#!/bin/bash
# "Sleepmode" 2008 Markus Schmidt
#
# Sleepmode shuts down Backlight, generates a randomized Playlist from a specified folder,
# sets up Volumes and shuts down the computer after a desired duration
#
# needs /usr/bin/randomize with uncommented content below:
#
##!/bin/bash
# author:
#     Phil Jackson (phil@shellarchive.co.uk)

## prepend RANDOM, sort then cut the random number
#function do_randomisation {
#    while read line; do
#	first=`echo $line | cut -c 1`
#	if test "$first" != "#" ; then
#		echo "$RANDOM $line"
#	fi;
#    done | sort -n | cut -d ' ' -f '2-'
#}
#
## process stdin over files
#if [ -t 0 ]; then
#    if [ ${#} -lt 1 ]; then
#        echo "Please supply some input/filenames" >&2
#        exit 1
#    fi
#    cat "${@}" | do_randomisation
#else
#    do_randomisation
#fi



# CONFIG
# absolute path to mp3-folder or empty for playlist-mode (no trailing slash)
MP3_DIRECTORY="/media/space/Musik/Drop Zone"

# absolute path to mp3-playlist or empty for folder-mode
MP3_PLAYLIST=""

# path to generated Playlist (writeable for the user)
MP3_WORKLIST="/media/space/Musik/Drop Zone/sleepmode.m3u"

# time until shutdown in minutes
DURATION=60

# time per zenity (alternative)
#DURATION=`zenity --list --title="Sleepmode" --text="Wie lange soll der Sleepmode dauern?" --radiolist --column="" --column Punkt --column Beschreibung \"\" 30			"Eine halbe Stunde Laufzeit" \"\" 45			"45 Minuten Laufzeit" \"\" 60			"Eine Stunde Laufzeit"`

# random-play on or off
RANDOM=TRUE # TRUE or FALSE

# volume in ALSA
ALSA_VOL="80%"

# volume for VLC
VLC_VOL=8

# END OF CONFIG ############################################################################################

# kill processes
sudo killall -9 shutdown
sudo killall -9 vlc

# mixer-setup
amixer -c 0 set PCM $ALSA_VOL &

# generate playlist from folder
if test "$MP3_PLAYLIST" = "" -a "$MP3_DIRECTORY" != "" ; then
	if test $RANDOM ; then
		find "$MP3_DIRECTORY" -name *.mp3 | /usr/bin/randomize > "$MP3_WORKLIST"
		VLC_RAND="--random"
	else
		find "$MP3_DIRECTORY" -name *.mp3 > "$MP3_WORKLIST"
		VLC_RAND=""
	fi
fi

#generate random playlist from playlist
if test "$MP3_PLAYLIST" != "" -a $RANDOM ; then
	cat "$MP3_PLAYLIST" | /usr/bin/randomize > "$MP3_WORKLIST"
elif test "$MP3_PLAYLIST" != "" ; then
	cat "$MP3_PLAYLIST" > "$MP3_WORKLIST"
fi

# VLC starten
vlc --loop $VLC_RAND --volume 8 "$MP3_WORKLIST" &

# Monitor aus
xset dpms force off

# Rechner runter in 60 Minuten
sudo shutdown -h +60