from __future__ import unicode_literals

import os
import re

from .common import InfoExtractor
from ..compat import (
    compat_urllib_parse,
    compat_urllib_parse_urlparse,
    compat_urllib_request,
)
from ..utils import (
    ExtractorError,
    str_to_int,
)
from ..aes import (
    aes_decrypt_text
)


class PornHubIE(InfoExtractor):
    _VALID_URL = r'https?://(?:www\.)?pornhub\.com/view_video\.php\?viewkey=(?P<id>[0-9a-f]+)'
    _TEST = {
        'url': 'http://www.pornhub.com/view_video.php?viewkey=648719015',
        'md5': '882f488fa1f0026f023f33576004a2ed',
        'info_dict': {
            'id': '648719015',
            'ext': 'mp4',
            "uploader": "Babes",
            "title": "Seductive Indian beauty strips down and fingers her pink pussy",
            "age_limit": 18
        }
    }

    def _extract_count(self, pattern, webpage, name):
        count = self._html_search_regex(pattern, webpage, '%s count' % name, fatal=False)
        if count:
            count = str_to_int(count)
        return count

    def _real_extract(self, url):
        video_id = self._match_id(url)

        req = compat_urllib_request.Request(url)
        req.add_header('Cookie', 'age_verified=1')
        webpage = self._download_webpage(req, video_id)

        error_msg = self._html_search_regex(
            r'(?s)<div class="userMessageSection[^"]*".*?>(.*?)</div>',
            webpage, 'error message', default=None)
        if error_msg:
            error_msg = re.sub(r'\s+', ' ', error_msg)
            raise ExtractorError(
                'PornHub said: %s' % error_msg,
                expected=True, video_id=video_id)

        video_title = self._html_search_regex(r'<h1 [^>]+>([^<]+)', webpage, 'title')
        video_uploader = self._html_search_regex(
            r'(?s)From:&nbsp;.+?<(?:a href="/users/|a href="/channels/|<span class="username)[^>]+>(.+?)<',
            webpage, 'uploader', fatal=False)
        thumbnail = self._html_search_regex(r'"image_url":"([^"]+)', webpage, 'thumbnail', fatal=False)
        if thumbnail:
            thumbnail = compat_urllib_parse.unquote(thumbnail)

        view_count = self._extract_count(r'<span class="count">([\d,\.]+)</span> views', webpage, 'view')
        like_count = self._extract_count(r'<span class="votesUp">([\d,\.]+)</span>', webpage, 'like')
        dislike_count = self._extract_count(r'<span class="votesDown">([\d,\.]+)</span>', webpage, 'dislike')
        comment_count = self._extract_count(
            r'All comments \(<var class="videoCommentCount">([\d,\.]+)</var>', webpage, 'comment')

        video_urls = list(map(compat_urllib_parse.unquote, re.findall(r'"quality_[0-9]{3}p":"([^"]+)', webpage)))
        if webpage.find('"encrypted":true') != -1:
            password = compat_urllib_parse.unquote_plus(self._html_search_regex(r'"video_title":"([^"]+)', webpage, 'password'))
            video_urls = list(map(lambda s: aes_decrypt_text(s, password, 32).decode('utf-8'), video_urls))

        formats = []
        for video_url in video_urls:
            path = compat_urllib_parse_urlparse(video_url).path
            extension = os.path.splitext(path)[1][1:]
            format = path.split('/')[5].split('_')[:2]
            format = "-".join(format)

            m = re.match(r'^(?P<height>[0-9]+)P-(?P<tbr>[0-9]+)K$', format)
            if m is None:
                height = None
                tbr = None
            else:
                height = int(m.group('height'))
                tbr = int(m.group('tbr'))

            formats.append({
                'url': video_url,
                'ext': extension,
                'format': format,
                'format_id': format,
                'tbr': tbr,
                'height': height,
            })
        self._sort_formats(formats)

        return {
            'id': video_id,
            'uploader': video_uploader,
            'title': video_title,
            'thumbnail': thumbnail,
            'view_count': view_count,
            'like_count': like_count,
            'dislike_count': dislike_count,
            'comment_count': comment_count,
            'formats': formats,
            'age_limit': 18,
        }