package RPS::Import::BuyMusic;

use strict;


use Date::Calc qw(Days_in_Month Decode_Month);

use lib '/app/tools/common/lib';
use Common::Util;

use lib '/app/tools/data_classes/lib';

use lib '/app/tools/rps/lib';
use RPS::Import::Importer;
use RPS::File::Sale;
use base 'RPS::Import::Importer';

use constant FIELD_TYPE     => 0;
use constant FIELD_UPC      => 1;
use constant FIELD_ISRC     => 2;
use constant FIELD_UNITS    => 3;
use constant FIELD_PRICE    => 4;

#
# public methods
#

sub _importLines
{
    my $self = shift;
    my %args = @_;
    my $lines = $args{lines};

    return undef unless $lines;

    my $fileName = $args{file}->OrigFileName;
    my ($dateBegin, $dateEnd) = _get_dates($fileName);

    unless ($dateBegin && $dateEnd)
    {
        $self->errstr("unable to get dates from file name ($fileName)");
        return undef;
    }
    #print STDERR "using dates: $dateBegin - $dateEnd\n";

    my $linenum = 1;
    foreach my $line(@$lines)
    {
        my $format      = RPS::File::Sale::FORMAT_DOWNLOAD;

        my $prodtype =  lc($line->[FIELD_TYPE]) eq 'a' ? RPS::File::Sale::TYPE_ALBUM :
                        lc($line->[FIELD_TYPE]) eq 't' ? RPS::File::Sale::TYPE_TRACK :
                        '';
        my $upc         = Common::Util::normalize_upc($line->[FIELD_UPC]);
        my $isrc        = $line->[FIELD_ISRC];
        my ($units)     = $line->[FIELD_UNITS] =~ m/^(\d+)$/;
        my $price       = $line->[FIELD_PRICE];

        if ($prodtype && $upc && $units && $price)
        {
            my $sale = RPS::Import::SaleRec->new();

            $sale->productType($prodtype);
            $sale->formatType($format);
            $sale->dateBegin($dateBegin);
            $sale->dateEnd($dateEnd);
            $sale->upc($upc);
            $sale->isrc($isrc);
            $sale->units($units);
            $sale->price($price);
            $sale->lineNum($linenum);

            $self->_insertSale(sale => $sale);
        }
        $linenum++;
    }
    return $linenum;
}


#
# Private methods
#

sub _get_dates
{
    my $fName = shift;

    return undef unless ($fName =~ m/_(\d{4})(\d\d)\d\d\./i);
    my ($year, $month) = ($1, $2);

    if ($month == 1)
    {
        $year--;
        $month = 12;
    }
    else
    {
        $month--;
    }

    return (
        sprintf("%04d-%02d-01", $year, $month), 
        sprintf("%04d-%02d-%02d", $year, $month, Days_in_Month($year, $month))
    );
}

###
1;# Play nicely.
###