import requests
import httplib2
from googleapiclient.discovery import build
from googleapiclient.http import MediaFileUpload
from oauth2client.client import AccessTokenCredentials

from settings import *
from downloader import resumable_upload


def get_auth_code():
    """ Get access token for connect to youtube api """
    oauth_url = 'https://accounts.google.com/o/oauth2/token'
    data = {
        "refresh_token": YOUTUBE_REFRESH_TOKEN,
        "client_id": YOUTUBE_CLIENT_ID,
        "client_secret": YOUTUBE_CLIENT_SECRET,
        "grant_type": "refresh_token",
    }
    headers = {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Accept': 'application/json'
    }

    response = requests.post(oauth_url, data=data, headers=headers)
    return response.json()['access_token']


def get_authenticated_service():
    """ Create youtube oauth2 connection """
    credentials = AccessTokenCredentials(
        access_token=get_auth_code(), user_agent='my-awesome-project/1.0'
    )
    return build('youtube', 'v3', http=credentials.authorize(httplib2.Http()))


def initialize_upload(youtube, metadata: dict, video_path: str):
    """ Create youtube upload data """
    # create video meta data
    # Call the API's videos.insert method to create and upload the video
    insert_request = youtube.videos().insert(
        part=",".join(metadata.keys()), body=metadata,
        media_body=MediaFileUpload(video_path, chunksize=-1, resumable=True))
    # wait for file uploading
    return resumable_upload(insert_request)