#!/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 2 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., 59 Temple Place,
# Suite 330, Boston, MA  02111-1307 USA
#
#   Written by Antoine Farnault antoine@koha-fr.org on Nov. 2006.

=head1 cleanborrowers.pl

This script allows to do 2 things.

=over 2

=item * Anonymise the borrowers' issues if issue is older than a given date. see C<datefilter1>.

=item * Delete the borrowers who has not borrowered since a given date. see C<datefilter2>.

=back

=cut

use strict;

#use warnings; FIXME - Bug 2505
use CGI;
use C4::Auth;
use C4::Output;
use C4::Dates qw/format_date format_date_in_iso/;
use C4::Members;        # GetBorrowersWhoHavexxxBorrowed.
use C4::Circulation;    # AnonymiseIssueHistory.
use C4::VirtualShelves ();    #no import
use Date::Calc qw/Today Add_Delta_YM/;

my $cgi = new CGI;

# Fetch the paramater list as a hash in scalar context:
#  * returns paramater list as tied hash ref
#  * we can edit the values by changing the key
#  * multivalued CGI paramaters are returned as a packaged string separated by "\0" (null)
my $params = $cgi->Vars;

my $filterdate1;              # the date which filter on issue history.
my $filterdate2;              # the date which filter on borrowers last issue.
my $borrower_dateexpiry;
my $borrower_categorycode;

# getting the template
my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
    {   template_name   => "tools/cleanborrowers.tmpl",
        query           => $cgi,
        type            => "intranet",
        authnotrequired => 0,
        flagsrequired   => { tools => 'delete_anonymize_patrons', catalogue => 1 },
    }
);

if ( $params->{'step2'} ) {
    $filterdate1           = format_date_in_iso( $params->{'filterdate1'} );
    $filterdate2           = format_date_in_iso( $params->{'filterdate2'} );
    $borrower_dateexpiry   = format_date_in_iso( $params->{'borrower_dateexpiry'} );
    $borrower_categorycode = $params->{'borrower_categorycode'};

    my %checkboxes = map { $_ => 1 } split /\0/, $params->{'checkbox'};

    my $totalDel;
    my $membersToDelete;
    if ( $checkboxes{borrower} ) {
        $membersToDelete =
          GetBorrowersToExpunge( { not_borrowered_since => $filterdate1, expired_before => $borrower_dateexpiry, category_code => $borrower_categorycode } );
        $totalDel = scalar @$membersToDelete;

    }
    my $totalAno;
    my $membersToAnonymize;
    if ( $checkboxes{issue} ) {
        $membersToAnonymize = GetBorrowersWithIssuesHistoryOlderThan($filterdate2);
        $totalAno           = scalar @$membersToAnonymize;
    }

    $template->param(
        step2                   => 1,
        totalToDelete           => $totalDel,
        totalToAnonymize        => $totalAno,
        memberstodelete_list    => $membersToDelete,
        memberstoanonymize_list => $membersToAnonymize,
        filterdate1             => format_date($filterdate1),
        filterdate2             => format_date($filterdate2),
        borrower_dateexpiry     => $borrower_dateexpiry,
        borrower_categorycode   => $borrower_categorycode,
    );

    ### TODO : Use GetBorrowersNamesAndLatestIssue function in order to get the borrowers to delete or anonymize.
    output_html_with_http_headers $cgi, $cookie, $template->output;
    exit;
}

if ( $params->{'step3'} ) {
    $filterdate1           = format_date_in_iso( $params->{'filterdate1'} );
    $filterdate2           = format_date_in_iso( $params->{'filterdate2'} );
    $borrower_dateexpiry   = format_date_in_iso( $params->{'borrower_dateexpiry'} );
    $borrower_categorycode = $params->{'borrower_categorycode'};

    my $do_delete = $params->{'do_delete'};
    my $do_anonym = $params->{'do_anonym'};

    my ( $totalDel, $totalAno, $radio ) = ( 0, 0, 0 );

    # delete members
    if ($do_delete) {
        my $membersToDelete =
          GetBorrowersToExpunge( { not_borrowered_since => $filterdate1, expired_before => $borrower_dateexpiry, category_code => $borrower_categorycode } );
        $totalDel = scalar(@$membersToDelete);
        $radio    = $params->{'radio'};
        if ( $radio eq 'trash' ) {
            my $i;
            for ( $i = 0 ; $i < $totalDel ; $i++ ) {
                MoveMemberToDeleted( $membersToDelete->[$i]->{'borrowernumber'} );
                C4::VirtualShelves::HandleDelBorrower( $membersToDelete->[$i]->{'borrowernumber'} );
                DelMember( $membersToDelete->[$i]->{'borrowernumber'} );
            }
        } else {    # delete completly.
            my $i;
            for ( $i = 0 ; $i < $totalDel ; $i++ ) {
                C4::VirtualShelves::HandleDelBorrower( $membersToDelete->[$i]->{'borrowernumber'} );
                DelMember( $membersToDelete->[$i]->{'borrowernumber'} );
            }
        }
        $template->param(
            do_delete => '1',
            TotalDel  => $totalDel
        );
    }

    # Anonymising all members
    if ($do_anonym) {
        #FIXME: anonymisation errors are not handled
        ($totalAno,my $anonymisation_error) = AnonymiseIssueHistory($filterdate2);
        $template->param(
            filterdate1 => $filterdate2,
            do_anonym   => '1',
        );
    }

    $template->param(
        step3 => '1',
        trash => ( $radio eq "trash" ) ? (1) : (0),
    );

    #writing the template
    output_html_with_http_headers $cgi, $cookie, $template->output;
    exit;
}

$template->param(
    step1                    => '1',
    filterdate1              => $filterdate1,
    filterdate2              => $filterdate2,
    borrower_categorycodes   => GetBorrowercategoryList(),
);

#writing the template
output_html_with_http_headers $cgi, $cookie, $template->output;