included cloud logging with filters

README.md

@@ -15,13 +15,39 @@ Check any MAC address directly through the Zyxel client with:
 python lib/_zyxel.py --mac AA:BB:CC:DD:EE:FF
 ```
 
-Omit `--mac` to check `arrival_detection.device.mac` from `service.yaml`.
+Omit `--mac` to check the first entry in `arrival_detection.devices` from
+`service.yaml`. Arrival detection supports one to three devices and tracks each
+device independently.
+
+Set `arrival_detection.zyxel.debug` to `true` to log every Zyxel HTTP/DAL call
+and MAC presence result. Under systemd, view these messages with
+`journalctl -u home-control.service -f`.
 
 An arrival is logged after the phone was confirmed absent and then present. It
-also calls `send_notification()` from `notify.py`; its message, ntfy topic, and
+also calls `send_notification()` from `lib/_notify.py`; its message, ntfy topic,
-timeout are configured under `arrival_detection.notification`. Set
+and timeout are configured under the top-level `notify` section. Set
 `arrival_detection.enabled` to `false` to disable this function.
 
+Plugins emit dictionaries containing `sender`, `event`, `id`, and `text`. The
+controller routes each sender to one or more actions through `controller.plugins`.
+For example, `_arrival_detection` emits an `arrived` event and can be routed to
+both actions through `on_event: [_notify, _cloud_logger]`. A single action name
+such as `on_event: _notify` remains supported.
+
+Arrival detection emits `arrived` and `departed` for individual device IDs. It
+also emits `empty` with ID `house` after the last present device departs. Initial
+startup state never generates these transition events.
+
+Plugin modules, factories, configuration sections, and event actions are all
+declared under `controller`. The controller contains no plugin-specific imports
+or startup logic. A plugin module exposes a configured factory (normally
+`create`), and an action module exposes a configured handler (normally
+`on_event`).
+
+The `_notify` action can filter by event or ID under `notify.filter`. Empty
+`accept` lists allow all values; populated lists act as allow-lists. Values in
+`ignore` are always rejected, even when also accepted.
+
 On the iPhone, open **Settings > Wi-Fi**, tap the info button beside the home
 network, and copy **Wi-Fi Address**. If Private Wi-Fi Address is enabled, that
 per-network address is the correct one to configure.
@@ -50,4 +76,4 @@ sudo journalctl -u home-control.service -f
 
 Confirmed arrival notifications are also appended to
 `/log/detect-arrivals.txt`. The path is configurable as
-`arrival_detection.notification.event_log`.
+`arrival_detection.event_log`.

cloud/config.yaml

@@ -0,0 +1,4 @@
+HOME_CONTROL_LOG: flask_home_control_log.log
+ip_address: 127.0.0.1
+port: 5000
+url_prefix: /home_logger

cloud/flask_home_control_log.log

@@ -0,0 +1,2 @@
+{"timestamp":"2026-08-23T06:09:35.779477+00:00","remote_addr":"127.0.0.1","event":{"sender":"_arrival_detection","event":"departed","id":"ignace","text":""}}
+{"timestamp":"2026-08-23T06:10:47.665139+00:00","remote_addr":"127.0.0.1","event":{"sender":"_arrival_detection","event":"arrived","id":"ignace","text":""}}

cloud/flask_home_control_log.py

@@ -0,0 +1,70 @@
+import json
+import os
+from datetime import datetime, timezone
+from pathlib import Path
+
+import yaml
+from flask import Flask, Response, jsonify, request
+
+
+CONFIG_FILE = Path(__file__).with_name("config.yaml")
+with CONFIG_FILE.open(encoding="utf-8") as stream:
+    CONFIG = yaml.safe_load(stream) or {}
+
+LOG_FILE = Path(CONFIG["HOME_CONTROL_LOG"])
+if not LOG_FILE.is_absolute():
+    LOG_FILE = CONFIG_FILE.parent / LOG_FILE
+IP_ADDRESS = str(CONFIG.get("ip_address", "127.0.0.1"))
+PORT = int(CONFIG.get("port", 5000))
+URL_PREFIX = "/" + str(CONFIG.get("url_prefix", "")).strip("/")
+if URL_PREFIX == "/":
+    URL_PREFIX = ""
+
+app = Flask(__name__)
+
+
+def _tail(path: Path, line_count: int = 50) -> str:
+    try:
+        with path.open("rb") as logfile:
+            logfile.seek(0, os.SEEK_END)
+            end = logfile.tell()
+            data = b""
+
+            while end > 0 and data.count(b"\n") <= line_count:
+                size = min(4096, end)
+                end -= size
+                logfile.seek(end)
+                data = logfile.read(size) + data
+
+        return b"\n".join(data.splitlines()[-line_count:]).decode("utf-8", "replace")
+    except FileNotFoundError:
+        return ""
+
+
+@app.route(f"{URL_PREFIX}/event", methods=["GET", "POST"])
+def add_event():
+    data = request.get_json(silent=True)
+    if data is None:
+        data = request.values.to_dict(flat=False)
+    if not data:
+        data = request.get_data(as_text=True)
+
+    entry = {
+        "timestamp": datetime.now(timezone.utc).isoformat(),
+        "remote_addr": request.remote_addr,
+        "event": data,
+    }
+    LOG_FILE.parent.mkdir(parents=True, exist_ok=True)
+    with LOG_FILE.open("a", encoding="utf-8") as logfile:
+        logfile.write(json.dumps(entry, ensure_ascii=False, separators=(",", ":")) + "\n")
+
+    return jsonify(ok=True), 201
+
+
+@app.get(URL_PREFIX or "/", strict_slashes=False)
+def show_log():
+    return Response(_tail(LOG_FILE), mimetype="text/plain")
+
+
+if __name__ == "__main__":
+    app.run(host=IP_ADDRESS, port=PORT)

lib/_arrival_detection.py

@@ -3,12 +3,12 @@
 from __future__ import annotations
 
 import logging
-import time
 from datetime import datetime
 from pathlib import Path
+from threading import Event, Thread
+from typing import Callable
 
 from lib._zyxel import ZyxelError, ZyxelRouter, normalize_mac
-from notify import send_notification
 
 LOG = logging.getLogger("home_control.arrival_detection")
 
@@ -25,7 +25,8 @@ class ArrivalDetector:
         self.present_samples = 0
         self.absent_samples = 0
 
-    def sample(self, present: bool) -> bool:
+    def transition(self, present: bool) -> str | None:
+        """Return ``arrived`` or ``departed`` after a confirmed state change."""
