#
# Copyright (C) 2012-2021 Alexis Bienvenüe <paamc@passoire.fr>
#
# This file is part of Auto-Multiple-Choice
#
# Auto-Multiple-Choice is free software: you can redistribute it
# and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 2 of
# the License, or (at your option) any later version.
#
# Auto-Multiple-Choice is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Auto-Multiple-Choice.  If not, see
# <http://www.gnu.org/licenses/>.

use warnings;
use 5.012;

package AMC::Filter;

sub new {
    my ( $class, %o ) = @_;
    my $self = {
        errors          => [],
        project_options => {},
        filter_results  => {},
        jobname         => '',
        jobspecific     => '',
    };

    for my $k ( keys %o ) {
        $self->{$k} = $o{$k} if ( defined( $self->{$k} ) );
    }

    bless( $self, $class );
    return $self;
}

sub clear {
    my ($self) = @_;
    $self->{errors} = [];
}

sub error {
    my ( $self, $error_text ) = @_;
    push @{ $self->{errors} }, $error_text;
}

sub errors {
    my ($self) = @_;
    return ( @{ $self->{errors} } );
}

sub pre_filter {
    my ( $self, $input_file ) = @_;
}

sub filter {
    my ( $self, $input_file, $output_file ) = @_;
}

#####################################################################
# The following methods should NOT be overwritten
#####################################################################

sub set_project_option {
    my ( $self, $name, $value ) = @_;
    $self->{project_options}->{$name} = $value;
    print "VAR: project:$name=$value\n";
}

sub set_filter_result {
    my ( $self, $name, $value ) = @_;
    $self->{filter_results}->{$name} = $value;
}

sub get_filter_result {
    my ( $self, $name ) = @_;
    return ( $self->{filter_results}->{$name} );
}

sub unchanged {
    my ($self) = @_;
    return ( $self->get_filter_result('unchanged') );
}

1;
