#!/usr/bin/perl

# Copyright 2009 SARL Biblibre
#
# 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 C4::Auth qw( get_template_and_user );
use CGI qw ( -utf8 );
use C4::Context;
use C4::Output qw( output_html_with_http_headers );
use C4::Reports qw( GetDelimiterChoices );
use C4::Serials qw( GetExpirationDate HasSubscriptionExpired );

=head1 serials_out

plugin that shows a stats on serials

=head1 DESCRIPTION

=cut

my $input      = CGI->new;
my $templatename   = "reports/serials_stats.tt";
my $do_it      = $input->param("do_it");
my $bookseller = $input->param("bookseller");
my $branchcode = $input->param("branchcode");
my $expired    = $input->param("expired");
my $order      = $input->param("order");
my $output     = $input->param("output");
my $basename   = $input->param("basename");
our $sep       = $input->param("sep") || '';
$sep = "\t" if ($sep eq 'tabulation');

my ($template, $borrowernumber, $cookie)
	= get_template_and_user({template_name => $templatename,
				query => $input,
				type => "intranet",
				flagsrequired => {reports => '*'},
				});
				
				
				
my $dbh = C4::Context->dbh;

if($do_it){
    my $where = "WHERE 1 ";
    my @args;
    # if a specific branchcode was selected
    if( $branchcode ne '' ){
        $where .= "AND branchcode = ? ";
        push @args,$branchcode;
    }
    
    # if a specific bookseller was selected
    if($bookseller ne ''){
        $where .= "AND aqbooksellerid = ? ";
        push @args,$bookseller;
    }

    my $sth = $dbh->prepare("SELECT * 
                             FROM subscription 
                               LEFT JOIN aqbooksellers 
                               ON (aqbooksellers.id=subscription.aqbooksellerid)
                               LEFT JOIN biblio
                               ON (biblio.biblionumber=subscription.biblionumber)
                               $where
                            ");

    $sth->execute(@args);
    
    ## hash generation of items by branchcode
    my @datas;

    while(my $row = $sth->fetchrow_hashref){
        $row->{'enddate'} = GetExpirationDate($row->{'subscriptionid'});
        $row->{expired} = HasSubscriptionExpired($row->{subscriptionid});
        push @datas, $row if (
            $expired
            or (
                not $expired
                and (
                    not $row->{expired}
                    and not $row->{closed}
                )
            )
        );
    }

    if($output eq 'screen'){
        $template->param(datas => \@datas,
                         do_it => 1);
    }else{
        binmode STDOUT, ':encoding(UTF-8)';
        print $input->header(-type => 'application/vnd.sun.xml.calc',
                         -encoding => 'utf-8',
                             -name => "$basename.csv",
                       -attachment => "$basename.csv");
        print "Vendor".$sep;
        print "Title".$sep;
        print "Subscription id".$sep;
        print "Branch".$sep;
        print "Callnumber".$sep;
        print "Subscription Begin".$sep;
        print "Subscription End\n";
        
        foreach my $item (@datas){
            print $item->{name}.$sep;
            print $item->{title}.$sep;
            print $item->{subscriptionid}.$sep;
            print $item->{branchcode}.$sep;
            print $item->{callnumber}.$sep;
            print $item->{startdate}.$sep;
            print $item->{enddate}."\n";
        }
        exit;
    }
}else{
    ## We generate booksellers list
    my @booksellers;
    
    my $sth = $dbh->prepare("SELECT aqbooksellerid, aqbooksellers.name 
                                FROM subscription 
                                  LEFT JOIN aqbooksellers ON (subscription.aqbooksellerid=aqbooksellers.id ) 
                                GROUP BY aqbooksellerid, aqbooksellers.name
                                ORDER BY aqbooksellers.name ASC
				");
    $sth->execute();
    
    while(my $row = $sth->fetchrow_hashref){
        push(@booksellers,$row)
    }

    my $CGIextChoice = ( 'CSV' ); # FIXME translation
	my $CGIsepChoice=GetDelimiterChoices;
	$template->param(
		CGIextChoice => $CGIextChoice,
		CGIsepChoice => $CGIsepChoice,
        booksellers  => \@booksellers,
    );
}

output_html_with_http_headers $input, $cookie, $template->output;