+        return False
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Décharge les plateformes et arrête le client partagé."""
+
+    client = _get_client(hass, entry)
+    if client is None:
+        return True
+
+    unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
+    if not unload_ok:
+        return False
+    await client.stop()
+    _remove_client(hass, entry)
+    return True

custom_components/arkteos/binary_sensor.py

@@ -0,0 +1,40 @@
+"""Binary sensor de disponibilité du proxy Arkteos."""
+
+from __future__ import annotations
+
+from homeassistant.components.binary_sensor import BinarySensorDeviceClass, BinarySensorEntity
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import _get_client
+from .const import DOMAIN
+from .entity import ArkteosEntity
+
+
+async def async_setup_entry(hass, entry, async_add_entities: AddEntitiesCallback) -> None:
+    """Ajoute l'unique entité de connexion de cette config entry."""
+
+    client = _get_client(hass, entry)
+    if client is None:
+        return
+    async_add_entities([ArkteosConnectionBinarySensor(client)])
+
+
+class ArkteosConnectionBinarySensor(ArkteosEntity, BinarySensorEntity):
+    """Expose la disponibilité du flux lu depuis le proxy."""
+
+    _attr_translation_key = "connection"
+    _attr_unique_id = "arkteos_zuran4_connection"
+    _attr_device_class = BinarySensorDeviceClass.CONNECTIVITY
+    _attr_device_info = DeviceInfo(
+        identifiers={(DOMAIN, "arkteos_zuran4")},
+        manufacturer="Arkteos",
+        model="Zuran 4",
+        name="PAC Arkteos Zuran 4",
+    )
+
+    @property
+    def is_on(self) -> bool:
+        """Reflète la disponibilité du client sans effectuer de lecture réseau."""
+
+        return self._client.available

custom_components/arkteos/client.py

@@ -0,0 +1,288 @@
+"""Client TCP asynchrone, strictement en lecture seule, pour le proxy Arkteos."""
+
+from __future__ import annotations
+
+import asyncio
+import inspect
+from collections.abc import Awaitable, Callable, Sequence
+from contextlib import suppress
+from typing import Final, TypeAlias
+
+from .frame_extractor import FrameExtractor
+from .parser import FilterResult, FrameError, ParsedFrame, filter_values, parse_frame
+
+
+DEFAULT_PROXY_PORT: Final = 9641
+DEFAULT_RECONNECT_DELAYS: Final[tuple[float, ...]] = (1.0, 2.0, 5.0, 10.0, 30.0)
+
+DataCallback: TypeAlias = Callable[
+    [str, dict[str, int | float | str], dict[str, int | float]], object
+]
+AvailabilityCallback: TypeAlias = Callable[[bool], object]
+SleepCallable: TypeAlias = Callable[[float], Awaitable[None]]
+
+
+class ArkteosClient:
+    """Lit le proxy Arkteos, extrait les trames et diffuse les données filtrées."""
+
+    def __init__(
+        self,
+        host: str,
+        port: int = DEFAULT_PROXY_PORT,
+        *,
+        read_size: int = 1024,
+        frame_timeout: float = 30.0,
+        reconnect_delays: Sequence[float] = DEFAULT_RECONNECT_DELAYS,
+        max_buffer_size: int = 4096,
+        sleep: SleepCallable = asyncio.sleep,
+    ) -> None:
+        if not host:
+            raise ValueError("host ne peut pas être vide")
+        if not 1 <= port <= 65535:
+            raise ValueError("port doit être compris entre 1 et 65535")
+        if read_size < 1:
+            raise ValueError("read_size doit être positif")
+        if frame_timeout <= 0:
+            raise ValueError("frame_timeout doit être positif")
+        if not reconnect_delays or any(delay < 0 for delay in reconnect_delays):
+            raise ValueError("reconnect_delays doit contenir des délais positifs ou nuls")
+
+        self.host = host
+        self.port = port
+        self.read_size = read_size
+        self.frame_timeout = frame_timeout
+        self.reconnect_delays = tuple(reconnect_delays)
+
+        self.running = False
+        self.connected = False
+        self.available = False
+        self.last_valid_frame: ParsedFrame | None = None
+        self.last_frame_type: str | None = None
+        self.latest_frigo_data: dict[str, int | float | str] | None = None
+        self.latest_regulation_data: dict[str, int | float | str] | None = None
+        self.latest_metadata: dict[str, int | float | str] | None = None
+        self.frames_received = 0
+        self.frames_rejected = 0
+        self.bytes_received = 0
+        self.connection_attempts = 0
+        self.reconnect_count = 0
+        self.last_error: Exception | None = None
+
+        self._extractor = FrameExtractor(max_buffer_size=max_buffer_size)
+        self._sleep = sleep
+        self._task: asyncio.Task[None] | None = None
+        self._writer: asyncio.StreamWriter | None = None
+        self._connected_event = asyncio.Event()
+        self._data_callbacks: list[DataCallback] = []
+        self._availability_callbacks: list[AvailabilityCallback] = []
+
+    async def start(self) -> None:
+        """Démarre la tâche de connexion si le client n'est pas déjà actif."""
+
+        if self.running:
+            return
+
+        self.running = True
+        self._task = asyncio.create_task(self._run(), name="arkteos-client")
+
+    async def stop(self) -> None:
+        """Arrête le client, ferme le flux et attend toutes ses tâches."""
+
+        self.running = False
+        self._set_connected(False)
+        await self._set_available(False)
+        await self._close_writer()
+
+        task = self._task
+        self._task = None
+        if task is not None and task is not asyncio.current_task() and not task.done():
+            task.cancel()
+            with suppress(asyncio.CancelledError):
+                await task
+
+    async def wait_until_connected(self, timeout: float | None = None) -> bool:
+        """Attend une connexion établie, avec délai optionnel."""
+
+        if self.connected:
+            return True
+        try:
+            if timeout is None:
+                await self._connected_event.wait()
+            else:
+                await asyncio.wait_for(self._connected_event.wait(), timeout)
+        except TimeoutError:
+            return False
+        return self.connected
+
+    def add_data_callback(self, callback: DataCallback) -> None:
+        """Ajoute un callback de données sans le dupliquer."""
+
+        if callback not in self._data_callbacks:
+            self._data_callbacks.append(callback)
+
+    def remove_data_callback(self, callback: DataCallback) -> None:
+        """Retire un callback de données s'il est enregistré."""
+
+        with suppress(ValueError):
+            self._data_callbacks.remove(callback)
+
+    def add_availability_callback(self, callback: AvailabilityCallback) -> None:
+        """Ajoute un callback de disponibilité sans le dupliquer."""
+
+        if callback not in self._availability_callbacks:
+            self._availability_callbacks.append(callback)
+
+    def remove_availability_callback(self, callback: AvailabilityCallback) -> None:
+        """Retire un callback de disponibilité s'il est enregistré."""
+
+        with suppress(ValueError):
+            self._availability_callbacks.remove(callback)
+
+    async def _run(self) -> None:
+        delay_index = 0
+        try:
+            while self.running:
+                self.connection_attempts += 1
+                try:
+                    reader, writer = await asyncio.open_connection(self.host, self.port)
+                except asyncio.CancelledError:
+                    raise
+                except Exception as error:
+                    self.last_error = error
+                    self._set_connected(False)
+                    await self._set_available(False)
+                    if not await self._wait_before_reconnect(delay_index):
+                        break
+                    delay_index = min(delay_index + 1, len(self.reconnect_delays) - 1)
+                    continue
+
+                self._writer = writer
+                self._set_connected(True)
+                received_valid_frame = await self._read_connection(reader)
+                if received_valid_frame:
+                    delay_index = 0
+
+                self._set_connected(False)
+                await self._set_available(False)
+                await self._close_writer()
+                if not self.running:
+                    break
+                if not await self._wait_before_reconnect(delay_index):
+                    break
+                delay_index = min(delay_index + 1, len(self.reconnect_delays) - 1)
+        except asyncio.CancelledError:
+            raise
+        finally:
+            self._set_connected(False)
+            await self._set_available(False)
+            await self._close_writer()
+
+    async def _wait_before_reconnect(self, delay_index: int) -> bool:
+        if not self.running:
+            return False
+        self.reconnect_count += 1
+        await self._sleep(self.reconnect_delays[delay_index])
+        return self.running
+
+    async def _read_connection(self, reader: asyncio.StreamReader) -> bool:
+        received_valid_frame = False
+        loop = asyncio.get_running_loop()
+        deadline = loop.time() + self.frame_timeout
+
+        while self.running:
+            remaining = deadline - loop.time()
+            if remaining <= 0:
+                await self._set_available(False)
+                deadline = loop.time() + self.frame_timeout
+                remaining = self.frame_timeout
+
+            try:
+                data = await asyncio.wait_for(reader.read(self.read_size), remaining)
+            except asyncio.CancelledError:
+                raise
+            except TimeoutError:
+                await self._set_available(False)
+                deadline = loop.time() + self.frame_timeout
+                continue
+            except Exception as error:
+                self.last_error = error
+                return received_valid_frame
+
+            if not data:
+                return received_valid_frame
+
+            self.bytes_received += len(data)
+            try:
+                raw_frames = self._extractor.feed(data)
+            except Exception as error:
+                self.frames_rejected += 1
+                self.last_error = error
+                continue
+
+            for raw_frame in raw_frames:
+                try:
+                    frame = parse_frame(raw_frame)
+                    filtered = filter_values(frame)
+                except FrameError as error:
+                    self.frames_rejected += 1
+                    self.last_error = error
+                    continue
+
+                received_valid_frame = True
+                deadline = loop.time() + self.frame_timeout
+                await self._accept_frame(frame, filtered)
+
+        return received_valid_frame
+
+    async def _accept_frame(self, frame: ParsedFrame, filtered: FilterResult) -> None:
+        accepted = dict(filtered.accepted)
+        rejected = dict(filtered.rejected)
+        frame_type = accepted["frame_type"]
+        assert isinstance(frame_type, str)
+
+        self.frames_received += 1
+        self.last_valid_frame = frame
+        self.last_frame_type = frame_type
+        if frame_type == "frigo":
+            self.latest_frigo_data = accepted
+        elif frame_type == "regulation":
+            self.latest_regulation_data = accepted
+        else:
+            self.latest_metadata = accepted
+
+        await self._set_available(True)
+        for callback in tuple(self._data_callbacks):
+            await self._invoke_callback(callback, frame_type, dict(accepted), dict(rejected))
+
+    async def _set_available(self, value: bool) -> None:
+        if self.available == value:
+            return
+        self.available = value
+        for callback in tuple(self._availability_callbacks):
+            await self._invoke_callback(callback, value)
+
+    async def _invoke_callback(self, callback: Callable[..., object], *args: object) -> None:
+        try:
+            result = callback(*args)
+            if inspect.isawaitable(result):
+                await result
+        except Exception as error:
+            self.last_error = error
+
+    def _set_connected(self, value: bool) -> None:
+        self.connected = value
+        if value:
+            self._connected_event.set()
+        else:
+            self._connected_event.clear()
+
+    async def _close_writer(self) -> None:
+        writer = self._writer
+        self._writer = None
+        if writer is None:
+            return
+        writer.close()
+        try:
+            await writer.wait_closed()
+        except Exception as error:
+            self.last_error = error

