package RPS::Import::eMusicPre04;

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::File::Sale;
use RPS::Import::Importer;
use base 'RPS::Import::Importer';

my %field_map = (
                 9 => {
                        'upc'    => 0,
                        'track'  => 1,
                        'artist' => 2,
                        'album'  => 3,
                        'units'  => 4,
                        'price'  => 6,
                        },

                10 => {
                        'upc'    => 0,
                        'type'   => 1,
                        'name'   => 2,
                        'artist' => 3,
                        'units'  => 8,
                        'price'  => 10,
                        },

                11 => {
                        'upc'    => 0,
                        'type'   => 1,
                        'name'   => 2,
                        'artist' => 3,
                        'units'  => 8,
                        'price'  => 10,
                        },
                );

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

    my $lines = $args{lines};

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

    return undef unless ($lines && $version);
    my $offsets = $field_map{$version};

    my ($dateBegin, $dateEnd, $sub, $rate, $total) = $self->_parseSummary($lines);

    unless ($dateBegin && $dateEnd && defined $sub && defined $rate && defined $total)
    {
        $self->errstr("missing required summary data");
        print STDERR "dB:$dateBegin dE:$dateEnd sub:$sub rate:$rate t:$total\n";
        return undef;
    }
    print STDERR "using sub:$sub rate:$rate t:$total\n";

    my $label;

    my $header = 1;  # flag

    my $linenum = 1;
    foreach my $line(@$lines)
    {
        ## skip header
        if ($header && $line->[0] ne 'UPC') {
            $linenum++;
            next;
        }
        $header = 0;

        ## skip empty lines, get labels
        if ($line->[0] eq '') {
            $linenum++;
            next;
        } elsif ($line->[0] =~ m/^([A-Z][A-Z0-9\s]+)/) {
            $label = $1;
            $linenum++;
            next;
        }

        my $format  = RPS::File::Sale::FORMAT_VPD;
        my $upc     = Common::Util::normalize_upc($line->[$offsets->{'upc'}]);
        my $artist  = $line->[$offsets->{'artist'}];
        my ($units) = $line->[$offsets->{'units'}] =~ m/^(\d+)$/;
        my $price   = $line->[$offsets->{'price'}];

        my ($prodtype, $track, $album);

        if ($version == 9) {
            $prodtype    = RPS::File::Sale::TYPE_TRACK;
            $track       = $line->[$offsets->{'track'}];
            $album       = $line->[$offsets->{'album'}];

        } elsif ($version == 10 || $version == 11) {
            if ($line->[$offsets->{'type'}] eq 'A') {
                $prodtype    = RPS::File::Sale::TYPE_ALBUM;
                $album       = $line->[$offsets->{'name'}];
                $track       = "";
            } elsif ($line->[$offsets->{'type'}] eq 'T') {
                $prodtype    = RPS::File::Sale::TYPE_TRACK;
                $track       = $line->[$offsets->{'name'}];
                $album       = "";
            }
        }

        if ($upc && $artist && $units && $price)
            {
            my $netPrice = ($price / $units - $sub) * $rate;
            
            if($netPrice < 0){
                $netPrice = abs ($netPrice);
                $units = (-1) * abs ($units);              
            }
            # negative price is ok so the following line does not apply to this file
            #$netPrice = 0 if $netPrice < 0; # allow negative price

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

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

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


#
# Private methods
#

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

    my ($dateBegin, $dateEnd, $tUnits, $share, $tRoyalty);
    my $deductions = 0;

    foreach my $line(@$lines)
    {
        if ($line->[0] =~ m/^Through Date/ && $line->[2] =~ m#\d+[-/]\d+[-/]\d+#)
        { # date
            $dateEnd = Common::Util::normalize_date($line->[2]);
            $dateEnd =~ m/^(\d{4})-(\d\d)/;
            $dateBegin = sprintf("%d-%02d-01", $1, $2-2);
        }
        elsif ($line->[9] < 0 && $line->[0] !~ m/^Returns$/)
        { # deductions
            $deductions += $line->[9];
        }
        elsif ($line->[0] =~ m/^Net Units Sales/ && $line->[8] =~ m/^\d+$/)
        { # total units
            $tUnits = $line->[8];
        }
        elsif ($line->[0] =~ m/^Royalty Earned This Period/ && $line->[8] =~ m/^\%?(\d+[.]?\d+)/)
        { # share percentage
            $share = $1 < 1 ? $1 : $1 / 100;
            $tRoyalty = $line->[9];
            last;
        }
    }
    return 0 unless $tUnits;

    $deductions *= -1; # make it positive
    return ($dateBegin, $dateEnd, $deductions/$tUnits, $share, $tRoyalty);
}

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