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.
###