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import pickle
import os
import time
import hashlib
import sys
from feedgen.feed import FeedGenerator
from . import (
youtube,
)
from threading import Thread
class PodcastUpdater:
def __init__(self, config):
self.podcasts = config.podcasts
self.youtube = youtube.Youtube(config.youtube["api-key"])
self.downloads = config.downloads
if sys.platform == "linux" and not hasattr(sys, "real_prefix"):
self.data_dir = "/var/lib/youtube-podcaster"
else:
self.data_dir = "%s/var/lib/youtube-podcaster" % (sys.prefix)
os.makedirs(self.data_dir, 0o755, True)
self.feeds_file = "%s/feeds.dump" % (self.data_dir)
if os.path.isfile(self.feeds_file):
with open(self.feeds_file, "rb") as feeds:
self.feeds = pickle.load(feeds)
else:
self.feeds = {}
def get_xml(self, channel, playlist):
channel = channel.replace('_', ' ')
playlist = playlist.replace('_', ' ')
for podcast in self.podcasts:
if podcast["username"] == channel:
break
else:
return None
if playlist not in podcast["playlists"]:
return None
xml = self.update_podcast(channel, playlist)
if xml:
return open(xml).read()
def update_podcast(self, channel, playlist):
feed_id = hashlib.sha1(bytes("%s %s" % (channel, playlist), "UTF-8")).hexdigest()
feed_file = "%s/%s.xml" % (self.data_dir, feed_id)
yt_channel = self.youtube.get_channel(channel)[0]
yt_playlists = self.youtube.get_playlists(yt_channel, 50)
for yt_playlist in yt_playlists:
if yt_playlist["snippet"]["title"] == playlist:
break
else:
return None
if feed_id in self.feeds:
feed = self.feeds[feed_id]
else:
feed = self.add_feed(feed_id, yt_playlist)
if feed.last_updated < time.time() - 600:
self.populate_feed(feed, feed_id, yt_playlist, max_results=1)
feed.rss_file(feed_file)
with open(self.feeds_file, "wb") as feeds:
pickle.dump(self.feeds, feeds)
return feed_file
def add_feed(self, feed_id, yt_playlist):
feed = FeedGenerator()
feed.load_extension("podcast")
feed.id(feed_id)
feed.title(yt_playlist["snippet"]["title"])
feed.author({"name": yt_playlist["snippet"]["channelTitle"]})
feed.description(yt_playlist["snippet"]["description"])
feed.logo(yt_playlist["snippet"]["thumbnails"]["standard"]["url"])
feed.link(href="https://www.youtube.com/playlist?list=%s" % (yt_playlist["id"]))
feed.rss_str(pretty=True)
feed.last_updated = 0
self.feeds[feed_id] = feed
return feed
def populate_feed(self, feed, feed_id, yt_playlist, max_results=5):
videos = self.youtube.get_playlist_items(yt_playlist, max_results)
file_format = self.downloads["format"]
download_path = self.downloads["path"]
download_url = self.downloads["url"]
downloader = youtube.Downloader.get_instance(file_format, download_path, download_url)
threads = []
entries = feed.entry()
for video in videos:
video_id = hashlib.sha1(bytes(video["id"], "UTF-8")).hexdigest()
for entry in entries:
if entry.id() == video_id:
break
else:
t = Thread(target=self.process_video, args=(downloader, video, video_id, feed_id))
threads.append(t)
t.start()
for t in threads:
t.join()
feed.last_updated = time.time()
def process_video(self, downloader, video, video_id, feed_id):
url, size, mime = downloader.download(video, video_id, feed_id)
feed = self.feeds[feed_id]
feed_entry = feed.add_entry()
feed_entry.id(video_id)
feed_entry.guid(video_id)
feed_entry.title(video["snippet"]["title"])
feed_entry.description(video["snippet"]["description"])
feed_entry.published(video["snippet"]["publishedAt"])
feed_entry.enclosure(url, size, mime)
# vim: set ts=8 sw=4 tw=0 et :
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