custom_components/arkteos/config_flow.py

@@ -0,0 +1,145 @@
+"""Flux de configuration par interface utilisateur de l'intégration Arkteos."""
+
+from __future__ import annotations
+
+import asyncio
+from typing import Any
+
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.data_entry_flow import FlowResult
+
+from .client import ArkteosClient
+from .const import CONF_HOST, CONF_PORT, DEFAULT_PORT, DOMAIN
+
+
+VALIDATION_TIMEOUT = 10.0
+
+
+class CannotConnect(Exception):
+    """La connexion au proxy a échoué."""
+
+
+class ValidationTimeout(Exception):
+    """Aucune trame valide n'a été reçue dans le délai imparti."""
+
+
+class ArkteosConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Gère la création et la reconfiguration des config entries Arkteos."""
+
+    VERSION = 1
+
+    async def async_step_user(self, user_input: dict[str, Any] | None = None) -> FlowResult:
+        """Affiche et traite le formulaire initial."""
+
+        if user_input is not None:
+            data, errors = await self._async_validate_input(user_input)
+            if not errors:
+                if self._entry_exists(data[CONF_HOST], data[CONF_PORT]):
+                    return self.async_abort(reason="already_configured")
+                await self.async_set_unique_id(self._unique_id(data))
+                self._abort_if_unique_id_configured()
+                try:
+                    await self._async_validate_proxy(data)
+                except CannotConnect:
+                    errors["base"] = "cannot_connect"
+                except ValidationTimeout:
+                    errors["base"] = "timeout"
+                except Exception:
+                    errors["base"] = "unknown"
+                else:
+                    return self.async_create_entry(title=self._title(data), data=data)
+            return self.async_show_form(
+                step_id="user", data_schema=self._schema(data if "data" in locals() else None), errors=errors
+            )
+
+        return self.async_show_form(step_id="user", data_schema=self._schema())
+
+    async def async_step_reconfigure(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Permet la modification de l'hôte et du port d'une entrée existante."""
+
+        entry = self._get_reconfigure_entry()
+        if user_input is not None:
+            data, errors = await self._async_validate_input(user_input)
+            if not errors:
+                if self._entry_exists(data[CONF_HOST], data[CONF_PORT], exclude_entry_id=entry.entry_id):
+                    errors["base"] = "already_configured"
+                else:
+                    try:
+                        await self._async_validate_proxy(data)
+                    except CannotConnect:
+                        errors["base"] = "cannot_connect"
+                    except ValidationTimeout:
+                        errors["base"] = "timeout"
+                    except Exception:
+                        errors["base"] = "unknown"
+                    else:
+                        return self.async_update_reload_and_abort(
+                            entry, data_updates=data, title=self._title(data)
+                        )
+            return self.async_show_form(
+                step_id="reconfigure", data_schema=self._schema(data if "data" in locals() else entry.data), errors=errors
+            )
+
+        return self.async_show_form(step_id="reconfigure", data_schema=self._schema(entry.data))
+
+    async def _async_validate_input(
+        self, user_input: dict[str, Any]
+    ) -> tuple[dict[str, Any], dict[str, str]]:
+        errors: dict[str, str] = {}
+        host = str(user_input.get(CONF_HOST, "")).strip()
+        if not host:
+            errors[CONF_HOST] = "invalid_host"
+        try:
+            port = int(user_input.get(CONF_PORT, DEFAULT_PORT))
+        except (TypeError, ValueError):
+            errors[CONF_PORT] = "invalid_port"
+            port = DEFAULT_PORT
+        if not 1 <= port <= 65535:
+            errors[CONF_PORT] = "invalid_port"
+        return {CONF_HOST: host, CONF_PORT: port}, errors
+
+    async def _async_validate_proxy(self, data: dict[str, Any]) -> None:
+        client = ArkteosClient(data[CONF_HOST], data[CONF_PORT])
+        try:
+            await client.start()
+            if not await client.wait_until_connected(VALIDATION_TIMEOUT):
+                raise CannotConnect
+            deadline = asyncio.get_running_loop().time() + VALIDATION_TIMEOUT
+            while client.last_valid_frame is None:
+                if asyncio.get_running_loop().time() >= deadline:
+                    raise ValidationTimeout
+                if client.last_error is not None and not client.connected:
+                    raise CannotConnect
+                await asyncio.sleep(0.05)
+        finally:
+            await client.stop()
+
+    def _entry_exists(self, host: str, port: int, exclude_entry_id: str | None = None) -> bool:
+        return any(
+            entry.entry_id != exclude_entry_id
+            and entry.data.get(CONF_HOST) == host
+            and entry.data.get(CONF_PORT) == port
+            for entry in self._async_current_entries()
+        )
+
+    @staticmethod
+    def _title(data: dict[str, Any]) -> str:
+        return f"Arkteos {data[CONF_HOST]}:{data[CONF_PORT]}"
+
+    @staticmethod
+    def _unique_id(data: dict[str, Any]) -> str:
+        return f"{data[CONF_HOST]}:{data[CONF_PORT]}"
+
+    @staticmethod
+    def _schema(defaults: dict[str, Any] | None = None) -> vol.Schema:
+        defaults = defaults or {}
+        return vol.Schema(
+            {
+                vol.Required(CONF_HOST, default=defaults.get(CONF_HOST, "")): str,
+                vol.Required(CONF_PORT, default=defaults.get(CONF_PORT, DEFAULT_PORT)): vol.Coerce(int),
+            }
+        )

custom_components/arkteos/const.py

@@ -0,0 +1,11 @@
+"""Constantes de l'intégration Arkteos."""
+
+from homeassistant.const import Platform
+
+
+DOMAIN = "arkteos"
+DEFAULT_PORT = 9641
+CONF_HOST = "host"
+CONF_PORT = "port"
+PLATFORMS: list[Platform] = [Platform.BINARY_SENSOR, Platform.SENSOR]
+RUNTIME_DATA = "runtime_data"

custom_components/arkteos/diagnostics.py

@@ -0,0 +1,126 @@
+"""Diagnostics sans accès réseau pour l'intégration Arkteos."""
+
+from __future__ import annotations
+
+import json
+from collections.abc import Mapping
+from pathlib import Path
+from typing import TYPE_CHECKING, Any
+
+from homeassistant.components.diagnostics import async_redact_data
+
+from . import _get_client
+from .const import CONF_HOST, CONF_PORT, DEFAULT_PORT, DOMAIN
+
+if TYPE_CHECKING:
+    from homeassistant.config_entries import ConfigEntry
+    from homeassistant.core import HomeAssistant
+
+
+_SENSITIVE_KEYS = frozenset({"host", "password", "token"})
+_CLIENT_STATE_ATTRIBUTES = (
+    "available",
+    "running",
+    "connected",
+    "bytes_received",
+    "frames_received",
+    "frames_rejected",
+    "reconnect_count",
+    "last_frame_type",
+)
+_MISSING = object()
+
+
+def _manifest_version() -> str | None:
+    """Retourne la version déclarée sans contacter de ressource externe."""
+
+    try:
+        manifest = json.loads(Path(__file__).with_name("manifest.json").read_text())
+    except (OSError, json.JSONDecodeError):
+        return None
+    version = manifest.get("version")
+    return version if isinstance(version, str) else None
+
+
+def _simple_values(data: object) -> dict[str, str | int | float | bool | None]:
+    """Conserve uniquement les valeurs décodées, simples et non sensibles."""
+
+    if not isinstance(data, dict):
+        return {}
+    result: dict[str, str | int | float | bool | None] = {}
+    for key, value in data.items():
+        if not isinstance(key, str) or key.lower() in _SENSITIVE_KEYS:
+            continue
+        if value is None or isinstance(value, (str, int, float, bool)):
+            result[key] = value
+    return result
+
+
+def _received_data(client: object | None, attribute: str) -> dict[str, Any]:
+    """Prépare une section de données sans bytes, buffer ni objet asyncio."""
+
+    data = getattr(client, attribute, None) if client is not None else None
+    values = _simple_values(data)
+    return {"received": data is not None, "data": values}
+
+
+def _entry_state(entry: ConfigEntry) -> str | None:
+    """Convertit l'état optionnel de l'entrée en valeur sérialisable."""
+
+    state = getattr(entry, "state", None)
+    if state is None:
+        return None
+    value = getattr(state, "value", state)
+    return value if isinstance(value, str) else None
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+) -> dict[str, Any]:
+    """Retourne des diagnostics locaux, redacted et uniquement sérialisables.
+
+    Le client conserve uniquement ``frames_rejected`` de manière agrégée : les
+    valeurs rejetées par champ ne sont donc pas inventées dans ce résultat.
+    """
+
+    entry_data = getattr(entry, "data", {})
+    if not isinstance(entry_data, Mapping):
+        entry_data = {}
+    host = entry_data.get(CONF_HOST)
+    title = getattr(entry, "title", None)
+    if isinstance(title, str) and isinstance(host, str):
+        title = title.replace(host, "**REDACTED**")
+
+    configured = async_redact_data(
+        {
+            CONF_HOST: host,
+            CONF_PORT: entry_data.get(CONF_PORT, DEFAULT_PORT),
+        },
+        [CONF_HOST],
+    )
+    client = _get_client(hass, entry)
+    client_state: dict[str, str | int | float | bool | None] = {}
+    if client is not None:
+        for attribute in _CLIENT_STATE_ATTRIBUTES:
+            value = getattr(client, attribute, _MISSING)
+            if value is _MISSING:
+                continue
+            if value is None or isinstance(value, (str, int, float, bool)):
+                client_state[attribute] = value
+
+    return {
+        "integration": {
+            "domain": DOMAIN,
+            "version": _manifest_version(),
+            "title": title if isinstance(title, str) else None,
+            "config_entry_state": _entry_state(entry),
+            "configuration": configured,
+        },
+        "client": client_state,
+        "received_data": {
+            "metadata": _received_data(client, "latest_metadata"),
+            "frigo": _received_data(client, "latest_frigo_data"),
+            "regulation": _received_data(client, "latest_regulation_data"),
+        },
+    }

custom_components/arkteos/entity.py

@@ -0,0 +1,37 @@
+"""Entités Home Assistant partageant le client Arkteos."""
+
+from __future__ import annotations
+
+from homeassistant.helpers.entity import Entity
+
+from .client import ArkteosClient
+
+
+class ArkteosEntity(Entity):
+    """Base d'entité sans lecture réseau dans ses propriétés."""
+
+    _attr_has_entity_name = True
+
+    def __init__(self, client: ArkteosClient) -> None:
+        self._client = client
+
+    @property
+    def available(self) -> bool:
+        """Reflète la disponibilité déterminée par le client partagé."""
+
+        return self._client.available
+
+    async def async_added_to_hass(self) -> None:
+        """Abonne l'entité aux changements de disponibilité."""
+
+        await super().async_added_to_hass()
+        self._client.add_availability_callback(self._handle_availability)
+
+    async def async_will_remove_from_hass(self) -> None:
+        """Retire le callback avant la destruction de l'entité."""
+
+        self._client.remove_availability_callback(self._handle_availability)
+        await super().async_will_remove_from_hass()
+
+    def _handle_availability(self, _available: bool) -> None:
+        self.async_write_ha_state()

custom_components/arkteos/frame_extractor.py

@@ -0,0 +1,138 @@
+"""Extracteur incrémental des trames REG3 observées sur le flux TCP.
+
+Ce module ne décode aucune valeur métier et ne dépend ni du réseau ni de Home
+Assistant. Les signatures, tailles et cohérences d'en-tête sont limitées à ce
+qui est observé dans ``docs/frame_protocol_analysis.md``.
+"""
+
+from __future__ import annotations
+
+from typing import Final
+
+
+FRAME_SIGNATURE: Final = b"\x55\x00"
+HEADER_MIN_SIZE: Final = 12
+HEADER_LENGTH_OFFSET: Final = 10
+HEADER_SIZE_ADJUSTMENT: Final = 15
+FRAME_TYPE_OFFSET: Final = 8
+
+FRAME_SIZES_BY_TYPE: Final[dict[int, int]] = {
+    0x0C: 95,
+    0x0A: 163,
+    0x0B: 227,
+}
+KNOWN_FRAME_SIZES: Final[frozenset[int]] = frozenset(FRAME_SIZES_BY_TYPE.values())
+
+
+class FrameExtractor:
+    """Assemble des trames complètes depuis des fragments TCP arbitraires."""
+
+    def __init__(self, *, max_buffer_size: int = 4096) -> None:
+        if max_buffer_size < HEADER_MIN_SIZE:
+            raise ValueError(
+                f"max_buffer_size doit être supérieur ou égal à {HEADER_MIN_SIZE}"
+            )
+        self._max_buffer_size = max_buffer_size
+        self._buffer = bytearray()
+
+    @property
+    def buffered_bytes(self) -> bytes:
+        """Retourne une copie immuable des octets en attente."""
+
+        return bytes(self._buffer)
+
+    @property
+    def buffered_size(self) -> int:
+        """Retourne la taille des octets en attente."""
+
+        return len(self._buffer)
+
+    @property
+    def max_buffer_size(self) -> int:
+        """Retourne la limite configurable du tampon persistant."""
+
+        return self._max_buffer_size
+
+    def feed(self, data: bytes) -> list[bytes]:
+        """Ajoute un fragment TCP et retourne les trames complètes extraites.
+
+        Les données entrantes sont ajoutées par blocs bornés afin que le tampon
+        persistant ne dépasse jamais ``max_buffer_size``.
+        """
+
+        if not isinstance(data, bytes):
+            raise TypeError("data doit être de type bytes")
+
+        frames = self._extract_available()
+        offset = 0
+        while offset < len(data):
+            available = self._max_buffer_size - len(self._buffer)
+            if available == 0:
+                before = len(self._buffer)
+                frames.extend(self._extract_available())
+                if len(self._buffer) == before:
+                    # Cette branche ne doit être atteinte qu'avec un en-tête
+                    # incomplet ou invalide ; avancer garantit la progression.
+                    del self._buffer[0]
+                continue
+
+            end = min(offset + available, len(data))
+            self._buffer.extend(data[offset:end])
+            offset = end
+            frames.extend(self._extract_available())
+
+        return frames
+
+    def _extract_available(self) -> list[bytes]:
+        frames: list[bytes] = []
+
+        while True:
+            if len(self._buffer) < len(FRAME_SIGNATURE):
+                return frames
+
+            signature_offset = self._buffer.find(FRAME_SIGNATURE)
+            if signature_offset < 0:
+                self._preserve_possible_split_signature()
+                return frames
+
+            if signature_offset > 0:
+                del self._buffer[:signature_offset]
+
+            if len(self._buffer) < HEADER_MIN_SIZE:
+                return frames
+
+            frame_size = (
+                int.from_bytes(
+                    self._buffer[
+                        HEADER_LENGTH_OFFSET : HEADER_LENGTH_OFFSET + 2
+                    ],
+                    "little",
+                )
+                + HEADER_SIZE_ADJUSTMENT
+            )
+            frame_type = self._buffer[FRAME_TYPE_OFFSET]
+            expected_size = FRAME_SIZES_BY_TYPE.get(frame_type)
+
+            if (
+                frame_size not in KNOWN_FRAME_SIZES
+                or frame_size > self._max_buffer_size
+                or expected_size != frame_size
+            ):
+                # Ne supprimer qu'un octet : une nouvelle signature peut
+                # commencer à l'octet suivant du flux reçu.
+                del self._buffer[0]
+                continue
+
+            if len(self._buffer) < frame_size:
+                return frames
+
+            frames.append(bytes(self._buffer[:frame_size]))
+            del self._buffer[:frame_size]
+
+    def _preserve_possible_split_signature(self) -> None:
+        """Conserve seulement un dernier 0x55 en l'absence de signature."""
+
+        if self._buffer[-1] == FRAME_SIGNATURE[0]:
+            self._buffer[:] = FRAME_SIGNATURE[:1]
+        else:
+            self._buffer.clear()

custom_components/arkteos/manifest.json

@@ -0,0 +1,11 @@
+{
+  "domain": "arkteos",
+  "name": "Arkteos",
+  "config_flow": true,
+  "iot_class": "local_push",
+  "version": "0.1.0",
+  "requirements": [],
+  "documentation": "https://gitea.i-host.fr/raph666/home-assistant-arkteos",
+  "issue_tracker": "https://gitea.i-host.fr/raph666/home-assistant-arkteos/issues",
+  "codeowners": []
+}

custom_components/arkteos/sensor.py

@@ -0,0 +1,396 @@
+"""Capteurs natifs en lecture seule pour les données Arkteos."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Final, Literal
+
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorEntityDescription,
+    SensorStateClass,
+)
+from homeassistant.const import (
+    EntityCategory,
+    PERCENTAGE,
+    REVOLUTIONS_PER_MINUTE,
+    SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
+    UnitOfElectricPotential,
+    UnitOfFrequency,
+    UnitOfPower,
+    UnitOfPressure,
+    UnitOfTemperature,
+    UnitOfTime,
+)
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import _get_client
+from .client import ArkteosClient
+from .const import DOMAIN
+from .entity import ArkteosEntity
+
+
+FRIGO_FRAME_TYPE: Final = "frigo"
+REGULATION_FRAME_TYPE: Final = "regulation"
+
+FRIGO_STATUS_OPTIONS: Final = (
+    "Arret",
+    "Refroidissement",
+    "Chauffage",
+    "Degivrage",
+    "Inconnu",
+)
+PAC_STATUS_OPTIONS: Final = (
+    "Arret",
+    "Attente",
+    "Chaud",
+    "Froid",
+    "Hors Gel",
+    "Ext Chaud",
+    "Ext Froid",
+    "Chaud Froid",
+    "ECS",
+    "Piscine",
+    "Inconnu",
+)
+
+
+@dataclass(frozen=True, kw_only=True)
+class ArkteosSensorDescription(SensorEntityDescription):
+    """Description d'un capteur et du type de trame qui l'alimente."""
+
+    frame_type: Literal["frigo", "regulation"]
+
+
+FRIGO_SENSORS: Final[tuple[ArkteosSensorDescription, ...]] = (
+    ArkteosSensorDescription(
+        key="exterieur_temp",
+        translation_key="exterieur_temp",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+        suggested_display_precision=1,
+    ),
+    ArkteosSensorDescription(
+        key="nb_degivrages",
+        translation_key="nb_degivrages",
+        frame_type=FRIGO_FRAME_TYPE,
+        state_class=SensorStateClass.TOTAL_INCREASING,
+    ),
+    ArkteosSensorDescription(
+        key="temps_compresseur",
+        translation_key="temps_compresseur",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.DURATION,
+        native_unit_of_measurement=UnitOfTime.HOURS,
+        state_class=SensorStateClass.TOTAL_INCREASING,
+    ),
+    ArkteosSensorDescription(
+        key="nb_cycles_compresseur",
+        translation_key="nb_cycles_compresseur",
+        frame_type=FRIGO_FRAME_TYPE,
+        state_class=SensorStateClass.TOTAL_INCREASING,
+    ),
+    ArkteosSensorDescription(
+        key="freq_comp_actuelle",
+        translation_key="freq_comp_actuelle",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.FREQUENCY,
+        native_unit_of_measurement=UnitOfFrequency.HERTZ,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="freq_comp_cible",
+        translation_key="freq_comp_cible",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.FREQUENCY,
+        native_unit_of_measurement=UnitOfFrequency.HERTZ,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="fan_speed_evaporator_1",
+        translation_key="fan_speed_evaporator_1",
+        frame_type=FRIGO_FRAME_TYPE,
+        native_unit_of_measurement=REVOLUTIONS_PER_MINUTE,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="dc_voltage",
+        translation_key="dc_voltage",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.VOLTAGE,
+        native_unit_of_measurement=UnitOfElectricPotential.VOLT,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="statut_frigo_s",
+        translation_key="statut_frigo_s",
+        frame_type=FRIGO_FRAME_TYPE,
+        device_class=SensorDeviceClass.ENUM,
+        options=FRIGO_STATUS_OPTIONS,
+    ),
+    ArkteosSensorDescription(
+        key="statut_frigo",
+        translation_key="statut_frigo",
+        frame_type=FRIGO_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    ArkteosSensorDescription(
+        key="active_error_fri",
+        translation_key="active_error_fri",
+        frame_type=FRIGO_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
+)
+
+REGULATION_SENSORS: Final[tuple[ArkteosSensorDescription, ...]] = (
+    ArkteosSensorDescription(
+        key="puissance_inst_produite",
+        translation_key="puissance_inst_produite",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.POWER,
+        native_unit_of_measurement=UnitOfPower.WATT,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="puissance_inst_consommee",
+        translation_key="puissance_inst_consommee",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.POWER,
+        native_unit_of_measurement=UnitOfPower.WATT,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="temps_mise_sous_tension",
+        translation_key="temps_mise_sous_tension",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.DURATION,
+        native_unit_of_measurement=UnitOfTime.HOURS,
+        state_class=SensorStateClass.TOTAL_INCREASING,
+    ),
+    ArkteosSensorDescription(
+        key="modele_pac_s",
+        translation_key="modele_pac_s",
+        frame_type=REGULATION_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
+    ArkteosSensorDescription(
+        key="modele_pac",
+        translation_key="modele_pac",
+        frame_type=REGULATION_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_temp_eau_aller_consigne",
+        translation_key="primaire_temp_eau_aller_consigne",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_temp_eau_aller",
+        translation_key="primaire_temp_eau_aller",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_temp_eau_retour",
+        translation_key="primaire_temp_eau_retour",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_debit_eau",
+        translation_key="primaire_debit_eau",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.VOLUME_FLOW_RATE,
+        native_unit_of_measurement="L/h",
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_pression",
+        translation_key="primaire_pression",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.PRESSURE,
+        native_unit_of_measurement=UnitOfPressure.BAR,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="primaire_circulateur_consigne",
+        translation_key="primaire_circulateur_consigne",
+        frame_type=REGULATION_FRAME_TYPE,
+        native_unit_of_measurement=PERCENTAGE,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="zone1_temp_interieur",
+        translation_key="zone1_temp_interieur",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_registry_enabled_default=False,
+    ),
+    ArkteosSensorDescription(
+        key="zone1_consigne",
+        translation_key="zone1_consigne",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_registry_enabled_default=False,
+    ),
+    ArkteosSensorDescription(
+        key="ecs_temp_eau_milieu",
+        translation_key="ecs_temp_eau_milieu",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="ecs_temp_eau_bas",
+        translation_key="ecs_temp_eau_bas",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="ecs_consigne",
+        translation_key="ecs_consigne",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        state_class=SensorStateClass.MEASUREMENT,
+    ),
+    ArkteosSensorDescription(
+        key="nb_cycles_compresseur_reg",
+        translation_key="nb_cycles_compresseur_reg",
+        frame_type=REGULATION_FRAME_TYPE,
+        state_class=SensorStateClass.TOTAL_INCREASING,
+    ),
+    ArkteosSensorDescription(
+        key="statut_pac_s",
+        translation_key="statut_pac_s",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.ENUM,
+        options=PAC_STATUS_OPTIONS,
+    ),
+    ArkteosSensorDescription(
+        key="statut_pac",
+        translation_key="statut_pac",
+        frame_type=REGULATION_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    ArkteosSensorDescription(
+        key="active_error_reg",
+        translation_key="active_error_reg",
+        frame_type=REGULATION_FRAME_TYPE,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
+    ArkteosSensorDescription(
+        key="signal_rf_sonde_1",
+        translation_key="signal_rf_sonde_1",
+        frame_type=REGULATION_FRAME_TYPE,
+        device_class=SensorDeviceClass.SIGNAL_STRENGTH,
+        native_unit_of_measurement=SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
+)
+
+SENSOR_DESCRIPTIONS: Final = FRIGO_SENSORS + REGULATION_SENSORS
+
+
+async def async_setup_entry(hass, entry, async_add_entities: AddEntitiesCallback) -> None:
+    """Ajoute les capteurs alimentés par le client partagé de l'entrée."""
+
+    client = _get_client(hass, entry)
+    if client is None:
+        return
+    async_add_entities(ArkteosSensor(client, description) for description in SENSOR_DESCRIPTIONS)
+
+
+class ArkteosSensor(ArkteosEntity, SensorEntity):
+    """Expose une valeur validée issue d'un seul type de trame Arkteos."""
+
+    _attr_should_poll = False
+
+    def __init__(self, client: ArkteosClient, description: ArkteosSensorDescription) -> None:
+        super().__init__(client)
+        self.entity_description = description
+        self._attr_unique_id = f"arkteos_zuran4_{description.key}"
+        latest_data = self._latest_data()
+        self._has_received_frame = latest_data is not None
+        self._last_value = latest_data.get(description.key) if latest_data is not None else None
+
+    @property
+    def available(self) -> bool:
+        """N'est disponible qu'après la première trame de son propre type."""
+
+        return self._client.available and self._has_received_frame
+
+    @property
+    def native_value(self) -> int | float | str | None:
+        """Retourne la dernière valeur acceptée, sans accès réseau."""
+
+        return self._last_value
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        """Regroupe tous les capteurs sous l'unique PAC Arkteos."""
+
+        regulation_data = self._client.latest_regulation_data
+        model = "Zuran 4"
+        if regulation_data is not None:
+            detected_model = regulation_data.get("modele_pac_s")
+            if isinstance(detected_model, str):
+                model = detected_model
+        return DeviceInfo(
+            identifiers={(DOMAIN, "arkteos_zuran4")},
+            manufacturer="Arkteos",
+            model=model,
+            name="PAC Arkteos Zuran 4",
+        )
+
+    async def async_added_to_hass(self) -> None:
+        """Abonne le capteur aux seules données transmises par le client."""
+
+        await super().async_added_to_hass()
+        self._client.add_data_callback(self._handle_data)
+
+    async def async_will_remove_from_hass(self) -> None:
+        """Désabonne le callback de données avant la destruction."""
+
+        self._client.remove_data_callback(self._handle_data)
+        await super().async_will_remove_from_hass()
+
+    def _latest_data(self) -> dict[str, int | float | str] | None:
+        if self.entity_description.frame_type == FRIGO_FRAME_TYPE:
+            return self._client.latest_frigo_data
+        return self._client.latest_regulation_data
+
+    def _handle_data(
+        self,
+        frame_type: str,
+        data: dict[str, int | float | str],
+        _rejected: dict[str, int | float],
+    ) -> None:
+        if frame_type != self.entity_description.frame_type:
+            return
+        self._has_received_frame = True
+        if self.entity_description.key in data:
+            self._last_value = data[self.entity_description.key]
+        self.async_write_ha_state()

custom_components/arkteos/strings.json

@@ -0,0 +1,75 @@
+{
+  "title": "Arkteos",
+  "config": {
+    "step": {
+      "user": {
+        "title": "Configurer Arkteos",
+        "description": "Renseignez le proxy TCP Arkteos.",
+        "data": {
+          "host": "Hôte du proxy",
+          "port": "Port du proxy"
+        }
+      },
+      "reconfigure": {
+        "title": "Reconfigurer Arkteos",
+        "description": "Modifiez l'hôte ou le port du proxy.",
+        "data": {
+          "host": "Hôte du proxy",
+          "port": "Port du proxy"
+        }
+      }
+    },
+    "error": {
+      "cannot_connect": "Impossible de se connecter au proxy.",
+      "invalid_host": "L'hôte est invalide.",
+      "invalid_port": "Le port doit être compris entre 1 et 65535.",
+      "timeout": "Aucune trame valide n'a été reçue avant expiration du délai.",
+      "unknown": "Erreur inattendue."
+    },
+    "abort": {
+      "already_configured": "Ce proxy est déjà configuré.",
+      "reconfigure_successful": "Arkteos a été reconfiguré."
+    }
+  },
+  "entity": {
+    "binary_sensor": {
+      "connection": {
+        "name": "PAC connectée"
+      }
+    },
+    "sensor": {
+      "exterieur_temp": {"name": "Température extérieure"},
+      "nb_degivrages": {"name": "Nombre de dégivrages"},
+      "temps_compresseur": {"name": "Temps fonctionnement compresseur"},
+      "nb_cycles_compresseur": {"name": "Nombre de cycles compresseur"},
+      "freq_comp_actuelle": {"name": "Fréquence compresseur actuelle"},
+      "freq_comp_cible": {"name": "Fréquence compresseur cible"},
+      "fan_speed_evaporator_1": {"name": "Vitesse ventilateur groupe frigo"},
+      "dc_voltage": {"name": "Tension DC compresseur"},
+      "statut_frigo_s": {"name": "Statut frigorifique"},
+      "statut_frigo": {"name": "Code statut frigorifique"},
+      "active_error_fri": {"name": "Erreur active frigorifique"},
+      "puissance_inst_produite": {"name": "Puissance instantanée produite"},
+      "puissance_inst_consommee": {"name": "Puissance instantanée consommée"},
+      "temps_mise_sous_tension": {"name": "Temps mise sous tension"},
+      "modele_pac_s": {"name": "Modèle PAC"},
+      "modele_pac": {"name": "Code modèle PAC"},
+      "primaire_temp_eau_aller_consigne": {"name": "Consigne départ eau primaire"},
+      "primaire_temp_eau_aller": {"name": "Température eau primaire aller"},
+      "primaire_temp_eau_retour": {"name": "Température eau primaire retour"},
+      "primaire_debit_eau": {"name": "Débit eau primaire"},
+      "primaire_pression": {"name": "Pression eau primaire"},
+      "primaire_circulateur_consigne": {"name": "Circulateur primaire"},
+      "zone1_temp_interieur": {"name": "Température intérieure zone 1"},
+      "zone1_consigne": {"name": "Consigne température zone 1"},
+      "ecs_temp_eau_milieu": {"name": "Température ballon ECS milieu"},
+      "ecs_temp_eau_bas": {"name": "Température ballon ECS bas"},
+      "ecs_consigne": {"name": "Consigne ECS"},
+      "nb_cycles_compresseur_reg": {"name": "Cycles compresseur régulation"},
+      "statut_pac_s": {"name": "Statut PAC"},
+      "statut_pac": {"name": "Code statut PAC"},
+      "active_error_reg": {"name": "Erreur active régulation"},
+      "signal_rf_sonde_1": {"name": "Signal RF sonde zone 1"}
+    }
+  }
+}

custom_components/arkteos/translations/fr.json

@@ -0,0 +1,75 @@
+{
+  "title": "Arkteos",
+  "config": {
+    "step": {
+      "user": {
+        "title": "Configurer Arkteos",
+        "description": "Renseignez le proxy TCP Arkteos.",
+        "data": {
+          "host": "Hôte du proxy",
+          "port": "Port du proxy"
+        }
+      },
+      "reconfigure": {
+        "title": "Reconfigurer Arkteos",
+        "description": "Modifiez l'hôte ou le port du proxy.",
+        "data": {
+          "host": "Hôte du proxy",
+          "port": "Port du proxy"
+        }
+      }
+    },
+    "error": {
+      "cannot_connect": "Impossible de se connecter au proxy.",
+      "invalid_host": "L'hôte est invalide.",
+      "invalid_port": "Le port doit être compris entre 1 et 65535.",
+      "timeout": "Aucune trame valide n'a été reçue avant expiration du délai.",
+      "unknown": "Erreur inattendue."
+    },
+    "abort": {
+      "already_configured": "Ce proxy est déjà configuré.",
+      "reconfigure_successful": "Arkteos a été reconfiguré."
+    }
+  },
+  "entity": {
+    "binary_sensor": {
+      "connection": {
+        "name": "PAC connectée"
+      }
+    },
+    "sensor": {
+      "exterieur_temp": {"name": "Température extérieure"},
+      "nb_degivrages": {"name": "Nombre de dégivrages"},
+      "temps_compresseur": {"name": "Temps fonctionnement compresseur"},
+      "nb_cycles_compresseur": {"name": "Nombre de cycles compresseur"},
+      "freq_comp_actuelle": {"name": "Fréquence compresseur actuelle"},
+      "freq_comp_cible": {"name": "Fréquence compresseur cible"},
+      "fan_speed_evaporator_1": {"name": "Vitesse ventilateur groupe frigo"},
+      "dc_voltage": {"name": "Tension DC compresseur"},
+      "statut_frigo_s": {"name": "Statut frigorifique"},
+      "statut_frigo": {"name": "Code statut frigorifique"},
+      "active_error_fri": {"name": "Erreur active frigorifique"},
+      "puissance_inst_produite": {"name": "Puissance instantanée produite"},
+      "puissance_inst_consommee": {"name": "Puissance instantanée consommée"},
+      "temps_mise_sous_tension": {"name": "Temps mise sous tension"},
+      "modele_pac_s": {"name": "Modèle PAC"},
+      "modele_pac": {"name": "Code modèle PAC"},
+      "primaire_temp_eau_aller_consigne": {"name": "Consigne départ eau primaire"},
+      "primaire_temp_eau_aller": {"name": "Température eau primaire aller"},
+      "primaire_temp_eau_retour": {"name": "Température eau primaire retour"},
+      "primaire_debit_eau": {"name": "Débit eau primaire"},
+      "primaire_pression": {"name": "Pression eau primaire"},
+      "primaire_circulateur_consigne": {"name": "Circulateur primaire"},
+      "zone1_temp_interieur": {"name": "Température intérieure zone 1"},
+      "zone1_consigne": {"name": "Consigne température zone 1"},
+      "ecs_temp_eau_milieu": {"name": "Température ballon ECS milieu"},
+      "ecs_temp_eau_bas": {"name": "Température ballon ECS bas"},
+      "ecs_consigne": {"name": "Consigne ECS"},
+      "nb_cycles_compresseur_reg": {"name": "Cycles compresseur régulation"},
+      "statut_pac_s": {"name": "Statut PAC"},
+      "statut_pac": {"name": "Code statut PAC"},
+      "active_error_reg": {"name": "Erreur active régulation"},
+      "signal_rf_sonde_1": {"name": "Signal RF sonde zone 1"}
+    }
+  }
+}

hacs.json

@@ -0,0 +1,4 @@
+{
+  "name": "Arkteos",
+  "render_readme": true
+}

pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+asyncio_mode = auto
+asyncio_default_fixture_loop_scope = function

requirements_test.txt

@@ -0,0 +1 @@
+pytest-homeassistant-custom-component==0.13.205

tests/test_binary_sensor.py

@@ -0,0 +1,69 @@
+"""Tests de l'unique binary sensor Arkteos."""
+
+from __future__ import annotations
+
+from unittest.mock import Mock
+
+from custom_components.arkteos.binary_sensor import ArkteosConnectionBinarySensor
+from custom_components.arkteos.const import DOMAIN
+
+
+class FakeClient:
+    def __init__(self, available: bool = False) -> None:
+        self.available = available
+        self.callbacks: list[object] = []
+
+    def add_availability_callback(self, callback) -> None:
+        self.callbacks.append(callback)
+
+    def remove_availability_callback(self, callback) -> None:
+        self.callbacks.remove(callback)
+
+
+def test_binary_sensor_is_created() -> None:
+    assert ArkteosConnectionBinarySensor(FakeClient()) is not None
+
+
+def test_unique_id_is_stable() -> None:
+    assert ArkteosConnectionBinarySensor(FakeClient()).unique_id == "arkteos_zuran4_connection"
+
+
+def test_device_info_is_correct() -> None:
+    info = ArkteosConnectionBinarySensor(FakeClient()).device_info
+    assert info["identifiers"] == {(DOMAIN, "arkteos_zuran4")}
+    assert info["manufacturer"] == "Arkteos"
+    assert info["model"] == "Zuran 4"
+
+
+def test_is_on_when_client_is_available() -> None:
+    assert ArkteosConnectionBinarySensor(FakeClient(True)).is_on
+
+
+def test_is_off_when_client_is_unavailable() -> None:
+    assert not ArkteosConnectionBinarySensor(FakeClient(False)).is_on
+
+
+def test_availability_callback_writes_state() -> None:
+    client = FakeClient()
+    entity = ArkteosConnectionBinarySensor(client)
+    entity.async_write_ha_state = Mock()
+    entity._handle_availability(True)
+    entity.async_write_ha_state.assert_called_once()
+
+
+def test_callback_is_removed_before_entity_removal() -> None:
+    client = FakeClient()
+    entity = ArkteosConnectionBinarySensor(client)
+    client.add_availability_callback(entity._handle_availability)
+    client.remove_availability_callback(entity._handle_availability)
+    assert client.callbacks == []
+
+
+def test_no_polling_method_is_declared() -> None:
+    entity = ArkteosConnectionBinarySensor(FakeClient())
+    assert not hasattr(entity, "async_update")
+
+
+def test_binary_sensor_is_read_only() -> None:
+    source = ArkteosConnectionBinarySensor.__module__
+    assert source == "custom_components.arkteos.binary_sensor"

