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| from PIL import Image | |
| from utils import * | |
| from app_utils import * | |
| import time | |
| debug = False | |
| dir_path = os.path.dirname(os.path.realpath(__file__)) | |
| # os.environ['FLASK_APP'] = dir_path + 'app2.py' | |
| # if debug: os.environ['FLASK_ENV'] = 'development' | |
| # | |
| # | |
| # app = Flask(__name__) | |
| # app.config['SECRET_KEY'] = os.urandom(64) | |
| # app.config['SESSION_TYPE'] = 'filesystem' | |
| # app.config['SESSION_FILE_DIR'] = './.flask_session/' | |
| # Session(app) | |
| st.set_page_config( | |
| page_title="EmotionPlaylist", | |
| page_icon="🎧", | |
| ) | |
| st.title('Customize Emotional Playlists') | |
| def log_to_spotify(): | |
| st.subheader("Step 1: Connect to your Spotify app") | |
| st.markdown("Log into your Spotify account to let the app create the custom playlist.") | |
| if 'login' not in st.session_state: | |
| sp, user_id = new_get_client(session=st.session_state) | |
| if sp != None: | |
| legit_genres = sp.recommendation_genre_seeds()['genres'] | |
| st.session_state['login'] = (sp, user_id, legit_genres) | |
| def get_user_playlists(users_links): | |
| global sp | |
| # Scanning users | |
| n_playlists = 0 | |
| all_uris, all_names = [], [] | |
| if users_links != "": | |
| try: | |
| all_uris, all_names = get_all_playlists_uris_from_users(users_links.split('\n')) | |
| n_playlists = len(all_uris) | |
| except: | |
| st.warning('Please enter a valid list of user names (one url per line)') | |
| return all_uris, all_names, n_playlists | |
| def get_filtered_user_playlists(user_links): | |
| global sp | |
| st.spinner(text="Scanning users..") | |
| all_uris, all_names, n_playlists = get_user_playlists(user_links) | |
| if n_playlists <= 1: | |
| st.success(f'Currently {len(all_uris)} user playlists taken into account.') | |
| return all_uris | |
| else: | |
| # let the user uncheck playlists | |
| st.markdown("Check boxes to select playlists from the selected users." | |
| "Note: to check all, first uncheck all (bug).") | |
| columns = st.columns(np.ones(5)) | |
| with columns[1]: | |
| check_all_playlists = st.button('Check all') | |
| with columns[3]: | |
| uncheck_all_playlists = st.button('Uncheck all') | |
| if 'checkboxes' not in st.session_state.keys(): | |
| st.session_state['checkboxes_playlists'] = [True] * n_playlists | |
| empty_checkboxes = wall_of_checkboxes(all_names, max_width=5) | |
| if check_all_playlists: | |
| st.session_state['checkboxes_playlists'] = [True] * n_playlists | |
| if uncheck_all_playlists: | |
| st.session_state['checkboxes_playlists'] = [False] * n_playlists | |
| for i_emc, emc in enumerate(empty_checkboxes): | |
| st.session_state['checkboxes_playlists'][i_emc] = emc.checkbox(all_names[i_emc], value=st.session_state['checkboxes_playlists'][i_emc]) | |
| filter_playlist = st.button('Update user playlists') | |
| if filter_playlist: | |
| return list(np.array(all_uris)[np.where(st.session_state['checkboxes_playlists'])]) | |
| else: | |
| return [] | |
| def get_non_user_playlists(playlist_links): | |
| # Scanning playlists | |
| new_playlist_uris = [] | |
| if playlist_links != "": | |
| st.spinner(text="Scanning playlists..") | |
| try: | |
| new_playlist_uris = extract_uris_from_links(playlist_links, url_type='playlist') | |
| except: | |
| st.warning('Please enter a valid list of playlists (one url per line)') | |
| return new_playlist_uris | |
| def extract_tracks(playlist_uris): | |
| global sp | |
| # extracting tracks | |
| data_tracks = get_all_tracks_from_playlists(sp, playlist_uris, verbose=True) | |
| return data_tracks | |
| def extract_audio_features(data_tracks, legit_genres): | |
| # Extract audio features | |
| all_tracks_uris = np.array(list(data_tracks.keys())) | |
| all_audio_features = [data_tracks[uri]['track']['audio_features'] for uri in all_tracks_uris] | |
| all_tracks_audio_features = dict(zip(relevant_audio_features, [[audio_f[k] for audio_f in all_audio_features] for k in relevant_audio_features])) | |
| genres = dict() | |
| for index, uri in enumerate(all_tracks_uris): | |
| track = data_tracks[uri] | |
| track_genres = track['track']['genres'] | |
| for g in track_genres: | |
| if g not in genres.keys(): | |
| genres[g] = [index] | |
| else: | |
| genres[g].append(index) | |
| genres = aggregate_genres(genres, legit_genres) | |
| genres_labels = sorted(genres.keys()) | |
| return all_tracks_uris, all_tracks_audio_features, genres, genres_labels | |
