#!/usr/bin/perl

# Copyright 2000-2009 Biblibre S.A
#                                         John Soros <john.soros@biblibre.com>
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use strict;
use warnings;

#need to open cgi and get the fh before anything else opens a new cgi context (see C4::Auth)
use CGI;
my $input = CGI->new;
my $uploadbarcodes = $input->param('uploadbarcodes');

use C4::Auth;
use C4::Context;
use C4::Output;
use C4::Biblio;
use C4::Items;
use C4::Dates qw/format_date format_date_in_iso/;
use C4::Koha;
use C4::Branch; # GetBranches
use C4::Circulation;

my $minlocation=$input->param('minlocation') || '';
my $maxlocation=$input->param('maxlocation');
$maxlocation=$minlocation.'Z' unless ( $maxlocation || ! $minlocation );
my $location=$input->param('location') || '';
my $itemtype=$input->param('itemtype'); # FIXME note, template does not currently supply this
my $ignoreissued=$input->param('ignoreissued');
my $datelastseen = $input->param('datelastseen');
my $offset = $input->param('offset');
my $markseen = $input->param('markseen');
$offset=0 unless $offset;
my $pagesize = $input->param('pagesize');
$pagesize=50 unless $pagesize;
my $branchcode = $input->param('branchcode') || '';
my $branch     = $input->param('branch');
my $op = $input->param('op');
my $res;    #contains the results loop
# warn "uploadbarcodes : ".$uploadbarcodes;
# use Data::Dumper; warn Dumper($input);

my ($template, $borrowernumber, $cookie)
    = get_template_and_user({template_name => "tools/inventory.tmpl",
                query => $input,
                type => "intranet",
                authnotrequired => 0,
                flagsrequired => {tools => 'inventory'},
                debug => 1,
                });

my $branches = GetBranches();
my @branch_loop;
for my $branch_hash (keys %$branches) {
	push @branch_loop, {value => "$branch_hash",
	                   branchname => $branches->{$branch_hash}->{'branchname'}, 
	                   selected => ($branch_hash eq $branchcode?1:0)};	
}

@branch_loop = sort {$a->{branchname} cmp $b->{branchname}} @branch_loop;
my @authorised_value_list;
my $authorisedvalue_categories = '';

my $frameworks = getframeworks();
$frameworks->{''} = {frameworkcode => ''}; # Add the default framework

for my $fwk (keys %$frameworks){
  my $fwkcode = $frameworks->{$fwk}->{'frameworkcode'};
  my $authcode = GetAuthValCode('items.location', $fwkcode);
    if ($authcode && $authorisedvalue_categories!~/\b$authcode\W/){
      $authorisedvalue_categories.="$authcode ";
      my $data=GetAuthorisedValues($authcode);
      foreach my $value (@$data){
        $value->{selected}=1 if ($value->{authorised_value} eq ($location));
      }      
      push @authorised_value_list,@$data;
    }
}

my $statuses = [];
for my $statfield (qw/items.notforloan items.itemlost items.wthdrawn items.damaged/){
    my $hash = {};
    $hash->{fieldname} = $statfield;
    $hash->{authcode} = GetAuthValCode($statfield);
    if ($hash->{authcode}){
        my $arr = GetAuthorisedValues($hash->{authcode});
        $hash->{values} = $arr;
        push @$statuses, $hash;
    }
}
$template->param( statuses => $statuses );
my $staton = {};								#authorized values that are ticked
for my $authvfield (@$statuses) {
    $staton->{$authvfield->{fieldname}} = [];
    for my $authval (@{$authvfield->{values}}){
        if ( defined $input->param('status-' . $authvfield->{fieldname} . '-' . $authval->{id}) && $input->param('status-' . $authvfield->{fieldname} . '-' . $authval->{id}) eq 'on' ){
            push @{$staton->{$authvfield->{fieldname}}}, $authval->{id};
        }
    }
}

my $statussth = '';
for my $authvfield (@$statuses) {
    if ( scalar @{$staton->{$authvfield->{fieldname}}} > 0 ){
        my $joinedvals = join ',', @{$staton->{$authvfield->{fieldname}}};
        $statussth .= "$authvfield->{fieldname} in ($joinedvals) and ";
    }
}
$statussth =~ s, and $,,g;
 
