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YouTube: Support V3 API via user-supplied key (bug 1999)

This adds auto-discovery of the channel ID and new-style feed for old-style
(username-based) feed URLs when the V3 API key is available, and also adds an
extra menu item for migrating subscriptions.
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thp committed May 20, 2015
1 parent 6714384 commit fd1002060c7f328723048f371387db5904c5900f
@@ -233,6 +233,13 @@
</object>
<accelerator key="S" modifiers="GDK_CONTROL_MASK"/>
</child>
<child>
<object class="GtkAction" id="item_update_youtube_subscriptions">
<property name="name">item_update_youtube_subscriptions</property>
<property name="label" translatable="yes">Update YouTube subscriptions</property>
<signal handler="on_update_youtube_subscriptions_activate" name="activate"/>
</object>
</child>
<child>
<object class="GtkAction" id="menuView">
<property name="name">menuView</property>
@@ -367,6 +374,7 @@
</menu>
<menu action="menuExtras">
<menuitem action="item_sync"/>
<menuitem action="item_update_youtube_subscriptions"/>
</menu>
<menu action="menuView">
<menuitem action="itemShowToolbar"/>
@@ -52,7 +52,7 @@
<object class="GtkTable" id="table_players">
<property name="column_spacing">6</property>
<property name="n_columns">3</property>
<property name="n_rows">4</property>
<property name="n_rows">5</property>
<property name="row_spacing">6</property>
<property name="visible">True</property>
<child>
@@ -162,15 +162,62 @@
</packing>
</child>
<child>
<object class="GtkLabel" id="label_preferred_vimeo_format">
<object class="GtkLabel" id="label_youtube_api_key">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="xalign">0</property>
<property name="label" translatable="yes">Preferred Vimeo format:</property>
<property name="label" translatable="yes">YouTube API key (v3):</property>
</object>
<packing>
<property name="left_attach">0</property>
<property name="right_attach">1</property>
<property name="top_attach">3</property>
<property name="bottom_attach">4</property>
<property name="x_options">fill</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry_youtube_api_key">
<property name="visible">True</property>
<signal handler="on_youtube_api_key_changed" name="changed"/>
</object>
<packing>
<property name="left_attach">1</property>
<property name="right_attach">2</property>
<property name="top_attach">3</property>
<property name="bottom_attach">4</property>
<property name="x_options">fill</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button_youtube_api_key">
<property name="visible">True</property>
<signal name="clicked" handler="on_button_youtube_api_key_clicked"/>
<child>
<object class="GtkImage" id="image_youtube_api_key">
<property name="stock">gtk-jump-to</property>
<property name="visible">True</property>
</object>
</child>
</object>
<packing>
<property name="top_attach">3</property>
<property name="bottom_attach">4</property>
<property name="left_attach">2</property>
<property name="right_attach">3</property>
<property name="x_options">fill</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label_preferred_vimeo_format">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="xalign">0</property>
<property name="label" translatable="yes">Preferred Vimeo format:</property>
</object>
<packing>
<property name="top_attach">4</property>
<property name="bottom_attach">5</property>
<property name="x_options">fill</property>
</packing>
</child>
@@ -183,8 +230,8 @@
<packing>
<property name="left_attach">1</property>
<property name="right_attach">2</property>
<property name="top_attach">3</property>
<property name="bottom_attach">4</property>
<property name="top_attach">4</property>
<property name="bottom_attach">5</property>
</packing>
</child>
</object>
@@ -191,6 +191,7 @@
'youtube': {
'preferred_fmt_id': 18, # default fmt_id (see fallbacks in youtube.py)
'preferred_fmt_ids': [], # for advanced uses (custom fallback sequence)
'api_key_v3': '', # API key, register for one at https://developers.google.com/youtube/v3/
},

'vimeo': {
@@ -314,6 +314,7 @@ def new(self):
self.entry_username.set_text(self._config.mygpo.username)
self.entry_password.set_text(self._config.mygpo.password)
self.entry_caption.set_text(self._config.mygpo.device.caption)
self.entry_youtube_api_key.set_text(self._config.youtube.api_key_v3)

# Disable mygpo sync while the dialog is open
self._config.mygpo.enabled = False
@@ -596,6 +597,12 @@ def on_enabled_toggled(self, widget):
# Only update indirectly (see on_dialog_destroy)
self._enable_mygpo = widget.get_active()

def on_youtube_api_key_changed(self, widget):
self._config.youtube.api_key_v3 = widget.get_text()

def on_button_youtube_api_key_clicked(self, widget):
util.open_website('https://developers.google.com/youtube/v3/')

def on_username_changed(self, widget):
self._config.mygpo.username = widget.get_text()

