#!/bin/bash
file="/media/$USER/My_Data/Videos/video clips/random.m3u"
last="/media/$USER/WindowsDir/Users/$USER/GoogleDrive/linux/.lastNumber"
DIR0="/media/mosaid/My_Data/Videos/video clips/videos 001/"
N=$( cat "$file" | wc -l )
function play (){
    n=$1
    if (( $n > $N )) ; then n=1; fi
    #for i in 20 89 196 223 281 311 411 423
    #   do
    #       if(($i==$n))
    #           then
    #               let "n += 1"
    #       fi
    #done
    fileToPlay=$( cat "$file" | sed -n "$n"p )
    echo "$n" > "$last"
    pid=$(pidof xplayer) # $( pgrep xplayer )
    nohup xplayer "$fileToPlay" </dev/null >/dev/null 2>&1 &
    sleep 1
    if (( ${#pid}==0 ))
        then
            xplayer --toggle-controls
    fi
}

function printhelp () {
    string1=$1
    string2=$2
    pad=$( printf '%0.1s' " "{1..60} )
    padlength=25
    printf '\t%s' "$string1"
    printf '%*.*s' 0 $(( padlength - ${#string1}  )) "$pad"
    printf  "$string2"
    printf '\n'
}

case "$1" in
        "" )
            number=$(cat "$last" )
            let "number += 1"
            if (($number > $N))
                then
                    number="1"
            fi
            echo "$number"
            play $number
        ;;
        "all" )
          nohup xplayer "$file" </dev/null >/dev/null 2>&1 &
        ;;
        "l" | "L" )
            cat  "$file" | awk -F'/' '{ if(length($NF)>70) $NF=substr($NF,0,70) ; print $NF}' | cat -n  |less
        ;;
        "a" )
            mv "$2" "$DIR0"
            echo "$DIR0/$2" >> "$file"
        ;;
        "e" )
            nohup notepadqq "$file" </dev/null >/dev/null 2>&1 &
        ;;
        "h" )
            printhelp "h" "print this help"
            printhelp "" "play next"
            printhelp "[number]" "play [number] of the list"
            printhelp "l, L" "print list items"
            printhelp "a" "move 2nd arg to videos folder and add to list"
            printhelp "e" "edit vclips.m3u"
        ;;
        * )
            number='^[0-9]+$'
            if [[ $1 =~ $number ]] ; then play $1 ; fi
        ;;
esac