#!/usr/bin/env perl

# perl implementation of ding
# https://github.com/globau/ding/
# globau licensed his MIT, so this is too
# requires mpg321 for audio playback.
# to install on Ubuntu, 
#       sudo apt install mpg321

use feature qw{ say state } ;
use strict ;
use warnings ;
use utf8 ;

use DateTime ;
use DateTime::Duration ;

my $sound = join '/', $ENV{HOME}, 'sounds' ;
my $ding  = join '/', $sound, 'ding.mp3' ;
my $error = join '/', $sound, 'error.mp3' ;

if ( scalar @ARGV ) {
    my $start = DateTime->now() ;
    if ( system(@ARGV) == 0 ) {
        qx{mpg123 -q $ding} ;
        }
    else {
        qx{mpg123 -q $error} ;
        }
    my $end      = DateTime->now() ;
    my $duration = $end->subtract_datetime_absolute($start) ;
    my $seconds = $duration->delta_seconds();
    say qq{process took $seconds seconds};
    }
else {
    qx{mpg123 -q $ding} ;
    }

__DATA__

    As I understand ding

    if there's something in ARGV
        get starting timestamp
        try
            sound = error
            syscall ARGV
            sound = ding
        catch
            if error, print error
        get ending timestamp
        find duration between both 
        if duration > 1 seconds
            print elaptsed time

    else
        play ding


MIT License

Copyright (c) 2017 Dave Jacoby

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.