A simple Slack bot that listens for song recommendations in a Slack channel and automatically adds them to a Spotify playlist!

• Listens for messages in a specified Slack channel.
• Extracts song name and artist from messages formatted as song name - artist from the first line of the message.
• Adds the song to a predefined Spotify playlist.
• Reacts with emojis to indicate processing status.

• Python 3.7+
• A Slack workspace with a bot token.
• A Spotify Developer account with API credentials.

1. Clone the repository:

   git clone https://github.com/javierferrersb/slack-spotify-playlist-bot.git
   cd slack-spotify-playlist-bot

2. Create and activate a virtual environment:

   python3 -m venv .venv

   • On Linux/macOS:

     source .venv/bin/activate

   • On Windows:

     .venv\Scripts\activate

3. Install dependencies:

   pip install -r requirements.txt

4. Create a .env file with your credentials:

   SLACK_BOT_TOKEN=your-slack-bot-token
   SLACK_SIGNING_SECRET=your-slack-signing-secret
   SPOTIPY_CLIENT_ID=your-spotify-client-id
   SPOTIPY_CLIENT_SECRET=your-spotify-client-secret
   SPOTIPY_REDIRECT_URI=http://127.0.0.1:8888/callback
   PLAYLIST_ID=your-spotify-playlist-id
   SPOTIFY_AUTH_CACHE=generated-json-token-cache

   Note: Do not use localhost for Spotify redirect URI. Use loopback IP such as http://127.0.0.1:8888/callback in both your Spotify app dashboard and .env.

5. Generate SPOTIFY_AUTH_CACHE:

   The bot reads Spotify token data from SPOTIFY_AUTH_CACHE. Use the helper script to generate it.

   python scripts/get_spotify_auth_cache.py

   The script will:

   • Open (or print) the Spotify authorization URL.
   • Ask you to paste the full redirect URL after approving access.
   • Print a ready-to-paste line in this format:

   SPOTIFY_AUTH_CACHE={"access_token":"...","token_type":"Bearer","expires_in":3600,"refresh_token":"...","scope":"playlist-modify-public playlist-modify-private","expires_at":1234567890}

   You can also write/update .env automatically:

   python scripts/get_spotify_auth_cache.py --write-env

Start the Flask server:

python app.py

The bot will listen for messages in the Slack channel and process song requests automatically.

1. A user posts a message in the format song name - artist.
2. The bot adds a ⏳ (loading) emoji to indicate processing.
3. It searches for the song on Spotify and adds it to the playlist.
4. If successful, the bot replaces ⏳ with ✅ (done) emoji.

Feel free to fork this project and submit pull requests with improvements!

This project is open-source and available under the MIT License.