# -*- coding: utf-8 -*-

import re
import time

from base64 import b64encode
from random import random, randint
from urlparse import urljoin, urlparse

from module.common.json_layer import json_loads
from module.plugins.Plugin import Base


#@TODO: Extend (new) Plugin class; remove all `html` args
class CaptchaService(Base):
    __name__    = "CaptchaService"
    __type__    = "captcha"
    __version__ = "0.25"

    __description__ = """Base captcha service plugin"""
    __license__     = "GPLv3"
    __authors__     = [("pyLoad Team", "admin@pyload.org")]


    key = None  #: last key detected


    def __init__(self, plugin):
        self.plugin = plugin
        super(CaptchaService, self).__init__(plugin.core)


    def detect_key(self, html=None):
        raise NotImplementedError


    def challenge(self, key=None, html=None):
        raise NotImplementedError


    def result(self, server, challenge):
        raise NotImplementedError


class ReCaptcha(CaptchaService):
    __name__    = "ReCaptcha"
    __type__    = "captcha"
    __version__ = "0.14"

    __description__ = """ReCaptcha captcha service plugin"""
    __license__     = "GPLv3"
    __authors__     = [("pyLoad Team", "admin@pyload.org"),
                       ("Walter Purcaro", "vuolter@gmail.com"),
                       ("zapp-brannigan", "fuerst.reinje@web.de")]


    KEY_V2_PATTERN = r'(?:data-sitekey=["\']|["\']sitekey["\']:\s*["\'])([\w-]+)'
    KEY_V1_PATTERN = r'(?:recaptcha(?:/api|\.net)/(?:challenge|noscript)\?k=|Recaptcha\.create\s*\(\s*["\'])([\w-]+)'


    def detect_key(self, html=None):
        if not html:
            if hasattr(self.plugin, "html") and self.plugin.html:
                html = self.plugin.html
            else:
                errmsg = _("ReCaptcha html not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        m = re.search(self.KEY_V2_PATTERN, html) or re.search(self.KEY_V1_PATTERN, html)
        if m:
            self.key = m.group(1).strip()
            self.logDebug("Key: %s" % self.key)
            return self.key
        else:
            self.logDebug("Key not found")
            return None


    def challenge(self, key=None, html=None, version=None):
        if not key:
            if self.detect_key(html):
                key = self.key
            else:
                errmsg = _("ReCaptcha key not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        if version in (1, 2):
            return getattr(self, "_challenge_v%s" % version)(key)

        elif not html and hasattr(self.plugin, "html") and self.plugin.html:
            version = 2 if re.search(self.KEY_V2_PATTERN, self.plugin.html) else 1
            return self.challenge(key, self.plugin.html, version)

        else:
            errmsg = _("ReCaptcha html not found")
            self.plugin.fail(errmsg)
            raise TypeError(errmsg)


    def _challenge_v1(self, key):
        html = self.plugin.req.load("http://www.google.com/recaptcha/api/challenge",
                                    get={'k': key})
        try:
            challenge = re.search("challenge : '(.+?)',", html).group(1)
            server    = re.search("server : '(.+?)',", html).group(1)

        except AttributeError:
            errmsg = _("ReCaptcha challenge pattern not found")
            self.plugin.fail(errmsg)
            raise AttributeError(errmsg)

        self.logDebug("Challenge: %s" % challenge)

        return self.result(server, challenge), challenge


    def result(self, server, challenge):
        result = self.plugin.decryptCaptcha("%simage" % server,
                                            get={'c': challenge},
                                            cookies=True,
                                            forceUser=True,
                                            imgtype="jpg")

        self.logDebug("Result: %s" % result)

        return result


    def _collectApiInfo(self):
        html = self.plugin.req.load("http://www.google.com/recaptcha/api.js")
        a    = re.search(r'po.src = \'(.*?)\';', html).group(1)
        vers = a.split("/")[5]

        self.logDebug("API version: %s" %vers)

        language = a.split("__")[1].split(".")[0]

        self.logDebug("API language: %s" % language)

        html = self.plugin.req.load("https://apis.google.com/js/api.js")
        b    = re.search(r'"h":"(.*?)","', html).group(1)
        jsh  = b.decode('unicode-escape')

        self.logDebug("API jsh-string: %s" % jsh)

