import urllib3
import json
import time

def getYoutubeCommentApi(videoId):
  http = urllib3.PoolManager()
  comments=[];
  nextPage="";
  while True:
    r=http.request('POST','http://ytcomments.klostermann.ca/api',body='videoID='+videoId+nextPage)
    json_data = json.loads(r.data)
    if 'nextPageToken' in json_data.keys():
        if json_data['pageToken'] == json_data['nextPageToken']:
           time.sleep(1)
           continue
        else:
           comments=comments+json_data['comments']
        nextPage="&pageToken="+json_data['nextPageToken']
        print("fetch"+nextPage)
    else:
      break
  return comments

c=getYoutubeCommentApi('XRuKSn3yZZA')