def ajax_get_winner(request):
""""
Closes out current round, and gets next video to play (i.e. winner of votes)
and returns winning song data as JSON
"""
if request.is_ajax():
# Get arguments
channel_hash_code = request.GET.get('code')
try:
data = {}
# Pause voting while we update things
c = channel.retrieve(channel_hash_code)
c.is_accepting_votes = False
c.save()
# Get winner
winning_video = voting.get_winner(channel_hash_code)
data['video_url'] = winning_video.video_url
data['artist'] = winning_video.artist_name
data['song'] = winning_video.song_name
# Delete last round/Setup next round
cvr = voting.create_round(channel_hash_code)
# Update channel
c.is_accepting_votes = True
c.last_song_play_date = datetime.now()
c.current_round = cvr
c.save()
data['success'] = True
except:
data['success'] = False
# Render response
return HttpResponse(json.dumps(data), mimetype='application/json')
else:
# Should only be accessed in an ajax way, otherwise this request is
# whack and throwing that shit back
return HttpResponseRedirect("/")
def search_and_create_video_next_on_playlist(channel_hash):
"""
Searches for a video corresponding to next song on channel's playlist
from echonest, and then save to persistence layer. Video object is then returned
"""
video = None
# Get channel
c = channel.retrieve(channel_hash)
for _ in xrange(MAX_PLAYLIST_VIDEO_ATTEMPT):
# Get next song (potential next video) from playlist
song_info = None
for _ in xrange(MAX_SONG_INFO_RETRY):
song_info = echonest.get_next_song_dynamic_playlist(c.echonest_session_id, c.seed_artist)
if song_info is None:
# Something messed up with the echonest playlist, try restart
time.sleep(SONG_RETRY_TIME)
song_info = echonest.restart_dynamic_playlist(c.seed_artist)
if song_info is not None:
c.echonest_session_id = song_info['session_id']
c.save()
break
else:
# Found a song
break
# Find a video
video = search_and_create_video(song_info['artist_name'], song_info['song_title'], channel_hash)
if video is not None:
return video
else:
time.sleep(PLAYLIST_RETRY_TIME)
return None
