package RPS::Import::NapsterStream;

use strict;


use Date::Calc qw(Days_in_Month);

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

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

#private constants
use constant FIELD_RECTYPE		=> 0;

#header record
use constant FIELD_DATEBEGIN	=> 3;
use constant FIELD_DATEEND		=> 4;

#detail record
use constant FIELD_VENDORID		=> 3;
use constant FIELD_ISRC			=> 4;
use constant FIELD_UPC			=> 5;
use constant FIELD_ARTIST		=> 6;
use constant FIELD_TRACK		=> 7;
use constant FIELD_COUNTRY		=> 10;
use constant FIELD_FORMAT		=> 11;
use constant FIELD_UNITS		=> 12;

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

#public methods

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

	my $retval = undef;
	my $lines = $args{lines};

    my $fileObj = $args{file};
    ##my $version = $args{version}; # for cmd-line testing
    my $version = $fileObj->VersionNum;
    ##my $fileName = $args{OrigFileName}; # for cmd-line testing
    my $fileName = $fileObj->OrigFileName;

	if ($lines)
	{
		my $dateBegin;
		my $dateEnd;

        if ($version == 6) {
            ## version 6 has no header, must get dates from filename
            $fileName =~ m/([01]\d)(\d\d)/;
            my $year = 2000 + $2;
            my $month = $2;
            $dateBegin = $year."-".$month."-01";
            $dateEnd   = $year."-".$month."-".Days_in_Month($year, $month);

            unless ($dateBegin && $dateEnd)
            {
                $self->errstr("couldn't get dates");
                print STDERR "filename: $fileName\n";
                return undef;
            }
        }

		my $linenum = 1;
		foreach my $line(@$lines)
		{
			if ($line->[FIELD_RECTYPE] eq 'H')
			{
				# standard napster date format matches ours, but run through normalize
				# in case somebody decorated it along the way
				$dateBegin = Common::Util::normalize_date($line->[FIELD_DATEBEGIN]) || $line->[FIELD_DATEBEGIN];
				$dateEnd = Common::Util::normalize_date($line->[FIELD_DATEEND]) || $line->[FIELD_DATEEND];
                unless ($dateBegin =~ m/^\d{4}-\d\d-\d\d$/ && $dateEnd =~ m/^\d{4}-\d\d-\d\d$/)
                {
                    $self->errstr("couldn't get dates");
                    print STDERR sprintf("dates: %s - %s\n",
                        $line->[FIELD_DATEBEGIN],$line->[FIELD_DATEEND]);
                    return undef;
                }
			}
			elsif ($line->[FIELD_RECTYPE] eq 'D')
			{
				my $prodtype	= RPS::File::Sale::TYPE_TRACK;
				my $upc			= Common::Util::normalize_upc($line->[FIELD_UPC]);
				my $isrc		= Common::Util::normalize_isrc($line->[FIELD_ISRC]);
				my $artist		= $line->[FIELD_ARTIST];
				my $track		= $line->[FIELD_TRACK];
				my $format;

				# we ignore napster format 1 which is the original tethered download
				# instead we just count the plays of those (all they pay for)
				# note check for format before writing sale record
				if ($line->[FIELD_FORMAT] eq '2')
				{
					$format = RPS::File::Sale::FORMAT_STREAM;
				}
				elsif ($line->[FIELD_FORMAT] eq '5')
				{
					$format = RPS::File::Sale::FORMAT_TETHERED;
				}
				my $vendorid	= $line->[FIELD_VENDORID];
				my ($units)		= $line->[FIELD_UNITS] =~ m/^(-?\d+)$/;;
				my $countryCode	= $line->[FIELD_COUNTRY];

				if ($format && $units && $track)
				{
					my $sale = RPS::Import::SaleRec->new();

					$sale->productType($prodtype);
					$sale->formatType($format);
					$sale->dateBegin($dateBegin);
					$sale->dateEnd($dateEnd);
					$sale->serviceProductID($vendorid);
					$sale->upc($upc);
					$sale->isrc($isrc);
					$sale->artistName($artist);
					$sale->trackName($track);
					$sale->units($units);
					$sale->countryCode($countryCode);
					$sale->lineNum($linenum);

                    ##$args{dumper}($sale);  ## for cmd-line testing
					$self->_insertSale(sale => $sale);
				}
            }
			$linenum++;
		}
		$retval = $linenum;
	}

	return $retval;
}

#
# Private methods
#


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