#!/usr/bin/perl
#
#
use strict;
use warnings;
use Getopt::Long;
use Pod::Usage;

my $input     = '';
my $output    = 'addresses.csv';
my $delimiter = "##";

GetOptions(
    'i|input=s'     => \$input,
    'o|output=s'    => \$output,
    'd|delimiter=s' => \$delimiter
);

pod2usage( -message => "Missing input file name :\n", -verbose => 1 )
  if ( $input eq '' );

my ( @table, @cols );
my %cols;

open( my $in, "<", $input ) or die "Can not open $input ", $!, " \n";
local $/;
my $content = <$in>;
close $in;

open( my $out, '>', $output ) or die "Can not open $output", $!, "\n";

if ( $content =~ /\t/ ) {
    $content =~ s/\t//g;
}

my @chunks = split '#', $content;

for my $line (@chunks) {
    my %data;
    if ( $line =~ /CONTACT/ ) {
        $line =~ s/CONTACT//;
        if ( $line =~ /\n/ ) {
            my @line = split /\n/, $line;
            for my $line (@line) {
                chomp $line;
                if ( $line =~ /(.+?)=.+/ ) {
                    unless ( $cols{$1} and $cols{$1} == 1 ) {
                        $cols{ ucfirst lc $1 } = 1;
                        push @cols, ucfirst lc $1;
                    }
                    my @fields = split '=', $line;
                    if ( $fields[1] ) {
                        $data{ ucfirst lc $fields[0] } = $fields[1];
                    }
                }
            }
        }
    }
    push @table, \%data if (%data);
}

print $out join $delimiter, @cols, "\n";

for my $row (@table) {
    my @rows;
    for (@cols) {
        if ( $$row{$_} ) {
            push @rows, $$row{$_};
        }
    }
    print $out join $delimiter, @rows, "\n";
}

close $out;

__END__

=head1 NAME

operaadr2csv.pl - Converts Opera .adr files to csv file

=head1 SYNOPSIS

operaadr2csv.pl -i [inputfile] [options]

 Options:
   -i | input
   -d | -delimiter           
   -o | -output            

=head1 OPTIONS

=over 8

=item -i

Sets the name of the input file. This option is mandatory.

=item -d

Sets a delimiter. The default delimiter is ##    

=item -o

Sets a name for the outputfile. The default name for the output file is addresses.csv

=back

=head1 DESCRIPTION

This program will convert contacts from opera browser .adr fileformat to a csv list. The delimiter for the creation of the csv file can be changed.

=cut