# VERSION: 2.7
# AUTHORS: imDMG [imdmgg@gmail.com]

# Kinozal.tv search engine plugin for qBittorrent

import base64
import gzip
import json
import logging
import re
import sys
import time
from concurrent.futures.thread import ThreadPoolExecutor
from dataclasses import dataclass, field
from functools import partial
from html import unescape
from http.cookiejar import MozillaCookieJar
from pathlib import Path
from tempfile import NamedTemporaryFile
from typing import Union, Optional
from urllib.error import URLError, HTTPError
from urllib.parse import urlencode, unquote
from urllib.request import build_opener, HTTPCookieProcessor, ProxyHandler

try:
    from novaprinter import prettyPrinter
except ImportError:
    sys.path.insert(0, str(Path(__file__).parent.parent.absolute()))
    from novaprinter import prettyPrinter

# setup logging
logging.basicConfig(
    format="%(asctime)s %(name)-12s %(levelname)-8s %(message)s",
    datefmt="%m-%d %H:%M",
    level=logging.DEBUG
)

logger = logging.getLogger(__name__)

FILE = Path(__file__)
BASEDIR = FILE.parent.absolute()

FILENAME = FILE.name[:-3]
FILE_J, FILE_C = [BASEDIR / (FILENAME + fl) for fl in (".json", ".cookie")]

PAGES = 50

RE_TORRENTS = re.compile(
    r'nam"><a\s+?href="/(.+?)"\s+?class="r\d">(.+?)</a>.+?s\'>.+?s\'>(.+?)<.+?'
    r'sl_s\'>(\d+?)<.+?sl_p\'>(\d+?)<.+?s\'>(.+?)</td>', re.S
)
RE_RESULTS = re.compile(r"</span>Найдено\s+?(\d+?)\s+?раздач", re.S)
PATTERNS = ("%sbrowse.php?s=%s&c=%s", "%s&page=%s")

# base64 encoded image
ICON = ("AAABAAEAEBAAAAEAIABoBAAAFgAAACgAAAAQAAAAIAAAAAEAIAAAAAAAQAQAAAAAAAAAAA"
        "AAAAAAAAAAAACARztMgEc7/4BHO/+ARztMAAAAAIBHO0yhd2n/gEc7/6F3af+ARztMAAAA"
        "AIBHO0yARzv/gEc7/4BHO0wAAAAAgEc7/7iYiv/O4+r/pH5x/4FIPP+kfnH/zsrE/87j6v"
        "/OycL/pYB1/4BHO/+jfHD/ztbV/7+yrP+ARzv/AAAAAIBHO//O4+r/zu/9/87v/f/O7/3/"
        "zu/9/87v/f/O7/3/zu/9/87v/f/O7/3/zu/9/87v/f/O1dT/gEc7/wAAAACARztMpYB1/8"
        "7v/f8IC5X/CAuV/wgLlf8IC5X/zu/9/77h+v9vgcv/SFSy/wAAif97j87/oXdp/4BHO0wA"
        "AAAAAAAAAIBHO//O7/3/gabq/w4Tnv8OE57/gabq/87v/f96muj/DBCd/wAAif83SMf/zu"
        "/9/4BHO/8AAAAAAAAAAIBHO0ynhXv/zu/9/87v/f8OE57/CAuV/87v/f+63vn/Hyqx/wAA"
        "if9KXMX/zO38/87v/f+mhHn/gEc7TAAAAAChd2n/1eHk/87v/f/O7/3/DhOe/wgLlf9nhu"
        "T/MEPF/wAAif82ScT/utjy/87v/f/O7/3/zsrD/6F3af8AAAAAgEc7/9Pk6v/O7/3/zu/9"
        "/xQcqP8IC5X/FBqo/xUYlf9of9v/zu/9/87v/f/O7/3/zu/9/87d4f+ARzv/AAAAAIBHO/"
        "/Y19X/zu/9/87v/f8RGaT/CAuV/wAAif90h8v/zu/9/87v/f/O7/3/zu/9/87v/f/OycL/"
        "gEc7/wAAAAChd2n/up6S/87v/f/O7/3/ERmk/wgLlf9DXdj/CQ6Z/zdAqf/O7/3/zu/9/8"
        "7v/f/O7/3/upyQ/6F3af8AAAAAgEc7TIJLQP/P7/3/zu/9/xQcqP8IC5X/zu/9/46l2f8j"
        "NMD/gJXS/87v/f/O7/3/zu/9/45kXf+ARztMAAAAAAAAAACARzv/0e35/5Go2/8UHKj/CA"
        "uV/5Go2//O7/3/XHDY/w4Tn/8YHJf/QEms/9Dr9v+ARzv/AAAAAAAAAACARztMu6KY/9Hu"
        "+v8IC5X/CAuV/wgLlf8IC5X/zu/9/87v/f9OZtz/FB2q/y08wv/Q6/b/oXdp/4BHO0wAAA"
        "AAgEc7/9/s8P/R7fn/0e77/9Hu+//O7/3/zu/9/87v/f/O7/3/z+/9/9Dt+P/Q7Pf/3u3t"
        "/87n8P+ARzv/AAAAAIBHO//Sz8j/3+zw/7qhlf+IWE//o31w/9jZ2P/a7fH/2NfV/7ylm/"
        "+GVEr/qYyD/87o8f/R2dj/gEc7/wAAAACARztMgEc7/4BHO/+ARztMAAAAAIBHO0yARzv/"
        "gEc7/4BHO/+ARztMAAAAAIBHO0yARzv/gEc7/4BHO0wAAAAACCEAAAABAAAAAQAAAAEAAI"
        "ADAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAACAAwAAAAEAAAABAAAAAQAACCEAAA== ")


