from os import replace
import requests
#import hashlib
from pathlib import Path
import secrets
import os.path
import os
import uuid
import json
import time
from lxml import etree
import re
import config
from urllib.parse import urljoin
import mechanicalsoup
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
from cloudscraper import create_scraper
from concurrent.futures import ThreadPoolExecutor


def getXpathSingle(htmlcode, xpath):
    html = etree.fromstring(htmlcode, etree.HTMLParser())
    result1 = str(html.xpath(xpath)).strip(" ['']")
    return result1


G_USER_AGENT = r'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36'

# 网页请求核心
def get_html(url, cookies: dict = None, ua: str = None, return_type: str = None, encoding: str = None):
    verify = config.getInstance().cacert_file()
    configProxy = config.getInstance().proxy()
    errors = ""

    headers = {"User-Agent": ua or G_USER_AGENT}  # noqa

    for i in range(configProxy.retry):
        try:
            if configProxy.enable:
                proxies = configProxy.proxies()
                result = requests.get(str(url), headers=headers, timeout=configProxy.timeout, proxies=proxies, verify=verify,
                                      cookies=cookies)
            else:
                result = requests.get(str(url), headers=headers, timeout=configProxy.timeout, cookies=cookies)

            if return_type == "object":
                return result
            elif return_type == "content":
                return result.content
            else:
                result.encoding = encoding or result.apparent_encoding
                return result.text
        except Exception as e:
            print("[-]Connect retry {}/{}".format(i + 1, configProxy.retry))
            errors = str(e)
    if "getaddrinfo failed" in errors:
        print("[-]Connect Failed! Please Check your proxy config")
        debug = config.getInstance().debug()
        if debug:
            print("[-]" + errors)
    else:
        print("[-]" + errors)
        print('[-]Connect Failed! Please check your Proxy or Network!')
    raise Exception('Connect Failed')


def post_html(url: str, query: dict, headers: dict = None) -> requests.Response:
    configProxy = config.getInstance().proxy()
    errors = ""
    headers_ua = {"User-Agent": G_USER_AGENT}
    if headers is None:
        headers = headers_ua
    else:
        headers.update(headers_ua)

    for i in range(configProxy.retry):
        try:
            if configProxy.enable:
                proxies = configProxy.proxies()
                result = requests.post(url, data=query, proxies=proxies, headers=headers, timeout=configProxy.timeout)
            else:
                result = requests.post(url, data=query, headers=headers, timeout=configProxy.timeout)
            return result
        except Exception as e:
            print("[-]Connect retry {}/{}".format(i + 1, configProxy.retry))
            errors = str(e)
    print("[-]Connect Failed! Please check your Proxy or Network!")
    print("[-]" + errors)


G_DEFAULT_TIMEOUT = 10 # seconds

class TimeoutHTTPAdapter(HTTPAdapter):
    def __init__(self, *args, **kwargs):
        self.timeout = G_DEFAULT_TIMEOUT
        if "timeout" in kwargs:
            self.timeout = kwargs["timeout"]
            del kwargs["timeout"]
        super().__init__(*args, **kwargs)
    def send(self, request, **kwargs):
        timeout = kwargs.get("timeout")
        if timeout is None:
            kwargs["timeout"] = self.timeout
        return super().send(request, **kwargs)


#  with keep-alive feature
def get_html_session(url:str = None, cookies: dict = None, ua: str = None, return_type: str = None, encoding: str = None):
    configProxy = config.getInstance().proxy()
    session = requests.Session()
    if isinstance(cookies, dict) and len(cookies):
        requests.utils.add_dict_to_cookiejar(session.cookies, cookies)
    retries = Retry(total=configProxy.retry, connect=configProxy.retry, backoff_factor=1, status_forcelist=[429, 500, 502, 503, 504])
    session.mount("https://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    session.mount("http://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    if configProxy.enable:
        session.verify = config.getInstance().cacert_file()
        session.proxies = configProxy.proxies()
    headers = {"User-Agent": ua or G_USER_AGENT}
    session.headers = headers
    try:
        if isinstance(url, str) and len(url):
            result = session.get(str(url))
        else: # 空url参数直接返回可重用session对象，无需设置return_type
            return session
        if not result.ok:
            return None
        if return_type == "object":
            return result
        elif return_type == "content":
            return result.content
        elif return_type == "session":
            return result, session
        else:
            result.encoding = encoding or "utf-8"
            return result.text
    except requests.exceptions.ProxyError:
        print("[-]get_html_session() Proxy error! Please check your Proxy")
    except Exception as e:
        print(f"[-]get_html_session() failed. {e}")
    return None