tests/test_client.py

@@ -0,0 +1,523 @@
+"""Tests sans réseau réel du client TCP asynchrone Arkteos."""
+
+import asyncio
+from collections import deque
+from pathlib import Path
+from typing import Deque
+
+import pytest
+
+from custom_components.arkteos.client import ArkteosClient, DEFAULT_PROXY_PORT
+
+
+FIXTURES_PATH = Path(__file__).with_name("fixtures")
+
+
+class FakeWriter:
+    def __init__(self) -> None:
+        self.closed = False
+        self.wait_closed_calls = 0
+
+    def close(self) -> None:
+        self.closed = True
+
+    async def wait_closed(self) -> None:
+        self.wait_closed_calls += 1
+
+
+class ControlledReader:
+    def __init__(self, chunks: list[bytes] | None = None) -> None:
+        self._chunks: Deque[bytes] = deque(chunks or [])
+        self._data_ready = asyncio.Event()
+        if self._chunks:
+            self._data_ready.set()
+
+    def push(self, data: bytes) -> None:
+        self._chunks.append(data)
+        self._data_ready.set()
+
+    async def read(self, _size: int) -> bytes:
+        while not self._chunks:
+            await self._data_ready.wait()
+            self._data_ready.clear()
+        return self._chunks.popleft()
+
+
+def _load_frames() -> dict[str, bytes]:
+    return {
+        "metadata": (FIXTURES_PATH / "metadata_95.bin").read_bytes(),
+        "frigo": (FIXTURES_PATH / "frigo_163.bin").read_bytes(),
+        "regulation": (FIXTURES_PATH / "regulation_227.bin").read_bytes(),
+    }
+
+
+async def _wait_for(predicate: object, attempts: int = 200) -> None:
+    for _ in range(attempts):
+        if callable(predicate) and predicate():
+            return
+        await asyncio.sleep(0.001)
+    raise AssertionError("condition asynchrone non atteinte")
+
+
+def _connection_factory(
+    monkeypatch: pytest.MonkeyPatch,
+    outcomes: list[tuple[ControlledReader, FakeWriter] | Exception],
+) -> None:
+    pending = deque(outcomes)
+
+    async def open_connection(_host: str, _port: int) -> tuple[ControlledReader, FakeWriter]:
+        if not pending:
+            raise ConnectionRefusedError("aucune connexion factice disponible")
+        outcome = pending.popleft()
+        if isinstance(outcome, Exception):
+            raise outcome
+        return outcome
+
+    monkeypatch.setattr(asyncio, "open_connection", open_connection)
+
+
+def test_default_port() -> None:
+    assert ArkteosClient("proxy.example").port == DEFAULT_PROXY_PORT
+
+
+def test_successful_connection(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        reader = ControlledReader()
+        writer = FakeWriter()
+        _connection_factory(monkeypatch, [(reader, writer)])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        assert await client.wait_until_connected(0.1)
+        await client.stop()
+        assert writer.closed
+
+    asyncio.run(scenario())
+
+
+def test_connection_refused(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(monkeypatch, [ConnectionRefusedError("refus")])
+
+        async def pause(_delay: float) -> None:
+            await asyncio.sleep(0)
+
+        client = ArkteosClient("proxy.example", reconnect_delays=(1,), sleep=pause)
+        await client.start()
+        await _wait_for(lambda: client.connection_attempts >= 1)
+        await client.stop()
+        assert not client.connected
+        assert isinstance(client.last_error, ConnectionRefusedError)
+
+    asyncio.run(scenario())
+
+
+def test_progressive_reconnection(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(
+            monkeypatch,
+            [ConnectionRefusedError("1"), ConnectionRefusedError("2"), ConnectionRefusedError("3")],
+        )
+        delays: list[float] = []
+
+        async def pause(delay: float) -> None:
+            delays.append(delay)
+            await asyncio.sleep(0)
+
+        client = ArkteosClient(
+            "proxy.example", reconnect_delays=(1, 2, 5), sleep=pause
+        )
+        await client.start()
+        await _wait_for(lambda: len(delays) >= 3)
+        await client.stop()
+        assert delays[:3] == [1, 2, 5]
+        assert client.reconnect_count >= 3
+
+    asyncio.run(scenario())
+
+
+def test_complete_frame_read(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        metadata = _load_frames()["metadata"]
+        reader = ControlledReader([metadata])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 1)
+        assert client.last_frame_type == "metadata"
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_fragmented_read(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        frigo = _load_frames()["frigo"]
+        reader = ControlledReader([frigo[:70], frigo[70:]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 1)
+        assert client.latest_frigo_data is not None
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_multiple_frames_in_one_read(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        frames = _load_frames()
+        reader = ControlledReader([frames["metadata"] + frames["frigo"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 2)
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_metadata_data(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        reader = ControlledReader([_load_frames()["metadata"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.latest_metadata is not None)
+        assert client.latest_metadata == {"frame_type": "metadata"}
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_frigo_data(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        reader = ControlledReader([_load_frames()["frigo"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.latest_frigo_data is not None)
+        assert client.latest_frigo_data["frame_type"] == "frigo"
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_regulation_data(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        reader = ControlledReader([_load_frames()["regulation"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.latest_regulation_data is not None)
+        assert client.latest_regulation_data["frame_type"] == "regulation"
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_invalid_frame_is_rejected_without_stopping(monkeypatch: pytest.MonkeyPatch) -> None:
+    class InvalidExtractor:
+        def feed(self, _data: bytes) -> list[bytes]:
+            return [b"invalid"]
+
+    async def scenario() -> None:
+        reader = ControlledReader([b"source"])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client._extractor = InvalidExtractor()  # type: ignore[assignment]
+        await client.start()
+        await _wait_for(lambda: client.frames_rejected == 1)
+        assert client.running
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_bytes_received_counter(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        metadata = _load_frames()["metadata"]
+        reader = ControlledReader([metadata])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.bytes_received == len(metadata))
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_frames_received_counter(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        frames = _load_frames()
+        reader = ControlledReader([frames["frigo"] + frames["regulation"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 2)
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_frames_rejected_counter(monkeypatch: pytest.MonkeyPatch) -> None:
+    class RaisingExtractor:
+        def feed(self, _data: bytes) -> list[bytes]:
+            raise ValueError("rejet")
+
+    async def scenario() -> None:
+        reader = ControlledReader([b"source"])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client._extractor = RaisingExtractor()  # type: ignore[assignment]
+        await client.start()
+        await _wait_for(lambda: client.frames_rejected == 1)
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_latest_data_updates(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        frames = _load_frames()
+        reader = ControlledReader(
+            [frames["metadata"] + frames["frigo"] + frames["regulation"]]
+        )
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 3)
+        assert client.last_frame_type == "regulation"
+        assert client.latest_metadata is not None
+        assert client.latest_frigo_data is not None
+        assert client.latest_regulation_data is not None
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_synchronous_data_callback(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        received: list[str] = []
+        reader = ControlledReader([_load_frames()["frigo"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client.add_data_callback(lambda frame_type, _accepted, _rejected: received.append(frame_type))
+        await client.start()
+        await _wait_for(lambda: received == ["frigo"])
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_asynchronous_data_callback(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        received: list[str] = []
+
+        async def callback(frame_type: str, _accepted: dict[str, object], _rejected: dict[str, object]) -> None:
+            received.append(frame_type)
+
+        reader = ControlledReader([_load_frames()["regulation"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client.add_data_callback(callback)
+        await client.start()
+        await _wait_for(lambda: received == ["regulation"])
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_callback_exception_does_not_stop_client(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        def callback(_frame_type: str, _accepted: object, _rejected: object) -> None:
+            raise RuntimeError("callback")
+
+        reader = ControlledReader([_load_frames()["metadata"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client.add_data_callback(callback)
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 1)
+        assert client.running
+        assert isinstance(client.last_error, RuntimeError)
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_availability_true_after_valid_frame(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        states: list[bool] = []
+        reader = ControlledReader([_load_frames()["metadata"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        client.add_availability_callback(states.append)
+        await client.start()
+        await _wait_for(lambda: client.available)
+        assert states == [True]
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_availability_false_after_timeout(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        states: list[bool] = []
+        reader = ControlledReader([_load_frames()["metadata"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example", frame_timeout=0.01)
+        client.add_availability_callback(states.append)
+        await client.start()
+        await _wait_for(lambda: states == [True, False])
+        assert not client.available
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_availability_restored_after_new_frame(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        states: list[bool] = []
+        frames = _load_frames()
+        reader = ControlledReader([frames["metadata"]])
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example", frame_timeout=0.01)
+        client.add_availability_callback(states.append)
+        await client.start()
+        await _wait_for(lambda: states == [True, False])
+        reader.push(frames["frigo"])
+        await _wait_for(lambda: states == [True, False, True])
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_remote_disconnection(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        writer = FakeWriter()
+        reader = ControlledReader([b""])
+        _connection_factory(monkeypatch, [(reader, writer), ConnectionRefusedError("fin")])
+
+        async def pause(_delay: float) -> None:
+            await asyncio.sleep(0)
+
+        client = ArkteosClient("proxy.example", reconnect_delays=(1,), sleep=pause)
+        await client.start()
+        await _wait_for(lambda: writer.closed)
+        assert not client.connected
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_writer_is_closed(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        writer = FakeWriter()
+        _connection_factory(monkeypatch, [(ControlledReader(), writer)])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await client.wait_until_connected(0.1)
+        await client.stop()
+        assert writer.closed
+        assert writer.wait_closed_calls == 1
+
+    asyncio.run(scenario())
+
+
+def test_stop_during_reconnect_wait(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(monkeypatch, [ConnectionRefusedError("refus")])
+        sleeping = asyncio.Event()
+
+        async def pause(_delay: float) -> None:
+            sleeping.set()
+            await asyncio.Event().wait()
+
+        client = ArkteosClient("proxy.example", sleep=pause)
+        await client.start()
+        await _wait_for(sleeping.is_set)
+        await client.stop()
+        assert not client.running
+
+    asyncio.run(scenario())
+
+
+def test_stop_during_read(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        writer = FakeWriter()
+        _connection_factory(monkeypatch, [(ControlledReader(), writer)])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await client.wait_until_connected(0.1)
+        await client.stop()
+        assert writer.closed
+        assert not client.connected
+
+    asyncio.run(scenario())
+
+
+def test_double_start_does_not_create_two_tasks(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(monkeypatch, [(ControlledReader(), FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        task = client._task
+        await client.start()
+        assert client._task is task
+        await client.stop()
+
+    asyncio.run(scenario())
+
+
+def test_double_stop_is_safe(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(monkeypatch, [(ControlledReader(), FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await client.stop()
+        await client.stop()
+        assert not client.running
+
+    asyncio.run(scenario())
+
+
+def test_client_has_no_socket_write_operations(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        writer = FakeWriter()
+        _connection_factory(monkeypatch, [(ControlledReader([_load_frames()["metadata"]]), writer)])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 1)
+        await client.stop()
+        assert not hasattr(writer, "write")
+
+    asyncio.run(scenario())
+
+
+def test_no_client_task_remains_after_stop(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        _connection_factory(monkeypatch, [(ControlledReader(), FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        task = client._task
+        await client.stop()
+        assert client._task is None
+        assert task is not None and task.done()
+
+    asyncio.run(scenario())
+
+
+def test_all_real_fixtures(monkeypatch: pytest.MonkeyPatch) -> None:
+    async def scenario() -> None:
+        frames = _load_frames()
+        reader = ControlledReader(
+            [frames["metadata"] + frames["frigo"] + frames["regulation"]]
+        )
+        _connection_factory(monkeypatch, [(reader, FakeWriter())])
+        client = ArkteosClient("proxy.example")
+        await client.start()
+        await _wait_for(lambda: client.frames_received == 3)
+        assert client.last_frame_type == "regulation"
+        await client.stop()
+
+    asyncio.run(scenario())

