#!/usr/bin/env python3
import include_homekit
import sys
import asyncio

from enum import Enum
from typing import Optional, Union
from telegram import ReplyKeyboardMarkup, User
from time import time
from datetime import datetime

from homekit.config import config, is_development_mode, AppConfigUnit
from homekit.telegram import bot
from homekit.telegram.config import TelegramBotConfig, TelegramUserListType
from homekit.telegram._botutil import user_any_name
from homekit.relay.sunxi_h3_client import RelayClient
from homekit.mqtt import MqttNode, MqttWrapper, MqttPayload, MqttNodesConfig, MqttModule
from homekit.mqtt.module.relay import MqttPowerStatusPayload, MqttRelayModule
from homekit.mqtt.module.temphum import MqttTemphumDataPayload
from homekit.mqtt.module.diagnostics import InitialDiagnosticsPayload, DiagnosticsPayload


if __name__ != '__main__':
    print(f'this script can not be imported as module', file=sys.stderr)
    sys.exit(1)


mqtt_nodes_config = MqttNodesConfig()


class PumpBotUserListType(TelegramUserListType):
    SILENT = 'silent_users'


class PumpBotConfig(AppConfigUnit, TelegramBotConfig):
    NAME = 'pump_bot'

    @classmethod
    def schema(cls) -> Optional[dict]:
        return {
            **super(TelegramBotConfig).schema(),
            PumpBotUserListType.SILENT: TelegramBotConfig._userlist_schema(),
            'watering_relay_node': {'type': 'string'},
            'pump_relay_addr': cls._addr_schema()
        }

    @staticmethod
    def custom_validator(data):
        relay_node_names = mqtt_nodes_config.get_nodes(filters=('relay',), only_names=True)
        if data['watering_relay_node'] not in relay_node_names:
            raise ValueError(f'unknown relay node "{data["watering_relay_node"]}"')


config.load_app(PumpBotConfig)

mqtt: MqttWrapper
mqtt_node: MqttNode
mqtt_relay_module: Union[MqttRelayModule, MqttModule]

time_format = '%d.%m.%Y, %H:%M:%S'

watering_mcu_status = {
    'last_time': 0,
    'last_boot_time': 0,
    'relay_opened': False,
    'ambient_temp': 0.0,
    'ambient_rh': 0.0,
}

bot.initialize()
bot.lang.ru(
    start_message="Выберите команду на клавиатуре",
    unknown_command="Неизвестная команда",

    enable="Включить",
    enable_silently="Включить тихо",
    enabled="Насос включен ✅",

    disable="Выключить",
    disable_silently="Выключить тихо",
    disabled="Насос выключен ❌",

    start_watering="Включить полив",
    stop_watering="Отключить полив",

    status="Статус насоса",
    watering_status="Статус полива",

    done="Готово 👌",
    sent="Команда отправлена",

    user_action_notification='Пользователь <a href="tg://user?id=%d">%s</a> <b>%s</b> насос.',
    user_watering_notification='Пользователь <a href="tg://user?id=%d">%s</a> <b>%s</b> полив.',
    user_action_on="включил",
    user_action_off="выключил",
    user_action_watering_on="включил",
    user_action_watering_off="выключил",
)
bot.lang.en(
    start_message="Select command on the keyboard",
    unknown_command="Unknown command",

    enable="Turn ON",
    enable_silently="Turn ON silently",
    enabled="The pump is turned ON ✅",

    disable="Turn OFF",
    disable_silently="Turn OFF silently",
    disabled="The pump is turned OFF ❌",

    start_watering="Start watering",
    stop_watering="Stop watering",

    status="Pump status",
    watering_status="Watering status",

    done="Done 👌",
    sent="Request sent",

    user_action_notification='User <a href="tg://user?id=%d">%s</a> turned the pump <b>%s</b>.',
    user_watering_notification='User <a href="tg://user?id=%d">%s</a> <b>%s</b> the watering.',
    user_action_on="ON",
    user_action_off="OFF",
    user_action_watering_on="started",
    user_action_watering_off="stopped",
)


class UserAction(Enum):
    ON = 'on'
    OFF = 'off'
    WATERING_ON = 'watering_on'
    WATERING_OFF = 'watering_off'


def get_relay() -> RelayClient:
    relay = RelayClient(host=config.app_config['pump_relay_addr'].host,
                        port=config.app_config['pump_relay_addr'].port)
    relay.connect()
    return relay


async def on(ctx: bot.Context, silent=False) -> None:
    get_relay().on()
    futures = [ctx.reply(ctx.lang('done'))]
    if not silent:
        futures.append(notify(ctx.user, UserAction.ON))
    await asyncio.gather(*futures)


async def off(ctx: bot.Context, silent=False) -> None:
    get_relay().off()
    futures = [ctx.reply(ctx.lang('done'))]
    if not silent:
        futures.append(notify(ctx.user, UserAction.OFF))
    await asyncio.gather(*futures)


