import datetime
import zlib
import hashlib
import mongoengine as mongo
from django.conf import settings
from django.contrib.auth.models import User
from vendor import facebook
from vendor import tweepy


class MSharedStory(mongo.Document):
    user_id                  = mongo.IntField()
    shared_date              = mongo.DateTimeField()
    comments                 = mongo.StringField()
    has_comments             = mongo.BooleanField(default=False)
    story_feed_id            = mongo.IntField()
    story_date               = mongo.DateTimeField()
    story_title              = mongo.StringField(max_length=1024)
    story_content            = mongo.StringField()
    story_content_z          = mongo.BinaryField()
    story_original_content   = mongo.StringField()
    story_original_content_z = mongo.BinaryField()
    story_content_type       = mongo.StringField(max_length=255)
    story_author_name        = mongo.StringField()
    story_permalink          = mongo.StringField()
    story_guid               = mongo.StringField(unique_with=('user_id',))
    story_tags               = mongo.ListField(mongo.StringField(max_length=250))
    
    meta = {
        'collection': 'shared_stories',
        'indexes': [('user_id', '-shared_date'), ('user_id', 'story_feed_id'), 'story_feed_id'],
        'index_drop_dups': True,
        'ordering': ['-shared_date'],
        'allow_inheritance': False,
    }
    
    def save(self, *args, **kwargs):
        if self.story_content:
            self.story_content_z = zlib.compress(self.story_content)
            self.story_content = None
        if self.story_original_content:
            self.story_original_content_z = zlib.compress(self.story_original_content)
            self.story_original_content = None
        super(MSharedStory, self).save(*args, **kwargs)


class MSocialServices(mongo.Document):
    user_id               = mongo.IntField()
    autofollow            = mongo.BooleanField(default=True)
    twitter_uid           = mongo.StringField()
    twitter_access_key    = mongo.StringField()
    twitter_access_secret = mongo.StringField()
    twitter_friend_ids    = mongo.ListField(mongo.StringField())
    twitter_picture_url   = mongo.StringField()
    twitter_username      = mongo.StringField()
    twitter_refresh_date  = mongo.DateTimeField()
    facebook_uid          = mongo.StringField()
    facebook_access_token = mongo.StringField()
    facebook_friend_ids   = mongo.ListField(mongo.StringField())
    facebook_picture_url  = mongo.StringField()
    facebook_refresh_date = mongo.DateTimeField()
    
    meta = {
        'collection': 'social_services',
        'indexes': ['user_id', 'twitter_friend_ids', 'facebook_friend_ids', 'twitter_uid', 'facebook_uid'],
        'allow_inheritance': False,
    }
        
    def to_json(self):
        user = User.objects.get(pk=self.user_id)
        return {
            'autofollow': self.autofollow,
            'friends': self.friends(), 
            'services': {
                'twitter': {
                    'twitter_username': self.twitter_username,
                    'twitter_picture_url': self.twitter_picture_url,
                    'twitter_uid': self.twitter_uid,
                },
                'facebook': {
                    'facebook_uid': self.facebook_uid,
                    'facebook_picture_url': self.facebook_picture_url,
                },
                'gravatar': {
                    'gravatar_picture_url': "http://www.gravatar.com/avatar/" + \
                                            hashlib.md5(user.email).hexdigest()
                }
            }
        }
    
    def friends(self):
        return []
        
    def twitter_api(self):
        twitter_consumer_key = settings.TWITTER_CONSUMER_KEY
        twitter_consumer_secret = settings.TWITTER_CONSUMER_SECRET
        auth = tweepy.OAuthHandler(twitter_consumer_key, twitter_consumer_secret)
        auth.set_access_token(self.twitter_access_key, self.twitter_access_secret)
        api = tweepy.API(auth)
        return api
    
    def facebook_api(self):
        graph = facebook.GraphAPI(self.facebook_access_token)
        return graph

    def sync_twitter_friends(self):
        api = self.twitter_api()
        if not api:
            return
            
        friend_ids = list(unicode(friend.id) for friend in tweepy.Cursor(api.friends).items())
        if not friend_ids:
            return
        
        twitter_user = api.me()
        self.twitter_picture_url = twitter_user.profile_image_url
        self.twitter_username = twitter_user.screen_name
        self.twitter_friend_ids = friend_ids
        self.twitter_refreshed_date = datetime.datetime.utcnow()
        self.save()
        
    def sync_facebook_friends(self):
        graph = self.facebook_api()
        if not graph:
            return

        friends = graph.get_connections("me", "friends")
        if not friends:
            return

        facebook_friend_ids = [unicode(friend["id"]) for friend in friends["data"]]
        self.facebook_friend_ids = facebook_friend_ids
        self.facebook_refresh_date = datetime.datetime.utcnow()
        self.facebook_picture_url = "//graph.facebook.com/%s/picture" % self.facebook_uid
        self.save()

    def disconnect_twitter(self):
        self.twitter_uid = None
        self.save()
        
    def disconnect_facebook(self):
        self.facebook_uid = None
        self.save()