| # st.session_state['music_extracted'] = dict(all_tracks_uris=all_tracks_uris, | |
| # all_tracks_audio_features=all_tracks_audio_features, | |
| # genres=genres, | |
| # genres_labels=genres_labels) | |
| def select_songs(legit_genres): | |
| global sp | |
| st.subheader("Step 2: Select candidate songs") | |
| st.markdown("This can be done in two ways: \n" | |
| "1. Get songs from a list of users (and their playlists)\n" | |
| "2. Get songs from a list of playlists.\n" | |
| "For this you'll need to collect user names (e.g. 'bkayf') and/or playlist urls (e.g. " | |
| "https://open.spotify.com/playlist/1H7a4q8JZArMQiidRy6qon) by clicking on 'Share' and copying the url. " | |
| "You need to provide at least one source of music.") | |
| users_playlists = "Add a list of user names, one per line (optional)" | |
| users_links = st.text_area(users_playlists, value="") | |
| label_playlists = "Add a list of playlists urls, one per line (optional)" | |
| playlist_links = st.text_area(label_playlists, value="https://open.spotify.com/playlist/1H7a4q8JZArMQiidRy6qon") | |
| extract_button = centered_button(st.button, 'Extract music', n_columns=5) | |
| all_tracks_uris, all_tracks_audio_features, genres, genres_labels = [None] * 4 | |
| if extract_button or debug or 'extract_button' in st.session_state.keys(): | |
| st.session_state['extract_button'] = True | |
| # check the user input music sources | |
| if playlist_links == "" and users_links == "": | |
| st.warning('Please enter at least one source of music.') | |
| else: | |
| st.spinner(text="Scanning music sources..") | |
| playlist_uris = [] | |
| init_time = time.time() | |
| init_time_tot = init_time | |
| user_playlists = get_filtered_user_playlists(users_links) | |
| playlist_uris += user_playlists | |
| print(f'1. user playlist: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| new_playlist_uris = get_non_user_playlists(playlist_links) | |
| playlist_uris += new_playlist_uris | |
| st.success(f'{len(new_playlist_uris)} new playlists added from {len(user_playlists)} users.') | |
| print(f'2. non user playlist: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| if str(playlist_uris) in st.session_state.keys(): | |
| data_tracks = st.session_state[str(playlist_uris)] | |
| else: | |
| data_tracks = extract_tracks(playlist_uris) | |
| st.session_state[str(playlist_uris)] = data_tracks | |
| print(f'3. track extraction: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| all_tracks_uris, all_tracks_audio_features, genres, genres_labels = extract_audio_features(data_tracks, legit_genres) | |
| print(f'4. audio feature extraction: {time.time() - init_time:.2f}') | |
| print(f'\t total extraction: {time.time() - init_time_tot:.2f}') | |
| st.success(f'{len(data_tracks.keys())} tracks found!') | |
| return all_tracks_uris, all_tracks_audio_features, genres, genres_labels | |
| def customize_widgets(genres_labels): | |
| st.subheader("Step 3: Customize it!") | |
| st.markdown("##### Which genres?") | |
| st.markdown("Check boxes to select genres, see how many tracks were selected below. Note: to check all, first uncheck all (bug).") | |
| columns = st.columns(np.ones(5)) | |
| with columns[1]: | |
| check_all = st.button('Check all') | |
| with columns[3]: | |
| uncheck_all = st.button('Uncheck all') | |
| if 'checkboxes' not in st.session_state.keys(): | |
| st.session_state['checkboxes'] = [True] * len(genres_labels) | |
| empty_checkboxes = wall_of_checkboxes(genres_labels, max_width=5) | |
| if check_all: | |
| st.session_state['checkboxes'] = [True] * len(genres_labels) | |
| if uncheck_all: | |
| st.session_state['checkboxes'] = [False] * len(genres_labels) | |
| for i_emc, emc in enumerate(empty_checkboxes): | |
| st.session_state['checkboxes'][i_emc] = emc.checkbox(genres_labels[i_emc], value=st.session_state['checkboxes'][i_emc]) | |
| st.markdown("##### What's the mood?") | |
| valence = st.slider('Valence (0 negative, 100 positive)', min_value=0, max_value=100, value=100, step=1) / 100 | |
| energy = st.slider('Energy (0 low, 100 high)', min_value=0, max_value=100, value=100, step=1) / 100 | |
| danceability = st.slider('Danceability (0 low, 100 high)', min_value=0, max_value=100, value=100, step=1) / 100 | |
| target_mood = np.array([valence, energy, danceability]).reshape(1, 3) | |
| return target_mood | |
| def filter_songs_by_genre(checkboxes, genres_labels, genres): | |
| # filter songs by genres | |