tests/test_config_flow.py

@@ -0,0 +1,199 @@
+"""Tests hors ligne du flux de configuration Arkteos."""
+
+from __future__ import annotations
+
+from unittest.mock import AsyncMock, Mock
+
+import pytest
+from homeassistant.config_entries import SOURCE_RECONFIGURE, SOURCE_USER
+from homeassistant.data_entry_flow import FlowResultType
+from pytest_homeassistant_custom_component.common import MockConfigEntry
+
+from custom_components.arkteos.const import CONF_HOST, CONF_PORT, DEFAULT_PORT, DOMAIN
+
+
+pytestmark = pytest.mark.usefixtures("enable_custom_integrations")
+
+
+class FakeClient:
+    """Client factice pour valider le flux sans ouvrir de socket."""
+
+    connected_result = True
+    valid_frame = True
+    instances: list["FakeClient"] = []
+
+    def __init__(self, _host: str, _port: int) -> None:
+        self.connected = False
+        self.last_valid_frame = None
+        self.last_error = None
+        self.started = False
+        self.stopped = False
+        self.__class__.instances.append(self)
+
+    async def start(self) -> None:
+        self.started = True
+        self.connected = self.__class__.connected_result
+        if self.__class__.valid_frame:
+            self.last_valid_frame = object()
+
+    async def stop(self) -> None:
+        self.stopped = True
+
+    async def wait_until_connected(self, _timeout: float | None = None) -> bool:
+        return self.__class__.connected_result
+
+
+@pytest.fixture(autouse=True)
+def mock_client(monkeypatch: pytest.MonkeyPatch) -> None:
+    from custom_components.arkteos import config_flow
+
+    FakeClient.connected_result = True
+    FakeClient.valid_frame = True
+    FakeClient.instances.clear()
+    monkeypatch.setattr(config_flow, "ArkteosClient", FakeClient)
+
+
+async def _start_user_flow(hass):
+    return await hass.config_entries.flow.async_init(DOMAIN, context={"source": SOURCE_USER})
+
+
+async def test_user_form_is_shown(hass) -> None:
+    result = await _start_user_flow(hass)
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+
+async def test_default_port_is_9641(hass) -> None:
+    result = await _start_user_flow(hass)
+    assert result["data_schema"]({CONF_HOST: "proxy.local"})[CONF_PORT] == DEFAULT_PORT
+
+
+async def test_empty_host_is_refused(hass) -> None:
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["errors"][CONF_HOST] == "invalid_host"
+
+
+async def test_port_zero_is_refused(hass) -> None:
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: 0}
+    )
+    assert result["errors"][CONF_PORT] == "invalid_port"
+
+
+async def test_port_above_range_is_refused(hass) -> None:
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: 65536}
+    )
+    assert result["errors"][CONF_PORT] == "invalid_port"
+
+
+async def test_cannot_connect_is_reported(hass) -> None:
+    FakeClient.connected_result = False
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["errors"]["base"] == "cannot_connect"
+    assert FakeClient.instances[-1].stopped
+
+
+async def test_validation_timeout_is_reported(hass, monkeypatch: pytest.MonkeyPatch) -> None:
+    from custom_components.arkteos import config_flow
+
+    FakeClient.valid_frame = False
+    monkeypatch.setattr(config_flow, "VALIDATION_TIMEOUT", 0.001)
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["errors"]["base"] == "timeout"
+    assert FakeClient.instances[-1].stopped
+
+
+async def test_connection_and_valid_frame_create_entry(hass) -> None:
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["title"] == "Arkteos proxy.local:9641"
+
+
+async def test_created_entry_contains_host_and_port(hass) -> None:
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: 9999}
+    )
+    assert result["data"] == {CONF_HOST: "proxy.local", CONF_PORT: 9999}
+
+
+async def test_duplicate_host_and_port_are_refused(hass) -> None:
+    entry = MockConfigEntry(domain=DOMAIN, data={CONF_HOST: "proxy.local", CONF_PORT: DEFAULT_PORT})
+    entry.add_to_hass(hass)
+    result = await _start_user_flow(hass)
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "proxy.local", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+
+
+async def test_reconfigure_succeeds(hass, monkeypatch: pytest.MonkeyPatch) -> None:
+    from custom_components.arkteos import config_flow
+
+    entry = MockConfigEntry(domain=DOMAIN, data={CONF_HOST: "old.local", CONF_PORT: DEFAULT_PORT})
+    entry.add_to_hass(hass)
+    update_entry = Mock(wraps=hass.config_entries.async_update_entry)
+    reload_entry = AsyncMock(return_value=True)
+
+    def create_fake_client(host: str, port: int) -> FakeClient:
+        client = FakeClient(host, port)
+        client.wait_until_connected = AsyncMock(wraps=client.wait_until_connected)
+        return client
+
+    client_factory = Mock(side_effect=create_fake_client)
+    monkeypatch.setattr(hass.config_entries, "async_update_entry", update_entry)
+    monkeypatch.setattr(hass.config_entries, "async_reload", reload_entry)
+    monkeypatch.setattr(config_flow, "ArkteosClient", client_factory)
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_RECONFIGURE, "entry_id": entry.entry_id}
+    )
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "new.local", CONF_PORT: 9999}
+    )
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"
+    assert update_entry.call_count == 1
+    _, update_kwargs = update_entry.call_args
+    assert update_kwargs["entry"] is entry
+    assert update_kwargs["data"] == {CONF_HOST: "new.local", CONF_PORT: 9999}
+    assert update_kwargs["title"] == "Arkteos new.local:9999"
+    reload_entry.assert_awaited_once_with(entry.entry_id)
+    client_factory.assert_called_once_with("new.local", 9999)
+    assert len(FakeClient.instances) == 1
+    client = FakeClient.instances[0]
+    assert client.started
+    client.wait_until_connected.assert_awaited_once()
+    assert client.last_valid_frame is not None
+    assert client.stopped
+    assert not any(
+        task.get_name() == "arkteos-client" and not task.done()
+        for task in __import__("asyncio").all_tasks()
+    )
+
+
+async def test_invalid_reconfigure_is_refused(hass) -> None:
+    entry = MockConfigEntry(domain=DOMAIN, data={CONF_HOST: "old.local", CONF_PORT: DEFAULT_PORT})
+    entry.add_to_hass(hass)
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_RECONFIGURE, "entry_id": entry.entry_id}
+    )
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"], user_input={CONF_HOST: "", CONF_PORT: DEFAULT_PORT}
+    )
+    assert result["errors"][CONF_HOST] == "invalid_host"

tests/test_diagnostics.py

@@ -0,0 +1,159 @@
+"""Tests hors ligne des diagnostics Arkteos."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+from pytest_homeassistant_custom_component.common import MockConfigEntry
+
+from custom_components.arkteos.client import ArkteosClient
+from custom_components.arkteos.const import CONF_HOST, CONF_PORT, DEFAULT_PORT, DOMAIN
+from custom_components.arkteos.diagnostics import async_get_config_entry_diagnostics
+from custom_components.arkteos.parser import filter_values, parse_frame
+
+
+FIXTURES = Path(__file__).parent / "fixtures"
+HOST = "arkteos.local"
+
+
+def _entry() -> MockConfigEntry:
+    return MockConfigEntry(
+        domain=DOMAIN,
+        title="Arkteos arkteos.local:9641",
+        data={CONF_HOST: "arkteos.local", CONF_PORT: DEFAULT_PORT},
+    )
+
+
+def _client() -> ArkteosClient:
+    return ArkteosClient(HOST, DEFAULT_PORT)
+
+
+def _values(name: str) -> dict[str, int | float | str]:
+    return filter_values(parse_frame((FIXTURES / name).read_bytes())).accepted
+
+
+async def test_diagnostics_are_redacted_and_serializable(hass) -> None:
+    entry = _entry()
+    client = _client()
+    client.available = True
+    client.running = True
+    client.connected = True
+    client.bytes_received = 123
+    client.frames_received = 4
+    client.frames_rejected = 2
+    client.reconnect_count = 1
+    entry.runtime_data = client
+
+    diagnostics = await async_get_config_entry_diagnostics(hass, entry)
+
+    assert isinstance(diagnostics, dict)
+    assert diagnostics["integration"]["domain"] == DOMAIN
+    assert diagnostics["integration"]["version"] == "0.1.0"
+    assert diagnostics["integration"]["configuration"][CONF_PORT] == DEFAULT_PORT
+    assert HOST not in json.dumps(diagnostics)
+    assert diagnostics["client"] == {
+        "available": True,
+        "running": True,
+        "connected": True,
+        "bytes_received": 123,
+        "frames_received": 4,
+        "frames_rejected": 2,
+        "reconnect_count": 1,
+        "last_frame_type": None,
+    }
+    assert diagnostics["received_data"] == {
+        "metadata": {"received": False, "data": {}},
+        "frigo": {"received": False, "data": {}},
+        "regulation": {"received": False, "data": {}},
+    }
+    json.dumps(diagnostics)
+
+
+@pytest.mark.parametrize(
+    ("attribute", "fixture_name", "section"),
+    (
+        ("latest_metadata", "metadata_95.bin", "metadata"),
+        ("latest_frigo_data", "frigo_163.bin", "frigo"),
+        ("latest_regulation_data", "regulation_227.bin", "regulation"),
+    ),
+)
+async def test_decoded_data_is_separated_without_raw_frames(
+    hass, attribute: str, fixture_name: str, section: str
+) -> None:
+    entry = _entry()
+    client = _client()
+    setattr(client, attribute, _values(fixture_name))
+    entry.runtime_data = client
+
+    diagnostics = await async_get_config_entry_diagnostics(hass, entry)
+
+    assert diagnostics["received_data"][section]["received"]
+    assert diagnostics["received_data"][section]["data"] == getattr(client, attribute)
+    assert all(
+        not values["received"]
+        for name, values in diagnostics["received_data"].items()
+        if name != section
+    )
+    assert (FIXTURES / fixture_name).read_bytes() not in json.dumps(diagnostics).encode()
+
+
+async def test_fallback_hass_data_and_missing_optional_attributes(hass) -> None:
+    entry = SimpleNamespace(
+        entry_id="fallback-entry",
+        title=f"Arkteos {HOST}:9641",
+        data={CONF_HOST: HOST},
+    )
+    client = _client()
+    del client.connected
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = client
+
+    diagnostics = await async_get_config_entry_diagnostics(hass, entry)
+
+    assert diagnostics["client"]["available"] is False
+    assert "connected" not in diagnostics["client"]
+    assert diagnostics["integration"]["configuration"][CONF_PORT] == DEFAULT_PORT
+    assert HOST not in json.dumps(diagnostics)
+
+
+async def test_sensitive_and_nonserializable_values_are_not_exposed(hass) -> None:
+    entry = _entry()
+    client = _client()
+    client.latest_frigo_data = {
+        "frame_type": "frigo",
+        "exterieur_temp": 12.3,
+        "token": "secret-token",
+        "password": "secret-password",
+        "raw": b"raw-frame",
+        "reader": object(),
+    }
+    client._writer = object()
+    entry.runtime_data = client
+
+    diagnostics = await async_get_config_entry_diagnostics(hass, entry)
+
+    serialized = json.dumps(diagnostics)
+    assert "secret-token" not in serialized
+    assert "secret-password" not in serialized
+    assert "raw-frame" not in serialized
+    assert "reader" not in diagnostics["received_data"]["frigo"]["data"]
+    assert "writer" not in serialized
+    assert "_task" not in serialized
+
+
+async def test_diagnostics_do_not_start_stop_or_connect_client(hass, monkeypatch: pytest.MonkeyPatch) -> None:
+    entry = _entry()
+    client = _client()
+    entry.runtime_data = client
+
+    async def forbidden(*_args, **_kwargs) -> None:
+        raise AssertionError("accès réseau ou cycle de vie interdit")
+
+    monkeypatch.setattr(client, "start", forbidden)
+    monkeypatch.setattr(client, "stop", forbidden)
+    diagnostics = await async_get_config_entry_diagnostics(hass, entry)
+
+    assert diagnostics["client"]["frames_rejected"] == 0
+    assert "rejected_values" not in diagnostics

