#!/usr/bin/env python

__all__ = ['bilibili_download']

from ..common import *

from .sina import sina_download_by_vid
from .tudou import tudou_download_by_id
from .youku import youku_download_by_vid

import hashlib
import re

appkey = 'f3bb208b3d081dc8'
SECRETKEY_MINILOADER = '1c15888dc316e05a15fdd0a02ed6584f'

def get_srt_xml(id):
    url = 'http://comment.bilibili.com/%s.xml' % id
    return get_html(url)


def parse_srt_p(p):
    fields = p.split(',')
    assert len(fields) == 8, fields
    time, mode, font_size, font_color, pub_time, pool, user_id, history = fields
    time = float(time)

    mode = int(mode)
    assert 1 <= mode <= 8
    # mode 1~3: scrolling
    # mode 4: bottom
    # mode 5: top
    # mode 6: reverse?
    # mode 7: position
    # mode 8: advanced

    pool = int(pool)
    assert 0 <= pool <= 2
    # pool 0: normal
    # pool 1: srt
    # pool 2: special?

    font_size = int(font_size)

    font_color = '#%06x' % int(font_color)

    return pool, mode, font_size, font_color


def parse_srt_xml(xml):
    d = re.findall(r'<d p="([^"]+)">(.*)</d>', xml)
    for x, y in d:
        p = parse_srt_p(x)
    raise NotImplementedError()


def parse_cid_playurl(xml):
    from xml.dom.minidom import parseString
    try:
        doc = parseString(xml.encode('utf-8'))
        urls = [durl.getElementsByTagName('url')[0].firstChild.nodeValue for durl in doc.getElementsByTagName('durl')]
        return urls
    except:
        return []


def bilibili_download_by_cids(cids, title, output_dir='.', merge=True, info_only=False):
    urls = []
    for cid in cids:
        sign_this = hashlib.md5(bytes('cid={cid}&from=miniplay&player=1{SECRETKEY_MINILOADER}'.format(cid = cid, SECRETKEY_MINILOADER = SECRETKEY_MINILOADER), 'utf-8')).hexdigest()
        url = 'http://interface.bilibili.com/playurl?&cid=' + cid + '&from=miniplay&player=1' + '&sign=' + sign_this
        urls += [i
                 if not re.match(r'.*\.qqvideo\.tc\.qq\.com', i)
                 else re.sub(r'.*\.qqvideo\.tc\.qq\.com', 'http://vsrc.store.qq.com', i)
                 for i in parse_cid_playurl(get_content(url))]

    type_ = ''
    size = 0
    for url in urls:
        _, type_, temp = url_info(url)
        size += temp

    print_info(site_info, title, type_, size)
    if not info_only:
        download_urls(urls, title, type_, total_size=None, output_dir=output_dir, merge=merge)


def bilibili_download_by_cid(cid, title, output_dir='.', merge=True, info_only=False):
    sign_this = hashlib.md5(bytes('cid={cid}&from=miniplay&player=1{SECRETKEY_MINILOADER}'.format(cid = cid, SECRETKEY_MINILOADER = SECRETKEY_MINILOADER), 'utf-8')).hexdigest()
    url = 'http://interface.bilibili.com/playurl?&cid=' + cid + '&from=miniplay&player=1' + '&sign=' + sign_this
    urls = [i
            if not re.match(r'.*\.qqvideo\.tc\.qq\.com', i)
            else re.sub(r'.*\.qqvideo\.tc\.qq\.com', 'http://vsrc.store.qq.com', i)
            for i in parse_cid_playurl(get_content(url))]

    type_ = ''
    size = 0
    for url in urls:
        _, type_, temp = url_info(url)
        size += temp or 0

    print_info(site_info, title, type_, size)
    if not info_only:
        download_urls(urls, title, type_, total_size=None, output_dir=output_dir, merge=merge)


