import urllib
import urlparse
from django.contrib.auth.decorators import login_required
from django.core.urlresolvers import reverse
from django.contrib.auth.models import User
from django.contrib.sites.models import Site
from django.http import HttpResponseForbidden, HttpResponseRedirect
from django.conf import settings
from apps.social.models import MSocialServices
from utils import log as logging
from utils.user_functions import ajax_login_required
from utils.view_functions import render_to
from utils import json_functions as json
from vendor import facebook
from vendor import tweepy

@login_required
@render_to('social/social_connect.xhtml')
def twitter_connect(request):
    twitter_consumer_key = settings.TWITTER_CONSUMER_KEY
    twitter_consumer_secret = settings.TWITTER_CONSUMER_SECRET
    
    oauth_token = request.REQUEST.get('oauth_token')
    oauth_verifier = request.REQUEST.get('oauth_verifier')
    denied = request.REQUEST.get('denied')
    if denied:
        logging.user(request, "~BB~FRDenied Twitter connect")
        return {'error': 'Denied! Try connecting again.'}
    elif oauth_token and oauth_verifier:
        try:
            auth = tweepy.OAuthHandler(twitter_consumer_key, twitter_consumer_secret)
            auth.set_request_token(oauth_token, oauth_verifier)
            access_token = auth.get_access_token(oauth_verifier)
            api = tweepy.API(auth)
            twitter_user = api.me()
        except (tweepy.TweepError, IOError):
            logging.user(request, "~BB~FRFailed Twitter connect")
            return dict(error="Twitter has returned an error. Try connecting again.")

        # Be sure that two people aren't using the same Twitter account.
        existing_user = MSocialServices.objects.filter(twitter_uid=unicode(twitter_user.id))
        if existing_user and existing_user[0].user_id != request.user.pk:
            user = User.objects.get(pk=existing_user[0].user_id)
            logging.user(request, "~BB~FRFailed Twitter connect, another user: %s" % user.username)
            return dict(error=("Another user (%s, %s) has "
                               "already connected with those Twitter credentials."
                               % (user.username, user.email or "no email")))

        social_services, _ = MSocialServices.objects.get_or_create(user_id=request.user.pk)
        social_services.twitter_uid = unicode(twitter_user.id)
        social_services.twitter_access_key = access_token.key
        social_services.twitter_access_secret = access_token.secret
        social_services.save()
        social_services.sync_twitter_friends()
        logging.user(request, "~BB~FRFinishing Twitter connect")
        return {}
    else:
        # Start the OAuth process
        auth = tweepy.OAuthHandler(twitter_consumer_key, twitter_consumer_secret)
        auth_url = auth.get_authorization_url()
        logging.user(request, "~BB~FRStarting Twitter connect")
        return {'next': auth_url}

    
@login_required
@render_to('social/social_connect.xhtml')
def facebook_connect(request):
    facebook_app_id = settings.FACEBOOK_APP_ID
    facebook_secret = settings.FACEBOOK_SECRET
    
    args = {
        "client_id": facebook_app_id,
        "redirect_uri": "http://" + Site.objects.get_current().domain + reverse('facebook-connect'),
        "scope": "offline_access,user_website",
        "display": "popup",
    }
    
    verification_code = request.REQUEST.get('code')
    if verification_code:
        args["client_secret"] = facebook_secret
        args["code"] = verification_code
        uri = "https://graph.facebook.com/oauth/access_token?" + \
                urllib.urlencode(args)
        response_text = urllib.urlopen(uri).read()
        response = urlparse.parse_qs(response_text)

        if "access_token" not in response:
            logging.user(request, "~BB~FRFailed Facebook connect")
            return dict(error="Facebook has returned an error. Try connecting again.")

        access_token = response["access_token"][-1]

        # Get the user's profile.
        graph = facebook.GraphAPI(access_token)
        profile = graph.get_object("me")
        uid = profile["id"]

        # Be sure that two people aren't using the same Facebook account.
        existing_user = MSocialServices.objects.filter(facebook_uid=uid)
        if existing_user and existing_user[0].user_id != request.user.pk:
            user = User.objects.get(pk=existing_user[0].user_id)
            logging.user(request, "~BB~FRFailed FB connect, another user: %s" % user.username)
            return dict(error=("Another user (%s, %s) has "
                               "already connected with those Facebook credentials."
                               % (user.username, user.email or "no email")))

        social_services, _ = MSocialServices.objects.get_or_create(user_id=request.user.pk)
        social_services.facebook_uid = uid
        social_services.facebook_access_token = access_token
        social_services.save()
        social_services.sync_facebook_friends()
        logging.user(request, "~BB~FRFinishing Facebook connect")
        return {}
    elif request.REQUEST.get('error'):
        logging.user(request, "~BB~FRFailed Facebook connect")
        return {'error': '%s... Try connecting again.' % request.REQUEST.get('error')}
    else:
        # Start the OAuth process
        logging.user(request, "~BB~FRStarting Facebook connect")
        url = "https://www.facebook.com/dialog/oauth?" + urllib.urlencode(args)
        return {'next': url}
        
@ajax_login_required
def twitter_disconnect(request):
    logging.user(request, "~BB~FRDisconnecting Twitter")
    social_services = MSocialServices.objects.get(user_id=request.user.pk)
    social_services.disconnect_twitter()
    
    return HttpResponseRedirect(reverse('friends'))

@ajax_login_required
def facebook_disconnect(request):
    logging.user(request, "~BB~FRDisconnecting Facebook")
    social_services = MSocialServices.objects.get(user_id=request.user.pk)
    social_services.disconnect_facebook()
    
    return HttpResponseRedirect(reverse('friends'))
    
@ajax_login_required
@json.json_view
def follow_twitter_account(request):
    username = request.POST['username']
    code = 1
    message = "OK"
    
    logging.user(request, "~BB~FRFollowing Twitter: %s" % username)
    
    if username not in ['samuelclay', 'newsblur']:
        return HttpResponseForbidden
    
    social_services = MSocialServices.objects.get(user_id=request.user.pk)
    try:
        api = social_services.twitter_api()
        api.create_friendship(username)
    except tweepy.TweepError, e:
        code = -1
        message = e
        
    return {'code': code, 'message': message}
    
@ajax_login_required
@json.json_view
def unfollow_twitter_account(request):
    username = request.POST['username']
    code = 1
    message = "OK"
    
    logging.user(request, "~BB~FRUnfollowing Twitter: %s" % username)
        
    if username not in ['samuelclay', 'newsblur']:
        return HttpResponseForbidden
    
    social_services = MSocialServices.objects.get(user_id=request.user.pk)
    try:
        api = social_services.twitter_api()
        api.destroy_friendship(username)
    except tweepy.TweepError, e:
        code = -1
        message = e
    
    return {'code': code, 'message': message}