import os, logging
import hashlib
import random
import string

import requests
DEBUG = os.environ.get('DEBUG')
logging.basicConfig(
        format='[%(asctime)s] %(levelname)s %(module)s/%(funcName)s - %(message)s',
        level=logging.DEBUG if DEBUG else logging.INFO)

def main():
    """Get playlists from a Navidrome server using the Subsonic API."""
    navidrome_url = os.environ.get('NAVIDROME_URL')
    username = os.environ.get('NAVIDROME_USER')
    password = os.environ.get('NAVIDROME_PASSWORD')

    if not all([navidrome_url, username, password]):
        logging.error("NAVIDROME_URL, NAVIDROME_USER, and NAVIDROME_PASSWORD environment variables must be set.")
        return

    # Subsonic API requires a salt and a token (md5(password + salt))
    salt = ''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(10))
    token = hashlib.md5((password + salt).encode('utf-8')).hexdigest()

    params = {
        'u': username,
        't': token,
        's': salt,
        'v': '1.16.1',
        'c': 'playlist-script',
        'f': 'json'
    }

    api_url = f"{navidrome_url.rstrip('/')}/rest/getPlaylists.view"

    try:
        response = requests.get(api_url, params=params)
        response.raise_for_status()  # Raise an exception for bad status codes
    except requests.exceptions.RequestException as e:
        logging.error(f"Error connecting to Navidrome: {e}")
        return

    data = response.json()

    subsonic_response = data.get('subsonic-response')
    if not subsonic_response:
        logging.error("Invalid response format from server.")
        return

    if subsonic_response.get('status') == 'failed':
        error = subsonic_response.get('error', {})
        logging.error(f"API Error: {error.get('message')} (code: {error.get('code')})")
        return

    playlists = subsonic_response.get('playlists', {}).get('playlist', [])

    if not playlists:
        logging.info("No playlists found for user '%s'.", username)
        return

    print(f"Playlists for {username}:")
    for playlist in playlists:
        print(f"  - {playlist.get('name')} ({playlist.get('songCount')} songs)")


if __name__ == "__main__":
    main()