$template->param(branchloop => \@branch_loop,
                authorised_values=>\@authorised_value_list,   
                DHTMLcalendar_dateformat => C4::Dates->DHTMLcalendar(),
                today			=>	C4::Dates->today(),
                minlocation => $minlocation,
                maxlocation => $maxlocation,
                location=>$location,
                ignoreissued=>$ignoreissued,
                branchcode=>$branchcode,      
                branch    => $branch,
                offset => $offset,
                pagesize => $pagesize,
                datelastseen => $datelastseen,
                );
my @brcditems;
if ($uploadbarcodes && length($uploadbarcodes)>0){
    my $dbh=C4::Context->dbh;
    my $date = format_date_in_iso($input->param('setdate')) || C4::Dates->today('iso');
# 	warn "$date";
    my $strsth="select * from issues, items where items.itemnumber=issues.itemnumber and items.barcode =?";
    my $qonloan = $dbh->prepare($strsth);
    $strsth="select * from items where items.barcode =? and items.wthdrawn = 1";
    my $qwthdrawn = $dbh->prepare($strsth);
    my @errorloop;
    my $count=0;
    while (my $barcode=<$uploadbarcodes>){
        $barcode =~ s/\r?\n$//;
        if ($qwthdrawn->execute($barcode) &&$qwthdrawn->rows){
            push @errorloop, {'barcode'=>$barcode,'ERR_WTHDRAWN'=>1};
        }else{
            my $item = GetItem('', $barcode);
            if (defined $item && $item->{'itemnumber'}){
                ModItem({ datelastseen => $date }, undef, $item->{'itemnumber'});
                push @brcditems, $item;
                $count++;
                $qonloan->execute($barcode);
                if ($qonloan->rows){
                    my $data = $qonloan->fetchrow_hashref;
                    my ($doreturn, $messages, $iteminformation, $borrower) =AddReturn($barcode, $data->{homebranch});
                    if ($doreturn){
                        push @errorloop, {'barcode'=>$barcode,'ERR_ONLOAN_RET'=>1}
                    } else {
                        push @errorloop, {'barcode'=>$barcode,'ERR_ONLOAN_NOT_RET'=>1}
                    }
                }
            } else {
                push @errorloop, {'barcode'=>$barcode,'ERR_BARCODE'=>1};
            }
        }
    }
    $qonloan->finish;
    $qwthdrawn->finish;
    $template->param(date=>format_date($date),Number=>$count);
# 	$template->param(errorfile=>$errorfile) if ($errorfile);
    $template->param(errorloop=>\@errorloop) if (@errorloop);
}
#if we want to compare the results to a list of barcodes, or we have no barcode file
if ( ! ($uploadbarcodes && length($uploadbarcodes)>0 ) || ( $input->param('compareinv2barcd') eq 'on' && length($uploadbarcodes)>0) ) {
    if ($markseen) {
        foreach ($input->param) {
            /SEEN-(.+)/ and &ModDateLastSeen($1);
        }
    }
    if ($markseen or $op) {
        $res = GetItemsForInventory( $minlocation, $maxlocation, $location, $itemtype, $ignoreissued, $datelastseen, $branchcode, $branch, $offset, $pagesize, $staton );
        $template->param(loop =>$res,
                        nextoffset => ($offset+$pagesize),
                        prevoffset => ($offset?$offset-$pagesize:0),
                        );
    }
    if ( defined $input->param('compareinv2barcd') && ( ( $input->param('compareinv2barcd') eq 'on' ) && ( scalar @brcditems != scalar @$res ) ) && length($uploadbarcodes) > 0 ){
        if ( scalar @brcditems > scalar @$res ){
            for my $brcditem (@brcditems) {
                if (! grep( $_->{barcode} =~ /$brcditem->{barcode}/ , @$res) ){
                    $brcditem->{notfoundkoha} = 1;
                    push @$res, $brcditem;
                }
            }
        } else {
            my @notfound;
            for my $item (@$res) {
                if ( ! grep( $_->{barcode} =~ /$item->{barcode}/ , @brcditems) ){
                    $item->{notfoundbarcode} = 1;
                    push @notfound, $item;
                }
            }
            $res = [@$res, @notfound];
        }
    }
}

if (defined $input->param('CSVexport') && $input->param('CSVexport') eq 'on'){
    eval {use Text::CSV};
    my $csv = Text::CSV->new or
            die Text::CSV->error_diag ();
    print $input->header(
        -type       => 'text/csv',
        -attachment => 'inventory.csv',
    );
    for my $re (@$res){
        my @line;
        for my $key (keys %$re) {
            push @line, $re->{$key};
        }
        $csv->combine(@line);
        print $csv->string, "\n";
    }
    exit;
}

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