# ----------------------------------------
# - mode: python -
# - author: helloplhm-qwq -
# - name: Httpx.py -
# - project: lx-music-api-server -
# - license: MIT -
# ----------------------------------------
# This file is part of the "lx-music-api-server" project.

import aiohttp
import requests
import random
import traceback
import zlib
import ujson as json
import re
import time
import pickle
from . import log
from . import config
from . import utils
from . import variable


def is_valid_utf8(text) -> bool:
    try:
        if isinstance(text, bytes):
            text = text.decode("utf-8")
        # 判断是否为有效的utf-8字符串
        if "\ufffe" in text:
            return False
        try:
            text.encode("utf-8").decode("utf-8")
            return True
        except UnicodeDecodeError:
            return False
    except:
        logger.error(traceback.format_exc())
        return False


def is_plain_text(text) -> bool:
    # 判断是否为纯文本
    pattern = re.compile(r"[^\x00-\x7F]")
    return not bool(pattern.search(text))


def convert_dict_to_form_string(dic: dict) -> str:
    # 将字典转换为表单字符串
    return "&".join([f"{k}={v}" for k, v in dic.items()])


def log_plaintext(text: str) -> str:
    if text.startswith("{") and text.endswith("}"):
        try:
            text = json.loads(text)
        except:
            pass
    elif text.startswith("<xml") and text.endswith(">"):  # xml data
        try:
            text = f"xml: {utils.load_xml(text)}"
        except:
            pass
    return text


# 内置的UA列表
ua_list = [
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.39",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1788.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1788.0  uacq",
    "Mozilla/5.0 (Windows NT 10.0; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5666.197 Safari/537.36",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 uacq",
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36",
]

# 日志记录器
logger = log.log("http_utils")


def request(url: str, options={}) -> requests.Response:
    """
    Http请求主函数, 用于发送网络请求
    - url: 需要请求的URL地址(必填)
    - options: 请求的配置参数(可选, 留空时为GET请求, 总体与nodejs的请求的options填写差不多)
        - method: 请求方法
        - headers: 请求头
        - body: 请求体(也可使用python原生requests库的data参数)
        - form: 提交的表单数据
        - cache: 缓存设置
                - no-cache: 不缓存
                - <int>: 缓存可用秒数
        - cache-ignore: <list> 缓存忽略关键字

    @ return: requests.Response类型的响应数据
    """
    # 缓存读取
    cache_key = f"{url}{options}"
    if isinstance(options.get("cache-ignore"), list):
        for i in options.get("cache-ignore"):
            cache_key = cache_key.replace(str(i), "")
        options.pop("cache-ignore")
    cache_key = utils.createMD5(cache_key)
    if options.get("cache") and options["cache"] != "no-cache":
        cache = config.getCache("httpx", cache_key)
        if cache:
            logger.debug(f"请求 {url} 有可用缓存")
            return pickle.loads(utils.createBase64Decode(cache["data"]))
    if "cache" in list(options.keys()):
        cache_info = options.get("cache")
        options.pop("cache")
    else:
        cache_info = None