tests/test_entity.py

@@ -0,0 +1,35 @@
+"""Tests de la base d'entité Arkteos."""
+
+from __future__ import annotations
+
+from unittest.mock import Mock
+
+from custom_components.arkteos.entity import ArkteosEntity
+
+
+class FakeClient:
+    def __init__(self, available: bool = False) -> None:
+        self.available = available
+        self.callbacks: list[object] = []
+
+    def add_availability_callback(self, callback) -> None:
+        self.callbacks.append(callback)
+
+    def remove_availability_callback(self, callback) -> None:
+        self.callbacks.remove(callback)
+
+
+def test_base_entity_availability_reflects_client() -> None:
+    assert ArkteosEntity(FakeClient(True)).available
+    assert not ArkteosEntity(FakeClient(False)).available
+
+
+def test_availability_callback_writes_state() -> None:
+    entity = ArkteosEntity(FakeClient())
+    entity.async_write_ha_state = Mock()
+    entity._handle_availability(True)
+    entity.async_write_ha_state.assert_called_once()
+
+
+def test_base_entity_has_no_polling_method() -> None:
+    assert not hasattr(ArkteosEntity(FakeClient()), "async_update")

tests/test_frame_extractor.py

@@ -0,0 +1,167 @@
+"""Tests de l'extracteur incrémental REG3, indépendants de Home Assistant."""
+
+from pathlib import Path
+
+from custom_components.arkteos.frame_extractor import FrameExtractor
+
+
+FIXTURES_PATH = Path(__file__).with_name("fixtures")
+
+
+def _load_frames() -> dict[str, bytes]:
+    return {
+        "metadata": (FIXTURES_PATH / "metadata_95.bin").read_bytes(),
+        "frigo": (FIXTURES_PATH / "frigo_163.bin").read_bytes(),
+        "regulation": (FIXTURES_PATH / "regulation_227.bin").read_bytes(),
+    }
+
+
+def test_no_bytes() -> None:
+    extractor = FrameExtractor()
+    assert extractor.feed(b"") == []
+    assert extractor.buffered_bytes == b""
+
+
+def test_complete_metadata_frame() -> None:
+    metadata = _load_frames()["metadata"]
+    assert FrameExtractor().feed(metadata) == [metadata]
+
+
+def test_complete_frigo_frame() -> None:
+    frigo = _load_frames()["frigo"]
+    assert FrameExtractor().feed(frigo) == [frigo]
+
+
+def test_complete_regulation_frame() -> None:
+    regulation = _load_frames()["regulation"]
+    assert FrameExtractor().feed(regulation) == [regulation]
+
+
+def test_frame_split_in_two_calls() -> None:
+    frigo = _load_frames()["frigo"]
+    extractor = FrameExtractor()
+    assert extractor.feed(frigo[:80]) == []
+    assert extractor.feed(frigo[80:]) == [frigo]
+
+
+def test_frame_provided_byte_by_byte() -> None:
+    regulation = _load_frames()["regulation"]
+    extractor = FrameExtractor()
+    extracted = [frame for byte in regulation for frame in extractor.feed(bytes([byte]))]
+    assert extracted == [regulation]
+
+
+def test_multiple_concatenated_frames() -> None:
+    frames = _load_frames()
+    sequence = frames["metadata"] + frames["frigo"] + frames["regulation"]
+    assert FrameExtractor().feed(sequence) == [
+        frames["metadata"],
+        frames["frigo"],
+        frames["regulation"],
+    ]
+
+
+def test_order_different_from_observed_cycle() -> None:
+    frames = _load_frames()
+    sequence = frames["frigo"] + frames["metadata"] + frames["regulation"]
+    assert FrameExtractor().feed(sequence) == [
+        frames["frigo"],
+        frames["metadata"],
+        frames["regulation"],
+    ]
+
+
+def test_noise_before_signature() -> None:
+    metadata = _load_frames()["metadata"]
+    assert FrameExtractor().feed(b"parasites" + metadata) == [metadata]
+
+
+def test_signature_split_between_calls() -> None:
+    metadata = _load_frames()["metadata"]
+    extractor = FrameExtractor()
+    assert extractor.feed(b"parasites\x55") == []
+    assert extractor.buffered_bytes == b"\x55"
+    assert extractor.feed(metadata[1:]) == [metadata]
+
+
+def test_incoherent_type_header_resynchronizes() -> None:
+    metadata = _load_frames()["metadata"]
+    invalid = bytearray(metadata)
+    invalid[8] = 0x0A
+    assert FrameExtractor().feed(bytes(invalid) + metadata) == [metadata]
+
+
+def test_unknown_length_header_resynchronizes() -> None:
+    metadata = _load_frames()["metadata"]
+    invalid = bytearray(metadata)
+    invalid[10:12] = (81).to_bytes(2, "little")
+    assert FrameExtractor().feed(bytes(invalid) + metadata) == [metadata]
+
+
+def test_announced_size_above_limit_resynchronizes() -> None:
+    frames = _load_frames()
+    extractor = FrameExtractor(max_buffer_size=200)
+    assert extractor.feed(frames["regulation"] + frames["metadata"]) == [
+        frames["metadata"]
+    ]
+
+
+def test_false_signature_in_noise() -> None:
+    metadata = _load_frames()["metadata"]
+    false_header = b"\x55\x00" + b"\x00" * 10
+    assert FrameExtractor().feed(b"\x10" + false_header + metadata) == [metadata]
+
+
+def test_complete_frame_followed_by_incomplete_frame() -> None:
+    frames = _load_frames()
+    extractor = FrameExtractor()
+    assert extractor.feed(frames["metadata"] + frames["frigo"][:20]) == [
+        frames["metadata"]
+    ]
+    assert extractor.buffered_bytes == frames["frigo"][:20]
+    assert extractor.feed(frames["frigo"][20:]) == [frames["frigo"]]
+
+
+def test_variable_size_fragments() -> None:
+    frames = _load_frames()
+    sequence = frames["frigo"] + frames["metadata"] + frames["regulation"]
+    extractor = FrameExtractor()
+    extracted: list[bytes] = []
+    fragment_sizes = (1, 7, 31, 2, 83, 19, 11, 131)
+    offset = 0
+    for size in fragment_sizes:
+        extracted.extend(extractor.feed(sequence[offset : offset + size]))
+        offset += size
+    extracted.extend(extractor.feed(sequence[offset:]))
+    assert extracted == [frames["frigo"], frames["metadata"], frames["regulation"]]
+
+
+def test_buffer_is_empty_after_complete_extraction() -> None:
+    metadata = _load_frames()["metadata"]
+    extractor = FrameExtractor()
+    extractor.feed(metadata)
+    assert extractor.buffered_size == 0
+
+
+def test_incomplete_buffer_is_preserved() -> None:
+    metadata = _load_frames()["metadata"]
+    extractor = FrameExtractor()
+    assert extractor.feed(metadata[:10]) == []
+    assert extractor.buffered_bytes == metadata[:10]
+
+
+def test_repeated_invalid_data_terminates() -> None:
+    invalid_header = b"\x55\x00" + b"\xff" * 10
+    extractor = FrameExtractor()
+    assert extractor.feed(invalid_header * 100) == []
+    assert extractor.buffered_size == 0
+
+
+def test_sequence_with_all_real_fixtures() -> None:
+    frames = _load_frames()
+    sequence = frames["regulation"] + frames["frigo"] + frames["metadata"]
+    assert FrameExtractor().feed(sequence) == [
+        frames["regulation"],
+        frames["frigo"],
+        frames["metadata"],
+    ]

tests/test_init.py

@@ -0,0 +1,127 @@
+"""Tests du cycle de vie de la config entry Arkteos."""
+
+from __future__ import annotations
+
+from unittest.mock import AsyncMock
+
+import pytest
+from pytest_homeassistant_custom_component.common import MockConfigEntry
+
+from custom_components.arkteos.const import CONF_HOST, CONF_PORT, DOMAIN
+
+
+class FakeClient:
+    instances: list["FakeClient"] = []
+
+    def __init__(self, _host: str, _port: int) -> None:
+        self.started = False
+        self.stopped = False
+        self.available = False
+        self._callbacks: list[object] = []
+        self.__class__.instances.append(self)
+
+    async def start(self) -> None:
+        self.started = True
+
+    async def stop(self) -> None:
+        self.stopped = True
+
+    def add_availability_callback(self, callback) -> None:
+        self._callbacks.append(callback)
+
+    def remove_availability_callback(self, callback) -> None:
+        self._callbacks.remove(callback)
+
+
+@pytest.fixture(autouse=True)
+def mock_client(monkeypatch: pytest.MonkeyPatch) -> None:
+    import custom_components.arkteos as integration
+
+    FakeClient.instances.clear()
+    monkeypatch.setattr(integration, "ArkteosClient", FakeClient)
+
+
+def _entry() -> MockConfigEntry:
+    return MockConfigEntry(domain=DOMAIN, data={CONF_HOST: "proxy.local", CONF_PORT: 9641})
+
+
+async def test_setup_creates_one_client(hass) -> None:
+    import custom_components.arkteos as integration
+
+    entry = _entry()
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    assert await integration.async_setup_entry(hass, entry)
+    assert len(FakeClient.instances) == 1
+
+
+async def test_setup_starts_client(hass) -> None:
+    import custom_components.arkteos as integration
+
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    assert await integration.async_setup_entry(hass, _entry())
+    assert FakeClient.instances[0].started
+
+
+async def test_unload_stops_client(hass) -> None:
+    import custom_components.arkteos as integration
+
+    entry = _entry()
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    hass.config_entries.async_unload_platforms = AsyncMock(return_value=True)
+    await integration.async_setup_entry(hass, entry)
+    assert await integration.async_unload_entry(hass, entry)
+    assert FakeClient.instances[0].stopped
+
+
+async def test_unload_removes_runtime_data(hass) -> None:
+    import custom_components.arkteos as integration
+
+    entry = _entry()
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    hass.config_entries.async_unload_platforms = AsyncMock(return_value=True)
+    await integration.async_setup_entry(hass, entry)
+    await integration.async_unload_entry(hass, entry)
+    assert integration._get_client(hass, entry) is None
+
+
+async def test_platform_failure_stops_client(hass) -> None:
+    import custom_components.arkteos as integration
+
+    hass.config_entries.async_forward_entry_setups = AsyncMock(side_effect=RuntimeError("platform"))
+    assert not await integration.async_setup_entry(hass, _entry())
+    assert FakeClient.instances[0].stopped
+
+
+async def test_double_setup_keeps_single_client(hass) -> None:
+    import custom_components.arkteos as integration
+
+    entry = _entry()
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    await integration.async_setup_entry(hass, entry)
+    await integration.async_setup_entry(hass, entry)
+    assert len(FakeClient.instances) == 1
+
+
+async def test_double_unload_is_safe(hass) -> None:
+    import custom_components.arkteos as integration
+
+    entry = _entry()
+    hass.config_entries.async_forward_entry_setups = AsyncMock()
+    hass.config_entries.async_unload_platforms = AsyncMock(return_value=True)
+    await integration.async_setup_entry(hass, entry)
+    assert await integration.async_unload_entry(hass, entry)
+    assert await integration.async_unload_entry(hass, entry)
+
+
+def test_no_polling_platform_is_declared() -> None:
+    from custom_components.arkteos.const import PLATFORMS
+
+    assert len(PLATFORMS) == 2
+    assert {platform.value for platform in PLATFORMS} == {"binary_sensor", "sensor"}
+
+
+def test_no_mqtt_dependency_in_manifest() -> None:
+    from pathlib import Path
+
+    manifest = (Path(__file__).parents[1] / "custom_components" / "arkteos" / "manifest.json").read_text()
+    assert "mqtt" not in manifest.lower()