        return vers, language, jsh


    def _prepareTimeAndRpc(self):
        self.plugin.req.load("http://www.google.com/recaptcha/api2/demo")

        millis = int(round(time.time() * 1000))

        self.logDebug("Time: %s" % millis)

        rand = randint(1, 99999999)
        a    = "0.%s" % str(rand * 2147483647)
        rpc  = int(100000000 * float(a))

        self.logDebug("Rpc-token: %s" % rpc)

        return millis, rpc


    def _challenge_v2(self, key, parent=None):
        if parent is None:
            try:
                parent = urljoin("http://", urlparse(self.plugin.pyfile.url).netloc)

            except Exception:
                parent = ""

        botguardstring      = "!A"
        vers, language, jsh = self._collectApiInfo()
        millis, rpc         = self._prepareTimeAndRpc()

        html = self.plugin.req.load("https://www.google.com/recaptcha/api2/anchor",
                                    get={'k'       : key,
                                         'hl'      : language,
                                         'v'       : vers,
                                         'usegapi' : "1",
                                         'jsh'     : "%s#id=IO_%s" % (jsh, millis),
                                         'parent'  : parent,
                                         'pfname'  : "",
                                         'rpctoken': rpc})

        token1 = re.search(r'id="recaptcha-token" value="(.*?)">', html)
        self.logDebug("Token #1: %s" % token1.group(1))

        html = self.plugin.req.load("https://www.google.com/recaptcha/api2/frame",
                                    get={'c'      : token1.group(1),
                                         'hl'     : language,
                                         'v'      : vers,
                                         'bg'     : botguardstring,
                                         'k'      : key,
                                         'usegapi': "1",
                                         'jsh'    : jsh}).decode('unicode-escape')

        token2 = re.search(r'"finput","(.*?)",', html)
        self.logDebug("Token #2: %s" % token2.group(1))

        token3 = re.search(r'."asconf".\s,".*?".\s,"(.*?)".', html)
        self.logDebug("Token #3: %s" % token3.group(1))

        html = self.plugin.req.load("https://www.google.com/recaptcha/api2/reload",
                                    post={'k'     : key,
                                          'c'     : token2.group(1),
                                          'reason': "fi",
                                          'fbg'   : token3.group(1)})

        token4 = re.search(r'"rresp","(.*?)",', html)
        self.logDebug("Token #4: %s" % token4.group(1))

        millis_captcha_loading = int(round(time.time() * 1000))
        captcha_response       = self.plugin.decryptCaptcha("https://www.google.com/recaptcha/api2/payload",
                                                            get={'c':token4.group(1), 'k':key},
                                                            cookies=True,
                                                            forceUser=True)
        response               = b64encode('{"response":"%s"}' % captcha_response)

        self.logDebug("Result: %s" % response)

        timeToSolve     = int(round(time.time() * 1000)) - millis_captcha_loading
        timeToSolveMore = timeToSolve + int(float("0." + str(randint(1, 99999999))) * 500)

        html = self.plugin.req.load("https://www.google.com/recaptcha/api2/userverify",
                                    post={'k'       : key,
                                          'c'       : token4.group(1),
                                          'response': response,
                                          't'       : timeToSolve,
                                          'ct'      : timeToSolveMore,
                                          'bg'      : botguardstring})

        token5 = re.search(r'"uvresp","(.*?)",', html)
        self.logDebug("Token #5: %s" % token5.group(1))

        result = token5.group(1)

        return result, None


class AdsCaptcha(CaptchaService):
    __name__    = "AdsCaptcha"
    __type__    = "captcha"
    __version__ = "0.08"

    __description__ = """AdsCaptcha captcha service plugin"""
    __license__     = "GPLv3"
    __authors__     = [("pyLoad Team", "admin@pyload.org")]


