"""Support for Sesame Japanese Version, by CANDY HOUSE."""
from __future__ import annotations

import aiohttp
import asyncio
import base64
import datetime
import pysesame2
import requests
import voluptuous as vol
from Crypto.Cipher import AES
from Crypto.Hash import CMAC

import homeassistant.helpers.config_validation as cv
from homeassistant.components.lock import PLATFORM_SCHEMA, LockEntity
from homeassistant.const import ATTR_BATTERY_LEVEL, ATTR_DEVICE_ID, CONF_NAME, CONF_API_KEY, CONF_DEVICE_ID, \
    CONF_CLIENT_SECRET
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType

ATTR_SERIAL_NO = "serial"

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
    vol.Required(CONF_NAME): cv.string,
    vol.Required(CONF_DEVICE_ID): cv.string,
    vol.Required(CONF_API_KEY): cv.string,
    vol.Required(CONF_CLIENT_SECRET): cv.string,
})


def setup_platform(
    hass: HomeAssistant,
    config: ConfigType,
    add_entities: AddEntitiesCallback,
    discovery_info: DiscoveryInfoType | None = None,
) -> None:
    name = config.get(CONF_NAME)
    device_id = config.get(CONF_DEVICE_ID)
    api_key = config.get(CONF_API_KEY)
    client_secret = config.get(CONF_CLIENT_SECRET)

    add_entities(
        [SesameJPDevice(
            name=name,
            uuid=device_id,
            api_key=api_key,
            secret_key=client_secret,
        )],
        update_before_add=True,
    )


class SesameJPDevice(LockEntity):
    def __init__(
            self,
            name,
            uuid,
            api_key,
            secret_key,
    ) -> None:
        self._name: str = name
        self._uuid: str = uuid
        self._api_key: str = api_key
        self._secret_key: str = secret_key
        self._is_locked = False
        self._responsive = False
        self._battery = -1
        self.update()

    @property
    def name(self) -> str | None:
        return self._name

    @property
    def available(self) -> bool:
        return self._responsive

    @property
    def is_locked(self) -> bool:
        return self._is_locked

    def lock(self, **kwargs) -> None:
        asyncio.run(self._sesame_command(action="LOCK"))

    def unlock(self, **kwargs) -> None:
        asyncio.run(self._sesame_command(action="UNLOCK"))

    def open(self, **kwargs) -> None:
        asyncio.run(self._sesame_command(action="UNLOCK"))

    def update(self) -> None:
        response = requests.get(
            "https://app.candyhouse.co/api/sesame2/{sesame2_uuid}".format(sesame2_uuid=self._uuid),
            headers={
                "x-api-key": self._api_key,
            },
        )
        state = response.json()

        if state:
            self._responsive = True

            if state['CHSesame2Status'] == "locked":
                self._is_locked = True
            else:
                self._is_locked = False
            self._battery = state['batteryPercentage']
        else:
            self._responsive = False

    @property
    def extra_state_attributes(self) -> dict:
        return {}

    # def _sesame_history(self) -> None:
    #     response = requests.get(
    #         "https://app.candyhouse.co/api/sesame2/{sesame2_uuid}/history?page=0&lg=1".format(sesame2_uuid=self._uuid),
    #         headers={
    #             "x-api-key": self._api_key,
    #         },
    #     )
    #     return response.json()

    async def _sesame_command(self, action) -> None:
        if action == "LOCK":
            cmd = 82
        elif action == "UNLOCK":
            cmd = 83
        else:
            return

        ts = int(datetime.datetime.now().timestamp())
        message = ts.to_bytes(4, byteorder='little')
        message = message.hex()[2:8]
        cmac = CMAC.new(bytes.fromhex(self._secret_key), ciphermod=AES)
        cmac.update(bytes.fromhex(message))
        sign = cmac.hexdigest()

        async with aiohttp.request(
            "POST",
            "https://app.candyhouse.co/api/sesame2/{sesame2_uuid}/cmd".format(sesame2_uuid=self._uuid),
            headers={
                "x-api-key": self._api_key,
            },
            json={
                "cmd": cmd,
                "history": base64.b64encode(bytes("Home-Assistant {action}".format(action=action), 'utf-8')).decode(),
                "sign": sign,
            },
        ) as resp:
            await resp.text()