package RPS::Import::Merlin::v13;

use strict;

use lib '/app/tools/common/lib';
use Common::Date;
use Common::Country;

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

use Data::Dumper;
use Date::Calc qw(Days_in_Month Decode_Month);

sub _fieldMap {
    {
        # header
        currencyCode     => 'D',
        dateBegin        => 'A',

        # detail
        albumName        => 'G',
        artistName       => 'E',
        countryCode      => 'B',
        formatType       => 'O',
        isrc             => 'C',
        price            => 'L',
        trackName        => 'F',
        serviceID        => 'A',
        units            => 'J',
        upc              => 'D',
    }
}

sub _unverifiedFieldMap {
    {
        # footer
        distFee      => 'M',
    }
}

sub _headerIdentifier { ( upc => 'EAN UPC' ) }

sub productType { RPS::File::Sale::TYPE_TRACK; }

sub mediaType { return RPS::DB::Item::MediaType::kMediaTypeAudio; }

sub serviceID {
    my $self = shift;
    my $service = $self->_getByFieldName('serviceID');
    my $_serviceID = $self->getServiceID(lc ($service)) || $RPS::Import::ServiceMap::SERVICE_ALIASES{ lc $service };
    if( $_serviceID )
    {
        return $self->{_serviceID};
    }
    $self->fail( "Unknown service '$service'" );
}

sub saleDates {
    my $self = shift;
    return ($self->{_startDate}, $self->{_endDate}) if( $self->{_startDate} ); # from header; see _preProcess
}

sub currencyCode {
    my $self = shift;
    return $self->{_currencyCode} if( $self->{_currencyCode} ); # from header; see _preProcess
}

sub formatType {
    my $self = shift;
    my $type = $self->_getByFieldName('formatType');

    if( $type =~ /^(premium|plus|basic-stream|basic-cached|on\-demand|pre\-configured|subscriber\-normal)$/i )
    {
        return RPS::File::Sale::FORMAT_STREAM;
    }
    else
    {
        $self->fail( "Could not determine format from $type");
    }
}

# Return 1 if distribution fee is optional.  By default, the
# fee must be present in the sales file.
#
sub distFeeOptional { 0 }

sub price {
    my $self = shift;

    my $price = $self->_getByFieldName('price');
    

    # If the distribution fee isn't optional, then it must be present in
    # the sales file and we'll factor it into the revenue here.
    #
    # Otherwise, you will have to enable the dist fee option in the tracker page
    # XSLT (see raptor/templates/tracker.xsl) and override distFeeOptional()
    # such that it returns 1 for the appropriate importer version.  The end-user
    # will then have to manually input the dist fee via the tracker page.
    #
    if( !$self->distFeeOptional )
    {
        $self->fail( "Unable to determine distribution fee" ) unless( $self->{_distFee} );
    
        my $distFee = $self->{_distFee};
        $distFee = (100 - $distFee) * .01;
        $price *= $distFee;
    }

    return $price;
}

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

    Log->info( "Starting _preProcess" );
    $self->SUPER::_preProcess(%args);

    my $distFee;

    my $getDateFlag;     # set if we find a date header
    my $getCurrencyFlag; # set if we find a currency header

    foreach my $line(@{ $args{lines} }) {

        $self->{line} = $line;

        # Get the date from the header
        #
        if( !$getDateFlag && $self->_getByFieldName('dateBegin') =~ /accounted period/i )
        {
            $getDateFlag = 1;
        }
        elsif( !$self->{_startDate} && $getDateFlag )
        {
            my $dt = $self->_getByFieldName('dateBegin');

            if( $dt =~/^(\d{4}) (\d{2})$/ ) # YYYY MM
            {
                $self->{_startDate} = sprintf( "%04d-%02d-%02d", $1, $2, 1 );

                $self->{_endDate}   = sprintf( "%04d-%02d-%02d", $1, $2, Days_in_Month($1, $2) )

            }
            else
            {
                print STDERR "_preProcess: WARNING: Unable to decode date '$dt'\n";
                $self->errstr("Unable to decode date '$dt' in header");
                return undef;
            }
        }

        # Get the country from the header
        #
        if( !$getCurrencyFlag && $self->_getByFieldName('currencyCode') =~ /Currency/i )
        {
            $getCurrencyFlag = 1;
        }
        elsif( !$self->{_currencyCode} && $getCurrencyFlag )
        {
            $self->{_currencyCode} = $self->_getByFieldName('currencyCode');
        }

        # Get the distribution fee from the footer
        #
        $distFee = $self->_getByFieldName('distFee');

        if ($distFee =~ /LESS Merlin ADMIN FEE \((.+?)%\)/)
        {    
            $self->{_distFee} = $1;
            last;
        }
    }
}

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