def bilibili_live_download_by_cid(cid, title, output_dir='.', merge=True, info_only=False):
    api_url = 'http://live.bilibili.com/api/playurl?cid=' + cid
    urls = parse_cid_playurl(get_content(api_url))

    for url in urls:
        _, type_, _ = url_info(url)
        size = 0
        print_info(site_info, title, type_, size)
        if not info_only:
            download_urls([url], title, type_, total_size=None, output_dir=output_dir, merge=merge)


def bilibili_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
    html = get_content(url)

    title = r1_of([r'<meta name="title" content="\s*([^<>]{1,999})\s*" />',
                   r'<h1[^>]*>\s*([^<>]+)\s*</h1>'], html)
    if title:
        title = unescape_html(title)
        title = escape_file_path(title)

    if re.match(r'https?://bangumi\.bilibili\.com/', url):
        # quick hack for bangumi URLs
        episode_id = r1(r'data-current-episode-id="(\d+)"', html)
        cont = post_content('http://bangumi.bilibili.com/web_api/get_source',
                            post_data={'episode_id': episode_id})
        cid = json.loads(cont)['result']['cid']
        bilibili_download_by_cid(str(cid), title, output_dir=output_dir, merge=merge, info_only=info_only)

    else:
        flashvars = r1_of([r'(cid=\d+)', r'(cid: \d+)', r'flashvars="([^"]+)"',
                           r'"https://[a-z]+\.bilibili\.com/secure,(cid=\d+)(?:&aid=\d+)?"'], html)
        assert flashvars
        flashvars = flashvars.replace(': ', '=')
        t, cid = flashvars.split('=', 1)
        cid = cid.split('&')[0]
        if t == 'cid':
            if re.match(r'https?://live\.bilibili\.com/', url):
                title = r1(r'<title>\s*([^<>]+)\s*</title>', html)
                bilibili_live_download_by_cid(cid, title, output_dir=output_dir, merge=merge, info_only=info_only)

            else:
                # multi-P
                cids = []
                pages = re.findall('<option value=\'([^\']*)\'', html)
                titles = re.findall('<option value=.*>\s*([^<>]+)\s*</option>', html)
                for i, page in enumerate(pages):
                    html = get_html("http://www.bilibili.com%s" % page)
                    flashvars = r1_of([r'(cid=\d+)',
                                       r'flashvars="([^"]+)"',
                                       r'"https://[a-z]+\.bilibili\.com/secure,(cid=\d+)(?:&aid=\d+)?"'], html)
                    if flashvars:
                        t, cid = flashvars.split('=', 1)
                        cids.append(cid.split('&')[0])
                    if url.endswith(page):
                        cids = [cid.split('&')[0]]
                        titles = [titles[i]]
                        break

                # no multi-P
                if not pages:
                    cids = [cid]
                    titles = [r1(r'<option value=.* selected>\s*([^<>]+)\s*</option>', html) or title]

                for i in range(len(cids)):
                    bilibili_download_by_cid(cids[i],
                                             titles[i],
                                             output_dir=output_dir,
                                             merge=merge,
                                             info_only=info_only)

        elif t == 'vid':
            sina_download_by_vid(cid, title=title, output_dir=output_dir, merge=merge, info_only=info_only)
        elif t == 'ykid':
            youku_download_by_vid(cid, title=title, output_dir=output_dir, merge=merge, info_only=info_only)
        elif t == 'uid':
            tudou_download_by_id(cid, title, output_dir=output_dir, merge=merge, info_only=info_only)
        else:
            raise NotImplementedError(flashvars)

    if not info_only and not dry_run:
        if not kwargs['caption']:
            print('Skipping danmaku.')
            return
        title = get_filename(title)
        print('Downloading %s ...\n' % (title + '.cmt.xml'))
        xml = get_srt_xml(cid)
        with open(os.path.join(output_dir, title + '.cmt.xml'), 'w', encoding='utf-8') as x:
            x.write(xml)


site_info = "bilibili.com"
download = bilibili_download
download_playlist = bilibili_download