         self.present_samples = self.present_samples + 1 if present else 0
         self.absent_samples = self.absent_samples + 1 if not present else 0
         if self.state is None:
@@ -33,13 +34,18 @@ class ArrivalDetector:
                 self.state = True
             elif self.absent_samples >= self.absent_after:
                 self.state = False
-            return False
+            return None
         if self.state and self.absent_samples >= self.absent_after:
             self.state = False
+            return "departed"
         elif not self.state and self.present_samples >= self.present_after:
             self.state = True
-            return True
+            return "arrived"
-        return False
+        return None
+
+    def sample(self, present: bool) -> bool:
+        """Backward-compatible arrival-only result."""
+        return self.transition(present) == "arrived"
 
 
 def _build_router(config: dict) -> ZyxelRouter:
@@ -49,57 +55,157 @@ def _build_router(config: dict) -> ZyxelRouter:
         timeout=float(router.get("timeout", 10)),
         verify_tls=bool(router.get("verify_tls", True)),
         hosts_oid=str(router.get("hosts_oid", "lanhosts")),
+        debug=bool(router.get("debug", False)),
     )
 
 
-def _notify(config: dict, device: dict) -> None:
+def _record_event(config: dict, event: dict, mac: str = "") -> None:
-    LOG.info("ARRIVAL: %s", device["name"])
+    """Record a confirmed presence event before handing it to the controller."""
-    notification = config.get("notification", {})
+    LOG.info("%s: %s", event["event"].upper(), event["id"])
-    message = str(notification.get("message", "{name} arrived home")).format(
+    event_log = config.get("event_log")
-        name=device["name"], mac=device["mac"]
-    )
-    event_log = notification.get("event_log")
     if event_log:
         timestamp = datetime.now().astimezone().isoformat(timespec="seconds")
+        mac_field = f" mac={mac}" if mac else ""
         with Path(event_log).open("a", encoding="utf-8") as stream:
-            stream.write(f"{timestamp} {message}\n")
+            stream.write(
-    if not notification.get("enabled", True):
+                f"{timestamp} {event['event'].upper()} id={event['id']}{mac_field}\n"
-        return
+            )
-    send_notification(
+
-        message,
+
-        topic_url=notification.get("topic_url") or None,
+def _record_arrival(config: dict, device: dict) -> None:
-        timeout=float(notification.get("timeout", 10)),
+    """Compatibility helper for callers that record an arrival directly."""
+    _record_event(
+        config,
+        {"sender": "_arrival_detection", "event": "arrived", "id": device["id"], "text": ""},
+        device["mac"],
     )
 
 
-def run(config: dict, stop_requested, *, once: bool = False) -> int:
+def _configured_devices(config: dict) -> list[dict]:
-    """Run arrival detection until stop_requested returns true."""
+    devices = config.get("devices")
-    device = dict(config["device"])
+    if not isinstance(devices, list) or not devices:
-    device["mac"] = normalize_mac(device["mac"])
+        raise ValueError("arrival_detection.devices must contain at least one device")
-    polling = config.get("polling", {})
+    if len(devices) > 3:
-    detector = ArrivalDetector(
+        raise ValueError("arrival_detection.devices supports at most 3 devices")
-        int(polling.get("absent_after", 3)), int(polling.get("present_after", 2))
+    normalized = []
-    )
+    identifiers = set()
-    interval = float(polling.get("interval_seconds", 10))
+    for index, device in enumerate(devices, start=1):
-    retry = float(polling.get("error_retry_seconds", 30))
+        if not isinstance(device, dict) or not device.get("id") or not device.get("mac"):
-    router = _build_router(config)
+            raise ValueError(f"arrival_detection.devices entry {index} requires id and mac")
-    try:
+        item = dict(device)
-        while not stop_requested():
+        item["mac"] = normalize_mac(str(item["mac"]))
-            try:
+        item["id"] = str(item["id"]).strip().lower()
-                present = router.is_connected(device["mac"])
+        if not item["id"]:
-                LOG.debug("%s is %s", device["name"], "connected" if present else "absent")
+            raise ValueError(f"arrival_detection.devices entry {index} requires a non-empty id")
-                if detector.sample(present):
+        if item["id"] in identifiers:
-                    _notify(config, device)
+            raise ValueError(f"duplicate arrival_detection device id: {item['id']}")
-                if once:
+        identifiers.add(item["id"])
-                    print("connected" if present else "absent")
+        normalized.append(item)
-                    return 0
+    return normalized
-                time.sleep(interval)
+
-            except (ZyxelError, OSError, RuntimeError) as error:
+
-                LOG.error("poll failed: %s", error)
+class ArrivalMonitor:
-                router.close()
+    """Background Zyxel monitor that emits generic controller events."""
