#!/usr/bin/env python3

from youtube_api import YouTubeAPI
import sys
import youtube_dl

# Read YouTube API Key.
def getYouTubeAPIKey():
  return open('youtube.key', 'r').read()

def getUploadTime(info):
  return info[1]

def getYear(info):
  return int(getUploadTime(info)[:4])

def getPrivacy(info):
  return info[6]

# Print out information about a video.
def printVideoInfo(info):
  title, date, channel, channelId, description, tags, privacy = info
  print('Title: ' + title)
  print('Date: ' + date)
  print('Channel: {} ({})'.format(channel, channelId) )
  print('Description: ' + description)
  print('Tags: ', tags)
  print('Privacy: ' + privacy)  

api = YouTubeAPI(getYouTubeAPIKey())
videos = api.getPlaylistVideos(sys.argv[1])

videoInfo = [api.getVideoInfo(video['snippet']['resourceId']['videoId']) for video in videos]
filteredVideos = [video for video in videoInfo if getPrivacy(video) == 'unlisted' and getYear(video) <= 2017]

for v in filteredVideos:
  print(getYear(v))