Here is a script which uses “playlist save” and “playlist resume” (rather than trying to add the alert song to the end of the playlist and then removing it once it stops playing). I did some testing on this script and it seems to work pretty good. Let me know if you see any issues.
NOTE: This script takes an additional argument “playlist_name” as the first argument. You will want this to be a different value for each player, so you could just pass in the player name. It also takes an optional parameter to not restore the playlist (restore_playlist=0 only works if music was previously stopped… see comments in script below for details).
#!/bin/bash
#squeezebox_alert.sh
#NOTE: Edit "user", "pass", ip and port below
JSONRPC="http://user:[email protected]:9000/jsonrpc.js"
#Example command arguments
#playlist_name="bedroom"
#mac="00:04:20:01:02:03"
#alert_song="//volume1//homeassistant//mp3//beep.mp3"
#alert_volume=60
#NOTE: restore_playlist is optional.(defaults to 1)
# restore_playlist=0 only works if music was previously stopped
#restore_playlist=0
playlist_name=$1
mac=$2
alert_song=$3
alert_volume=$4
restore_playlist=${5:-1}
echo "restore_playlist=$restore_playlist"
#get power state
power=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["power","?"]]}' \
$JSONRPC | jq '.result._power')
prev_power=0
if [[ $power =~ .*1.* ]] ; then
prev_power=1
fi
echo "prev_power=$prev_power"
#get play mode
mode=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mode","?"]]}' \
$JSONRPC | jq '.result._mode')
prev_playmode=0
if [[ $mode =~ .*play.* ]] ; then
prev_playmode=1
fi
echo "prev_playmode=$prev_playmode"
noplay=1
prev_time=0
if [ $prev_playmode -eq 1 ] ; then
noplay=0
# pause currently playing song
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["pause"]]}' $JSONRPC
echo "pause currently playing song"
# get paused time
prev_time=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["time","?"]]}' \
$JSONRPC | jq '.result._time')
echo "prev_time=$prev_time"
fi
# save current playlist
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","save","'"$playlist_name"'","silent:1"]]}' $JSONRPC
echo "save current playlist"
# GET SETTINGS TO RESTORE AFTER PLAYING ALERT SONG
#get current volume
prev_volume=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mixer","volume","?"]]}' \
$JSONRPC | jq '.result._volume')
echo "prev_volume=$prev_volume"
#get current repeat setting
prev_repeat=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat","?"]]}' \
$JSONRPC | jq '.result._repeat')
echo "prev_repeat=$prev_repeat"
# SET SETTINGS FOR ALERT SONG
#set alert_volume to command argument value
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mixer","volume",'$alert_volume']]}' $JSONRPC
echo "set alert_volume"
#set repeat setting to 0
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat",0]]}' $JSONRPC
echo "set repeat_setting to 0"
#play alert song (this will clear current playlist)
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","play","'"$alert_song"'"]]}' $JSONRPC
echo "play alert song"
# WAIT FOR ALERT SONG TO STOP PLAYING
echo "wait for alert song to stop playing"
cur_mode="play"
while [[ $cur_mode =~ .*play.* ]]; do
sleep 1
cur_mode=$(curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mode","?"]]}' \
$JSONRPC | jq '.result._mode')
done
echo "alert song stopped playing"
# RESTORE PREVIOUS SETTINGS
#restore prev_volume setting
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mixer","volume",'"$prev_volume"']]}' $JSONRPC
echo "restore prev_volume setting"
#restore prev_repeat setting
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat",'"$prev_repeat"']]}' $JSONRPC
echo "restore prev_repeat setting"
# resume previous playlist (always resume if previously playing)
if [ $prev_playmode -eq 1 ] || [ $restore_playlist -eq 1 ] ; then
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","resume","'"$playlist_name"'","noplay:'$noplay'"]]}' $JSONRPC
echo "resume previous playlist"
fi
# RESUME PREVIOUSLY PLAYING MUSIC
if [ $prev_playmode -eq 1 ] ; then
#skip ahead in song to prev_time
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["time",'"$prev_time"']]}' $JSONRPC
echo "skip ahead in song to prev_time"
fi
#restore prev_power setting
if [ $prev_power -eq 0 ] ; then
echo "prev_power setting was off, power off"
curl -X GET -H "Content-Type: application/json" \
-d '{"id":1,"method":"slim.request","params":["'"$mac"'",["power",0]]}' $JSONRPC
fi
The ideal solution would probably be for the media player component to handle alerts (saving and resuming the current playlist)… but this will be very player dependent so it won’t be easy to implement.