def get_html_by_browser(url:str = None, cookies: dict = None, ua: str = None, return_type: str = None, encoding: str = None, use_scraper: bool = False):
    configProxy = config.getInstance().proxy()
    s = create_scraper(browser={'custom': ua or G_USER_AGENT,}) if use_scraper else requests.Session()
    if isinstance(cookies, dict) and len(cookies):
        requests.utils.add_dict_to_cookiejar(s.cookies, cookies)
    retries = Retry(total=configProxy.retry, connect=configProxy.retry, backoff_factor=1, status_forcelist=[429, 500, 502, 503, 504])
    s.mount("https://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    s.mount("http://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    if configProxy.enable:
        s.verify = config.getInstance().cacert_file()
        s.proxies = configProxy.proxies()
    try:
        browser = mechanicalsoup.StatefulBrowser(user_agent=ua or G_USER_AGENT, session=s)
        if isinstance(url, str) and len(url):
            result = browser.open(url)
        else:
            return browser
        if not result.ok:
            return None

        if return_type == "object":
            return result
        elif return_type == "content":
            return result.content
        elif return_type == "browser":
            return result, browser
        else:
            result.encoding = encoding or "utf-8"
            return result.text
    except requests.exceptions.ProxyError:
        print("[-]get_html_by_browser() Proxy error! Please check your Proxy")
    except Exception as e:
        print(f'[-]get_html_by_browser() Failed! {e}')
    return None


def get_html_by_form(url, form_select: str = None, fields: dict = None, cookies: dict = None, ua: str = None, return_type: str = None, encoding: str = None):
    configProxy = config.getInstance().proxy()
    s = requests.Session()
    if isinstance(cookies, dict) and len(cookies):
        requests.utils.add_dict_to_cookiejar(s.cookies, cookies)
    retries = Retry(total=configProxy.retry, connect=configProxy.retry, backoff_factor=1, status_forcelist=[429, 500, 502, 503, 504])
    s.mount("https://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    s.mount("http://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    if configProxy.enable:
        s.verify = config.getInstance().cacert_file()
        s.proxies = configProxy.proxies()
    try:
        browser = mechanicalsoup.StatefulBrowser(user_agent=ua or G_USER_AGENT, session=s)
        result = browser.open(url)
        if not result.ok:
            return None
        form = browser.select_form() if form_select is None else browser.select_form(form_select)
        if isinstance(fields, dict):
            for k, v in fields.items():
                browser[k] = v
        response = browser.submit_selected()

        if return_type == "object":
            return response
        elif return_type == "content":
            return response.content
        elif return_type == "browser":
            return response, browser
        else:
            result.encoding = encoding or "utf-8"
            return response.text
    except requests.exceptions.ProxyError:
        print("[-]get_html_by_form() Proxy error! Please check your Proxy")
    except Exception as e:
        print(f'[-]get_html_by_form() Failed! {e}')
    return None


def get_html_by_scraper(url:str = None, cookies: dict = None, ua: str = None, return_type: str = None, encoding: str = None):
    configProxy = config.getInstance().proxy()
    session = create_scraper(browser={'custom': ua or G_USER_AGENT,})
    if isinstance(cookies, dict) and len(cookies):
        requests.utils.add_dict_to_cookiejar(session.cookies, cookies)
    retries = Retry(total=configProxy.retry, connect=configProxy.retry, backoff_factor=1, status_forcelist=[429, 500, 502, 503, 504])
    session.mount("https://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    session.mount("http://", TimeoutHTTPAdapter(max_retries=retries, timeout=configProxy.timeout))
    if configProxy.enable:
        session.verify = config.getInstance().cacert_file()
        session.proxies = configProxy.proxies()
    try:
        if isinstance(url, str) and len(url):
            result = session.get(str(url))
        else: # 空url参数直接返回可重用scraper对象，无需设置return_type
            return session
        if not result.ok:
            return None
        if return_type == "object":
            return result
        elif return_type == "content":
            return result.content
        elif return_type == "scraper":
            return result, session
        else:
            result.encoding = encoding or "utf-8"
            return result.text
    except requests.exceptions.ProxyError:
        print("[-]get_html_by_scraper() Proxy error! Please check your Proxy")
    except Exception as e:
        print(f"[-]get_html_by_scraper() failed. {e}")
    return None


