Squeezebox Audio Alert Script

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Thanks a lot for the work! I updated script for shell usage (not HAss.IO component) form post 41 (I guess)…
I had two issues:

  • no “jq” - didnt want to install anything extra, so I updated the scripts using “sed”, which should be available without extra installation
  • I didnt see the need for the “playlist_name”, so I generated the name out of the MAC-address, which would need to be provided to make all work.

If somebody is interested, here we go:

#!/bin/bash

#squeezebox_alert_save_playlist.sh

#NOTE: Edit "user", "pass", ip and port below
#JSONRPC="http://user:[email protected]:9000/jsonrpc.js"
JSONRPC="http://192.168.20.201:9001/jsonrpc.js"

#Example command arguments
#mac="00:04:20:01:02:03"
#alert_volume=60

mac=$1
alert_volume=$2
playlist_name=$(echo "$1" | sed 's/\://g')

#get power state
power=$(curl -X POST -H "Content-Type: application/json" \
                  -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["power","?"]]}' \
                  $JSONRPC | sed -n 's/.*"_power"\:"\([^"]*\)".*/\1/p')

prev_power=0
if [[ $power =~ .*1.* ]] ; then
  prev_power=1 
fi
echo "prev_power=$prev_power"

#get play mode
mode=$(curl -X POST -H "Content-Type: application/json" \
                 -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mode","?"]]}' \
                 $JSONRPC | sed -n 's/.*"_mode"\:"\([^"]*\)".*/\1/p')

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 POST -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=$(curl -X POST -H "Content-Type: application/json" \
                   -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["time","?"]]}' \
                   $JSONRPC | sed -n 's/.*"_time"\:\([0-9\.]*\).*/\1/p')
  echo "prev_time=$prev_time"
fi

# save current playlist
curl -X POST -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=$(curl -X POST -H "Content-Type: application/json" \
                   -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mixer","volume","?"]]}' \
                   $JSONRPC | sed -n 's/.*"_volume"\:"\([^"]*\)".*/\1/p')
echo "prev_volume=$prev_volume"

#get current repeat setting
prev_repeat=$(curl -X POST -H "Content-Type: application/json" \
                   -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat","?"]]}' \
                   $JSONRPC | sed -n 's/.*"_repeat"\:"\([^"]*\)".*/\1/p')
echo "prev_repeat=$prev_repeat"

#write settings to file
DIRECTORY=$(cd `dirname $0` && pwd)
echo "Save settings to file: $DIRECTORY/$playlist_name.txt"
> "$DIRECTORY/$playlist_name.txt"
printf '%s\n%s\n%s\n%s\n%s\n' $prev_power $prev_playmode $prev_time $prev_volume $prev_repeat > "$DIRECTORY//$playlist_name.txt"

# SET SETTINGS FOR ALERT SONG
#set alert_volume to command argument value
curl -X POST -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 POST -H "Content-Type: application/json" \
     -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat",0]]}' $JSONRPC
echo "set repeat_setting to 0"

And the restore part:

#!/bin/bash

#squeezebox_alert_restore_playlist.sh

#NOTE: Edit "user", "pass", ip and port below
#JSONRPC="http://user:[email protected]:9000/jsonrpc.js"
JSONRPC="http://192.168.20.201:9001/jsonrpc.js"

#Example command arguments
#mac="00:04:20:01:02:03"

mac=$1
playlist_name=$(echo "$1" | sed 's/\://g')

# 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 | sed -n 's/.*"_mode"\:"\([^"]*\)".*/\1/p')
done

echo "alert song stopped playing"

# read settings from file
DIRECTORY=$(cd `dirname $0` && pwd)
echo "Restore settings from file: $DIRECTORY/$playlist_name.txt"
IFS=$'\n' read -d '' -r -a lines < "$DIRECTORY/$playlist_name.txt"
prev_power="${lines[0]}"
prev_playmode="${lines[1]}"
prev_time="${lines[2]}"
prev_volume="${lines[3]}"
prev_repeat="${lines[4]}"
echo "prev_power=$prev_power"
echo "prev_playmode=$prev_playmode"
echo "prev_time=$prev_time"
echo "prev_volume=$prev_volume"
echo "prev_repeat=$prev_repeat"

noplay=1
if [ $prev_playmode -eq 1 ] ; then
  noplay=0
fi

# RESTORE PREVIOUS SETTINGS
#restore prev_volume setting
if [ ! -z $prev_volume ] ; then
  curl -X POST -H "Content-Type: application/json" \
     -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["mixer","volume",'"$prev_volume"']]}' $JSONRPC
  echo "restore prev_volume setting"
fi

#restore prev_repeat setting
if [ ! -z $prev_repeat ] ; then
  curl -X POST -H "Content-Type: application/json" \
     -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","repeat",'"$prev_repeat"']]}' $JSONRPC
  echo "restore prev_repeat setting"
fi

# resume previous playlist
curl -X POST -H "Content-Type: application/json" \
     -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["playlist","resume","'"$playlist_name"'","noplay:'$noplay'"]]}' $JSONRPC
echo "resume previous playlist"

# RESUME PREVIOUSLY PLAYING MUSIC
if [ $prev_playmode -eq 1 ] ; then
  if [ ! -z $prev_time ] ; then
    #skip ahead in song to prev_time
    curl -X POST -H "Content-Type: application/json" \
       -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["time",'"$prev_time"']]}' $JSONRPC
    echo "skip ahead in song to prev_time"
  fi
fi

#restore prev_power setting
if [ $prev_power -eq 0 ] ; then
  echo "prev_power setting was off, power off"
  curl -X POST -H "Content-Type: application/json" \
       -d '{"id":1,"method":"slim.request","params":["'"$mac"'",["power",0]]}' $JSONRPC
fi
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