'''
Biligrab Lite 0.21
Beining@ACICFG
cnbeining[at]gmail.com
http://www.cnbeining.com
MIT licence
'''

import sys
import os
from StringIO import StringIO
import gzip
import urllib2
import hashlib

from xml.dom.minidom import parseString

global vid
global cid
global partname
global title
global videourl
global part_now

global appkey
global secretkey
appkey='c1b107428d337928';
secretkey = 'ea85624dfcf12d7cc7b2b3a94fac1f2c'

def list_del_repeat(list):
    """delete repeating items in a list, and keep the order.
    http://www.cnblogs.com/infim/archive/2011/03/10/1979615.html"""
    l2 = []
    [l2.append(i) for i in list if not i in l2]
    return(l2)

#----------------------------------------------------------------------
def find_cid_api(vid, p):
    """find cid and print video detail"""
    global cid
    global partname
    global title
    global videourl
    cookiepath = './bilicookies'
    try:
        cookies = open(cookiepath, 'r').readline()
        #print(cookies)
    except:
        print('Cannot read cookie, may affect some videos...')
        cookies = ''
    cid = 0
    title = ''
    partname = ''
    if str(p) is '0' or str(p) is '1':
        str2Hash = 'appkey=85eb6835b0a1034e&id=' + str(vid) + '&type=xml2ad42749773c441109bdc0191257a664'
        sign_this = hashlib.md5(str2Hash.encode('utf-8')).hexdigest()
        biliurl = 'https://api.bilibili.com/view?appkey=85eb6835b0a1034e&id=' + str(vid) + '&type=xml&sign=' + sign_this
    else:
        str2Hash = 'appkey=85eb6835b0a1034e&id=' + str(vid) + '&page=' + str(p) + '&type=xml2ad42749773c441109bdc0191257a664'
        sign_this = hashlib.md5(str2Hash.encode('utf-8')).hexdigest()
        biliurl = 'https://api.bilibili.com/view?appkey=85eb6835b0a1034e&id=' + str(vid) + '&page=' + str(p) + '&type=xml&sign=' + sign_this
        #print(biliurl)
    videourl = 'http://www.bilibili.tv/video/av'+ str(vid)+'/index_'+ str(p)+'.html'
    print('Fetching webpage...')
    print(biliurl)
    try:
        request = urllib2.Request(biliurl, headers={ 'User-Agent' : 'Biligrab /0.8 (cnbeining@gmail.com)', 'Cache-Control': 'no-cache', 'Pragma': 'no-cache' , 'Cookie': cookies})
        response = urllib2.urlopen(request)
        data = response.read()
        dom = parseString(data)
        for node in dom.getElementsByTagName('cid'):
            if node.parentNode.tagName == "info":
                cid = node.toxml()[5:-6]
                print('cid is ' + cid)
                break