    CAPTCHAID_PATTERN  = r'api\.adscaptcha\.com/Get\.aspx\?[^"\']*CaptchaId=(\d+)'
    PUBLICKEY_PATTERN = r'api\.adscaptcha\.com/Get\.aspx\?[^"\']*PublicKey=([\w-]+)'


    def detect_key(self, html=None):
        if not html:
            if hasattr(self.plugin, "html") and self.plugin.html:
                html = self.plugin.html
            else:
                errmsg = _("AdsCaptcha html not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        m = re.search(self.PUBLICKEY_PATTERN, html)
        n = re.search(self.CAPTCHAID_PATTERN, html)
        if m and n:
            self.key = (m.group(1).strip(), n.group(1).strip())  #: key is the tuple(PublicKey, CaptchaId)
            self.logDebug("Key|id: %s | %s" % self.key)
            return self.key
        else:
            self.logDebug("Key or id not found")
            return None


    def challenge(self, key=None, html=None):
        if not key:
            if self.detect_key(html):
                key = self.key
            else:
                errmsg = _("AdsCaptcha key not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        PublicKey, CaptchaId = key

        html = self.plugin.req.load("http://api.adscaptcha.com/Get.aspx",
                                    get={'CaptchaId': CaptchaId,
                                         'PublicKey': PublicKey})
        try:
            challenge = re.search("challenge: '(.+?)',", html).group(1)
            server    = re.search("server: '(.+?)',", html).group(1)

        except AttributeError:
            errmsg = _("AdsCaptcha challenge pattern not found")
            self.plugin.fail(errmsg)
            raise AttributeError(errmsg)

        self.logDebug("Challenge: %s" % challenge)

        return self.result(server, challenge), challenge


    def result(self, server, challenge):
        result = self.plugin.decryptCaptcha("%sChallenge.aspx" % server,
                                            get={'cid': challenge, 'dummy': random()},
                                            cookies=True,
                                            imgtype="jpg")

        self.logDebug("Result: %s" % result)

        return result


class SolveMedia(CaptchaService):
    __name__    = "SolveMedia"
    __type__    = "captcha"
    __version__ = "0.12"

    __description__ = """SolveMedia captcha service plugin"""
    __license__     = "GPLv3"
    __authors__     = [("pyLoad Team", "admin@pyload.org")]


    KEY_PATTERN = r'api\.solvemedia\.com/papi/challenge\.(?:no)?script\?k=(.+?)["\']'


    def detect_key(self, html=None):
        if not html:
            if hasattr(self.plugin, "html") and self.plugin.html:
                html = self.plugin.html
            else:
                errmsg = _("SolveMedia html not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        m = re.search(self.KEY_PATTERN, html)
        if m:
            self.key = m.group(1).strip()
            self.logDebug("Key: %s" % self.key)
            return self.key
        else:
            self.logDebug("Key not found")
            return None


    def challenge(self, key=None, html=None):
        if not key:
            if self.detect_key(html):
                key = self.key
            else:
                errmsg = _("SolveMedia key not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        html = self.plugin.req.load("http://api.solvemedia.com/papi/challenge.noscript",
                                    get={'k': key})
        try:
            challenge = re.search(r'<input type=hidden name="adcopy_challenge" id="adcopy_challenge" value="([^"]+)">',
                                  html).group(1)
            server    = "http://api.solvemedia.com/papi/media"

        except AttributeError:
            errmsg = _("SolveMedia challenge pattern not found")
            self.plugin.fail(errmsg)
            raise AttributeError(errmsg)

        self.logDebug("Challenge: %s" % challenge)

        result = self.result(server, challenge)

        try:
            magic = re.search(r'name="magic" value="(.+?)"', html).group(1)

        except AttributeError:
            self.logDebug("Magic code not found")

        else:
            if not self._verify(key, magic, result, challenge):
                self.logDebug("Captcha code was invalid")

        return result, challenge


    def _verify(self, key, magic, result, challenge, ref=None):  #@TODO: Clean up
        if ref is None:
            try:
                ref = self.plugin.pyfile.url

            except Exception:
                ref = ""

        html = self.plugin.req.load("http://api.solvemedia.com/papi/verify.noscript",
                                    post={'adcopy_response'  : result,
                                          'k'                : key,
                                          'l'                : "en",
                                          't'                : "img",
                                          's'                : "standard",
                                          'magic'            : magic,
                                          'adcopy_challenge' : challenge,
                                          'ref'              : ref})
        try:
            html      = self.plugin.req.load(re.search(r'URL=(.+?)">', html).group(1))
            gibberish = re.search(r'id=gibberish>(.+?)</textarea>', html).group(1)

        except Exception:
            return False

        else:
            return True


    def result(self, server, challenge):
        result = self.plugin.decryptCaptcha(server,
                                            get={'c': challenge},
                                            cookies=True,
                                            imgtype="gif")

        self.logDebug("Result: %s" % result)

        return result


class AdYouLike(CaptchaService):
    __name__    = "AdYouLike"
    __type__    = "captcha"
    __version__ = "0.05"