# def get_javlib_cookie() -> [dict, str]:
#     import cloudscraper
#     switch, proxy, timeout, retry_count, proxytype = config.getInstance().proxy()
#     proxies = get_proxy(proxy, proxytype)
#
#     raw_cookie = {}
#     user_agent = ""
#
#     # Get __cfduid/cf_clearance and user-agent
#     for i in range(retry_count):
#         try:
#             if switch == 1 or switch == '1':
#                 raw_cookie, user_agent = cloudscraper.get_cookie_string(
#                     "http://www.javlibrary.com/",
#                     proxies=proxies
#                 )
#             else:
#                 raw_cookie, user_agent = cloudscraper.get_cookie_string(
#                     "http://www.javlibrary.com/"
#                 )
#         except requests.exceptions.ProxyError:
#             print("[-] ProxyError, retry {}/{}".format(i + 1, retry_count))
#         except cloudscraper.exceptions.CloudflareIUAMError:
#             print("[-] IUAMError, retry {}/{}".format(i + 1, retry_count))
#
#     return raw_cookie, user_agent


def translate(
        src: str,
        target_language: str = "zh_cn",
        engine: str = "google-free",
        app_id: str = "",
        key: str = "",
        delay: int = 0,
):
    trans_result = ""
    # 中文句子如果包含&等符号会被谷歌翻译截断损失内容，而且中文翻译到中文也没有意义，故而忽略，只翻译带有日语假名的
    if not is_japanese(src):
        return src
    if engine == "google-free":
        gsite = config.getInstance().get_translate_service_site()
        if not re.match('^translate\.google\.(com|com\.\w{2}|\w{2})$', gsite):
            gsite = 'translate.google.cn'
        url = (
f"https://{gsite}/translate_a/single?client=gtx&dt=t&dj=1&ie=UTF-8&sl=auto&tl={target_language}&q={src}"
        )
        result = get_html(url=url, return_type="object")
        if not result.ok:
            print('[-]Google-free translate web API calling failed.')
            return ''

        translate_list = [i["trans"] for i in result.json()["sentences"]]
        trans_result = trans_result.join(translate_list)
    elif engine == "azure":
        url = "https://api.cognitive.microsofttranslator.com/translate?api-version=3.0&to=" + target_language
        headers = {
            'Ocp-Apim-Subscription-Key': key,
            'Ocp-Apim-Subscription-Region': "global",
            'Content-type': 'application/json',
            'X-ClientTraceId': str(uuid.uuid4())
        }
        body = json.dumps([{'text': src}])
        result = post_html(url=url, query=body, headers=headers)
        translate_list = [i["text"] for i in result.json()[0]["translations"]]
        trans_result = trans_result.join(translate_list)

    else:
        raise ValueError("Non-existent translation engine")