-                if once:
+
-                    return 1
+    def __init__(self, config: dict, on_event: Callable[[dict], None]) -> None:
-                time.sleep(retry)
+        self.config = config
-    finally:
+        self.on_event = on_event
-        router.close()
+        self.devices = _configured_devices(config)
-    return 0
+        polling = config.get("polling", {})
+        self.detectors = {
+            device["mac"]: ArrivalDetector(
+                int(polling.get("absent_after", 3)),
+                int(polling.get("present_after", 2)),
+            )
+            for device in self.devices
+        }
+        self.interval = float(polling.get("interval_seconds", 10))
+        self.retry = float(polling.get("error_retry_seconds", 30))
+        self.router = _build_router(config)
+        self._stop = Event()
+        self._thread: Thread | None = None
+        self._house_occupied: bool | None = None
+
+    def _connection_states(self) -> dict[str, bool]:
+        return self.router.connection_states([device["mac"] for device in self.devices])
+
+    def check_once(self) -> list[str]:
+        states = self._connection_states()
+        return [
+            f"{device['id']}={'connected' if states[device['mac']] else 'absent'}"
+            for device in self.devices
+        ]
+
+    def _process_states(self, states: dict[str, bool]) -> None:
+        for device in self.devices:
+            present = states[device["mac"]]
+            LOG.debug(
+                "%s is %s",
+                device["id"],
+                "connected" if present else "absent",
+            )
+            transition = self.detectors[device["mac"]].transition(present)
+            if transition:
+                event = {
+                    "sender": "_arrival_detection",
+                    "event": transition,
+                    "id": device["id"],
+                    "text": "",
+                }
+                _record_event(self.config, event, device["mac"])
+                self.on_event(event)
+
+        known_states = [detector.state for detector in self.detectors.values()]
+        if all(state is not None for state in known_states):
+            occupied = any(known_states)
+            if self._house_occupied is True and not occupied:
+                event = {
+                    "sender": "_arrival_detection",
+                    "event": "empty",
+                    "id": "house",
+                    "text": "",
+                }
+                _record_event(self.config, event)
+                self.on_event(event)
+            self._house_occupied = occupied
+
+    def _run(self) -> None:
+        try:
+            while not self._stop.is_set():
+                try:
+                    states = self._connection_states()
+                    self._process_states(states)
+                    self._stop.wait(self.interval)
+                except (ZyxelError, OSError, RuntimeError) as error:
+                    LOG.error("poll failed: %s", error)
+                    self.router.close()
+                    self._stop.wait(self.retry)
+        finally:
+            self.router.close()
+
+    def start(self) -> None:
+        if self._thread and self._thread.is_alive():
+            raise RuntimeError("arrival monitor is already running")
+        self._thread = Thread(target=self._run, name="zyxel-arrival-monitor")
+        self._thread.start()
+        LOG.info("Zyxel arrival monitor started")
+
+    def stop(self) -> None:
+        self._stop.set()
+
+    def join(self, timeout: float | None = None) -> None:
+        if self._thread:
+            self._thread.join(timeout)
+
+    @property
+    def is_alive(self) -> bool:
+        return bool(self._thread and self._thread.is_alive())
+
+    def close(self) -> None:
+        """Release resources after a one-shot check."""
+        self.router.close()
+
+
+def create(config: dict, on_event: Callable[[dict], None]) -> ArrivalMonitor:
+    """Generic controller plugin factory."""
+    return ArrivalMonitor(config, on_event)

lib/_cloud_logger.py

@@ -0,0 +1,80 @@
+"""Send controller events to the cloud event logger."""
+
+import logging
+from datetime import datetime, timezone
+
+import requests
+
+
+LOG = logging.getLogger("home_control.cloud_logger")
+
+
+def _filter_values(config: dict, mode: str, field: str) -> set[str]:
+    value = config.get("filter", {}).get(mode, {}).get(field, [])
+    if not isinstance(value, list) or any(not isinstance(item, str) for item in value):
+        raise ValueError(
+            f"cloud_logger.filter.{mode}.{field} must be a list of strings"
+        )
+    return set(value)
+
+
+def accepts_event(config: dict, message: dict) -> bool:
+    """Return whether an event passes configured event and ID filters."""
+    accepted_events = _filter_values(config, "accept", "events")
+    accepted_ids = _filter_values(config, "accept", "ids")
+    ignored_events = _filter_values(config, "ignore", "events")
+    ignored_ids = _filter_values(config, "ignore", "ids")
+
+    if message["event"] in ignored_events or message["id"] in ignored_ids:
+        return False
+    if accepted_events and message["event"] not in accepted_events:
+        return False
+    if accepted_ids and message["id"] not in accepted_ids:
+        return False
+    return True
+
+
+def send_event(message: dict, event_url: str, timeout: float = 10) -> None:
+    """POST an event dictionary as JSON to the configured logger endpoint."""
+    if not isinstance(message, dict):
+        raise TypeError("message must be a dictionary")
+    if not event_url:
+        raise ValueError("event_url is required")
+
+    response = requests.post(event_url, json=message, timeout=timeout)
+    response.raise_for_status()
+
+
+def on_event(config: dict, message: dict) -> None:
+    """Controller action that forwards event data to the cloud logger."""
+    if not config.get("enabled", True):
+        return
+
+    try:
+        if not accepts_event(config, message):
+            LOG.debug(
+                "cloud event ignored by filter: event=%s id=%s",
+                message["event"],
+                message["id"],
+            )
+            return
+
+        timestamp = datetime.now(timezone.utc).isoformat()
+        values = {**message, "datetime": timestamp}
+        messages = config.get("messages", {})
+        template = messages.get(
+            message["event"],
+            config.get("message", "{datetime} {sender}: {event} ({id})"),
+        )
+        payload = {
+            **message,
+            "datetime": timestamp,
+            "text": message.get("text") or str(template).format(**values),
+        }
+        send_event(
+            payload,
+            event_url=str(config.get("event_url", "")),
+            timeout=float(config.get("timeout", 10)),
+        )
+    except (TypeError, ValueError, requests.RequestException) as error:
+        LOG.error("cloud event logging failed: %s", error)

lib/_notify.py

@@ -0,0 +1,115 @@
+#!/usr/bin/env python3
+"""Send text notifications to a configured ntfy topic."""
+
+import argparse
+import logging
+import os
+import sys
+from urllib.error import HTTPError, URLError
+from urllib.request import Request, urlopen
+
+
+LOG = logging.getLogger("home_control.notify")
+
+def send_notification(message, topic_url=None, timeout=10):
+    """Send *message* to ntfy and return the server response body."""
+    if not isinstance(message, str):
+        raise TypeError("message must be a string")
+    if not message:
+        raise ValueError("message must not be empty")
+    url = topic_url or os.environ.get("NTFY_TOPIC_URL")
+    if not url:
+        raise ValueError("topic_url is required (or set NTFY_TOPIC_URL)")
+    request = Request(
+        url,
+        data=message.encode("utf-8"),
+        headers={"Content-Type": "text/plain; charset=utf-8"},
+        method="POST",
+    )
+    with urlopen(request, timeout=timeout) as response:
+        return response.read().decode("utf-8")
+
+
+def _filter_values(config: dict, mode: str, field: str) -> set[str]:
+    value = config.get("filter", {}).get(mode, {}).get(field, [])
+    if not isinstance(value, list) or any(not isinstance(item, str) for item in value):
+        raise ValueError(f"notify.filter.{mode}.{field} must be a list of strings")
+    return set(value)
+
+
+def accepts_event(config: dict, message: dict) -> bool:
+    """Return whether an event passes configured event and ID filters."""