tests/test_sensor.py

@@ -0,0 +1,259 @@
+"""Tests hors ligne des capteurs Arkteos alimentés par callbacks."""
+
+from __future__ import annotations
+
+from pathlib import Path
+from unittest.mock import Mock
+
+import pytest
+
+from custom_components.arkteos.const import DOMAIN
+from custom_components.arkteos.parser import filter_values, parse_frame
+from custom_components.arkteos.sensor import (
+    FRIGO_SENSORS,
+    FRIGO_STATUS_OPTIONS,
+    PAC_STATUS_OPTIONS,
+    REGULATION_SENSORS,
+    SENSOR_DESCRIPTIONS,
+    ArkteosSensor,
+    async_setup_entry,
+)
+
+
+FIXTURES = Path(__file__).parent / "fixtures"
+
+
+class FakeClient:
+    """Client en mémoire, sans réseau, pour les capteurs."""
+
+    def __init__(self) -> None:
+        self.available = False
+        self.latest_frigo_data: dict[str, int | float | str] | None = None
+        self.latest_regulation_data: dict[str, int | float | str] | None = None
+        self.data_callbacks: list[object] = []
+        self.availability_callbacks: list[object] = []
+
+    def add_data_callback(self, callback) -> None:
+        self.data_callbacks.append(callback)
+
+    def remove_data_callback(self, callback) -> None:
+        self.data_callbacks.remove(callback)
+
+    def add_availability_callback(self, callback) -> None:
+        self.availability_callbacks.append(callback)
+
+    def remove_availability_callback(self, callback) -> None:
+        self.availability_callbacks.remove(callback)
+
+    def publish(
+        self,
+        frame_type: str,
+        data: dict[str, int | float | str],
+        rejected: dict[str, int | float] | None = None,
+    ) -> None:
+        if frame_type == "frigo":
+            self.latest_frigo_data = dict(data)
+        elif frame_type == "regulation":
+            self.latest_regulation_data = dict(data)
+        availability_changed = not self.available
+        self.available = True
+        if availability_changed:
+            for callback in tuple(self.availability_callbacks):
+                callback(True)
+        for callback in tuple(self.data_callbacks):
+            callback(frame_type, dict(data), rejected or {})
+
+
+def _frame_values(name: str) -> dict[str, int | float | str]:
+    filtered = filter_values(parse_frame((FIXTURES / name).read_bytes()))
+    return filtered.accepted
+
+
+def _sensors(client: FakeClient) -> list[ArkteosSensor]:
+    return [ArkteosSensor(client, description) for description in SENSOR_DESCRIPTIONS]
+
+
+async def _add_sensors_to_hass(sensors: list[ArkteosSensor]) -> None:
+    """Exécute le cycle d'ajout qui inscrit les callbacks du client."""
+
+    for sensor in sensors:
+        sensor.async_write_ha_state = Mock()
+        await sensor.async_added_to_hass()
+
+
+def _sensor(sensors: list[ArkteosSensor], key: str) -> ArkteosSensor:
+    return next(sensor for sensor in sensors if sensor.entity_description.key == key)
+
+
+def test_total_sensor_count_and_unique_ids() -> None:
+    sensors = _sensors(FakeClient())
+    assert len(sensors) == 32
+    assert len({sensor.unique_id for sensor in sensors}) == len(sensors)
+
+
+def test_all_node_red_keys_are_described() -> None:
+    assert {description.key for description in FRIGO_SENSORS} == {
+        "exterieur_temp",
+        "nb_degivrages",
+        "temps_compresseur",
+        "nb_cycles_compresseur",
+        "freq_comp_actuelle",
+        "freq_comp_cible",
+        "fan_speed_evaporator_1",
+        "dc_voltage",
+        "statut_frigo_s",
+        "statut_frigo",
+        "active_error_fri",
+    }
+    assert {description.key for description in REGULATION_SENSORS} == {
+        "puissance_inst_produite",
+        "puissance_inst_consommee",
+        "temps_mise_sous_tension",
+        "modele_pac_s",
+        "modele_pac",
+        "primaire_temp_eau_aller_consigne",
+        "primaire_temp_eau_aller",
+        "primaire_temp_eau_retour",
+        "primaire_debit_eau",
+        "primaire_pression",
+        "primaire_circulateur_consigne",
+        "zone1_temp_interieur",
+        "zone1_consigne",
+        "ecs_temp_eau_milieu",
+        "ecs_temp_eau_bas",
+        "ecs_consigne",
+        "nb_cycles_compresseur_reg",
+        "statut_pac_s",
+        "statut_pac",
+        "active_error_reg",
+        "signal_rf_sonde_1",
+    }
+
+
+def test_initial_sensor_state_is_unavailable() -> None:
+    for sensor in _sensors(FakeClient()):
+        assert not sensor.available
+        assert sensor.native_value is None
+
+
+def test_device_info_is_shared_by_all_sensors() -> None:
+    infos = [sensor.device_info for sensor in _sensors(FakeClient())]
+    assert all(info["identifiers"] == {(DOMAIN, "arkteos_zuran4")} for info in infos)
+    assert all(info["name"] == "PAC Arkteos Zuran 4" for info in infos)
+    assert all(info["manufacturer"] == "Arkteos" for info in infos)
+
+
+async def test_frigo_frame_only_makes_frigo_sensors_available() -> None:
+    client = FakeClient()
+    sensors = _sensors(client)
+    await _add_sensors_to_hass(sensors)
+    client.publish("frigo", _frame_values("frigo_163.bin"))
+    assert all(sensor.available for sensor in sensors if sensor.entity_description.frame_type == "frigo")
+    assert not any(sensor.available for sensor in sensors if sensor.entity_description.frame_type == "regulation")
+
+
+async def test_regulation_frame_keeps_frigo_available_and_enables_regulation() -> None:
+    client = FakeClient()
+    sensors = _sensors(client)
+    await _add_sensors_to_hass(sensors)
+    client.publish("frigo", _frame_values("frigo_163.bin"))
+    client.publish("regulation", _frame_values("regulation_227.bin"))
+    assert all(sensor.available for sensor in sensors)
+
+
+@pytest.mark.parametrize(
+    ("key", "fixture_name"),
+    (
+        ("exterieur_temp", "frigo_163.bin"),
+        ("primaire_temp_eau_aller", "regulation_227.bin"),
+        ("primaire_temp_eau_retour", "regulation_227.bin"),
+        ("puissance_inst_consommee", "regulation_227.bin"),
+        ("puissance_inst_produite", "regulation_227.bin"),
+        ("primaire_pression", "regulation_227.bin"),
+        ("ecs_temp_eau_milieu", "regulation_227.bin"),
+        ("ecs_temp_eau_bas", "regulation_227.bin"),
+        ("statut_frigo_s", "frigo_163.bin"),
+        ("statut_pac_s", "regulation_227.bin"),
+    ),
+)
+async def test_fixture_values_match_parser(key: str, fixture_name: str) -> None:
+    client = FakeClient()
+    sensor = _sensor(_sensors(client), key)
+    await _add_sensors_to_hass([sensor])
+    values = _frame_values(fixture_name)
+    client.publish(values["frame_type"], values)
+    assert sensor.native_value == values[key]
+
+
+def test_status_enum_options_are_exact() -> None:
+    descriptions = {description.key: description for description in SENSOR_DESCRIPTIONS}
+    assert descriptions["statut_frigo_s"].options == FRIGO_STATUS_OPTIONS
+    assert descriptions["statut_pac_s"].options == PAC_STATUS_OPTIONS
+
+
+def test_diagnostic_and_disabled_descriptions() -> None:
+    descriptions = {description.key: description for description in SENSOR_DESCRIPTIONS}
+    for key in ("statut_frigo", "statut_pac", "modele_pac", "zone1_temp_interieur", "zone1_consigne"):
+        assert not descriptions[key].entity_registry_enabled_default
+    for key in ("active_error_fri", "active_error_reg", "signal_rf_sonde_1"):
+        assert descriptions[key].entity_category.value == "diagnostic"
+
+
+async def test_rejected_value_does_not_replace_last_valid_value() -> None:
+    client = FakeClient()
+    sensor = _sensor(_sensors(client), "exterieur_temp")
+    await _add_sensors_to_hass([sensor])
+    valid = _frame_values("frigo_163.bin")
+    client.publish("frigo", valid)
+    previous_value = sensor.native_value
+    client.publish("frigo", {"frame_type": "frigo"}, {"exterieur_temp": 151})
+    assert sensor.native_value == previous_value
+
+
+async def test_entity_added_after_frame_uses_latest_data() -> None:
+    client = FakeClient()
+    values = _frame_values("frigo_163.bin")
+    client.publish("frigo", values)
+    sensor = _sensor(_sensors(client), "exterieur_temp")
+    await _add_sensors_to_hass([sensor])
+    assert sensor.available
+    assert sensor.native_value == values["exterieur_temp"]
+
+
+def test_callbacks_only_update_their_own_frame_type() -> None:
+    client = FakeClient()
+    sensors = _sensors(client)
+    frigo_sensor = _sensor(sensors, "exterieur_temp")
+    regulation_sensor = _sensor(sensors, "primaire_temp_eau_aller")
+    frigo_sensor.async_write_ha_state = Mock()
+    regulation_sensor.async_write_ha_state = Mock()
+    client.add_data_callback(frigo_sensor._handle_data)
+    client.add_data_callback(regulation_sensor._handle_data)
+    client.publish("frigo", _frame_values("frigo_163.bin"))
+    frigo_sensor.async_write_ha_state.assert_called_once()
+    regulation_sensor.async_write_ha_state.assert_not_called()
+
+
+async def test_sensor_callback_is_removed_when_entity_is_removed() -> None:
+    client = FakeClient()
+    sensor = _sensor(_sensors(client), "exterieur_temp")
+    client.add_data_callback(sensor._handle_data)
+    client.add_availability_callback(sensor._handle_availability)
+    await sensor.async_will_remove_from_hass()
+    assert sensor._handle_data not in client.data_callbacks
+    assert sensor._handle_availability not in client.availability_callbacks
+
+
+async def test_sensor_platform_creates_all_descriptions(monkeypatch: pytest.MonkeyPatch) -> None:
+    import custom_components.arkteos.sensor as sensor_platform
+
+    client = FakeClient()
+    created: list[ArkteosSensor] = []
+    monkeypatch.setattr(sensor_platform, "_get_client", lambda _hass, _entry: client)
+    await async_setup_entry(None, object(), lambda entities: created.extend(entities))
+    assert len(created) == len(SENSOR_DESCRIPTIONS)
+
+
+def test_sensor_entities_do_not_poll_or_use_mqtt() -> None:
+    assert all(sensor._attr_should_poll is False for sensor in _sensors(FakeClient()))
+    assert "mqtt" not in Path(__file__).parents[1].joinpath("custom_components/arkteos/sensor.py").read_text().lower()