from dataclasses import dataclass, field
from datetime import datetime, timedelta
from typing import List

from appdaemon.entity import Entity
from appdaemon.plugins.hass.hassapi import Hass
from daylight_adjuster import DaylightAdjuster


@dataclass(init=False)
class ControllerEntities(Hass):
    entities: List[Entity]

    def initialize(self):
        # assign fields
        for arg, val in self.args.items():
            if arg not in ['class', 'module']:
                setattr(self, arg, val)
                # self.log(f'Set {arg} to {val}')

        for entity in self.entities:
            assert self.entity_exists(entity), f'{entity} does not exist'

        self.entities = [self.get_entity(e) for e in self.entities]


@dataclass(init=False)
class ControllerRoomLights(ControllerEntities):
    def initialize(self):
        super().initialize()
        self.log(f'Initialized light controller for {[e.friendly_name for e in self.entities]}')
        self.register_service(f'{self.name}/activate', self.activate)
        self.register_service(f'{self.name}/deactivate', self.deactivate)

    def activate(self, namespace: str = None, domain: str = None, service=None, kwargs=None):
        self.log(self.entities)
        for entity in self.entities:
            self.log(f'Turning on {entity.name}')
            entity.turn_on()

    def deactivate(self, namespace: str = None, domain: str = None, service=None, kwargs=None):
        self.log(self.entities)
        for entity in self.entities:
            self.log(f'Turning off {entity.name}')
            entity.turn_off()

    @property
    def state(self) -> bool:
        return any([e.get_state() == 'on' for e in self.entities])


@dataclass(init=False)
class ControllerMotion(ControllerEntities):
    room: ControllerRoomLights
    off_duration: timedelta

    def initialize(self):
        super().initialize()
        # self.log('Motion Controller init')

        # convert room to App
        self.room: ControllerRoomLights = self.get_app(self.room)

        # convert off_duration
        try:
            hours, minutes, seconds = map(int, self.args['off_duration'].split(':'))
            self.off_duration = timedelta(hours=hours, minutes=minutes, seconds=seconds)
        except Exception:
            self.off_duration = timedelta()

        if self.current_state:
            self.room.activate()

        self.listen_motion_off()
        self.listen_motion_on()

    @property
    def current_state(self) -> bool:
        return any(e.get_state() == 'on' for e in self.entities)

    def listen_motion_on(self):
        self.listen_state(
            callback=self.callback_motion_on,
            entity_id=[e.entity_id for e in self.entities],
            new='on',
        )
        self.log(f'Waiting for motion on {[e.friendly_name for e in self.entities]} to turn on room {self.room.name}')

    def listen_motion_off(self):
        self.listen_state(
            callback=self.callback_motion_off,
            entity_id=[e.entity_id for e in self.entities],
            new='off',
            duration=self.off_duration.total_seconds(),
        )
        self.log(f'Waiting for motion off {[e.friendly_name for e in self.entities]} for {self.off_duration}')

    def callback_motion_on(self, entity, attribute, old, new, kwargs):
        self.log(f'Motion detected on {self.friendly_name(entity)}')
        self.room.activate()

    def callback_motion_off(self, entity, attribute, old, new, kwargs):
        self.log(f'Motion stopped on {self.friendly_name(entity)} for {self.off_duration}')
        self.room.deactivate()


@dataclass(init=False)
class ControllerButton(Hass):
    room: ControllerRoomLights
    buttons: List[str]

    def initialize(self):
        self.buttons = self.args['buttons']

        # convert room to App
        self.room: ControllerRoomLights = self.get_app(self.args['room'])

        for button in self.buttons:
            self.listen_event(
                self.callback_button,
                event='deconz_event',
                id=button,
            )
            self.log(f'Listening to presses on button ID={button}')

    def callback_button(self, event_name, data, kwargs):
        # single press
        if data['event'] == 1002:
            self.log(f"Single press: {data['id']}")
            if self.room.state:
                self.room.deactivate()
            else:
                self.room.activate()


@dataclass(init=False)
class ControllerDaylight(ControllerEntities):
    latitude: float
    longitude: float

    def initialize(self):
        super().initialize()
        self.adjuster = DaylightAdjuster(
            latitude=self.args['latitude'],
            longitude=self.args['longitude'],
            periods=self.args['periods'],
            resolution=500
        )
        self.log(self.adjuster)

        self.listen_state(callback=self.handle_state_change, entity_id=[e.entity_id for e in self.entities])
        self.log(f'Listening for state {[e.friendly_name for e in self.entities]}')

        self.run_every(callback=self.update_sensors, start='now', interval=5.0)

    def handle_state_change(self, entity=None, attribute=None, old=None, new=None, kwargs=None):
        if new == 'on':
            self.adjustment_handle = self.run_every(
                callback=self.ongoing_adjustment,
                start='now',
                interval=10,
                entity=entity
            )
            self.log(f'Started adjustments')
        else:
            if hasattr(self, 'adjustment_handle'):
                self.cancel_timer(self.adjustment_handle)
                self.log(f'Cancelled adjustments')

    def matching_state(self, entity_id: str):
        state = self.get_state(entity_id=entity_id, attribute='all')['attributes']
        settings = self.adjuster.current_settings
        try:
            state = {s: state[s] for s in settings.keys()}
        except KeyError:
            return False
        else:
            valid = all((state[s] == val) for s, val in settings.items())
            return valid

    def ongoing_adjustment(self, kwargs):
        self.log(f'Ongoing adjustment')
        settings = self.adjuster.current_settings
        valid = self.matching_state(entity_id=kwargs['entity'])
        if not valid:
            self.turn_on(entity_id=kwargs['entity'], **settings)
            self.log(f'Adjusted {self.friendly_name(kwargs["entity"])} with {settings}')
    
    def update_sensors(self, kwargs):
        for key, val in self.adjuster.current_settings.items():
            id = f'sensor.{self.name}_{key}'
            self.set_state(
                entity_id=id, state=val,
                attributes={
                'friendly_name': f'Daylight, {key}, {self.name}',
                'state_class': 'measurement'})