    # 获取请求方法，没有则默认为GET请求
    try:
        method = options["method"].upper()
        options.pop("method")
    except Exception as e:
        method = "GET"
    # 获取User-Agent，没有则从ua_list中随机选择一个
    try:
        d_lower = {k.lower(): v for k, v in options["headers"].items()}
        useragent = d_lower["user-agent"]
    except:
        try:
            options["headers"]["User-Agent"] = random.choice(ua_list)
        except:
            options["headers"] = {}
            options["headers"]["User-Agent"] = random.choice(ua_list)
    # 检查是否在国内
    if (not variable.iscn) and (not options["headers"].get("X-Forwarded-For")):
        options["headers"]["X-Forwarded-For"] = variable.fakeip
    # 获取请求主函数
    try:
        reqattr = getattr(requests, method.lower())
    except AttributeError:
        raise AttributeError("Unsupported method: " + method)
    # 请求前记录
    logger.debug(f"HTTP Request: {url}\noptions: {options}")
    # 转换body/form参数为原生的data参数，并为form请求追加Content-Type头
    if (method == "POST") or (method == "PUT"):
        if options.get("body"):
            options["data"] = options["body"]
            options.pop("body")
        if options.get("form"):
            options["data"] = convert_dict_to_form_string(options["form"])
            options.pop("form")
            options["headers"]["Content-Type"] = "application/x-www-form-urlencoded"
        if isinstance(options["data"], dict):
            options["data"] = json.dumps(options["data"])
    # 进行请求
    try:
        logger.info("-----start----- " + url)
        req = reqattr(url, **options)
    except Exception as e:
        logger.error(f"HTTP Request runs into an Error: {log.highlight_error(traceback.format_exc())}")
        raise e
    # 请求后记录
    logger.debug(f"Request to {url} succeed with code {req.status_code}")
    if req.content.startswith(b"\x78\x9c") or req.content.startswith(b"\x78\x01"):  # zlib headers
        try:
            decompressed = zlib.decompress(req.content)
            if is_valid_utf8(decompressed):
                logger.debug(log_plaintext(decompressed.decode("utf-8")))
            else:
                logger.debug("response is not text binary, ignore logging it")
        except:
            logger.debug("response is not text binary, ignore logging it")
    else:
        if is_valid_utf8(req.content):
            logger.debug(log_plaintext(req.content.decode("utf-8")))
        else:
            logger.debug("response is not text binary, ignore logging it")
    # 缓存写入
    if cache_info and cache_info != "no-cache":
        cache_data = pickle.dumps(req)
        expire_time = cache_info if isinstance(cache_info, int) else 3600
        expire_at = int((time.time()) + expire_time)
        config.updateCache(
            "httpx",
            cache_key,
            {"expire": True, "time": expire_at, "data": utils.createBase64Encode(cache_data)},
            expire_time,
        )
        logger.debug("缓存已更新: " + url)

    def _json():
        return json.loads(req.content)

    setattr(req, "json", _json)
    # 返回请求
    return req


def checkcn():
    try:
        req = request("https://mips.kugou.com/check/iscn?&format=json")
        body = utils.CreateObject(req.json())
        variable.iscn = bool(body.flag)
        if not variable.iscn:
            variable.fakeip = config.read_config("common.fakeip")
            logger.info(f"您在非中国大陆服务器({body.country})上启动了项目，已自动开启ip伪装")
            logger.warning(
                "此方式无法解决咪咕音乐的链接获取问题，您可以配置代理，服务器地址可在下方链接中找到\nhttps://hidemy.io/cn/proxy-list/?country=CN#list"
            )
    except Exception as e:
        logger.warning("检查服务器位置失败，已忽略")
        logger.warning(traceback.format_exc())


class ClientResponse:
    # 这个类为了方便aiohttp响应与requests响应的跨类使用，也为了解决pickle无法缓存的问题
    def __init__(self, status, content, headers):
        self.status = status
        self.content = content
        self.headers = headers
        self.text = content.decode("utf-8", errors="ignore")

    def json(self):
        return json.loads(self.content)


async def convert_to_requests_response(aiohttp_response) -> ClientResponse:
    content = await aiohttp_response.content.read()  # 从aiohttp响应中读取字节数据
    status_code = aiohttp_response.status  # 获取状态码
    headers = dict(aiohttp_response.headers.items())  # 获取标头信息并转换为字典

    return ClientResponse(status_code, content, headers)


async def AsyncRequest(url, options={}) -> ClientResponse:
    """
    Http异步请求主函数, 用于发送网络请求
    - url: 需要请求的URL地址(必填)
    - options: 请求的配置参数(可选, 留空时为GET请求, 总体与nodejs的请求的options填写差不多)
        - method: 请求方法
        - headers: 请求头
        - body: 请求体(也可使用python原生requests库的data参数)
        - form: 提交的表单数据
        - cache: 缓存设置
                - no-cache: 不缓存
                - <int>: 缓存可用秒数
        - cache-ignore: <list> 缓存忽略关键字

