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import re
import json
import urllib
import base64
import hashlib
import requests
import OS


WBCLIENT = 'ssologin.js(v.1.3.18)'
sha1 = lambda x: hashlib.sha1(x).hexdigest()


def wblogin(username, password):
    session = requests.session(
        headers={
            'User-Agent': 'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHT'
                          'ML, like Gecko) Chrome/21.0.1180.89 Safari/537.1'
        }
    )
    resp = session.get(
        'http://login.sina.com.cn/sso/prelogin.php?entry=weibo&callback=sina'
        'SSOController.preloginCallBack&su=%s&client=%s' %
        (base64.b64encode(username), WBCLIENT)
    )
    pre_login_str = re.match(r'[^{]+({.+?})', resp.content).group(1)
    pre_login_json = json.loads(pre_login_str)
    data = {
        'entry': 'weibo',
        'gateway': 1,
        'from': '',
        'savestate': 7,
        'useticket': 1,
        'ssosimplelogin': 1,
        'su': base64.b64encode(urllib.quote(username)),
        'service': 'miniblog',
        'servertime': pre_login_json['servertime'],
        'nonce': pre_login_json['nonce'],
        'pcid': pre_login_json['pcid'],
        'vsnf': 1,
        'vsnval': '',
        'pwencode': 'wsse',
        'sp': sha1(sha1(sha1(password)) +
                   str(pre_login_json['servertime']) +
                   pre_login_json['nonce']),
        'encoding': 'UTF-8',
        'url': 'http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.si'
               'naSSOController.feedBackUrlCallBack',
        'returntype': 'META'
    }
    resp = session.post(
        'http://login.sina.com.cn/sso/login.php?client=%s' % WBCLIENT,
        data=data
    )
    login_url = re.search(r'replace\([\"\']([^\'\"]+)[\"\']',
                          resp.content).group(1)
    resp = session.get(login_url)
    login_str = re.match(r'[^{]+({.+?}})', resp.content).group(1)
    return json.loads(login_str)


if __name__ == '__main__':
    from pprint import pprint
    pprint(wblogin('XXXX@gmail.com', 'XXXX'))