1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
from youtube import util, yt_data_extract, html_common, channel
import settings
from string import Template
import sqlite3
import os
import secrets
import datetime
import itertools
import time
import urllib
import socks, sockshandler
with open('yt_subscriptions_template.html', 'r', encoding='utf-8') as f:
subscriptions_template = Template(f.read())
# https://stackabuse.com/a-sqlite-tutorial-with-python/
database_path = os.path.join(settings.data_dir, "subscriptions.sqlite")
def open_database():
if not os.path.exists(settings.data_dir):
os.makedirs(settings.data_dir)
connection = sqlite3.connect(database_path)
# Create tables if they don't exist
try:
cursor = connection.cursor()
cursor.execute('''CREATE TABLE IF NOT EXISTS subscribed_channels (
id integer PRIMARY KEY,
channel_id text NOT NULL,
channel_name text NOT NULL,
time_last_checked integer
)''')
cursor.execute('''CREATE TABLE IF NOT EXISTS videos (
id integer PRIMARY KEY,
uploader_id integer NOT NULL REFERENCES subscribed_channels(id) ON UPDATE CASCADE ON DELETE CASCADE,
video_id text NOT NULL,
title text NOT NULL,
duration text,
time_published integer NOT NULL,
description text
)''')
connection.commit()
except:
connection.rollback()
connection.close()
raise
return connection
def _subscribe(channels):
''' channels is a list of (channel_id, channel_name) '''
# set time_last_checked to 0 on all channels being subscribed to
channels = ( (channel_id, channel_name, 0) for channel_id, channel_name in channels)
connection = open_database()
try:
cursor = connection.cursor()
cursor.executemany("INSERT INTO subscribed_channels (channel_id, channel_name, time_last_checked) VALUES (?, ?, ?)", channels)
connection.commit()
except:
connection.rollback()
raise
finally:
connection.close()
def _unsubscribe(channel_ids):
''' channel_ids is a list of channel_ids '''
connection = open_database()
try:
cursor = connection.cursor()
cursor.executemany("DELETE FROM subscribed_channels WHERE channel_id=?", ((channel_id, ) for channel_id in channel_ids))
connection.commit()
except:
connection.rollback()
raise
finally:
connection.close()
def _get_videos(number, offset):
connection = open_database()
try:
cursor = connection.cursor()
db_videos = cursor.execute('''SELECT video_id, title, duration, channel_name
FROM videos
INNER JOIN subscribed_channels on videos.uploader_id = subscribed_channels.id
ORDER BY time_published DESC
LIMIT ? OFFSET ?''', (number, offset))
for db_video in db_videos:
yield {
'id': db_video[0],
'title': db_video[1],
'duration': db_video[2],
'author': db_video[3],
}
except:
connection.rollback()
raise
finally:
connection.close()
units = {
'year': 31536000, # 365*24*3600
'month': 2592000, # 30*24*3600
'week': 604800, # 7*24*3600
'day': 86400, # 24*3600
'hour': 3600,
'minute': 60,
'second': 1,
}
def youtube_timestamp_to_posix(dumb_timestamp):
''' Given a dumbed down timestamp such as 1 year ago, 3 hours ago,
approximates the unix time (seconds since 1/1/1970) '''
dumb_timestamp = dumb_timestamp.lower()
now = time.time()
if dumb_timestamp == "just now":
return now
split = dumb_timestamp.split(' ')
number, unit = int(split[0]), split[1]
if number > 1:
unit = unit[:-1] # remove s from end
return now - number*units[unit]
def _get_upstream_videos(channel_id):
videos = []
json_channel_videos = channel.get_grid_items(channel.get_channel_tab(channel_id)[1]['response'])
for i, json_video in enumerate(json_channel_videos):
info = yt_data_extract.renderer_info(json_video['gridVideoRenderer'])
if 'description' not in info:
info['description'] = ''
info['time_published'] = youtube_timestamp_to_posix(info['published']) - i # subtract a few seconds off the videos so they will be in the right order
videos.append(info)
return videos
def get_subscriptions_page(env, start_response):
items_html = '''<nav class="item-grid">\n'''
for item in _get_videos(30, 0):
items_html += html_common.video_item_html(item, html_common.small_video_item_template)
items_html += '''\n</nav>'''
start_response('200 OK', [('Content-type','text/html'),])
return subscriptions_template.substitute(
header = html_common.get_header(),
items = items_html,
page_buttons = '',
).encode('utf-8')
def post_subscriptions_page(env, start_response):
params = env['parameters']
action = params['action'][0]
if action == 'subscribe':
if len(params['channel_id']) != len(params['channel_name']):
start_response('400 Bad Request', ())
return b'400 Bad Request, length of channel_id != length of channel_name'
_subscribe(zip(params['channel_id'], params['channel_name']))
elif action == 'unsubscribe':
_unsubscribe(params['channel_id'])
elif action == 'refresh':
connection = open_database()
try:
cursor = connection.cursor()
for uploader_id, channel_id in cursor.execute('''SELECT id, channel_id FROM subscribed_channels'''):
db_videos = ( (uploader_id, info['id'], info['title'], info['duration'], info['time_published'], info['description']) for info in _get_upstream_videos(channel_id) )
cursor.executemany('''INSERT INTO videos (uploader_id, video_id, title, duration, time_published, description) VALUES (?, ?, ?, ?, ?, ?)''', db_videos)
cursor.execute('''UPDATE subscribed_channels SET time_last_checked = ?''', ( int(time.time()), ) )
connection.commit()
except:
connection.rollback()
raise
finally:
connection.close()
start_response('303 See Other', [('Location', util.URL_ORIGIN + '/subscriptions'),] )
return b''
else:
start_response('400 Bad Request', ())
return b'400 Bad Request'
start_response('204 No Content', ())
return b''
|
