#!/usr/bin/perl

#script to show suppliers and orders

# Copyright 2000-2002 Katipo Communications
# Copyright 2008-2009 BibLibre SARL
# Copyright 2010 PTFS Europe
#
# 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>.

=head1 NAME

booksellers.pl

=head1 DESCRIPTION

this script displays the list of suppliers & baskets like C<$supplier> given on input arg.
thus, this page brings differents features like to display supplier's details,
to add an order for a specific supplier or to just add a new supplier.

=head1 CGI PARAMETERS

=over 4

=item supplier

C<$supplier> is the string with which we search for a supplier

=back

=over 4

=item id or booksellerid

The id of the supplier whose baskets we will display

=back

=cut

use Modern::Perl;
use C4::Auth qw( get_template_and_user );
use C4::Budgets qw( GetBudgetHierarchy GetBudget CanUserUseBudget );
use C4::Output qw( output_html_with_http_headers );
use CGI qw ( -utf8 );

use C4::Acquisition qw( GetBasket GetBasketsInfosByBookseller CanUserManageBasket GetBasketgroup );
use C4::Context;

use Koha::Acquisition::Booksellers;
use Koha::Patrons;

my $query = CGI->new;
my ( $template, $loggedinuser, $cookie, $userflags ) = get_template_and_user(
    {   template_name   => 'acqui/booksellers.tt',
        query           => $query,
        type            => 'intranet',
        flagsrequired   => { acquisition => '*' },
    }
);

#parameters
my $supplier = $query->param('supplier');
my $booksellerid = $query->param('booksellerid');
my $allbaskets= $query->param('allbaskets')||0;
my @suppliers;

if ($booksellerid) {
    push @suppliers, Koha::Acquisition::Booksellers->find( $booksellerid );
} else {
    @suppliers = Koha::Acquisition::Booksellers->search(
        [
            { name => { -like => "%$supplier%" } },
            { 'aqbookseller_aliases.alias' => { -like => "%$supplier%" } },
        ],
        {
            order_by => { -asc => 'name' },
            join     => 'aqbookseller_aliases',
            distinct => 1,
        }
    )->as_list;
}

my $supplier_count = @suppliers;
if ( $supplier_count == 1 ) {
    $template->param(
        supplier_name => $suppliers[0]->name,
        booksellerid  => $suppliers[0]->id,
        basketcount   => $suppliers[0]->baskets->count,
        subscriptionscount => $suppliers[0]->subscriptions->count,
        active        => $suppliers[0]->active,
    );
}

my $uid;
# FIXME This script should only be accessed by a valid logged in patron
if ($loggedinuser) {
    # FIXME Should not be needed, logged in patron should be cached
    $uid = Koha::Patrons->find( $loggedinuser )->userid;
}

my $userenv = C4::Context::userenv;
my $viewbaskets = C4::Context->preference('AcqViewBaskets');

my $userbranch = $userenv->{branch};

my $budgets = GetBudgetHierarchy;
my $has_budgets = 0;
foreach my $r (@{$budgets}) {
    next unless (CanUserUseBudget($loggedinuser, $r, $userflags));

    $has_budgets = 1;
    last;
}

#build result page
my $loop_suppliers = [];

for my $vendor (@suppliers) {
    my $baskets = GetBasketsInfosByBookseller( $vendor->id, $allbaskets );

    my $loop_basket = [];

    for my $basket ( @{$baskets} ) {
        if (CanUserManageBasket($loggedinuser, $basket, $userflags)) {
            my $patron = Koha::Patrons->find( $basket->{authorisedby} );
            foreach (qw(total_items total_biblios expected_items)) {
                $basket->{$_} ||= 0;
            }
            if ( $patron ) {
                $basket->{authorisedby} = $patron;
            }
            if ($basket->{basketgroupid}) {
                my $basketgroup = C4::Acquisition::GetBasketgroup($basket->{basketgroupid});
                if ($basketgroup) {
                    $basket->{basketgroup} = $basketgroup;
                }
            }
            push @{$loop_basket}, $basket; 
        }
    }

    push @{$loop_suppliers},
      { loop_basket => $loop_basket,
        booksellerid  => $vendor->id,
        name        => $vendor->name,
        active      => $vendor->active,
        vendor_type => $vendor->type,
        basketcount   => $vendor->baskets->count,
        subscriptioncount => $vendor->subscriptions->count,
      };

}
$template->param(
    loop_suppliers => $loop_suppliers,
    supplier       => ( $booksellerid || $supplier ),
    count          => $supplier_count,
    has_budgets          => $has_budgets,
);
$template->{VARS}->{'allbaskets'} = $allbaskets;

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