def rng(t: int) -> range:
    return range(1, -(-t // PAGES))


@dataclass
class Config:
    username: str = "USERNAME"
    password: str = "PASSWORD"
    torrent_date: bool = True
    magnet: bool = False
    proxy: bool = False
    # dynamic_proxy: bool = True
    proxies: dict = field(default_factory=lambda: {"http": "", "https": ""})
    ua: str = ("Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 "
               "Firefox/38.0 ")

    def __post_init__(self):
        try:
            if not self._validate_json(json.loads(FILE_J.read_text())):
                raise ValueError("Incorrect json scheme.")
        except Exception as e:
            logger.error(e)
            FILE_J.write_text(self.to_str())
            (BASEDIR / f"{FILENAME}.ico").write_bytes(base64.b64decode(ICON))

    def to_str(self) -> str:
        return json.dumps(self.to_dict(), indent=4, sort_keys=False)

    def to_dict(self) -> dict:
        return {self._to_camel(k): v for k, v in self.__dict__.items()}

    def _validate_json(self, obj: dict) -> bool:
        is_valid = True
        for k, v in self.__dict__.items():
            _val = obj.get(self._to_camel(k))
            if type(_val) is not type(v):
                is_valid = False
                continue
            setattr(self, k, _val)
        return is_valid

    @staticmethod
    def _to_camel(s: str) -> str:
        return "".join(x.title() if i else x
                       for i, x in enumerate(s.split("_")))


config = Config()


class Kinozal:
    name = "Kinozal"
    url = "http://kinozal.tv/"
    url_dl = url.replace("//", "//dl.")
    url_login = url + "takelogin.php"
    supported_categories = {"all": "0",
                            "movies": "1002",
                            "tv": "1001",
                            "music": "1004",
                            "games": "23",
                            "anime": "20",
                            "software": "32"}

    # error message
    error: Optional[str] = None
    # cookies
    mcj = MozillaCookieJar()
    # establish connection
    session = build_opener(HTTPCookieProcessor(mcj))

    def __init__(self):
        # add proxy handler if needed
        if config.proxy:
            if any(config.proxies.values()):
                self.session.add_handler(ProxyHandler(config.proxies))
                logger.debug("Proxy is set!")
            else:
                self.error = "Proxy enabled, but not set!"

        # change user-agent
        self.session.addheaders = [("User-Agent", config.ua)]

        # load local cookies
        try:
            self.mcj.load(FILE_C, ignore_discard=True)
            if "uid" in [cookie.name for cookie in self.mcj]:
                # if cookie.expires < int(time.time())
                logger.info("Local cookies is loaded")
            else:
                logger.info("Local cookies expired or bad")
                logger.debug(f"That we have: {[cookie for cookie in self.mcj]}")
                self.mcj.clear()
                self.login()
        except FileNotFoundError:
            self.login()

    def search(self, what: str, cat: str = "all") -> None:
        if self.error:
            self.pretty_error(what)
            return None
        query = PATTERNS[0] % (self.url, what.replace(" ", "+"),
                               self.supported_categories[cat])

        # make first request (maybe it enough)
        t0, total = time.time(), self.searching(query, True)
        if self.error:
            self.pretty_error(what)
            return None
        # do async requests
        if total > PAGES:
            qrs = [PATTERNS[1] % (query, x) for x in rng(total)]
            with ThreadPoolExecutor(len(qrs)) as executor:
                executor.map(self.searching, qrs, timeout=30)

        logger.debug(f"--- {time.time() - t0} seconds ---")
        logger.info(f"Found torrents: {total}")

    def download_torrent(self, url: str) -> None:
        # choose download method
        if config.magnet:
            url = "%sget_srv_details.php?action=2&id=%s" % (self.url,
                                                            url.split("=")[1])

        response = self._request(url)
        if self.error:
            self.pretty_error(url)
            return None

        if config.magnet:
            if response.startswith(b"\x1f\x8b\x08"):
                response = gzip.decompress(response)
            path = "magnet:?xt=urn:btih:" + response.decode()[18:58]
        else:
            # Create a torrent file
            with NamedTemporaryFile(suffix=".torrent", delete=False) as fd:
                fd.write(response)
                path = fd.name

