smart_home.py

import uuid

class SmartDevice:

    def __init__(self, device_id, name, location):

        self.id = device_id or str(uuid.uuid4())

        self.name = name

        self.location = location

        self._status = "Inactive"

    def get_status(self):

        return {

            "id": self.id,

            "name": self.name,

            "location": self.location,

            "status": self._status

        }

    def get_id(self):

        return self.id

    def __str__(self):

        return f"{self.name} [{self.location}] :: {self._status}"

class SmartLight(SmartDevice):

    def __init__(self, device_id, name, location, is_on=False, brightness=100):

        super().__init__(device_id, name, location)

        self._is_on = is_on

        self._brightness = max(0, min(brightness, 100))

        self._refresh()

    def _refresh(self):

        self._status = f"Light {'ON' if self._is_on else 'OFF'}, Brightness: {self._brightness}%"

    def turn_on(self):

        self._is_on = True

        self._refresh()

    def turn_off(self):

        self._is_on = False

        self._refresh()

    def toggle(self):

        self._is_on = not self._is_on

        self._refresh()

    def set_brightness(self, level):

        self._brightness = max(0, min(int(level), 100))

        self._refresh()

    def get_status(self):

        data = super().get_status()

        data.update({"is_on": self._is_on, "brightness": self._brightness})

        return data

class SmartThermostat(SmartDevice):

    MODES = {"Off", "Heat", "Cool", "Auto"}

    def __init__(self, device_id, name, location, current_temp=70.0, target_temp=72.0, mode="Off"):

        super().__init__(device_id, name, location)

        self._current_temp = float(current_temp)

        self._target_temp = float(target_temp)

        self._mode = mode if mode in self.MODES else "Off"

        self._is_running = False

        self._refresh()

    def _refresh(self):

        active = "Running" if self._is_running else "Idle"

        self._status = f"{self._mode} Mode - {active} - {self._current_temp}/{self._target_temp}F"

    def set_target_temperature(self, temp):

        self._target_temp = float(temp)

        self._evaluate()

    def set_mode(self, mode):

        if mode in self.MODES:

            self._mode = mode

            self._evaluate()

    def update_ambient_temperature(self, temp):

        self._current_temp = float(temp)

        self._evaluate()

    def _evaluate(self):

        self._is_running = False

        if self._mode == "Heat" and self._current_temp < self._target_temp:

            self._is_running = True

        elif self._mode == "Cool" and self._current_temp > self._target_temp:

            self._is_running = True

        elif self._mode == "Auto":

            delta = self._target_temp - self._current_temp

            self._is_running = abs(delta) > 1

        self._refresh()

    def get_status(self):

        data = super().get_status()

        data.update({

            "current_temperature": self._current_temp,

            "target_temperature": self._target_temp,

            "mode": self._mode,

            "is_running": self._is_running

        })

        return data

class DeviceHub:

    def __init__(self):

        self._devices = {}

    def connect(self, device):

        if not isinstance(device, SmartDevice):

            return

        if device.get_id() in self._devices:

            return

        self._devices[device.get_id()] = device

    def get(self, device_id):

        return self._devices.get(device_id)

    def all_devices(self):

        return list(self._devices.values())

    def by_location(self, location):

        return [d for d in self._devices.values() if d.location == location]

    def status_report(self):

        print("\n=== SMART HOME STATUS REPORT ===")

        for device in self._devices.values():

            print(device)

        print("================================\n")

hub = DeviceHub()

light1 = SmartLight("A1", "Ceiling Light", "Living Room")

light2 = SmartLight("B2", "Table Lamp", "Bedroom", is_on=True, brightness=40)

thermostat = SmartThermostat("C3", "Nest Thermostat", "Hallway", current_temp=68, target_temp=72, mode="Auto")

hub.connect(light1)

hub.connect(light2)

hub.connect(thermostat)

hub.status_report()

light1.turn_on()

light1.set_brightness(60)

light2.toggle()

thermostat.update_ambient_temperature(66)

thermostat.set_mode("Heat")

hub.status_report()