#! /usr/bin/perl
#
# 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::Substitute;

use AMC::Basic;

sub new {
    my (%o) = @_;
    my $self = {
        names   => '',
        scoring => '',
        assoc   => '',
        name    => '',
        chsign  => 4,
        lk      => '',
    };

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

    bless $self;
    return ($self);
}

sub format_note {
    my ( $self, $mark ) = @_;

    if ( $self->{chsign} ) {
        $mark = sprintf( "%.*g", $self->{chsign}, $mark );
    }
    return ($mark);
}

sub substitute {
    my ( $self, $text, $student, $copy ) = @_;

    if ( $self->{scoring} ) {
        my $student_mark = $self->{scoring}->student_global( $student, $copy );

        if ($student_mark) {
            $text =~ s/\%[S]/$self->format_note($student_mark->{total})/ge;
            $text =~ s/\%[M]/$self->format_note($student_mark->{max})/ge;
            $text =~ s/\%[s]/$self->format_note($student_mark->{mark})/ge;
            $text =~
s/\%[m]/$self->format_note($self->{scoring}->variable('mark_max'))/ge;
        } else {
            debug "No marks found ! Copy="
              . studentids_string( $student, $copy );
        }
    }

    $text =~ s/\%[n]/$self->{name}/ge;

    if ( $self->{assoc} && $self->{names} ) {
        $self->{lk} = $self->{assoc}->variable('key_in_list')
          if ( !$self->{lk} );

        my $i = $self->{assoc}->get_real( $student, $copy );
        my $n;

        if ( defined($i) ) {
            debug "Association -> ID=$i";

            ($n) = $self->{names}->data( $self->{lk}, $i, test_numeric => 1 );
            if ($n) {
                $text = $self->{names}->substitute( $n, $text, prefix => '%' );
            }
        } else {
            debug "Not associated";
        }
    }

    return ($text);
}

1;