play_genre_artist.py

import argparse
import configparser
from os import path
import signal
import sys
from roonapi import RoonApi

def signal_handler(sig, frame):
    sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)

config = configparser.ConfigParser()
config.read('/usr/local/Roon/etc/roon_api.ini')

# Set to IP address of your Roon Core
server = config['DEFAULT']['RoonCoreIP']
# Set to Port of your Roon Core
port = config['DEFAULT']['RoonCorePort']
# Name of the file that holds a Roon API token
tokenfile = config['DEFAULT']['TokenFileName']

parser = argparse.ArgumentParser()
parser.add_argument("-a", "--artist", help="artist search term")
parser.add_argument("-g", "--genre", help="genre search term")
parser.add_argument("-X", "--exartist", help="artist exclude search term")
parser.add_argument("-x", "--exgenre", help="genre exclude search term")
parser.add_argument("-z", "--zone", help="zone selection")
args = parser.parse_args()

if args.artist:
    artistsearch = args.artist
else:
    artistsearch = config['DEFAULT']['DefaultArtist']
if args.genre:
    genresearch = args.genre
else:
    genresearch = config['DEFAULT']['DefaultGenre']
if args.exartist:
    exartistsearch = args.exartist
else:
    exartistsearch = None
if args.exgenre:
    exgenresearch = args.exgenre
else:
    exgenresearch = None
if args.zone:
    target_zone = args.zone
else:
    target_zone = config['DEFAULT']['DefaultZone']

version = config['DEFAULT']['RoonCommandLineVersion']
release = config['DEFAULT']['RoonCommandLineRelease']
fullver = version + "-" + release

appinfo = {
    "extension_id": "roon_command_line",
    "display_name": "Python library for Roon",
    "display_version": fullver,
    "publisher": "RoonCommandLine",
    "email": "roon@ronrecord.com",
    "website": "https://github.com/doctorfree/RoonCommandLine",
}

# Can be None if you don't yet have a token
if path.exists(tokenfile):
    token = open(tokenfile).read()
else:
    token = "None"

roonapi = RoonApi(appinfo, token, server, port)

# save the token for next time
with open(tokenfile, "w") as f:
    f.write(str(roonapi.token))

# get target zone output_id
outputs = roonapi.outputs

output_id = None
for (k, v) in outputs.items():
    if target_zone in v["display_name"]:
        output_id = k

if output_id is None:
    err = "No zone found matching " + target_zone
    sys.exit(err)
else:
    # List matching genres
    genres = roonapi.list_media(output_id, ["Genres", genresearch])
    if genres:
        artist = None
        for genre in genres:
            if exgenresearch is not None:
                if exgenresearch in genre:
                    continue
            # List matching artists
            artists = roonapi.list_media(output_id,
                                         ["Genres", genre,
                                          "Artists", artistsearch])
            if exartistsearch is not None and artists:
                artists = [chk for chk in artists if exartistsearch not in chk]
                if artists:
                    artist = artists[0]
                    print("Playing artist name", artist, "in", genre, "genre")
                    roonapi.play_media(output_id,
                                       ["Genres", genre,
                                        "Artists", artist], None, False)
                    if len(artists) > 1:
                        print("\nArtist names in", genre,
                              "genre matching", artistsearch, ":\n")
                        print(*artists, sep="\n")
                        print("\nTo play another artist in this genre by name either specify")
                        print("the full name or enough of a substring to provide a single match\n")
                    break
        if artist is None:
            print("No artists found matching", artistsearch)
    else:
        print("No genres found matching ", genresearch)