import hashlib
import os
from asyncio import create_subprocess_shell
from asyncio.subprocess import PIPE
from pathlib import Path
from typing import Optional, Tuple, TypeVar, Union, cast

import aiofiles
import genshin
import httpx
from genshin import Client, types
from httpx import UnsupportedProtocol
from typing_extensions import ParamSpec

from core.bot import bot
from core.cookies.services import CookiesService, PublicCookiesService
from core.error import ServiceNotFoundError
from core.user.services import UserService
from utils.error import UrlResourcesNotFoundError
from utils.log import logger
from utils.models.base import RegionEnum

T = TypeVar('T')
P = ParamSpec('P')

USER_AGENT: str = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) " \
                  "Chrome/90.0.4430.72 Safari/537.36"
REQUEST_HEADERS: dict = {'User-Agent': USER_AGENT}
current_dir = os.getcwd()
cache_dir = os.path.join(current_dir, "cache")
if not os.path.exists(cache_dir):
    os.mkdir(cache_dir)

cookies_service = bot.services.get(CookiesService)
cookies_service = cast(CookiesService, cookies_service)
user_service = bot.services.get(UserService)
user_service = cast(UserService, user_service)
public_cookies_service = bot.services.get(PublicCookiesService)
public_cookies_service = cast(PublicCookiesService, public_cookies_service)

REGION_MAP = {
    "1": RegionEnum.HYPERION,
    "2": RegionEnum.HYPERION,
    "5": RegionEnum.HYPERION,
    "6": RegionEnum.HOYOLAB,
    "7": RegionEnum.HOYOLAB,
    "8": RegionEnum.HOYOLAB,
    "9": RegionEnum.HOYOLAB,
}


def sha1(text: str) -> str:
    _sha1 = hashlib.sha1()
    _sha1.update(text.encode())
    return _sha1.hexdigest()


async def url_to_file(url: str, return_path: bool = False) -> str:
    url_sha1 = sha1(url)
    url_file_name = os.path.basename(url)
    _, extension = os.path.splitext(url_file_name)
    temp_file_name = url_sha1 + extension
    file_dir = os.path.join(cache_dir, temp_file_name)
    if not os.path.exists(file_dir):
        async with httpx.AsyncClient(headers=REQUEST_HEADERS) as client:
            try:
                data = await client.get(url)
            except UnsupportedProtocol:
                logger.error(f"连接不支持 url[{url}]")
                return ""
        if data.is_error:
            logger.error(f"请求出现错误 url[{url}] status_code[{data.status_code}]")
            raise UrlResourcesNotFoundError(url)
        if data.status_code != 200:
            logger.error(f"url_to_file 获取url[{url}] 错误 status_code[f{data.status_code}]")
            raise UrlResourcesNotFoundError(url)
        async with aiofiles.open(file_dir, mode='wb') as f:
            await f.write(data.content)
    logger.debug(f"url_to_file 获取url[{url}] 并下载到 file_dir[{file_dir}]")

    if return_path:
        return file_dir

    return Path(file_dir).as_uri()


async def get_genshin_client(user_id: int, region: Optional[RegionEnum] = None, need_cookie: bool = True) -> Client:
    if user_service is None:
        raise ServiceNotFoundError(UserService)
    if cookies_service is None:
        raise ServiceNotFoundError(CookiesService)
    user = await user_service.get_user_by_id(user_id)
    if region is None:
        region = user.region
    cookies = None
    if need_cookie:
        cookies = await cookies_service.get_cookies(user_id, region)
        cookies = cookies.cookies
    if region == RegionEnum.HYPERION:
        uid = user.yuanshen_uid
        client = genshin.Client(cookies=cookies, game=types.Game.GENSHIN, region=types.Region.CHINESE, uid=uid)
    elif region == RegionEnum.HOYOLAB:
        uid = user.genshin_uid
        client = genshin.Client(cookies=cookies,
                                game=types.Game.GENSHIN, region=types.Region.OVERSEAS, lang="zh-cn", uid=uid)
    else:
        raise TypeError("region is not RegionEnum.NULL")
    return client


async def get_public_genshin_client(user_id: int) -> Tuple[Client, Optional[int]]:
    if user_service is None:
        raise ServiceNotFoundError(UserService)
    if public_cookies_service is None:
        raise ServiceNotFoundError(PublicCookiesService)
    user = await user_service.get_user_by_id(user_id)
    region = user.region
    cookies = await public_cookies_service.get_cookies(user_id, region)
    if region == RegionEnum.HYPERION:
        uid = user.yuanshen_uid
        client = genshin.Client(cookies=cookies.cookies, game=types.Game.GENSHIN, region=types.Region.CHINESE)
    elif region == RegionEnum.HOYOLAB:
        uid = user.genshin_uid
        client = genshin.Client(cookies=cookies.cookies,
                                game=types.Game.GENSHIN, region=types.Region.OVERSEAS, lang="zh-cn")
    else:
        raise TypeError("region is not RegionEnum.NULL")
    return client, uid


def region_server(uid: Union[int, str]) -> RegionEnum:
    if isinstance(uid, int):
        region = REGION_MAP.get(str(uid)[0])
    elif isinstance(uid, str):
        region = REGION_MAP.get(str(uid)[0])
    else:
        raise TypeError("UID variable type error")
    if region:
        return region
    else:
        raise TypeError(f"UID {uid} isn't associated with any region")


async def execute(command, pass_error=True):
    """ Executes command and returns output, with the option of enabling stderr. """
    executor = await create_subprocess_shell(
        command,
        stdout=PIPE,
        stderr=PIPE,
        stdin=PIPE
    )

    stdout, stderr = await executor.communicate()
    if pass_error:
        try:
            result = str(stdout.decode().strip()) \
                     + str(stderr.decode().strip())
        except UnicodeDecodeError:
            result = str(stdout.decode('gbk').strip()) \
                     + str(stderr.decode('gbk').strip())
    else:
        try:
            result = str(stdout.decode().strip())
        except UnicodeDecodeError:
            result = str(stdout.decode('gbk').strip())
    return result