from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..compat import (
    compat_urllib_parse_unquote,
    compat_urllib_request
)
from ..utils import (
    ExtractorError,
    HEADRequest,
    NO_DEFAULT,
    parse_count,
    str_to_int,
    clean_html
)


class MixcloudIE(InfoExtractor):
    _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/([^/]+)/(?!stream|uploads|favorites|listens|playlists)([^/]+)'
    IE_NAME = 'mixcloud'

    _TESTS = [{
        'url': 'http://www.mixcloud.com/dholbach/cryptkeeper/',
        'info_dict': {
            'id': 'dholbach-cryptkeeper',
            'ext': 'mp3',
            'title': 'Cryptkeeper',
            'description': 'After quite a long silence from myself, finally another Drum\'n\'Bass mix with my favourite current dance floor bangers.',
            'uploader': 'Daniel Holbach',
            'uploader_id': 'dholbach',
            'thumbnail': 're:https?://.*\.jpg',
            'view_count': int,
            'like_count': int,
        },
    }, {
        'url': 'http://www.mixcloud.com/gillespeterson/caribou-7-inch-vinyl-mix-chat/',
        'info_dict': {
            'id': 'gillespeterson-caribou-7-inch-vinyl-mix-chat',
            'ext': 'mp3',
            'title': 'Caribou 7 inch Vinyl Mix & Chat',
            'description': 'md5:2b8aec6adce69f9d41724647c65875e8',
            'uploader': 'Gilles Peterson Worldwide',
            'uploader_id': 'gillespeterson',
            'thumbnail': 're:https?://.*/images/',
            'view_count': int,
            'like_count': int,
        },
    }]

    def _check_url(self, url, track_id, ext):
        try:
            # We only want to know if the request succeed
            # don't download the whole file
            self._request_webpage(
                HEADRequest(url), track_id,
                'Trying %s URL' % ext)
            return True
        except ExtractorError:
            return False

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        uploader = mobj.group(1)
        cloudcast_name = mobj.group(2)
        track_id = compat_urllib_parse_unquote('-'.join((uploader, cloudcast_name)))

        webpage = self._download_webpage(url, track_id)

        message = self._html_search_regex(
            r'(?s)<div[^>]+class="global-message cloudcast-disabled-notice-light"[^>]*>(.+?)<(?:a|/div)',
            webpage, 'error message', default=None)

        preview_url = self._search_regex(
            r'\s(?:data-preview-url|m-preview)="([^"]+)"',
            webpage, 'preview url', default=None if message else NO_DEFAULT)

        if message:
            raise ExtractorError('%s said: %s' % (self.IE_NAME, message), expected=True)

        song_url = re.sub(r'audiocdn(\d+)', r'stream\1', preview_url)
        song_url = song_url.replace('/previews/', '/c/originals/')
        if not self._check_url(song_url, track_id, 'mp3'):
            song_url = song_url.replace('.mp3', '.m4a').replace('originals/', 'm4a/64/')
            if not self._check_url(song_url, track_id, 'm4a'):
                raise ExtractorError('Unable to extract track url')

        PREFIX = (
            r'm-play-on-spacebar[^>]+'
            r'(?:\s+[a-zA-Z0-9-]+(?:="[^"]+")?)*?\s+')
        title = self._html_search_regex(
            PREFIX + r'm-title="([^"]+)"', webpage, 'title')
        thumbnail = self._proto_relative_url(self._html_search_regex(
            PREFIX + r'm-thumbnail-url="([^"]+)"', webpage, 'thumbnail',
            fatal=False))
        uploader = self._html_search_regex(
            PREFIX + r'm-owner-name="([^"]+)"',
            webpage, 'uploader', fatal=False)
        uploader_id = self._search_regex(
            r'\s+"profile": "([^"]+)",', webpage, 'uploader id', fatal=False)
        description = self._og_search_description(webpage)
        like_count = parse_count(self._search_regex(
            r'\bbutton-favorite[^>]+>.*?<span[^>]+class=["\']toggle-number[^>]+>\s*([^<]+)',
            webpage, 'like count', fatal=False))
        view_count = str_to_int(self._search_regex(
            [r'<meta itemprop="interactionCount" content="UserPlays:([0-9]+)"',
             r'/listeners/?">([0-9,.]+)</a>'],
            webpage, 'play count', fatal=False))

        return {
            'id': track_id,
            'title': title,
            'url': song_url,
            'description': description,
            'thumbnail': thumbnail,
            'uploader': uploader,
            'uploader_id': uploader_id,
            'view_count': view_count,
            'like_count': like_count,
        }


class MixcloudUserIE(InfoExtractor):
    """
    Information extractor for Mixcloud users.
    It can retrieve a list of a user's uploads, favorites or listens.
    """

    _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/(?P<user>[^/]+)/(?P<type>uploads|favorites|listens)?/?$'
    IE_NAME = 'mixcloud:user'

