def create_channel_and_get_first_video(artist_name):
"""
Constructs a new channel from a given seed artist, and returns first video
that should be displayed
"""
# Take care of the channel stuff
channel = create_channel(artist_name)
playlist_info = echonest.start_dynamic_playlist(artist_name)
channel.echonest_session_id = playlist_info['session_id']
channel.save()
rval = {}
rval['channel'] = channel
# Get the video!
videos = youtube.find_music_videos(playlist_info['artist_name'], playlist_info['song_title'], 1)
if videos is None:
for _ in xrange(MAX_FIRST_VIDEO_RETRY_SEARCH_ATTEMPT):
song_info = echonest.get_next_song_dynamic_playlist(channel.echonest_session_id, channel.seed_artist)
videos = youtube.find_music_videos(song_info['artist_name'], song_info['song_title'], 1)
if videos is not None:
# We're done here, move along...
break
time.sleep(RETRY_WAIT_TIME)
if videos != None:
rval['video_info'] = videos[0]
rval['artist'] = playlist_info['artist_name']
rval['song'] = playlist_info['song_title']
return rval
def search_and_create_video(artist_name, song_name, channel_hash):
"""
Searches YouTube for a video for a given artist and song title, and then
saves a corresponding music video object in the persistence layer. Video
object is then returned
"""
# Look for a music video on youtube
videos = youtube.find_music_videos(artist_name, song_name, 1)
if videos != None:
# Save video to DB
video_info = videos[0]
video = create_video(artist_name, song_name, video_info['source_url'], video_info['thumbnail_url'], channel_hash)
return video
return None