Sync currently-playing mpd track to Slack

track2slack.sh

#!/bin/bash
# Sync currently-playing mpd track to Slack
# Requires mpc, jq, curl

# Contains SLACK_TOKEN
source ~/.zshrc_secrets

prev_playing=''

while true; do
    if ! mpc > /dev/null; then
        # wait for something mpd-compatible to be available
        sleep 30s
    else
        now_playing=$(mpc current -f "[%artist% - ][%album% - ][%title%|%file%]")
        payload=$(jq -n '{status_emoji: ":notes:", status_text: $np}' --arg np "${now_playing}")

        # mpc unblocks for play/pause events
        # be nice to Slack and don't POST unless the track actually changed
        if [ "${now_playing}" != "${prev_playing}" ]; then
            prev_playing="${now_playing}"
            echo "${now_playing}"

            curl -s -X POST 'https://slack.com/api/users.profile.set' \
                --data-urlencode "token=${SLACK_TOKEN}" \
                --data-urlencode "profile=${payload}" \
                > /dev/null
        fi

        # wait until track change
        mpc idle > /dev/null
    fi
done