+    accepted_events = _filter_values(config, "accept", "events")
+    accepted_ids = _filter_values(config, "accept", "ids")
+    ignored_events = _filter_values(config, "ignore", "events")
+    ignored_ids = _filter_values(config, "ignore", "ids")
+
+    if message["event"] in ignored_events or message["id"] in ignored_ids:
+        return False
+    if accepted_events and message["event"] not in accepted_events:
+        return False
+    if accepted_ids and message["id"] not in accepted_ids:
+        return False
+    return True
+
+
+def on_event(config: dict, message: dict) -> None:
+    """Generic controller action for event dictionaries."""
+    if not config.get("enabled", True):
+        return
+    if not accepts_event(config, message):
+        LOG.debug(
+            "notification ignored by filter: event=%s id=%s",
+            message["event"],
+            message["id"],
+        )
+        return
+    messages = config.get("messages", {})
+    template = messages.get(message["event"], config.get("message", "{sender}: {event} ({id})"))
+    text = message["text"] or str(template).format(**message)
+    try:
+        send_notification(
+            text,
+            topic_url=config.get("topic_url") or None,
+            timeout=float(config.get("timeout", 10)),
+        )
+    except (OSError, RuntimeError, ValueError) as error:
+        LOG.error(
+            "notification failed for %s/%s/%s: %s",
+            message["sender"],
+            message["event"],
+            message["id"],
+            error,
+        )
+
+
+def parse_arguments():
+    parser = argparse.ArgumentParser(description="Send a text message to an ntfy topic.")
+    parser.add_argument("message", nargs="+", help="notification text")
+    parser.add_argument("--topic-url", help="ntfy topic URL (or use NTFY_TOPIC_URL)")
+    parser.add_argument("--timeout", type=float, default=10, help="request timeout in seconds")
+    return parser.parse_args()
+
+
+def main():
+    args = parse_arguments()
+    try:
+        print(
+            send_notification(
+                " ".join(args.message),
+                topic_url=args.topic_url,
+                timeout=args.timeout,
+            )
+        )
+        return 0
+    except HTTPError as error:
+        print(f"ntfy returned HTTP {error.code}: {error.reason}", file=sys.stderr)
+    except URLError as error:
+        print(f"Could not reach ntfy: {error.reason}", file=sys.stderr)
+    except (TypeError, ValueError) as error:
+        print(f"Invalid notification: {error}", file=sys.stderr)
+    return 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

lib/_zyxel.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 import argparse
 import base64
 import json
+import logging
 import os
 import sys
 from dataclasses import dataclass
@@ -19,6 +20,9 @@ from Crypto.PublicKey import RSA
 from Crypto.Util.Padding import pad, unpad
 
 
+LOG = logging.getLogger("home_control.zyxel")
+
+
 class ZyxelError(RuntimeError):
     """The router rejected a request or returned an unexpected response."""
 
@@ -50,6 +54,7 @@ class ZyxelRouter:
         timeout: float = 10,
         verify_tls: bool = True,
         hosts_oid: str = "lanhosts",
+        debug: bool = False,
     ) -> None:
         if "://" not in host:
             host = f"http://{host}"
@@ -62,9 +67,11 @@ class ZyxelRouter:
         self.timeout = timeout
         self.verify_tls = verify_tls
         self.hosts_oid = hosts_oid
+        self.debug = debug
         self.session = requests.Session()
         self._aes_key: bytes | None = None
         self._session_key: str | None = None
+        self._has_logged_connection = False
 
     def __enter__(self) -> "ZyxelRouter":
         self.login()
@@ -79,6 +86,8 @@ class ZyxelRouter:
         try:
             response = self.session.request(method, f"{self.url}{path}", **kwargs)
             response.raise_for_status()
+            if self.debug:
+                LOG.info("Zyxel HTTP call: %s %s -> %s", method, path, response.status_code)
             return response
         except requests.RequestException as error:
             raise ZyxelError(f"Zyxel request failed: {error}") from error
@@ -120,6 +129,12 @@ class ZyxelRouter:
         if result.get("result") != "ZCFG_SUCCESS" or not result.get("sessionkey"):
             raise ZyxelError(f"Zyxel login failed: {result.get('result', 'unknown error')}")
         self._session_key = str(result["sessionkey"])
+        self._log_first_connection()
+
+    def _log_first_connection(self) -> None:
+        if not self._has_logged_connection:
+            LOG.info("Connected successfully to Zyxel router at %s", self.url)
+            self._has_logged_connection = True
 
     def _decrypt(self, envelope: dict[str, Any]) -> dict[str, Any]:
         if "content" not in envelope or "iv" not in envelope:
@@ -143,7 +158,10 @@ class ZyxelRouter:
         response = self._request(
             "GET", "/cgi-bin/DAL", params={"oid": oid, "sessionkey": self._session_key}
         )
-        return self._decrypt(self._json(response))
+        result = self._decrypt(self._json(response))
+        if self.debug:
+            LOG.info("Zyxel DAL call: oid=%s -> %s", oid, result.get("result", "no result"))
+        return result
 
     def get_lan_hosts(self) -> list[LanHost]:
         result = self.dal_get(self.hosts_oid)
@@ -184,9 +202,23 @@ class ZyxelRouter:
             ))
         return hosts
 
+    def connection_states(self, macs: list[str]) -> dict[str, bool]:
+        """Check several MAC addresses using one router query."""
