use Scalar::Util qw( looks_like_number );

=head3 shift_due_date

    $checkout->shift_due_date({ hard_due_date => $dt });

    $checkout->shift_due_date({ days => $days_count });

=cut

sub shift_due_date {

    my ($self, $params) = @_;

    my $hard_due_date = $params->{hard_due_date};

    my $days          = $params->{days};

    if ( $hard_due_date and $days ) {

        Koha::Exceptions::BadParameter->throw( "Called with both 'days' and 'hard_due_date'. Only one can be used." );

    }

    if ( !( $days or $hard_due_date ) ) {

        Koha::Exceptions::BadParameter->throw( "At least one parameter needs to be passed" );

    }

    my $due_date = dt_from_string($self->date_due);

    if ( $hard_due_date ) {

        # We require a DateTime

        Koha::Exceptions::WrongParameter->throw(

            "'hard_due_date' must be a DateTime object"

        ) unless $hard_due_date->isa('DateTime');

        $due_date = $hard_due_date->clone->set(

            hour   => $due_date->hour,

            minute => $due_date->minute,

            second => $due_date->second

        );

    }

    else {

        Koha::Exceptions::WrongParameter->throw(

            "'days' must be an integer"

        ) unless looks_like_number($days);

        $due_date->add( days => $days );

    }

    return $self->date_due( $due_date );

}

#!/usr/bin/perl

# This file is part of Koha.

#

# Koha 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 3 of the License, or

# (at your option) any later version.

#

# Koha 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 Koha; if not, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use Test::More tests => 1;

use Test::Exception;

use t::lib::TestBuilder;

use Koha::DateUtils qw(dt_from_string output_pref);

my $schema  = Koha::Database->new->schema;

my $builder = t::lib::TestBuilder->new;

subtest 'shift_due_date() tests' => sub {

    plan tests => 10;

    $schema->storage->txn_begin;

    my $checkout = $builder->build_object(

        {

            class => 'Koha::Checkouts',

            value => {

                date_due => '2020-04-01 13:06:16'

            }

        }

    );

    throws_ok

        { $checkout->shift_due_date({ hard_due_date => 'cat', days => 'dog' }) }

        'Koha::Exceptions::BadParameter',

        'Passing both params makes it raise an exception';

    is( "$@", "Called with both 'days' and 'hard_due_date'. Only one can be used.", 'Exception stringified correctly' );

    throws_ok

        { $checkout->shift_due_date({ }) }

        'Koha::Exceptions::BadParameter',

        'Passing no params makes it raise an exception';

    is( "$@", "At least one parameter needs to be passed", 'Exception stringified correctly' );

    throws_ok

        { $checkout->shift_due_date({ hard_due_date => 'cat' }) }

        'Koha::Exceptions::WrongParameter',

        'Passing an invalid param type makes it raise an exception';

    is( "$@", "'hard_due_date' must be a DateTime object", 'Exception stringified correctly' );

    throws_ok

        { $checkout->shift_due_date({ days => 'dog' }) }

        'Koha::Exceptions::WrongParameter',

        'Passing an invalid param type makes it raise an exception';

    is( "$@", "'days' must be an integer", 'Exception stringified correctly' );

    my $hard_due_date = dt_from_string( '2020-04-13' );

    $checkout->shift_due_date({ hard_due_date => $hard_due_date });

    is(

        output_pref({ dt => dt_from_string($checkout->date_due) }),

        output_pref({ dt => dt_from_string('2020-04-13 13:06:16') })

    );

    $checkout->shift_due_date({ days => 3 });

    is(

        output_pref({ dt => dt_from_string($checkout->date_due) }),

        output_pref({ dt => dt_from_string('2020-04-16 13:06:16') })

    );

    $schema->storage->txn_rollback;

};

    my @checkouts;

        my $updated_checkout = $checkout->get_from_storage;

        push @checkouts, { current => $checkout, updated => $updated_checkout };