package RPS::Import::OmStream;

use strict;

use Date::Calc qw(Days_in_Month);

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

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

use constant FIELD_TOTAL => 7;
use constant FIELD_PAID  => 8;

use constant FIELD_TITLE    => 0;
use constant FIELD_UNITS    => 1;
use constant FIELD_ARTIST   => 2;
use constant FIELD_LABEL    => 3;
use constant FIELD_PRODTYPE => 4;
use constant FIELD_PRICE    => 5;

#public methods

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

    my $fileObj  = $args{file};
    my $fileName = $fileObj->OrigFileName;

    #my $fileName = $args{OrigFileName}; # for cmd-line testing

    my $lines = $args{lines};
    return 0 unless ($lines);

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

    my $rate = $self->_getRate($lines);
    unless ($rate) {
        $self->errstr("couldn't get rate");
        return undef;
    }

    my $format  = RPS::File::Sale::FORMAT_DOWNLOAD;
    my $linenum = 1;
    foreach my $line (@$lines) {
        my ( $track, $album );
        my $prodType = lc $line->[FIELD_PRODTYPE];

        my $artist  = $line->[FIELD_ARTIST];
        my ($units) = $line->[FIELD_UNITS] =~ m/^(\d+)$/;
        my ($price) = $line->[FIELD_PRICE] =~ m/^(-?\d+\.\d+)$/;
        my $label   = $line->[FIELD_LABEL];

        if ( $format && $price && $units && $artist ) {
            if ( $prodType eq 'track' ) {
                $prodType = RPS::File::Sale::TYPE_TRACK;
                $track    = $line->[FIELD_TITLE];
            } elsif ( $prodType eq 'album' ) {
                $prodType = RPS::File::Sale::TYPE_ALBUM;
                $album    = $line->[FIELD_TITLE];
            } else {
                $self->errstr('unknown product type');
                print STDERR "prod-type: $prodType\n";
                return undef;
            }

            $price *= $rate;

            my $sale = RPS::Import::SaleRec->new();

            $sale->productType($prodType);
            $sale->formatType($format);
            $sale->dateBegin($dateBegin);
            $sale->dateEnd($dateEnd);
            $sale->artistName($artist);
            $sale->albumName($album);
            $sale->trackName($track);
            $sale->units($units);
            $sale->price($price);
            $sale->labelName($label);
            $sale->lineNum($linenum);
            $sale->countryCode('US');

            #$args{dumper}($sale);  ## for cmd-line testing
            $self->_insertSale( sale => $sale );
        }    #else { print STDERR "skip: $linenum f: $format p: $price u: $units a: $artist\n"; }
        $linenum++;
    }
    return $linenum;
}

#
# Private methods
#

sub _getDates {
    my $self  = shift;
    my $fName = shift;

    return undef unless ( $fName =~ m/\D(\d)(st|nd|rd|th)qua\D+(\d\d\d\d)\D/i );
    my ( $month, $year ) = ( $1 * 3, $3 );

    return (
        Common::Util::normalize_date( join( '-', $year, $month - 2, 1 ) ),
        Common::Util::normalize_date( join( '-', $year, $month, Days_in_Month( $year, $month ) ) ),
    );
}

sub _getRate {
    my $self  = shift;
    my $lines = shift;

    # unfortunately, we have to iterate the entire file to find the totals at the end
    # and calculate the rate
    foreach my $line (@$lines) {
        if ( $line->[FIELD_PAID] =~ m/^(-?\d+\.\d+)$/ ) {
            my $paid = $1;
            my ($total) = $line->[FIELD_TOTAL] =~ m/^(-?\d+\.\d+)$/;

            return $paid / $total if ( $total && $total != 0 );
            last;
        }
    }

    return undef;
}

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