#!/usr/bin/python

import os
import re

import google.oauth2.credentials
import google_auth_oauthlib.flow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google_auth_oauthlib.flow import InstalledAppFlow


# The CLIENT_SECRETS_FILE variable specifies the name of a file that contains
# the OAuth 2.0 information for this application, including its client_id and
# client_secret. You can acquire an OAuth 2.0 client ID and client secret from
# the {{ Google Cloud Console }} at
# {{ https://cloud.google.com/console }}.
# Please ensure that you have enabled the YouTube Data API for your project.
# For more information about using OAuth2 to access the YouTube Data API, see:
#   https://developers.google.com/youtube/v3/guides/authentication
# For more information about the client_secrets.json file format, see:
#   https://developers.google.com/api-client-library/python/guide/aaa_client_secrets
CLIENT_SECRETS_FILE = 'client_secret.json'

# This OAuth 2.0 access scope allows for read-only access to the authenticated
# user's account, but not other types of account access.
SCOPES = ['https://www.googleapis.com/auth/youtube.readonly']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3' 

# Authorize the request and store authorization credentials.
def get_authenticated_service():
  flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRETS_FILE, SCOPES)
  credentials = flow.run_console()
  return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)
  
# Retrieve a list of the liveStream resources associated with the currently
# authenticated user's channel.
def list_streams(youtube):
  print 'Live streams:'

  list_streams_request = youtube.liveStreams().list(
    part='id,snippet',
    mine=True,
    maxResults=50
  ) 
    
  while list_streams_request:
    list_streams_response = list_streams_request.execute()
  
    for stream in list_streams_response.get('items', []):
      print '%s (%s)' % (stream['snippet']['title'], stream['id'])
    
    list_streams_request = youtube.liveStreams().list_next(
      list_streams_request, list_streams_response)
    
if __name__ == '__main__':
  youtube = get_authenticated_service()
  try:
    list_streams(youtube)
  except HttpError, e:
    print 'An HTTP error %d occurred:\n%s' % (e.resp.status, e.content)