import os
import json
from flask import Flask, redirect, url_for, session, request, jsonify, Markup
from flask_oauthlib.client import OAuth

QQ_APP_ID = os.getenv('QQ_APP_ID', '101187283')
QQ_APP_KEY = os.getenv('QQ_APP_KEY', '993983549da49e384d03adfead8b2489')

app = Flask(__name__)
app.debug = True
app.secret_key = 'development'
oauth = OAuth(app)

qq = oauth.remote_app(
  'qq',
  consumer_key=QQ_APP_ID,
  consumer_secret=QQ_APP_KEY,
  base_url='https://graph.qq.com',
  request_token_url=None,
  request_token_params={'scope': 'get_user_info'},
  access_token_url='/oauth2.0/token',
  authorize_url='/oauth2.0/authorize',
)


def json_to_dict(x):
  '''OAuthResponse class can't not parse the JSON data with content-type
  text/html, so we need reload the JSON data manually'''
  if x.find('callback') > -1:
    pos_lb = x.find('{')
    pos_rb = x.find('}')
    x = x[pos_lb:pos_rb + 1]
  try:
    return json.loads(x, encoding='utf-8')
  except:
    return x


def update_qq_api_request_data(data={}):
  '''Update some required parameters for OAuth2.0 API calls'''
  defaults = {
    'openid': session.get('qq_openid'),
    'access_token': session.get('qq_token')[0],
    'oauth_consumer_key': QQ_APP_ID,
  }
  defaults.update(data)
  return defaults


@app.route('/')
def index():
  '''just for verify website owner here.'''
  return Markup('''<meta property="qc:admins" '''
         '''content="226526754150631611006375" />''')


@app.route('/user_info')
def get_user_info():
  if 'qq_token' in session:
    data = update_qq_api_request_data()
    resp = qq.get('/user/get_user_info', data=data)
    return jsonify(status=resp.status, data=resp.data)
  return redirect(url_for('login'))


@app.route('/login')
def login():
  return qq.authorize(callback=url_for('authorized', _external=True))


@app.route('/logout')
def logout():
  session.pop('qq_token', None)
  return redirect(url_for('get_user_info'))


@app.route('/login/authorized')
def authorized():
  resp = qq.authorized_response()
  if resp is None:
    return 'Access denied: reason=%s error=%s' % (
      request.args['error_reason'],
      request.args['error_description']
    )
  session['qq_token'] = (resp['access_token'], '')

  # Get openid via access_token, openid and access_token are needed for API calls
  resp = qq.get('/oauth2.0/me', {'access_token': session['qq_token'][0]})
  resp = json_to_dict(resp.data)
  if isinstance(resp, dict):
    session['qq_openid'] = resp.get('openid')

  return redirect(url_for('get_user_info'))


@qq.tokengetter
def get_qq_oauth_token():
  return session.get('qq_token')


if __name__ == '__main__':
  app.run()

headers = {u'Authorization': u'Bearer 83F40E96FB6882686F4DF1E17105D04E'}

def convert_keys_to_string(dictionary):
  """Recursively converts dictionary keys to strings."""
  if not isinstance(dictionary, dict):
    return dictionary
  return dict((str(k), convert_keys_to_string(v))
    for k, v in dictionary.items())

def change_qq_header(uri, headers, body):
  headers = convert_keys_to_string(headers)
  return uri, headers, body

qq.pre_request = change_qq_header