#!/usr/bin/env perl
# PODNAME: digital_input
# ABSTRACT: Calculate one input value through a Digital::Driver class

$|=1;

use strict;
use warnings;
use Module::Runtime qw( use_module );
use lib "lib";
use Time::HiRes qw( usleep );

sub value {
  my ( $class, $input, $function ) = @_;

  if ($class =~ m/^\+(.*)/) {
    $class = $1;
  } else {
    $class = 'DigitalX::'.$class;
  }

  my $digi = use_module($class)->input($input);

  return $function ? $digi->$function : $digi+0;
}

my ( $class, $input, $function ) = @ARGV;

eval {

  if ($input =~ /^(\d*)-(\d*)$/) {
    my $min = $1 || 0;
    my $max = $2;
    if ($max) {
      my $length = length($max);
      for ($min..$max) {
        print sprintf('%'.($length).'.d',$_).': '.value($class, $_, $function)."\n";
        usleep 100;
      }
    } else {
      while (1) {
        print $min.': '.value($class, $min, $function)."\n";
        $min++;
        usleep 100;
      }
    }
  } else {
    print value($class, $input, $function)."\n";  
  }

  exit 0;

};

print $@."\n" if $@;

exit 1;

__END__

=pod

=head1 NAME

digital_input - Calculate one input value through a Digital::Driver class

=head1 VERSION

version 0.003

=head1 SYNOPSIS

  bash$ digital_input DigitalX::MyDriver 613
  bash$ digital_input DigitalX::MyDriver 50-1000
  bash$ digital_input DigitalX::MyDriver -1000
  bash$ digital_input DigitalX::MyDriver 50- # endless
  bash$ digital_input DigitalX::MyDriver 613 F

=head1 DESCRIPTION

=head1 SUPPORT

IRC

  Join #hardware on irc.perl.org. Highlight Getty for fast reaction :).

Repository

  https://github.com/cindustries/perl-digital
  Pull request and additional contributors are welcome

Issue Tracker

  https://github.com/cindustries/perl-digital/issues

=head1 AUTHOR

Torsten Raudssus <torsten@raudss.us>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2020 by Torsten Raudssus.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut