@socketio.on('add blog')
@admin_only
def add_blog(blog):
    scheme = blog_schema.load(blog, partial=True)
    known_tags = {}
    avoided_tags = Tag.query.filter(
            Tag.banned == True).all()
    tumblr_key = 'Gm7u68GMu8RCQmIVV1vmr7QlToZ8rYKrzr1HsULlmK0doez73o'
    http = urllib3.PoolManager()
    blog_json_url = "https://api.tumblr.com/v2/blog/"+scheme.data.url+"/posts/photo?api_key="+tumblr_key
    r = http.request('GET', blog_json_url)
    data = json.loads(r.data.decode('utf-8'))
    if data["meta"]["status"] is 200:
        b = Blog(name=scheme.data.name, url=scheme.data.url)
        db.session.add(b)
        total_posts = data["response"]["total_posts"]
        blog_json_url+="&offset="
        for i in range(0,total_posts,50):
            r = http.request('GET', blog_json_url+str(i))
            data = json.loads(r.data.decode('utf-8'))
            for post in data["response"]["posts"]:
                if post["type"] == "photo":
                    for photo in post["photos"]:
                        url_gif = photo["original_size"]["url"]
                        if url_gif[-3:] == "gif":
                            # photo["original_size"]["width"] pour trier si le gif est trop petit ?
                            gif = Gif(url=url_gif)
                            db.session.add(gif)
                            for l_tag in post["tags"]:
                                # sometimes l_tag is a list of tag seperated by blank spaces
                                # so we need to split this string ang get a list of tags
                                l_tag = l_tag.split(' ')
                                for tag in l_tag:
                                    tag = tag.lower()
                                    if not tag.isspace():
                                        if tag not in avoided_tags and len(tag)>2:
                                                if tag not in known_tags :
                                                    o = Tag(name=tag)
                                                    db.session.add(o)
                                                    db.session.commit()
                                                    known_tags[tag] = o
                                                if known_tags[tag] not in gif.tags :
                                                    gif.tags.append(known_tags[tag])
                            db.session.commit()
        return jsonify(success=True)
    else:
        return jsonify(success=True, error="blog invalid or offline")