Pulls my 'now playing' track from Last.fm and posts it to Slack as my status with the 🎧 emoji.

np-to-slack.py

#!/usr/bin/env python
# coding: utf-8
#
# Nowplaying (via Last.fm) to Slack
# Author: Nathan V <[email protected]>
#
# Copyright 2017 Nathan V
# License: MIT; https://opensource.org/licenses/MIT
# This simple little script could be expanded to support command line
# args, multiple sources, and multiple Slack domains... but for now it
# gets the job done posting my current tunes so ¯\_(ツ)_/¯
#
# Works on Python 2.7.3+ and 3.3.0+
#
# Expects ~/.config/last-fm.yml with an API key and user name
# Expects ~/.config/slack.yml with a legacy key
#
# Deps: pip install requests retry pyyaml

from __future__ import print_function
import os
import time

import requests
from requests.exceptions import HTTPError, ConnectionError
from retry import retry
import yaml


class NPSlack:
    def __init__(self):
        self.lastfm_config = yaml.load(
            open(os.path.expanduser('~/.config/last-fm.yml')))
        self.lastfm_url_base = 'https://audioscrobbler.com/'
        self.lastfm_user = self.lastfm_config['user']
        self.lastfm_key = self.lastfm_config['key']

        self.slack_config = yaml.load(
            open(os.path.expanduser('~/.config/slack.yml')))
        self.slack_url_base = 'https://slack.com/api/'
        self.slack_key = self.slack_config['key']

    def update(self):
        print('Getting data from Last.fm...', end='')
        lfm = self.last_fm_playing()
        print("Got info: {}".format(lfm))
        if lfm is not None:
            print('Sending to Slack status...', end='')
            self.slack_status("Now playing: {}".format(lfm), ':headphones:')
        else:
            print('Nothing playing; blanking Slack...', end='')
            self.slack_status('', '')
        print('Done.')

    @retry((HTTPError, ConnectionError), delay=1, backoff=2, tries=4)
    def last_fm_playing(self):
        params = {'method':  'user.getrecenttracks',
                  'user':    self.lastfm_user,
                  'api_key': self.lastfm_key,
                  'format':  'json',
                  'limit':   1}
        req = requests.get(
            "{}2.0/".format(self.lastfm_url_base),
            params=params
            )
        lfm_data = req.json()['recenttracks']
        try:
            if lfm_data['track'][0]['@attr']['nowplaying'] == 'true':
                artist = lfm_data['track'][0]['artist']['#text']
                song = lfm_data['track'][0]['name']
                result = "{} - {}".format(artist, song)
            else:
                result = None
            return result
        except KeyError:
            return None

    @retry((HTTPError, ConnectionError), delay=1, backoff=2, tries=4)
    def slack_status(self, text, emoji):
        profile = '{{"status_text":"{}","status_emoji":"{}"}}'.format(
            text, emoji
            )
        params = {'token':   self.slack_key,
                  'profile': profile}
        requests.get(
            "{}users.profile.set".format(self.slack_url_base),
            params=params
            )


def main():
    np_slack = NPSlack()
    while True:
        try:
            np_slack.update()
            time.sleep(60)
        except (KeyboardInterrupt, SystemExit):
            exit()


if __name__ == "__main__":
    main()