async def watering_on(ctx: bot.Context) -> None:
    mqtt_relay_module.switchpower(True)
    await asyncio.gather(
        ctx.reply(ctx.lang('sent')),
        notify(ctx.user, UserAction.WATERING_ON)
    )


async def watering_off(ctx: bot.Context) -> None:
    mqtt_relay_module.switchpower(False)
    await asyncio.gather(
        ctx.reply(ctx.lang('sent')),
        notify(ctx.user, UserAction.WATERING_OFF)
    )


async def notify(user: User, action: UserAction) -> None:
    notification_key = 'user_watering_notification' if action in (UserAction.WATERING_ON, UserAction.WATERING_OFF) else 'user_action_notification'

    def text_getter(lang: str):
        action_name = bot.lang.get(f'user_action_{action.value}', lang)
        user_name = user_any_name(user)
        return 'ℹ ' + bot.lang.get(notification_key, lang,
                                   user.id, user_name, action_name)

    await bot.notify_all(text_getter, exclude=(user.id,))


@bot.handler(message='enable')
async def enable_handler(ctx: bot.Context) -> None:
    await on(ctx)


@bot.handler(message='enable_silently')
async def enable_s_handler(ctx: bot.Context) -> None:
    await on(ctx, True)


@bot.handler(message='disable')
async def disable_handler(ctx: bot.Context) -> None:
    await off(ctx)


@bot.handler(message='start_watering')
async def start_watering(ctx: bot.Context) -> None:
    await watering_on(ctx)


@bot.handler(message='stop_watering')
async def stop_watering(ctx: bot.Context) -> None:
    await watering_off(ctx)


@bot.handler(message='disable_silently')
async def disable_s_handler(ctx: bot.Context) -> None:
    await off(ctx, True)


@bot.handler(message='status')
async def status(ctx: bot.Context) -> None:
    await ctx.reply(
        ctx.lang('enabled') if get_relay().status() == 'on' else ctx.lang('disabled')
    )


def _get_timestamp_as_string(timestamp: int) -> str:
    if timestamp != 0:
        return datetime.fromtimestamp(timestamp).strftime(time_format)
    else:
        return 'unknown'


@bot.handler(message='watering_status')
async def watering_status(ctx: bot.Context) -> None:
    buf = ''
    if 0 < watering_mcu_status["last_time"] < time()-1800:
        buf += '<b>WARNING! long time no reports from mcu! maybe something\'s wrong</b>\n'
    buf += f'last report time: <b>{_get_timestamp_as_string(watering_mcu_status["last_time"])}</b>\n'
    if watering_mcu_status["last_boot_time"] != 0:
        buf += f'boot time: <b>{_get_timestamp_as_string(watering_mcu_status["last_boot_time"])}</b>\n'
    buf += 'relay opened: <b>' + ('yes' if watering_mcu_status['relay_opened'] else 'no') + '</b>\n'
    buf += f'ambient temp & humidity: <b>{watering_mcu_status["ambient_temp"]} °C, {watering_mcu_status["ambient_rh"]}%</b>'
    await ctx.reply(buf)


@bot.defaultreplymarkup
def markup(ctx: Optional[bot.Context]) -> Optional[ReplyKeyboardMarkup]:
    buttons = []
    if ctx.user_id in config.app_config.get_user_ids(PumpBotUserListType.SILENT):
        buttons.append([ctx.lang('enable_silently'), ctx.lang('disable_silently')])
    buttons.append([ctx.lang('enable'), ctx.lang('disable'), ctx.lang('status')],)
    buttons.append([ctx.lang('start_watering'), ctx.lang('stop_watering'), ctx.lang('watering_status')])

    return ReplyKeyboardMarkup(buttons, one_time_keyboard=False)


def mqtt_payload_callback(mqtt_node: MqttNode, payload: MqttPayload):
    global watering_mcu_status

    types_the_node_can_send = (
        InitialDiagnosticsPayload,
        DiagnosticsPayload,
        MqttTemphumDataPayload,
        MqttPowerStatusPayload
    )
    for cl in types_the_node_can_send:
        if isinstance(payload, cl):
            watering_mcu_status['last_time'] = int(time())
            break

    if isinstance(payload, InitialDiagnosticsPayload):
        watering_mcu_status['last_boot_time'] = int(time())

    elif isinstance(payload, MqttTemphumDataPayload):
        watering_mcu_status['ambient_temp'] = payload.temp
        watering_mcu_status['ambient_rh'] = payload.rh

    elif isinstance(payload, MqttPowerStatusPayload):
        watering_mcu_status['relay_opened'] = payload.opened


mqtt = MqttWrapper(client_id='pump_bot')
mqtt_node = MqttNode(node_id=config.app_config['watering_relay_node'])
if is_development_mode():
    mqtt_node.load_module('diagnostics')

mqtt_node.load_module('temphum')
mqtt_relay_module = mqtt_node.load_module('relay')

mqtt_node.add_payload_callback(mqtt_payload_callback)

mqtt.connect_and_loop(loop_forever=False)

bot.run()

try:
    mqtt.disconnect()
except:
    pass