VK retrieve friends of friends

friendsOfFriends.vk

var r = API.friends.get({"user_id": Args.user_id, "count" : "24", "offset": Args.offset, "fields": "domain"});
var friends = [];

var i = 0;
while(i < r.items.length){
    var ff = API.friends.get({"user_id": r.items[i].id});
    friends.push({
        "id": r.items[i].id,
        "first_name": r.items[i].first_name,
        "last_name": r.items[i].last_name,
        "domain": r.items[i].domain,
        "friends_count": ff.count,
        "friends": ff.items
    });
    
    i = i + 1;
}

return {
    "count": r.count,
    "friends": friends
};

vk_ff.py

import json
import urllib.request

APP_ID = "4998098"
PERMISSIONS = "offline"
REDIRECT_URI = "https://oauth.vk.com/blank.html"
DISPLAY = "page"
API_VERSION = "5.34"


def get_auth_url():
    return ("https://oauth.vk.com/authorize?"
            "client_id=" + APP_ID + "&"
            "scope=" + PERMISSIONS + "&"
            "redirect_uri=" + REDIRECT_URI + "&"
            "display=" + DISPLAY + "&"
            "v=" + API_VERSION + "&"
            "response_type=token")

"""
This class uses https://vk.com/dev/execute feature of vk api.

VK execute script: execute.friendsOfFriends(user_id, offset)
"""


class Vk:
    def __init__(self, access_token):
        self.access_token = access_token

    def get_friends_of_friends(self, user_id):
        url = "https://api.vk.com/method/execute.friendsOfFriends?"
        url += "user_id=" + str(user_id) + "&"
        url += "offset=" + "{offset}" + "&"
        url += "v=" + API_VERSION + "&"
        url += "access_token=" + self.access_token

        friends = []

        offset = 0
        while True:
            response = urllib.request.urlopen(url.format(offset=str(offset)))

            if response.status != 200:
                return None

            response = response.read().decode(response.headers.get_content_charset())
            response = json.loads(response).get("response")

            if response is None:
                return None

            count = response.get("count", -1)

            if count < 0:
                continue

            added = response.get("friends")
            friends += added
            offset += len(added)

            if count == len(friends):
                break

        return friends


if __name__ == "__main__":
    print(get_auth_url())
    token = input("Enter access token: ")
    vk = Vk(token)
    print(vk.get_friends_of_friends(42153047))