        # return magnet link / file path
        logger.debug(path + " " + url)
        print(path + " " + url)

    def login(self) -> None:
        if self.error:
            return None

        form_data = {"username": config.username, "password": config.password}
        logger.debug(f"Login. Data before: {form_data}")
        # encoding to cp1251 then do default decode whole string
        data_encoded = urlencode(form_data, encoding="cp1251").encode()
        logger.debug(f"Login. Data after: {data_encoded}")

        self._request(self.url_login, data_encoded)
        if self.error:
            return None
        logger.debug(f"That we have: {[cookie for cookie in self.mcj]}")
        if "uid" in [cookie.name for cookie in self.mcj]:
            self.mcj.save(FILE_C, ignore_discard=True, ignore_expires=True)
            logger.info("We successfully authorized")
        else:
            self.error = "We not authorized, please check your credentials!"
            logger.warning(self.error)

    def searching(self, query: str, first: bool = False) -> Union[None, int]:
        response = self._request(query)
        if self.error:
            return None
        if response.startswith(b"\x1f\x8b\x08"):
            response = gzip.decompress(response)
        page, torrents_found = response.decode("cp1251"), -1
        if first:
            # check login status
            if "Гость! ( Зарегистрируйтесь )" in page:
                logger.debug("Looks like we lost session id, lets login")
                self.mcj.clear()
                self.login()
                if self.error:
                    return None
            # firstly we check if there is a result
            result = RE_RESULTS.search(page)
            if not result:
                self.error = "Unexpected page content"
                return None
            torrents_found = int(result[1])
            if not torrents_found:
                return 0
        self.draw(page)

        return torrents_found

    def draw(self, html: str) -> None:
        torrents = RE_TORRENTS.findall(html)
        _part = partial(time.strftime, "%y.%m.%d")
        # yeah this is yesterday
        yesterday = _part(time.localtime(time.time() - 86400))
        for tor in torrents:
            torrent_date = ""
            if config.torrent_date:
                ct = tor[5].split()[0]
                if "сегодня" in ct:
                    torrent_date = _part()
                elif "вчера" in ct:
                    torrent_date = yesterday
                else:
                    torrent_date = _part(time.strptime(ct, "%d.%m.%Y"))
                torrent_date = f"[{torrent_date}] "

            # replace size units
            table = {"Т": "T", "Г": "G", "М": "M", "К": "K", "Б": "B"}

            prettyPrinter({
                "engine_url": self.url,
                "desc_link": self.url + tor[0],
                "name": torrent_date + unescape(tor[1]),
                "link": f"{self.url_dl}download.php?id={tor[0].split('=')[-1]}",
                "size": tor[2].translate(tor[2].maketrans(table)),
                "seeds": tor[3],
                "leech": tor[4]
            })
        del torrents

    def _request(
        self, url: str, data: Optional[bytes] = None, repeated: bool = False
    ) -> Union[bytes, None]:
        try:
            with self.session.open(url, data, 5) as r:
                # checking that tracker isn't blocked
                if r.geturl().startswith((self.url, self.url_dl)):
                    return r.read()
                self.error = f"{url} is blocked. Try another proxy."
        except (URLError, HTTPError) as err:
            logger.error(err.reason)
            error = str(err.reason)
            if "timed out" in error and not repeated:
                logger.debug("Repeating request...")
                return self._request(url, data, True)
            if "no host given" in error:
                self.error = "Proxy is bad, try another!"
            elif hasattr(err, "code"):
                self.error = f"Request to {url} failed with status: {err.code}"
            else:
                self.error = f"{url} is not response! Maybe it is blocked."

        return None

    def pretty_error(self, what: str) -> None:
        prettyPrinter({"engine_url": self.url,
                       "desc_link": "https://github.com/imDMG/qBt_SE",
                       "name": f"[{unquote(what)}][Error]: {self.error}",
                       "link": self.url + "error",
                       "size": "1 TB",  # lol
                       "seeds": 100,
                       "leech": 100})

        self.error = None


# pep8
kinozal = Kinozal

if __name__ == "__main__":
    if BASEDIR.parent.joinpath("settings_gui.py").exists():
        from settings_gui import EngineSettingsGUI

        EngineSettingsGUI(FILENAME)
    engine = kinozal()
    engine.search("doctor")