+        wanted = [normalize_mac(mac) for mac in macs]
+        active_macs = {host.mac for host in self.get_lan_hosts() if host.active}
+        states = {mac: mac in active_macs for mac in wanted}
+        if self.debug:
+            for mac, connected in states.items():
+                LOG.info(
+                    "Zyxel presence result: mac=%s -> %s",
+                    mac,
+                    "connected" if connected else "absent",
+                )
+        return states
+
     def is_connected(self, mac: str) -> bool:
         wanted = normalize_mac(mac)
-        return any(host.mac == wanted and host.active for host in self.get_lan_hosts())
+        return self.connection_states([wanted])[wanted]
 
     def close(self) -> None:
         if self._session_key:
@@ -204,7 +236,7 @@ def _load_cli_config(path: Path) -> tuple[dict[str, Any], str]:
         with path.open(encoding="utf-8") as stream:
             root = yaml.safe_load(stream)
         arrival = root["arrival_detection"]
-        return arrival["zyxel"], str(arrival["device"]["mac"])
+        return arrival["zyxel"], str(arrival["devices"][0]["mac"])
     except (OSError, TypeError, KeyError, yaml.YAMLError) as error:
         raise ZyxelError(f"could not load configuration from {path}: {error}") from error
 
@@ -221,7 +253,7 @@ def main() -> int:
     )
     parser.add_argument(
         "--mac",
-        help="MAC address to check (default: arrival_detection.device.mac)",
+        help="MAC address to check (default: first arrival_detection.devices entry)",
     )
     args = parser.parse_args()
 
@@ -235,6 +267,7 @@ def main() -> int:
             timeout=float(config.get("timeout", 10)),
             verify_tls=bool(config.get("verify_tls", True)),
             hosts_oid=str(config.get("hosts_oid", "lanhosts")),
+            debug=bool(config.get("debug", False)),
         )
         try:
             connected = router.is_connected(mac)

log/detect-arrivals.txt

@@ -0,0 +1,3 @@
+2026-08-22T22:27:23+02:00 ARRIVAL name=Ignace mac=ce:68:53:a8:fc:07
+2026-08-23T08:09:35+02:00 DEPARTED id=ignace mac=ce:68:53:a8:fc:07
+2026-08-23T08:10:47+02:00 ARRIVED id=ignace mac=ce:68:53:a8:fc:07

notify.py

@@ -1,95 +0,0 @@
-#!/usr/bin/env python3
-
-"""Send a text notification to the Home Alert ntfy topic."""
-
-import argparse
-import os
-import sys
-from urllib.error import HTTPError, URLError
-from urllib.request import Request, urlopen
-
-
-DEFAULT_TOPIC_URL = (
-    "https://ntfy.sh/VK20_Home_Alert_______4671938674123049873459"
-)
-
-
-def send_notification(
-    message,
-    topic_url=None,
-    timeout=10,
-):
-    """Send *message* to ntfy and return the server response body."""
-
-    if not isinstance(message, str):
-        raise TypeError("message must be a string")
-
-    if not message:
-        raise ValueError("message must not be empty")
-
-    url = topic_url or os.environ.get(
-        "NTFY_TOPIC_URL",
-        DEFAULT_TOPIC_URL,
-    )
-    request = Request(
-        url,
-        data=message.encode("utf-8"),
-        headers={"Content-Type": "text/plain; charset=utf-8"},
-        method="POST",
-    )
-
-    with urlopen(request, timeout=timeout) as response:
-        return response.read().decode("utf-8")
-
-
-def parse_arguments():
-    """Parse command-line arguments."""
-
-    parser = argparse.ArgumentParser(
-        description="Send a text message to the Home Alert ntfy topic.",
-    )
-    parser.add_argument(
-        "message",
-        nargs="+",
-        help="notification text",
-    )
-    parser.add_argument(
-        "--topic-url",
-        help="override the ntfy topic URL",
-    )
-    parser.add_argument(
-        "--timeout",
-        type=float,
-        default=10,
-        help="request timeout in seconds (default: 10)",
-    )
-    return parser.parse_args()
-
-
-def main():
-    args = parse_arguments()
-
-    try:
-        response = send_notification(
-            " ".join(args.message),
-            topic_url=args.topic_url,
-            timeout=args.timeout,
-        )
-        print(response)
-        return 0
-
-    except HTTPError as exc:
-        print(
-            f"ntfy returned HTTP {exc.code}: {exc.reason}",
-            file=sys.stderr,
-        )
-    except URLError as exc:
-        print(f"Could not reach ntfy: {exc.reason}", file=sys.stderr)
-    except (TypeError, ValueError) as exc:
-        print(f"Invalid notification: {exc}", file=sys.stderr)
-
-    return 1
-
-
-if __name__ == "__main__":
-    raise SystemExit(main())

service.py

@@ -1,16 +1,21 @@
 #!/usr/bin/env python3
-"""Entry point and orchestrator for enabled home-control functions."""
+"""Configuration-driven event controller for home-control plugins."""
 
 from __future__ import annotations
 
 import argparse
+import importlib
 import logging
 import signal
 from pathlib import Path
+from threading import Event
+from typing import Any, Callable
 
 import yaml
 
-from lib import _arrival_detection
+
+LOG = logging.getLogger("home_control")
+EVENT_FIELDS = ("sender", "event", "id", "text")
 
 
 def load_config(path: Path) -> dict:
@@ -21,33 +26,151 @@ def load_config(path: Path) -> dict:
     return config
 
 
-def run(config: dict, once: bool = False) -> int:
+def _configured_callable(spec: dict, key: str, default: str) -> Callable:
-    stopped = False
+    module_name = spec.get("module")
+    if not isinstance(module_name, str) or not module_name.startswith("lib."):
+        raise ValueError("component module must be inside the lib package")
+    attribute = spec.get(key, default)
+    if not isinstance(attribute, str):
+        raise ValueError(f"component {key} must be a string")
+    try:
+        function = getattr(importlib.import_module(module_name), attribute)
+    except (ImportError, AttributeError) as error:
+        raise ValueError(f"could not load {module_name}.{attribute}: {error}") from error
+    if not callable(function):
+        raise ValueError(f"configured component {module_name}.{attribute} is not callable")
+    return function
 
-    def stop(*_: object) -> None:
-        nonlocal stopped
-        stopped = True
 
-    signal.signal(signal.SIGTERM, stop)
+class Controller:
-    signal.signal(signal.SIGINT, stop)
+    """Load, supervise, and route plugins without plugin-specific code."""
