from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..compat import compat_urlparse
from ..utils import (
    ExtractorError,
    NO_DEFAULT,
    sanitized_Request,
    urlencode_postdata,
)


class NovaMovIE(InfoExtractor):
    IE_NAME = 'novamov'
    IE_DESC = 'NovaMov'

    _VALID_URL_TEMPLATE = r'''(?x)
                            http://
                                (?:
                                    (?:www\.)?%(host)s/(?:file|video|mobile/\#/videos)/|
                                    (?:(?:embed|www)\.)%(host)s/embed(?:\.php|/)?\?(?:.*?&)?\bv=
                                )
                                (?P<id>[a-z\d]{13})
                            '''
    _VALID_URL = _VALID_URL_TEMPLATE % {'host': 'novamov\.com'}

    _HOST = 'www.novamov.com'

    _FILE_DELETED_REGEX = r'This file no longer exists on our servers!</h2>'
    _FILEKEY_REGEX = r'flashvars\.filekey=(?P<filekey>"?[^"]+"?);'
    _TITLE_REGEX = r'(?s)<div class="v_tab blockborder rounded5" id="v_tab1">\s*<h3>([^<]+)</h3>'
    _DESCRIPTION_REGEX = r'(?s)<div class="v_tab blockborder rounded5" id="v_tab1">\s*<h3>[^<]+</h3><p>([^<]+)</p>'
    _URL_TEMPLATE = 'http://%s/video/%s'

    _TEST = None

    def _check_existence(self, webpage, video_id):
        if re.search(self._FILE_DELETED_REGEX, webpage) is not None:
            raise ExtractorError('Video %s does not exist' % video_id, expected=True)

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

        url = self._URL_TEMPLATE % (self._HOST, video_id)

        webpage = self._download_webpage(
            url, video_id, 'Downloading video page')

        self._check_existence(webpage, video_id)

        def extract_filekey(default=NO_DEFAULT):
            filekey = self._search_regex(
                self._FILEKEY_REGEX, webpage, 'filekey', default=default)
            if filekey is not default and (filekey[0] != '"' or filekey[-1] != '"'):
                return self._search_regex(
                    r'var\s+%s\s*=\s*"([^"]+)"' % re.escape(filekey), webpage, 'filekey', default=default)
            else:
                return filekey

        filekey = extract_filekey(default=None)

        if not filekey:
            fields = self._hidden_inputs(webpage)
            post_url = self._search_regex(
                r'<form[^>]+action=(["\'])(?P<url>.+?)\1', webpage,
                'post url', default=url, group='url')
            if not post_url.startswith('http'):
                post_url = compat_urlparse.urljoin(url, post_url)
            request = sanitized_Request(
                post_url, urlencode_postdata(fields))
            request.add_header('Content-Type', 'application/x-www-form-urlencoded')
            request.add_header('Referer', post_url)
            webpage = self._download_webpage(
                request, video_id, 'Downloading continue to the video page')
            self._check_existence(webpage, video_id)

        filekey = extract_filekey()

        title = self._html_search_regex(self._TITLE_REGEX, webpage, 'title')
        description = self._html_search_regex(self._DESCRIPTION_REGEX, webpage, 'description', default='', fatal=False)

        api_response = self._download_webpage(
            'http://%s/api/player.api.php?key=%s&file=%s' % (self._HOST, filekey, video_id), video_id,
            'Downloading video api response')

        response = compat_urlparse.parse_qs(api_response)

        if 'error_msg' in response:
            raise ExtractorError('%s returned error: %s' % (self.IE_NAME, response['error_msg'][0]), expected=True)

        video_url = response['url'][0]

        return {
            'id': video_id,
            'url': video_url,
            'title': title,
            'description': description
        }


class WholeCloudIE(NovaMovIE):
    IE_NAME = 'wholecloud'