| selected_labels = [genres_labels[i] for i in range(len(genres_labels)) if checkboxes[i]] | |
| genre_selected_indexes = [] | |
| for label in selected_labels: | |
| genre_selected_indexes += genres[label] | |
| genre_selected_indexes = np.array(sorted(set(genre_selected_indexes))) | |
| return genre_selected_indexes | |
| def find_best_songs_for_mood(all_tracks_audio_features, genre_selected_indexes, target_mood): | |
| candidate_moods = np.array([np.array(all_tracks_audio_features[feature])[genre_selected_indexes] for feature in ['valence', 'energy', 'danceability']]).T | |
| distances = np.sqrt(((candidate_moods - target_mood) ** 2).sum(axis=1)) | |
| min_dist_indexes = np.argsort(distances) | |
| n_candidates = distances.shape[0] | |
| return min_dist_indexes, n_candidates | |
| def run_app(): | |
| setup_credentials() | |
| image = Image.open(dir_path + '/image.png') | |
| st.image(image) | |
| st.markdown("This app let's you quickly build playlists in a customized way: ") | |
| st.markdown("* **It's easy**: you won't have to add songs one by one,\n" | |
| "* **You're in control**: you provide a source of candidate songs, select a list of genres and choose the mood for the playlist.") | |
| fake = centered_button(st.button, "Let's go", n_columns=7, disabled=True) | |
| log_to_spotify() | |
| if 'login' in st.session_state or debug: | |
| global sp | |
| if not debug: sp, user_id, legit_genres = st.session_state['login'] | |
| st.success('You are logged in.') | |
| all_tracks_uris, all_tracks_audio_features, genres, genres_labels = select_songs(legit_genres) | |
| if all_tracks_uris is not None: | |
| target_mood = customize_widgets(genres_labels) | |
| custom_button = centered_button(st.button, 'Run customization', n_columns=5) | |
| if custom_button or 'run_custom' in st.session_state.keys(): | |
| st.session_state['run_custom'] = True | |
| checkboxes = st.session_state['checkboxes'].copy() | |
| init_time = time.time() | |
| genre_selected_indexes = filter_songs_by_genre(checkboxes, genres_labels, genres) | |
| if len(genre_selected_indexes) < 10: | |
| genre_selected_indexes = None | |
| st.warning('Please select more genres or add more music sources.') | |
| else: | |
| st.success(f'{len(genre_selected_indexes)} candidate tracks selected.') | |
| print(f'6. filter by genre: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| if genre_selected_indexes is not None: | |
| min_dist_indexes, n_candidates = find_best_songs_for_mood(all_tracks_audio_features, genre_selected_indexes, target_mood) | |
| print(f'7. filter by mood: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| if n_candidates < 25: | |
| st.warning('Please add more music sources or select more genres.') | |
| else: | |
| playlist_length = st.number_input(f'Pick a playlist length, given {n_candidates} candidates.', min_value=5, | |
| value=min(10, n_candidates//5), max_value=n_candidates//5) | |
| selected_tracks_indexes = genre_selected_indexes[min_dist_indexes[:playlist_length]] | |
| selected_tracks_uris = all_tracks_uris[selected_tracks_indexes] | |
| np.random.shuffle(selected_tracks_uris) | |
| playlist_name = st.text_input('Playlist name', value='Mood Playlist') | |
| if playlist_name == '': | |
| st.warning('Please enter a playlist name.') | |
| else: | |
| print(f'8. build playlist: {time.time() - init_time:.2f}') | |
| init_time = time.time() | |
| generation_button = centered_button(st.button, 'Generate playlist', n_columns=5) | |
| if generation_button: | |
| description = f'Emotion Playlist for Valence: {target_mood[0]}, ' \ | |
| f'Energy: {target_mood[1]}, ' \ | |
| f'Danceability: {target_mood[2]}). ' \ | |
| f'Playlist generated by the EmotionPlaylist app: https://huggingface.co/spaces/ccolas/EmotionPlaylist.' | |
| playlist_info = sp.user_playlist_create(user_id, playlist_name, public=True, collaborative=False, description=description) | |
| playlist_uri = playlist_info['uri'].split(':')[-1] | |
| sp.playlist_add_items(playlist_uri, selected_tracks_uris) | |
| st.write( | |
| f""" | |
| <html> | |
| <body> | |
| <center> | |
| <iframe style = "border-radius:12px" src="https://open.spotify.com/embed/playlist/{playlist_uri}" allowtransparency="true" | |
| allow="encrypted-media" width="80%" height="580" frameborder="0"></iframe></center></body></html> | |
| """, unsafe_allow_html=True) | |
| st.success(f'The playlist has been generated, find it [here](https://open.spotify.com/playlist/{playlist_uri}).') | |
| stop = 1 | |
| if __name__ == '__main__': | |
| run_app() |