#!/usr/bin/perl

# Copyright 2014 ByWater Solutions
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use strict;
use warnings;

use CGI;
use JSON qw(to_json);

use C4::Auth qw(check_cookie_auth);
use C4::Biblio qw(GetMarcBiblio GetFrameworkCode GetRecordValue );
use C4::Circulation qw(GetIssuingCharges CanBookBeRenewed GetRenewCount GetSoonestRenewDate);
use C4::Koha qw(GetAuthorisedValueByCode);
use C4::Context;

use Koha::DateUtils;

my $input = new CGI;

my ( $auth_status, $sessionID ) =
  check_cookie_auth( $input->cookie('CGISESSID'),
    { circulate => 'circulate_remaining_permissions' } );

if ( $auth_status ne "ok" ) {
    exit 0;
}

my @sort_columns = qw/date_due title itype issuedate branchcode itemcallnumber/;

my @borrowernumber   = $input->param('borrowernumber');
my $offset           = $input->param('iDisplayStart');
my $results_per_page = $input->param('iDisplayLength') || -1;

my $sorting_column = $input->param('iSortCol_0') || q{};
$sorting_column = ( $sorting_column && $sort_columns[$sorting_column] ) ? $sort_columns[$sorting_column] : 'issuedate';

my $sorting_direction = $input->param('sSortDir_0') || q{};
$sorting_direction = $sorting_direction eq 'asc' ? 'asc' : 'desc';

$results_per_page = undef if ( $results_per_page == -1 );

binmode STDOUT, ":encoding(UTF-8)";
print $input->header( -type => 'text/plain', -charset => 'UTF-8' );

my @parameters;
my $sql = '
    SELECT
        issuedate,
        date_due,
        date_due < now() as date_due_overdue,
        issues.timestamp,

        onsite_checkout,

        biblionumber,
        biblio.title,
        author,

        itemnumber,
        barcode,
        itemnotes,
        itemcallnumber,
        replacementprice,

        issues.branchcode,
        branchname,

        items.itype,
        itemtype_item.description AS itype_description,
        biblioitems.itemtype,
        itemtype_bib.description AS itemtype_description,

        borrowernumber,
        surname,
        firstname,
        cardnumber,

        itemlost,
        damaged,

        DATEDIFF( issuedate, CURRENT_DATE() ) AS not_issued_today
    FROM issues
        LEFT JOIN items USING ( itemnumber )
        LEFT JOIN biblio USING ( biblionumber )
        LEFT JOIN biblioitems USING ( biblionumber )
        LEFT JOIN borrowers USING ( borrowernumber )
        LEFT JOIN branches ON ( issues.branchcode = branches.branchcode )
        LEFT JOIN itemtypes itemtype_bib ON ( biblioitems.itemtype = itemtype_bib.itemtype )
        LEFT JOIN itemtypes itemtype_item ON ( items.itype = itemtype_item.itemtype )
    WHERE borrowernumber
';

if ( @borrowernumber == 1 ) {
    $sql .= '= ?';
}
else {
    $sql .= ' IN (' . join( ',', ('?') x @borrowernumber ) . ') ';
}
push( @parameters, @borrowernumber );

$sql .= " ORDER BY $sorting_column $sorting_direction ";

my $dbh = C4::Context->dbh();
my $sth = $dbh->prepare($sql);
$sth->execute(@parameters);

my $item_level_itypes = C4::Context->preference('item-level_itypes');

my @checkouts_today;
my @checkouts_previous;
while ( my $c = $sth->fetchrow_hashref() ) {
    my ($charge) = GetIssuingCharges( $c->{itemnumber}, $c->{borrowernumber} );

    my ( $can_renew, $can_renew_error ) =
      CanBookBeRenewed( $c->{borrowernumber}, $c->{itemnumber} );
    my $can_renew_date =
      $can_renew_error && $can_renew_error eq 'too_soon'
      ? output_pref(
        {
            dt => GetSoonestRenewDate( $c->{borrowernumber}, $c->{itemnumber} ),
            as_due_date => 1
        }
      )
      : undef;

    my ( $renewals_count, $renewals_allowed, $renewals_remaining ) =
      GetRenewCount( $c->{borrowernumber}, $c->{itemnumber} );

    my $checkout = {
        DT_RowId   => $c->{itemnumber} . '-' . $c->{borrowernumber},
        title      => $c->{title},
        author     => $c->{author},
        barcode    => $c->{barcode},
        itemtype   => $item_level_itypes ? $c->{itype} : $c->{itemtype},
        itemtype_description => $item_level_itypes ? $c->{itype_description} : $c->{itemtype_description},
        itemnotes  => $c->{itemnotes},
        branchcode => $c->{branchcode},
        branchname => $c->{branchname},
        itemcallnumber => $c->{itemcallnumber}   || q{},
        charge         => $charge,
        price          => $c->{replacementprice} || q{},
        can_renew      => $can_renew,
        can_renew_error     => $can_renew_error,
        can_renew_date      => $can_renew_date,
        itemnumber          => $c->{itemnumber},
        borrowernumber      => $c->{borrowernumber},
        biblionumber        => $c->{biblionumber},
        issuedate           => $c->{issuedate},
        date_due            => $c->{date_due},
        date_due_overdue    => $c->{date_due_overdue} ? JSON::true : JSON::false,
        timestamp           => $c->{timestamp},
        onsite_checkout         => $c->{onsite_checkout},
        renewals_count      => $renewals_count,
        renewals_allowed    => $renewals_allowed,
        renewals_remaining  => $renewals_remaining,
        issuedate_formatted => output_pref(
            {
                dt          => dt_from_string( $c->{issuedate} ),
                as_due_date => 1
            }
        ),
        date_due_formatted => output_pref(
            {
                dt          => dt_from_string( $c->{date_due} ),
                as_due_date => 1
            }
        ),
        subtitle => GetRecordValue(
            'subtitle',
            GetMarcBiblio( $c->{biblionumber} ),
            GetFrameworkCode( $c->{biblionumber} )
        ),
        lost => $c->{itemlost} ? GetAuthorisedValueByCode( 'LOST', $c->{itemlost} ) : undef,
        damaged => $c->{damaged} ? GetAuthorisedValueByCode( 'DAMAGED', $c->{damaged} ) : undef,
        borrower => {
            surname    => $c->{surname},
            firstname  => $c->{firstname},
            cardnumber => $c->{cardnumber},
        },
        issued_today => !$c->{not_issued_today},
    };

    if ( $c->{not_issued_today} ) {
        push( @checkouts_previous, $checkout );
    }
    else {
        push( @checkouts_today, $checkout );
    }
}

@checkouts_today = reverse(@checkouts_today)
  if ( C4::Context->preference('todaysIssuesDefaultSortOrder') eq 'desc' );
@checkouts_previous = reverse(@checkouts_previous)
  if ( C4::Context->preference('previousIssuesDefaultSortOrder') eq 'desc' );

my @checkouts = ( @checkouts_today, @checkouts_previous );

my $data;
$data->{'iTotalRecords'}        = scalar @checkouts;
$data->{'iTotalDisplayRecords'} = scalar @checkouts;
$data->{'sEcho'}                = $input->param('sEcho') || undef;
$data->{'aaData'}               = \@checkouts;

print to_json($data);