    time.sleep(delay)
    return trans_result


# 从浏览器中导出网站登录验证信息的cookies，能够以会员方式打开游客无法访问到的页面
# 示例: FC2-755670 url https://javdb9.com/v/vO8Mn
# json 文件格式
# 文件名: 站点名.json，示例 javdb9.json
# 内容(文件编码:UTF-8)：
'''
{
    "over18":"1",
    "redirect_to":"%2Fv%2FvO8Mn",
    "remember_me_token":"cbJdeaFpbHMiOnsibWVzc2FnZSI6IklrNVJjbTAzZFVSRVlVaEtPWEpUVFhOVU0yNXhJZz09IiwiZXhwIjoiMjAyMS0wNS0xNVQxMzoyODoxNy4wMDBaIiwicHVyIjoiY29va2llLnJlbWVtYmVyX21lX3Rva2VuIn19--a7131611e844cf75f9db4cd411b635889bff3fe3",
    "_jdb_session":"asddefqfwfwwrfdsdaAmqKj1%2FvOrDQP4b7h%2BvGp7brvIShi2Y%2FHBUr%2BklApk06TfhBOK3g5gRImZzoi49GINH%2FK49o3W%2FX64ugBiUAcudN9b27Mg6Ohu%2Bx9Z7A4bbqmqCt7XR%2Bao8PRuOjMcdDG5czoYHJCPIPZQFU28Gd7Awc2jc5FM5CoIgSRyaYDy9ulTO7DlavxoNL%2F6OFEL%2FyaA6XUYTB2Gs1kpPiUDqwi854mo5%2FrNxMhTeBK%2BjXciazMtN5KlE5JIOfiWAjNrnx7SV3Hj%2FqPNxRxXFQyEwHr5TZa0Vk1%2FjbwWQ0wcIFfh%2FMLwwqKydAh%2FLndc%2Bmdv3e%2FJ%2BiL2--xhqYnMyVRlxJajdN--u7nl0M7Oe7tZtPd4kIaEbg%3D%3D",
    "locale":"zh",
    "__cfduid":"dee27116d98c432a5cabc1fe0e7c2f3c91620479752",
    "theme":"auto"
}
'''
# 从网站登录后，通过浏览器插件(CookieBro或EdittThisCookie)或者直接在地址栏网站链接信息处都可以复制或者导出cookie内容，
# 并填写到以上json文件的相应字段中
def load_cookies(filename):
    filename = os.path.basename(filename)
    if not len(filename):
        return None, None
    path_search_order = (
        Path.cwd() / filename,
        Path.home() / filename,
        Path.home() / f".mdc/{filename}",
        Path.home() / f".local/share/mdc/{filename}"
    )
    cookies_filename = None
    try:
        for p in path_search_order:
            if p.is_file():
                cookies_filename = str(p.resolve())
                break
        if not cookies_filename:
            return None, None
        return json.load(open(cookies_filename)), cookies_filename
    except:
        return None, None

# 文件修改时间距此时的天数
def file_modification_days(filename) -> int:
    mfile = Path(filename)
    if not mfile.is_file():
        return 9999
    mtime = int(mfile.stat().st_mtime)
    now = int(time.time())
    days = int((now - mtime) / (24 * 60 * 60))
    if days < 0:
        return 9999
    return days

def file_not_exist_or_empty(filepath) -> bool:
    return not os.path.isfile(filepath) or os.path.getsize(filepath) == 0

# 日语简单检测
def is_japanese(s) -> bool:
    return bool(re.search(r'[\u3040-\u309F\u30A0-\u30FF\uFF66-\uFF9F]', s, re.UNICODE))


# Usage: python ./ADC_function.py https://cn.bing.com/
if __name__ == "__main__":
    import sys, timeit
    from http.client import HTTPConnection
    def benchmark(t, url):
        print(f"HTTP GET Benchmark times:{t} url:{url}")
        tm = timeit.timeit(f"_ = session1.get('{url}')",
            "from __main__ import get_html_session;session1=get_html_session()",
            number=t)
        print(f' *{tm:>10.5f}s get_html_session() Keep-Alive enable')
        tm = timeit.timeit(f"_ = scraper1.get('{url}')",
            "from __main__ import get_html_by_scraper;scraper1=get_html_by_scraper()",
            number=t)
        print(f' *{tm:>10.5f}s get_html_by_scraper() Keep-Alive enable')
        tm = timeit.timeit(f"_ = browser1.open('{url}')",
            "from __main__ import get_html_by_browser;browser1=get_html_by_browser()",
            number=t)
        print(f' *{tm:>10.5f}s get_html_by_browser() Keep-Alive enable')
        tm = timeit.timeit(f"_ = get_html('{url}')",
            "from __main__ import get_html",
            number=t)
        print(f' *{tm:>10.5f}s get_html()')
    t = 100
    #url = "https://www.189.cn/"
    url = "http://www.chinaunicom.com"
    HTTPConnection.debuglevel = 1
    s = get_html_session()
    _ = s.get(url)
    HTTPConnection.debuglevel = 0
    if len(sys.argv)>1:
        url = sys.argv[1]
    benchmark(t, url)

