# version 3
# don't steal it
# or else

use strict;
use warnings;
use subs qw(inbox);
use File::Basename; # imports basename()
use IO::Handle;
use FileHandle;
use File::Copy; # imports copy()
use File::Find; # imports find()
use Image::MetaData::JPEG;
use Image::Magick;
use Getopt::Long qw(:config bundling);
use Deans::Functions qw( skew ); # imports skew()
use constant {
  NAME => basename($0),
  HOME => skew(@{[ fileparse($0) ]}[1])
};

## get the command line args
my (
  $orig_remove,             # Do not unlink old pics from the camera.
  $justin_is_sexy,          # Well, I am.
  $image_format_regex,      # The regex that find will use to see if it's found a valid file.
  $raw_dir_orig,            # Specify where the camera stores it's pictures.
  $raw_dir_final,           # Specify where raw pictures are to be moved.
  $raw_dir_temp             # Specify a pictures will be worked on.
) = (
  1,
  1,
  'hpim(\d+)\.jpe?g$',
  'P:/',
  skew($ENV{USERPROFILE},'My Documents/My Pictures/From Camera/raws'),
  $ENV{TEMP}
);

GetOptions(
  'raw-directory|R=s'    => \$raw_dir_orig,
  'local-directory|L=s'  => \$raw_dir_final,
  'temp-directory|T=s'   => \$raw_dir_temp,
  'remove-old!'          => \$orig_remove,
  'image-format-regex=s' => \$image_format_regex,
  'help|h|H'             => \&print_help
);

## test the directories, and enter the temp dir
die $! unless -d $raw_dir_orig;
die $! unless -d $raw_dir_final;
die $! unless -d $raw_dir_temp;
die $! unless chdir($raw_dir_temp);

## check if there's already a temp dir, if not make one
unless (-d 'MNSPICMAN') {
  die $! unless mkdir('MNSPICMAN',0777);
}
die $! unless chdir('MNSPICMAN');
unlink(<*.jpg>);
unlink(<*.jpeg>);

## prime our best smokin' pipe
my  ($from_file_manager, $to_compressor);
pipe $from_file_manager, $to_compressor or die $!;
$to_compressor->autoflush(1);

## FORK!
if (my $pid = fork) { ## parent (compresses)
  while (inbox) {
    my $dir  = inbox;
    my $path = inbox;
    die $! unless defined $dir;
    die $! unless defined $path;
    my $file = skew($dir,join('',split(/_TEMP_/,$path))); #haha, screw off
    print "$file";

    my $magick = new Image::Magick;
       $magick->Read($path);

    $magick->[0]->Resize(
      geometry => '52%',
      filter   => 'sinc'
    );

    $magick->[0]->Crop(
      geometry => '1600x1200'
    );

    $magick->[0]->Write(
      filename => $file,
      comment  => 'Captured by: Justin Lee (kool.name@gmail.com)',
      quality  => 97
    );

    die $! unless -e $file;
    undef  $magick;
    unlink $path;
    print "...done\n";
  }

  print "DONE!\n";

} elsif (defined $pid) { ## child (copies and dates pictures)
  print "welcome\n";
  find(
    { no_chdir => 1,
      wanted   => \&copy_date_move },
    $raw_dir_orig
  );

  print $to_compressor "done\n";
} else { ## fork failed
  die $!;
}

## the end
exit 0;

## subs
sub inbox {
  chomp(my $in = <$from_file_manager>);

  return   0 unless $in;
  return   0 if $in =~ /^(?:0|done|failed)$/io;
  return   1 if $in =~ /^(?:1|working)$/io;
  return $in;
}

sub copy_date_move {
  return unless $_ =~ /$image_format_regex/oi;
  my $id = defined($1) ? $1 : '';
  print $to_compressor "working\n";

  my $old = $_;
  my $new = basename($old); #this is okay, you'll see
  move($old,$new);

  my  $image = new Image::MetaData::JPEG ($new);
  my  $exif  = $image->get_Exif_data('IMAGE_DATA', 'TEXTUAL');
  my ($date,
      $time) = split(/\s+/,$exif->{DateTimeOriginal}->[0]);
  $date =~ s/:|\s|;/-/go;
  $time =~ s/:|\s|-|;//go;
  chop($time); #wtf

  my $dated_dir = skew($raw_dir_final,$date);
  unless (-d $dated_dir) {
    die $! unless mkdir($dated_dir,0777);
  }
  print $to_compressor "$dated_dir\n";

  my $to_compress = "${time}${id}_TEMP_.JPG";
  die $! unless move($new,$to_compress);

  undef $image;
  undef $exif;

  print $to_compressor "$to_compress\n";
  return;
}

sub print_help {
  print <<"EOH";

Name          : \u@{[ NAME ]} - Automatically move, compress and sort your pictures.
Usage         : @{[ NAME ]} [options]
Description   : \u@{[ NAME ]} is a script written for moving and compressing pictures
                from your camera to a local folder. The pictures are stored in
                directories named with ISO-like dates of `yyyy-mm-dd'.
Options       :
  -h, -H, --help
    Prints this message.

  -R, --raw-directory < /path/to/camera/raws/ >
    Specifies the path to the camera raws.  It can also be specified
    with -I in the setup file.  Note that this is a required piece of 
    data.

  -L, --local-directory < /path/to/new/files/ >
    Specifies the place to save the sorted pictures and directories.
    Defaults to `@{[ skew($ENV{'USERPROFILE'},'/My Documents/My Pictures/From Camera/raws') ]}'.

  -T, --temp-directory < /path/to/temp/files/ >
    Specifies the place to store pictures while they are being worked on.
    Defaults to `@{[ skew($ENV{'TEMP'}) ]}'.

   --image-format-regex
    Specifies the regex that find() will use to see if it's found a valid file.
    Defaults to `^hpim(\\d+)\\.jpe?g$', uses /i.  You can have one backtrace for
    use in the final file name.

   --remove-old, --no-remove-old
    Specifies whether or not to remove the original raws from the camera
    directory.  --remove-old by default.

EOH

  exit 0;
}