 
-    arrival_config = config.get("arrival_detection")
+    def __init__(self, config: dict) -> None:
-    if not isinstance(arrival_config, dict):
+        self.config = config
-        raise ValueError("arrival_detection configuration is required")
+        controller = config.get("controller", {})
-    if not arrival_config.get("enabled", True):
+        self.plugin_specs = controller.get("plugins", {})
-        logging.getLogger("home_control").info("arrival detection is disabled")
+        self.action_specs = controller.get("actions", {})
+        if not isinstance(self.plugin_specs, dict):
+            raise ValueError("controller.plugins must be a mapping")
+        if not isinstance(self.action_specs, dict):
+            raise ValueError("controller.actions must be a mapping")
+        self.stopped = Event()
+        self.plugins: list[Any] = []
+
+    @staticmethod
+    def _validate_event(message: dict) -> None:
+        if not isinstance(message, dict):
+            raise ValueError("plugin event must be a dictionary")
+        missing = [field for field in EVENT_FIELDS if field not in message]
+        if missing:
+            raise ValueError(f"plugin event is missing fields: {', '.join(missing)}")
+        if any(not isinstance(message[field], str) for field in EVENT_FIELDS):
+            raise ValueError("plugin event fields must all be strings")
+
+    def _component_config(self, spec: dict) -> dict:
+        section = spec.get("config")
+        if not isinstance(section, str):
+            raise ValueError("component config must name a configuration section")
+        component_config = self.config.get(section)
+        if not isinstance(component_config, dict):
+            raise ValueError(f"configuration section {section!r} is required")
+        return component_config
+
+    def handle_event(self, message: dict) -> None:
+        """Route a validated plugin event to its configured action."""
+        self._validate_event(message)
+        plugin_spec = self.plugin_specs.get(message["sender"])
+        if not isinstance(plugin_spec, dict):
+            LOG.warning("no controller route for plugin %s", message["sender"])
+            return
+        configured_actions = plugin_spec.get("on_event")
+        action_names = (
+            [configured_actions]
+            if isinstance(configured_actions, str)
+            else configured_actions
+        )
+        if not isinstance(action_names, list) or any(
+            not isinstance(name, str) for name in action_names
+        ):
+            raise ValueError(
+                f"on_event for plugin {message['sender']!r} must be a string or list of strings"
+            )
+
+        for action_name in action_names:
+            action_spec = self.action_specs.get(action_name)
+            if not isinstance(action_spec, dict):
+                raise ValueError(
+                    f"unknown on_event action {action_name!r} "
+                    f"for plugin {message['sender']!r}"
+                )
+            handler = _configured_callable(action_spec, "handler", "on_event")
+            handler(self._component_config(action_spec), message)
+
+    def _load_plugins(self) -> None:
+        for name, spec in self.plugin_specs.items():
+            if not isinstance(spec, dict):
+                raise ValueError(f"controller plugin {name!r} must be a mapping")
+            plugin_config = self._component_config(spec)
+            if not plugin_config.get("enabled", True):
+                LOG.info("plugin %s is disabled", name)
+                continue
+            factory = _configured_callable(spec, "factory", "create")
+            plugin = factory(plugin_config, self.handle_event)
+            self.plugins.append(plugin)
+
+    def run(self) -> int:
+        self._load_plugins()
+        for plugin in self.plugins:
+            plugin.start()
+        try:
+            while not self.stopped.wait(1):
+                if any(not plugin.is_alive for plugin in self.plugins):
+                    LOG.error("a controller plugin stopped unexpectedly")
+                    return 1
+        finally:
+            for plugin in self.plugins:
+                plugin.stop()
+            for plugin in self.plugins:
+                plugin.join(timeout=20)
         return 0
-    return _arrival_detection.run(arrival_config, lambda: stopped, once=once)
+
+    def stop(self, *_: object) -> None:
+        self.stopped.set()
+
+    def check_once(self) -> int:
+        self._load_plugins()
+        result = 0
+        for plugin in self.plugins:
+            try:
+                check_once = getattr(plugin, "check_once", None)
+                if callable(check_once):
+                    output = check_once()
+                    if output:
+                        print("\n".join(output) if isinstance(output, list) else output)
+            except (OSError, RuntimeError) as error:
+                LOG.error("plugin check failed: %s", error)
+                result = 1
+            finally:
+                close = getattr(plugin, "close", None)
+                if callable(close):
+                    close()
+        return result
+
+
+def run(config: dict, once: bool = False) -> int:
+    controller = Controller(config)
+    signal.signal(signal.SIGTERM, controller.stop)
+    signal.signal(signal.SIGINT, controller.stop)
+    return controller.check_once() if once else controller.run()
 
 
 def main() -> int:
     parser = argparse.ArgumentParser()
     parser.add_argument("--config", type=Path, default=Path(__file__).with_name("service.yaml"))
-    parser.add_argument("--once", action="store_true", help="check once and print connected/absent")
+    parser.add_argument("--once", action="store_true", help="check plugins once")
     args = parser.parse_args()
     config = load_config(args.config)
-    arrival = config.get("arrival_detection", {})
+    logging_config = config.get("controller", {}).get("logging", {})
-    logging_config = arrival.get("logging", {}) if isinstance(arrival, dict) else {}
     logging.basicConfig(
         level=getattr(logging, str(logging_config.get("level", "INFO")).upper()),
         format="%(asctime)s %(levelname)s %(message)s",

service.yaml

@@ -1,3 +1,23 @@
+controller:
+  plugins:
+    _arrival_detection:
+      module: lib._arrival_detection
+      factory: create
+      config: arrival_detection
+      on_event: [_notify, _cloud_logger]
+  actions:
+    _notify:
+      module: lib._notify
+      handler: on_event
+      config: notify
+    _cloud_logger:
+      module: lib._cloud_logger
+      handler: on_event
+      config: cloud_logger
+
+  logging:
+    level: INFO
+
 arrival_detection:
   enabled: true
 
@@ -8,12 +28,16 @@ arrival_detection:
     timeout: 10
     verify_tls: true
     hosts_oid: lanhosts
+    # Log every router/API call and its result without logging credentials.
+    debug: true
 
-  device:
+  devices:
-    name: Ignace
+    - id: ignace
-    # Use the iPhone's Wi-Fi Address shown for your home SSID. If Private Wi-Fi
+      mac: "ce:68:53:a8:fc:07"
-    # Address is enabled, this is the per-network private address, not hardware MAC.
+    - id: janine
-    mac: "ce:68:53:a8:fc:07"
+      mac: "dc:10:57:9b:85:0e"
+    - id: Fatima
+      mac: "02:f8:26:33:2f:d9"
 
   polling:
     interval_seconds: 5
@@ -21,14 +45,39 @@ arrival_detection:
     absent_after: 4
     error_retry_seconds: 30
 
-  notification:
+  event_log: log/detect-arrivals.txt
-    enabled: true
-    # Available placeholders: {name}, {mac}.
-    message: "{name} arrived home"
-    event_log: /log/detect-arrivals.txt
-    # Leave blank to use the default ntfy topic configured in notify.py.
-    topic_url: ""
-    timeout: 10
 
-  logging:
+notify:
-    level: INFO
+  enabled: true
+  filter:
+    # Empty accept lists allow all values. Ignore lists always take precedence.
+    accept:
+      events: [empty]
+      ids: []
+    ignore:
+      events: [arrived, departed] 
+      ids: []
+  # Available placeholders: {sender}, {event}, {id}, {text}.
+  message: "{sender}: {event} ({id})"
+  messages:
+    arrived: "{id} arrived home"
+    departed: "{id} left home"
+    empty: "The house is empty"
+  # May also be supplied through the NTFY_TOPIC_URL environment variable.
+  topic_url: "https://ntfy.sh/VK20_Home_Alert_______4671938674123049873459"
+  timeout: 10
+
+cloud_logger:
+  enabled: true
+  event_url: http://127.0.0.1:5000/home_logger/event
+  timeout: 10
+  filter:
+    # Empty accept lists allow all values. Ignore lists always take precedence.
+    accept:
+      events: [empty]
+      ids: []
+    ignore:
+      events: [arrived, departed] 
+      ids: []
+  # Available placeholders: {sender}, {event}, {id}, {text}.
+  message: "{datetime} {sender}: {event} ({id})"

tests/test_service.py

@@ -4,7 +4,14 @@ from tempfile import TemporaryDirectory
 from unittest.mock import patch
 
 from lib._zyxel import ZyxelRouter, normalize_mac
-from lib._arrival_detection import ArrivalDetector, _notify
+from lib._arrival_detection import (
+    ArrivalDetector,
+    ArrivalMonitor,
+    _configured_devices,
+    _record_arrival,
+)
+from lib._notify import accepts_event
+from service import Controller
 
 
 class ArrivalDetectorTests(unittest.TestCase):
@@ -26,6 +33,93 @@ class ArrivalDetectorTests(unittest.TestCase):
         self.assertFalse(detector.sample(False))
         self.assertFalse(detector.sample(True))
 
+    def test_accepts_up_to_three_devices(self):
+        devices = _configured_devices(
+            {
+                "devices": [
+                    {"id": "one", "mac": "00:00:00:00:00:01"},
+                    {"id": "two", "mac": "00:00:00:00:00:02"},
+                    {"id": "three", "mac": "00:00:00:00:00:03"},
+                ]
+            }
+        )
+        self.assertEqual(len(devices), 3)
+
+    def test_rejects_more_than_three_devices(self):
+        config = {
+            "devices": [
+                {"id": str(index), "mac": f"00:00:00:00:00:0{index}"}
+                for index in range(1, 5)
+            ]
+        }
+        with self.assertRaisesRegex(ValueError, "at most 3"):
+            _configured_devices(config)
+
+    @patch("lib._arrival_detection._build_router")
+    def test_monitor_emits_generic_arrived_event(self, _build_router):
+        events = []
+        monitor = ArrivalMonitor(
+            {
+                "devices": [
+                    {"id": "ignace", "mac": "00:00:00:00:00:01"}
+                ],
+                "polling": {"absent_after": 1, "present_after": 1},
+            },
+            events.append,
+        )
+        mac = "00:00:00:00:00:01"
+        monitor._process_states({mac: False})
+        monitor._process_states({mac: True})
+        self.assertEqual(
+            events,
+            [
+                {
+                    "sender": "_arrival_detection",
+                    "event": "arrived",
+                    "id": "ignace",
+                    "text": "",
+                }
+            ],
+        )
+
+    @patch("lib._arrival_detection._build_router")
+    def test_monitor_emits_departure_and_empty_after_last_device_leaves(self, _build_router):
+        events = []
+        monitor = ArrivalMonitor(
+            {
+                "devices": [
+                    {"id": "ignace", "mac": "00:00:00:00:00:01"},
+                    {"id": "janine", "mac": "00:00:00:00:00:02"},
+                ],
+                "polling": {"absent_after": 1, "present_after": 1},
+            },
+            events.append,
+        )
+        first = "00:00:00:00:00:01"
+        second = "00:00:00:00:00:02"
+        monitor._process_states({first: True, second: True})
+        self.assertEqual(events, [])
+        monitor._process_states({first: False, second: True})
+        self.assertEqual([event["event"] for event in events], ["departed"])
+        monitor._process_states({first: False, second: False})
+        self.assertEqual(
+            [(event["event"], event["id"]) for event in events],
+            [("departed", "ignace"), ("departed", "janine"), ("empty", "house")],
+        )
+
+    @patch("lib._arrival_detection._build_router")
+    def test_initially_empty_house_emits_no_events(self, _build_router):
+        events = []
+        monitor = ArrivalMonitor(
+            {
+                "devices": [{"id": "ignace", "mac": "00:00:00:00:00:01"}],
+                "polling": {"absent_after": 1, "present_after": 1},
+            },
+            events.append,
+        )
+        monitor._process_states({"00:00:00:00:00:01": False})
+        self.assertEqual(events, [])
+
 
 class MacTests(unittest.TestCase):
     def test_normalizes_common_formats(self):
@@ -57,38 +151,175 @@ class MacTests(unittest.TestCase):
         self.assertEqual(hosts[0].mac, "2c:db:07:50:2b:5c")
         self.assertTrue(router.is_connected("2c-db-07-50-2b-5c"))
 
+    def test_logs_only_the_first_successful_zyxel_connection(self):
+        router = ZyxelRouter("192.0.2.1", "user", "password")
+        with self.assertLogs("home_control.zyxel", level="INFO") as logs:
+            router._log_first_connection()
+            router._log_first_connection()
+        self.assertEqual(len(logs.output), 1)
+        self.assertIn("Connected successfully", logs.output[0])
+
+    def test_debug_logs_presence_result(self):
+        router = ZyxelRouter("192.0.2.1", "user", "password", debug=True)
+        router.get_lan_hosts = lambda: []
+        with self.assertLogs("home_control.zyxel", level="INFO") as logs:
+            self.assertFalse(router.is_connected("2c:db:07:50:2b:5c"))
+        self.assertIn("2c:db:07:50:2b:5c -> absent", logs.output[0])
+
 
 class NotificationTests(unittest.TestCase):
-    @patch("lib._arrival_detection.send_notification")
+    @patch("lib._cloud_logger.send_event")
-    def test_uses_notify_module(self, send_notification):
+    @patch("lib._notify.send_notification")
+    def test_controller_routes_event_to_multiple_actions(
+        self, send_notification, send_event
+    ):
         config = {
-            "notification": {
+            "controller": {
+                "plugins": {
+                    "source": {
+                        "module": "lib.example",
+                        "config": "source",
+                        "on_event": ["_notify", "_cloud_logger"],
+                    }
+                },
+                "actions": {
+                    "_notify": {
+                        "module": "lib._notify",
+                        "config": "notify",
+                    },
+                    "_cloud_logger": {
+                        "module": "lib._cloud_logger",
+                        "config": "cloud_logger",
+                    },
+                },
+            },
+            "source": {},
+            "notify": {"topic_url": "https://ntfy.example/home"},
+            "cloud_logger": {"event_url": "https://logger.example/event"},
+        }
+        message = {
+            "sender": "source",
+            "event": "arrived",
+            "id": "ignace",
+            "text": "hello",
+        }
+
+        Controller(config).handle_event(message)
+
+        send_notification.assert_called_once()
+        send_event.assert_called_once()
+        payload = send_event.call_args.args[0]
+        self.assertEqual(payload["sender"], "source")
+        self.assertEqual(payload["event"], "arrived")
+        self.assertEqual(payload["id"], "ignace")
+        self.assertEqual(payload["text"], "hello")
+        self.assertIn("datetime", payload)
+        self.assertEqual(
+            send_event.call_args.kwargs,
+            {"event_url": "https://logger.example/event", "timeout": 10.0},
+        )
+
+    @patch("lib._notify.send_notification")
+    def test_controller_routes_generic_event_to_notify(self, send_notification):
+        config = {
+            "controller": {
+                "plugins": {
+                    "_arrival_detection": {
+                        "module": "lib._arrival_detection",
+                        "config": "arrival_detection",
+                        "on_event": "_notify",
+                    }
+                },
+                "actions": {
+                    "_notify": {
+                        "module": "lib._notify",
+                        "handler": "on_event",
+                        "config": "notify",
+                    }
+                },
+            },
+            "arrival_detection": {},
+            "notify": {
                 "enabled": True,
-                "message": "Welcome home, {name} ({mac})",
+                "message": "Welcome home, {id}",
                 "topic_url": "https://ntfy.example/home",
                 "timeout": 4,
-            }
+            },
         }
-        _notify(config, {"name": "Ignace", "mac": "aa:bb:cc:dd:ee:ff"})
+        Controller(config).handle_event(
+            {
+                "sender": "_arrival_detection",
+                "event": "arrived",
+                "id": "ignace",
+                "text": "",
+            }
+        )
         send_notification.assert_called_once_with(
-            "Welcome home, Ignace (aa:bb:cc:dd:ee:ff)",
+            "Welcome home, ignace",
             topic_url="https://ntfy.example/home",
             timeout=4.0,
         )
 
-    @patch("lib._arrival_detection.send_notification")
+    def test_controller_has_no_plugin_specific_setup(self):
-    def test_appends_notification_to_event_log(self, send_notification):
+        config = {
+            "controller": {
+                "plugins": {
+                    "example": {
+                        "module": "lib.example",
+                        "factory": "build",
+                        "config": "example_settings",
+                        "on_event": "example_action",
+                    }
+                },
+                "actions": {},
+            },
+            "example_settings": {},
+        }
+        controller = Controller(config)
+        self.assertEqual(controller.plugin_specs["example"]["factory"], "build")
+
+    def test_notify_accept_filter(self):
+        config = {
+            "filter": {
+                "accept": {"events": ["arrived"], "ids": ["ignace"]},
+                "ignore": {"events": [], "ids": []},
+            }
+        }
+        self.assertTrue(
+            accepts_event(config, {"event": "arrived", "id": "ignace"})
+        )
+        self.assertFalse(
+            accepts_event(config, {"event": "departed", "id": "ignace"})
+        )
+        self.assertFalse(
+            accepts_event(config, {"event": "arrived", "id": "janine"})
+        )
+
+    def test_notify_ignore_filter_takes_precedence(self):
+        config = {
+            "filter": {
+                "accept": {"events": ["departed"], "ids": ["ignace"]},
+                "ignore": {"events": ["departed"], "ids": []},
+            }
+        }
+        self.assertFalse(
+            accepts_event(config, {"event": "departed", "id": "ignace"})
+        )
+
+    def test_monitor_appends_arrival_to_event_log(self):
         with TemporaryDirectory() as directory:
             event_log = Path(directory) / "arrivals.txt"
             config = {
-                "notification": {
+                "event_log": str(event_log),
-                    "enabled": True,
-                    "message": "{name} arrived home",
-                    "event_log": str(event_log),
-                }
             }
-            _notify(config, {"name": "Ignace", "mac": "aa:bb:cc:dd:ee:ff"})
+            _record_arrival(
-            self.assertTrue(event_log.read_text().endswith(" Ignace arrived home\n"))
+                config, {"id": "ignace", "mac": "aa:bb:cc:dd:ee:ff"}
+            )
+            self.assertTrue(
+                event_log.read_text().endswith(
+                    " ARRIVED id=ignace mac=aa:bb:cc:dd:ee:ff\n"
+                )
+            )
 
 
 if __name__ == "__main__":