    __description__ = """AdYouLike captcha service plugin"""
    __license__     = "GPLv3"
    __authors__     = [("Walter Purcaro", "vuolter@gmail.com")]


    AYL_PATTERN      = r'Adyoulike\.create\s*\((.+?)\)'
    CALLBACK_PATTERN = r'(Adyoulike\.g\._jsonp_\d+)'


    def detect_key(self, html=None):
        if not html:
            if hasattr(self.plugin, "html") and self.plugin.html:
                html = self.plugin.html
            else:
                errmsg = _("AdYouLike html not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        m = re.search(self.AYL_PATTERN, html)
        n = re.search(self.CALLBACK_PATTERN, html)
        if m and n:
            self.key = (m.group(1).strip(), n.group(1).strip())
            self.logDebug("Ayl|callback: %s | %s" % self.key)
            return self.key   #: key is the tuple(ayl, callback)
        else:
            self.logDebug("Ayl or callback not found")
            return None


    def challenge(self, key=None, html=None):
        if not key:
            if self.detect_key(html):
                key = self.key
            else:
                errmsg = _("AdYouLike key not found")
                self.plugin.fail(errmsg)
                raise TypeError(errmsg)

        ayl, callback = key

        # {"adyoulike":{"key":"P~zQ~O0zV0WTiAzC-iw0navWQpCLoYEP"},
        # "all":{"element_id":"ayl_private_cap_92300","lang":"fr","env":"prod"}}
        ayl = json_loads(ayl)

        html = self.plugin.req.load("http://api-ayl.appspot.com/challenge",
                                    get={'key'     : ayl['adyoulike']['key'],
                                         'env'     : ayl['all']['env'],
                                         'callback': callback})
        try:
            challenge = json_loads(re.search(callback + r'\s*\((.+?)\)', html).group(1))

        except AttributeError:
            errmsg = _("AdYouLike challenge pattern not found")
            self.plugin.fail(errmsg)
            raise AttributeError(errmsg)

        self.logDebug("Challenge: %s" % challenge)

        return self.result(ayl, challenge), challenge


    def result(self, server, challenge):
        # Adyoulike.g._jsonp_5579316662423138
        # ({"translations":{"fr":{"instructions_visual":"Recopiez « Soonnight » ci-dessous :"}},
        # "site_under":true,"clickable":true,"pixels":{"VIDEO_050":[],"DISPLAY":[],"VIDEO_000":[],"VIDEO_100":[],
        # "VIDEO_025":[],"VIDEO_075":[]},"medium_type":"image/adyoulike",
        # "iframes":{"big":"<iframe src=\"http://www.soonnight.com/campagn.html\" scrolling=\"no\"
        # height=\"250\" width=\"300\" frameborder=\"0\"></iframe>"},"shares":{},"id":256,
        # "token":"e6QuI4aRSnbIZJg02IsV6cp4JQ9~MjA1","formats":{"small":{"y":300,"x":0,"w":300,"h":60},
        # "big":{"y":0,"x":0,"w":300,"h":250},"hover":{"y":440,"x":0,"w":300,"h":60}},
        # "tid":"SqwuAdxT1EZoi4B5q0T63LN2AkiCJBg5"})

        if isinstance(server, basestring):
            server = json_loads(server)

        if isinstance(challenge, basestring):
            challenge = json_loads(challenge)

        try:
            instructions_visual = challenge['translations'][server['all']['lang']]['instructions_visual']
            result = re.search(u'«(.+?)»', instructions_visual).group(1).strip()

        except AttributeError:
            errmsg = _("AdYouLike result not found")
            self.plugin.fail(errmsg)
            raise AttributeError(errmsg)

        result = {'_ayl_captcha_engine' : "adyoulike",
                  '_ayl_env'            : server['all']['env'],
                  '_ayl_tid'            : challenge['tid'],
                  '_ayl_token_challenge': challenge['token'],
                  '_ayl_response'       : response}

        self.logDebug("Result: %s" % result)

        return result