@@ -2177,6 +2177,17 @@ def add_podcast_list(self, podcasts, auth_tokens=None):
queued, failed, existing, worked, authreq = [], [], [], [], []
for input_title, input_url in podcasts:
url = util.normalize_feed_url(input_url)

# Check if it's a YouTube feed, and if we have an API key, auto-resolve the channel
if url is not None and self.config.youtube.api_key_v3:
xurl, xuser = youtube.for_each_feed_pattern(lambda url, channel: (url, channel), url, (None, None))
if xurl is not None and xuser is not None:
logger.info('Getting channels for YouTube user %s (%s)', xuser, xurl)
new_urls = youtube.get_channels_for_user(xuser, self.config.youtube.api_key_v3)
logger.debug('YouTube channels retrieved: %r', new_urls)
if len(new_urls) == 1:
url = new_urls[0]

if url is None:
# Fail this one because the URL is not valid
failed.append(input_url)
@@ -3484,6 +3495,52 @@ def on_sync_to_device_activate(self, widget, episodes=None, force_played=True):

self.sync_ui.on_synchronize_episodes(self.channels, episodes, force_played)

def on_update_youtube_subscriptions_activate(self, widget):
if not self.config.youtube.api_key_v3:
if self.show_confirmation('\n'.join((_('Please register a YouTube API key and set it in the preferences.'),
_('Would you like to set up an API key now?'))), _('API key required')):
self.on_itemPreferences_activate(self, widget)
return

failed_urls = []
migrated_users = []
for podcast in self.channels:
url, user = youtube.for_each_feed_pattern(lambda url, channel: (url, channel), podcast.url, (None, None))
if url is not None and user is not None:
try:
logger.info('Getting channels for YouTube user %s (%s)', user, url)
new_urls = youtube.get_channels_for_user(user, self.config.youtube.api_key_v3)
logger.debug('YouTube channels retrieved: %r', new_urls)

if len(new_urls) != 1:
failed_urls.append(url, _('No unique URL found'))
continue

new_url = new_urls[0]
if new_url in set(x.url for x in self.model.get_podcasts()):
failed_urls.append((url, _('Already subscribed')))
continue

logger.info('New feed location: %s => %s', url, new_url)
podcast.url = new_url
podcast.save()
migrated_users.append(user)
except Exception as e:
logger.error('Exception happened while updating download list.', exc_info=True)
self.show_message(_('Make sure the API key is correct. Error: %(message)s') % {'message': str(e)},
_('Error getting YouTube channels'), important=True)

if migrated_users:
self.show_message('\n'.join(migrated_users), _('Successfully migrated subscriptions'))
elif not failed_urls:
self.show_message(_('Subscriptions are up to date'))

if failed_urls:
self.show_message('\n'.join([_('These URLs failed:'), ''] + ['{}: {}'.format(url, message)
for url, message in failed_urls]),
_('Could not migrate some subscriptions'), important=True)


def main(options=None):
gobject.threads_init()
gobject.set_application_name('gPodder')
@@ -78,6 +78,10 @@
]
formats_dict = dict(formats)

V3_API_ENDPOINT = 'https://www.googleapis.com/youtube/v3'
CHANNEL_VIDEOS_XML = 'https://www.youtube.com/feeds/videos.xml'


class YouTubeError(Exception): pass


@@ -188,6 +192,7 @@ def for_each_feed_pattern(func, url, fallback_result):
'http[s]?://(?:[a-z]+\.)?youtube\.com/channel/([_a-z0-9]+)',
'http[s]?://(?:[a-z]+\.)?youtube\.com/rss/user/([a-z0-9]+)/videos\.rss',
'http[s]?://gdata.youtube.com/feeds/users/([^/]+)/uploads',
'http[s]?://(?:[a-z]+\.)?youtube\.com/feeds/videos.xml?channel_id=([a-z0-9]+)',
]

for pattern in CHANNEL_MATCH_PATTERNS:
@@ -219,3 +224,8 @@ def return_user_cover(url, channel):
return None

return for_each_feed_pattern(return_user_cover, url, None)

def get_channels_for_user(username, api_key_v3):
stream = util.urlopen('{}/channels?forUsername={}&part=id&key={}'.format(V3_API_ENDPOINT, username, api_key_v3))
data = json.load(stream)
return ['{}?channel_id={}'.format(CHANNEL_VIDEOS_XML, item['id']) for item in data['items']]

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