    _TESTS = [{
        'url': 'http://www.mixcloud.com/dholbach/',
        'info_dict': {
            'id': 'dholbach/uploads',
            'title': 'Daniel Holbach (uploads)',
            'description': 'md5:327af72d1efeb404a8216c27240d1370',
        },
        'playlist_mincount': 11
    }, {
        'url': 'http://www.mixcloud.com/dholbach/uploads/',
        'info_dict': {
            'id': 'dholbach/uploads',
            'title': 'Daniel Holbach (uploads)',
            'description': 'md5:327af72d1efeb404a8216c27240d1370',
        },
        'playlist_mincount': 11
    }, {
        'url': 'http://www.mixcloud.com/dholbach/favorites/',
        'info_dict': {
            'id': 'dholbach/favorites',
            'title': 'Daniel Holbach (favorites)',
            'description': 'md5:327af72d1efeb404a8216c27240d1370',
        },
        'playlist_mincount': 244
    }, {
        'url': 'http://www.mixcloud.com/dholbach/listens/',
        'info_dict': {
            'id': 'dholbach/listens',
            'title': 'Daniel Holbach (listens)',
            'description': 'md5:327af72d1efeb404a8216c27240d1370',
        },
        'playlist_mincount': 846
    }]

    def _fetch_tracks(self, base_url, video_id, dl_note=None, dl_errnote=None):
        # retrieve all fragments of a list of tracks with fake AJAX calls
        track_urls = []
        current_page = 1
        while True:
            # fake a AJAX request to retrieve a list fragment
            page_url = base_url + "?page=%d&list=main&_ajax=1" % current_page
            req = compat_urllib_request.Request(page_url, headers={"X-Requested-With": "XMLHttpRequest"}, method="GET")
            resp = self._download_webpage(req, video_id, note=dl_note + " (page %d)" % current_page, errnote=dl_errnote)

            # extract all track URLs from fragment
            urls = re.findall(r'm-play-button m-url="(?P<url>[^"]+)"', resp)
            # clean up URLs
            urls = map(clean_html, urls)
            # create absolute URLs
            urls = map(lambda u: "https://www.mixcloud.com" + u, urls)
            track_urls.extend(urls)

            # advance to next fragment, if any
            if " m-next-page-url=" in resp:
                current_page += 1
            else:
                break

        return track_urls

    def _handle_track_urls(self, urls):
        return map(lambda u: self.url_result(u, "Mixcloud"), urls)

    def _get_user_description(self, page_content):
        return self._html_search_regex(
            r'<div class="description-text">.*?<p>(?P<description>.*?)</p></div></div></div>',
            page_content,
            "user description",
            group="description",
            fatal=False,
            default="")

    def _get_username(self, page_content):
        return self._og_search_title(page_content)

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        user_id = mobj.group("user")
        list_type = mobj.group("type")

        # if only a profile URL was supplied, default to download all uploads
        if list_type is None:
            list_type = "uploads"

        video_id = "%s/%s" % (user_id, list_type)

        # download the user's profile to retrieve some metadata
        profile = self._download_webpage("https://www.mixcloud.com/%s/" % user_id,
                                         video_id,
                                         note="Downloading user profile",
                                         errnote="Unable to download user profile")

        username = self._get_username(profile)
        description = self._get_user_description(profile)

        # retrieve all page fragments of uploads, favorites or listens
        track_urls = self._fetch_tracks(
            "https://www.mixcloud.com/%s/%s/" % (user_id, list_type),
            video_id,
            dl_note="Downloading list of %s" % list_type,
            dl_errnote="Unable to download list of %s" % list_type)

        # let MixcloudIE handle each track URL
        entries = self._handle_track_urls(track_urls)

        return {
            '_type': 'playlist',
            'entries': entries,
            'title': "%s (%s)" % (username, list_type),
            'id': video_id,
            "description": description
        }


class MixcloudPlaylistIE(MixcloudUserIE):
    """
    Information extractor for Mixcloud playlists.
    """

    _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/(?P<user>[^/]+)/playlists/(?P<playlist>[^/]+)/?$'
    IE_NAME = 'mixcloud:playlist'

    _TESTS = [{
        'url': 'https://www.mixcloud.com/RedBullThre3style/playlists/tokyo-finalists-2015/',
        'info_dict': {
            'id': 'RedBullThre3style/playlists/tokyo-finalists-2015',
            'title': 'National Champions 2015',
            'description': 'md5:6ff5fb01ac76a31abc9b3939c16243a3',
        },
        'playlist_mincount': 16
    }, {
        'url': 'https://www.mixcloud.com/maxvibes/playlists/jazzcat-on-ness-radio/',
        'info_dict': {
            'id': 'maxvibes/playlists/jazzcat-on-ness-radio',
            'title': 'Jazzcat on Ness Radio',
            'description': 'md5:c2c51a1f1b8bb5442f2ca67c3dc4af27',
        },
        'playlist_mincount': 23
    }]

    def _get_playlist_title(self, page_content):
        return self._html_search_regex(
            r'<span class="main-list-title list-playlist-title ">(?P<title>.*?)</span>',
            page_content,
            "playlist title",
            group="title",
            fatal=True
        )

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        user_id = mobj.group("user")
        playlist_id = mobj.group("playlist")
        video_id = "%s/playlists/%s" % (user_id, playlist_id)

        # download the playlist page to retrieve some metadata
        profile = self._download_webpage(url,
                                         user_id,
                                         note="Downloading playlist page",
                                         errnote="Unable to download playlist page")

        description = self._get_user_description(profile)
        playlist_title = self._get_playlist_title(profile)

        # retrieve all page fragments of playlist
        track_urls = self._fetch_tracks(
            "https://www.mixcloud.com/%s/playlists/%s/" % (user_id, playlist_id),
            video_id,
            dl_note="Downloading tracklist of %s" % playlist_title,
            dl_errnote="Unable to tracklist of %s" % playlist_title)

        # let MixcloudIE handle each track
        entries = self._handle_track_urls(track_urls)

        return {
            '_type': 'playlist',
            'entries': entries,
            'title': playlist_title,
            'id': video_id,
            "description": description
        }