    @ return: common.Httpx.ClientResponse类型的响应数据
    """
    if not variable.aioSession:
        variable.aioSession = aiohttp.ClientSession(trust_env=True)
    # 缓存读取
    cache_key = f"{url}{options}"
    if isinstance(options.get("cache-ignore"), list):
        for i in options.get("cache-ignore"):
            cache_key = cache_key.replace(str(i), "")
        options.pop("cache-ignore")
    cache_key = utils.createMD5(cache_key)
    if options.get("cache") and options["cache"] != "no-cache":
        cache = config.getCache("httpx_async", cache_key)
        if cache:
            logger.debug(f"请求 {url} 有可用缓存")
            c = pickle.loads(utils.createBase64Decode(cache["data"]))
            return c
    if "cache" in list(options.keys()):
        cache_info = options.get("cache")
        options.pop("cache")
    else:
        cache_info = None

    # 获取请求方法，没有则默认为GET请求
    try:
        method = options["method"]
        options.pop("method")
    except Exception as e:
        method = "GET"
    # 获取User-Agent，没有则从ua_list中随机选择一个
    try:
        d_lower = {k.lower(): v for k, v in options["headers"].items()}
        useragent = d_lower["user-agent"]
    except:
        try:
            options["headers"]["User-Agent"] = random.choice(ua_list)
        except:
            options["headers"] = {}
            options["headers"]["User-Agent"] = random.choice(ua_list)
    # 检查是否在国内
    if (not variable.iscn) and (not options["headers"].get("X-Forwarded-For")):
        options["headers"]["X-Forwarded-For"] = variable.fakeip
    # 获取请求主函数
    try:
        reqattr = getattr(variable.aioSession, method.lower())
    except AttributeError:
        raise AttributeError("Unsupported method: " + method)
    # 请求前记录
    logger.debug(f"HTTP Request: {url}\noptions: {options}")
    # 转换body/form参数为原生的data参数，并为form请求追加Content-Type头
    if (method == "POST") or (method == "PUT"):
        if options.get("body") is not None:
            options["data"] = options["body"]
            options.pop("body")
        if options.get("form") is not None:
            options["data"] = convert_dict_to_form_string(options["form"])
            options.pop("form")
            options["headers"]["Content-Type"] = "application/x-www-form-urlencoded"
        if isinstance(options.get("data"), dict):
            options["data"] = json.dumps(options["data"])
    # 进行请求
    try:
        logger.info("-----start----- " + url)
        req_ = await reqattr(url, **options)
    except Exception as e:
        logger.error(f"HTTP Request runs into an Error: {log.highlight_error(traceback.format_exc())}")
        raise e
    # 请求后记录
    logger.debug(f"Request to {url} succeed with code {req_.status}")
    # 为懒人提供的不用改代码移植的方法
    # 才不是梓澄呢
    req = await convert_to_requests_response(req_)
    if req.content.startswith(b"\x78\x9c") or req.content.startswith(b"\x78\x01"):  # zlib headers
        try:
            decompressed = zlib.decompress(req.content)
            if is_valid_utf8(decompressed):
                logger.debug(log_plaintext(decompressed.decode("utf-8")))
            else:
                logger.debug("response is not text binary, ignore logging it")
        except:
            logger.debug("response is not text binary, ignore logging it")
    else:
        if is_valid_utf8(req.content):
            logger.debug(log_plaintext(req.content.decode("utf-8")))
        else:
            logger.debug("response is not text binary, ignore logging it")
    # 缓存写入
    if cache_info and cache_info != "no-cache":
        cache_data = pickle.dumps(req)
        expire_time = cache_info if isinstance(cache_info, int) else 3600
        expire_at = int((time.time()) + expire_time)
        config.updateCache(
            "httpx_async",
            cache_key,
            {"expire": True, "time": expire_at, "data": utils.createBase64Encode(cache_data)},
            expire_time,
        )
        logger.debug("缓存已更新: " + url)
    # 返回请求
    return req