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from youtube import util, yt_data_extract
from youtube import yt_app
import settings
import os
import json
import html
import gevent
import urllib
import math
import flask
from flask import request
playlists_directory = os.path.join(settings.data_dir, "playlists")
thumbnails_directory = os.path.join(settings.data_dir, "playlist_thumbnails")
def video_ids_in_playlist(name):
try:
with open(os.path.join(playlists_directory, name + ".txt"), 'r', encoding='utf-8') as file:
videos = file.read()
return set(json.loads(video)['id'] for video in videos.splitlines())
except FileNotFoundError:
return set()
def add_to_playlist(name, video_info_list):
if not os.path.exists(playlists_directory):
os.makedirs(playlists_directory)
ids = video_ids_in_playlist(name)
missing_thumbnails = []
with open(os.path.join(playlists_directory, name + ".txt"), "a", encoding='utf-8') as file:
for info in video_info_list:
id = json.loads(info)['id']
if id not in ids:
file.write(info + "\n")
missing_thumbnails.append(id)
gevent.spawn(download_thumbnails, name, missing_thumbnails)
def download_thumbnail(playlist_name, video_id):
url = "https://i.ytimg.com/vi/" + video_id + "/mqdefault.jpg"
save_location = os.path.join(thumbnails_directory, playlist_name, video_id + ".jpg")
try:
thumbnail = util.fetch_url(url, report_text="Saved local playlist thumbnail: " + video_id)
except urllib.error.HTTPError as e:
print("Failed to download thumbnail for " + video_id + ": " + str(e))
return
try:
f = open(save_location, 'wb')
except FileNotFoundError:
os.makedirs(os.path.join(thumbnails_directory, playlist_name))
f = open(save_location, 'wb')
f.write(thumbnail)
f.close()
def download_thumbnails(playlist_name, ids):
# only do 5 at a time
# do the n where n is divisible by 5
i = -1
for i in range(0, int(len(ids)/5) - 1 ):
gevent.joinall([gevent.spawn(download_thumbnail, playlist_name, ids[j]) for j in range(i*5, i*5 + 5)])
# do the remainders (< 5)
gevent.joinall([gevent.spawn(download_thumbnail, playlist_name, ids[j]) for j in range(i*5 + 5, len(ids))])
def get_local_playlist_videos(name, offset=0, amount=50):
try:
thumbnails = set(os.listdir(os.path.join(thumbnails_directory, name)))
except FileNotFoundError:
thumbnails = set()
missing_thumbnails = []
videos = []
with open(os.path.join(playlists_directory, name + ".txt"), 'r', encoding='utf-8') as file:
data = file.read()
videos_json = data.splitlines()
for video_json in videos_json:
try:
info = json.loads(video_json)
if info['id'] + ".jpg" in thumbnails:
info['thumbnail'] = "/youtube.com/data/playlist_thumbnails/" + name + "/" + info['id'] + ".jpg"
else:
info['thumbnail'] = util.get_thumbnail_url(info['id'])
missing_thumbnails.append(info['id'])
info['type'] = 'video'
yt_data_extract.add_extra_html_info(info)
videos.append(info)
except json.decoder.JSONDecodeError:
if not video_json.strip() == '':
print('Corrupt playlist video entry: ' + video_json)
gevent.spawn(download_thumbnails, name, missing_thumbnails)
return videos[offset:offset+amount], len(videos)
def get_playlist_names():
try:
items = os.listdir(playlists_directory)
except FileNotFoundError:
return
for item in items:
name, ext = os.path.splitext(item)
if ext == '.txt':
yield name
def remove_from_playlist(name, video_info_list):
ids = [json.loads(video)['id'] for video in video_info_list]
with open(os.path.join(playlists_directory, name + ".txt"), 'r', encoding='utf-8') as file:
videos = file.read()
videos_in = videos.splitlines()
videos_out = []
for video in videos_in:
if json.loads(video)['id'] not in ids:
videos_out.append(video)
with open(os.path.join(playlists_directory, name + ".txt"), 'w', encoding='utf-8') as file:
file.write("\n".join(videos_out) + "\n")
try:
thumbnails = set(os.listdir(os.path.join(thumbnails_directory, name)))
except FileNotFoundError:
pass
else:
to_delete = thumbnails & set(id + ".jpg" for id in ids)
for file in to_delete:
os.remove(os.path.join(thumbnails_directory, name, file))
return len(videos_out)
@yt_app.route('/playlists', methods=['GET'])
@yt_app.route('/playlists/<playlist_name>', methods=['GET'])
def get_local_playlist_page(playlist_name=None):
if playlist_name is None:
playlists = [(name, util.URL_ORIGIN + '/playlists/' + name) for name in get_playlist_names()]
return flask.render_template('local_playlists_list.html', playlists=playlists)
else:
page = int(request.args.get('page', 1))
offset = 50*(page - 1)
videos, num_videos = get_local_playlist_videos(playlist_name, offset=offset, amount=50)
return flask.render_template('local_playlist.html',
playlist_name = playlist_name,
videos = videos,
num_pages = math.ceil(num_videos/50),
parameters_dictionary = request.args,
)
@yt_app.route('/playlists/<playlist_name>', methods=['POST'])
def path_edit_playlist(playlist_name):
'''Called when making changes to the playlist from that playlist's page'''
if request.values['action'] == 'remove':
videos_to_remove = request.values.getlist('video_info_list')
number_of_videos_remaining = remove_from_playlist(playlist_name, videos_to_remove)
redirect_page_number = min(int(request.values.get('page', 1)), math.ceil(number_of_videos_remaining/50))
return flask.redirect(util.URL_ORIGIN + request.path + '?page=' + str(redirect_page_number))
else:
flask.abort(400)
@yt_app.route('/edit_playlist', methods=['POST'])
def edit_playlist():
'''Called when adding videos to a playlist from elsewhere'''
if request.values['action'] == 'add':
add_to_playlist(request.values['playlist_name'], request.values.getlist('video_info_list'))
return '', 204
else:
flask.abort(400)
@yt_app.route('/data/playlist_thumbnails/<playlist_name>/<thumbnail>')
def serve_thumbnail(playlist_name, thumbnail):
# .. is necessary because flask always uses the application directory at ./youtube, not the working directory
return flask.send_from_directory(os.path.join('..', thumbnails_directory, playlist_name), thumbnail)
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