def download_file_with_filename(url, filename, path):
    conf = config.getInstance()
    configProxy = conf.proxy()

    for i in range(configProxy.retry):
        try:
            if configProxy.enable:
                if not os.path.exists(path):
                    try:
                        os.makedirs(path)
                    except:
                        print(f"[-]Fatal error! Can not make folder '{path}'")
                        sys.exit(0)
                proxies = configProxy.proxies()
                headers = {
                    'User-Agent': G_USER_AGENT}
                r = requests.get(url, headers=headers, timeout=configProxy.timeout, proxies=proxies)
                if r == '':
                    print('[-]Movie Download Data not found!')
                    return
                with open(os.path.join(path, filename), "wb") as code:
                    code.write(r.content)
                return
            else:
                if not os.path.exists(path):
                    try:
                        os.makedirs(path)
                    except:
                        print(f"[-]Fatal error! Can not make folder '{path}'")
                        sys.exit(0)
                headers = {
                    'User-Agent': G_USER_AGENT}
                r = requests.get(url, timeout=configProxy.timeout, headers=headers)
                if r == '':
                    print('[-]Movie Download Data not found!')
                    return
                with open(os.path.join(path, filename), "wb") as code:
                    code.write(r.content)
                return
        except requests.exceptions.RequestException:
            i += 1
            print('[-]Download :  Connect retry ' + str(i) + '/' + str(configProxy.retry))
        except requests.exceptions.ConnectionError:
            i += 1
            print('[-]Download :  Connect retry ' + str(i) + '/' + str(configProxy.retry))
        except requests.exceptions.ProxyError:
            i += 1
            print('[-]Download :  Connect retry ' + str(i) + '/' + str(configProxy.retry))
        except requests.exceptions.ConnectTimeout:
            i += 1
            print('[-]Download :  Connect retry ' + str(i) + '/' + str(configProxy.retry))
        except IOError:
            raise ValueError(f"[-]Create Directory '{path}' failed!")
            return
    print('[-]Connect Failed! Please check your Proxy or Network!')
    raise ValueError('[-]Connect Failed! Please check your Proxy or Network!')
    return

def download_one_file(args):
    def _inner(url: str, save_path: Path):
        filebytes = get_html(url, return_type='content')
        if isinstance(filebytes, bytes) and len(filebytes):
            if len(filebytes) == save_path.open('wb').write(filebytes):
                return str(save_path)
    return _inner(*args)

'''用法示例: 2线程同时下载两个不同文件，并保存到不同路径，路径目录可未创建，但需要具备对目标目录和文件的写权限
parallel_download_files([
    ('https://site1/img/p1.jpg', 'C:/temp/img/p1.jpg'),
    ('https://site2/cover/n1.xml', 'C:/tmp/cover/n1.xml')
    ])
'''
# dn_list 可以是 tuple或者list: ((url1, save_fullpath1),(url2, save_fullpath2),)
# parallel: 并行下载的线程池线程数，为0则由函数自己决定
def parallel_download_files(dn_list, parallel: int = 0):
    mp_args = []
    for url, fullpath in dn_list:
        if url and isinstance(url, str) and url.startswith('http') and fullpath and isinstance(fullpath, (str, Path)) and len(str(fullpath)):
            fullpath = Path(fullpath)
            fullpath.parent.mkdir(parents=True, exist_ok=True)
            mp_args.append((url, fullpath))
    if not len(mp_args):
        return []
    if not isinstance(parallel, int) or parallel not in range(1,200):
        parallel = min(5, len(mp_args))
    with ThreadPoolExecutor(parallel) as pool:
        results = list(pool.map(download_one_file, mp_args))
    return results

def delete_all_elements_in_list(string,lists):
    new_lists = []
    for i in lists:
        if i != string:
            new_lists.append(i)
    return new_lists