# {{ ansible_managed }}

#!/bin/bash

set -eu
set -o pipefail


trap 'mqtt-simple -h {{ mqtt_internal_host }} -p '{{ music_mqtt_mpd_volume }}' -m "" -r' EXIT

prev_volume=x

(echo mixer; mpc idleloop) | while read event; do
    if [ $event = "mixer" ]; then
        volume=`mpc volume | sed -nr 's/^volume: ([0-9]+)%$/\1/p'`
        if [ "$prev_volume" != "$volume" ]; then
            mqtt-simple -h {{ mqtt_internal_host }} -p '{{ music_mqtt_mpd_volume }} -r' -m "$volume"
        fi
        prev_volume=$volume
    fi
done