#!/usr/bin/perl

# $Id$

# Copyright 2000-2002 Katipo Communications
#
# 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

use strict;
use C4::Auth;
use CGI;
use C4::Context;
use HTML::Template;
use C4::Search;
use C4::Output;
use C4::Koha;
use C4::Interface::CGI::Output;
use C4::Circulation::Circ2;
use Date::Manip;

=head1 NAME

plugin that shows a stats on borrowers

=head1 DESCRIPTION


=over2

=cut

my $input = new CGI;
my $do_it=$input->param('do_it');
my $fullreportname = "reports/catalogue_out.tmpl";
my $limit = $input->param("Limit");
my $column = $input->param("Criteria");
my @filters = $input->param("Filter");
my $output = $input->param("output");
my $basename = $input->param("basename");
my $mime = $input->param("MIME");
my $del = $input->param("sep");
#warn "calcul : ".$calc;
my ($template, $borrowernumber, $cookie)
	= get_template_and_user({template_name => $fullreportname,
				query => $input,
				type => "intranet",
				authnotrequired => 0,
				flagsrequired => {editcatalogue => 1},
				debug => 1,
				});
$template->param(do_it => $do_it);
if ($do_it) {
# Displaying results
	my $results = calculate($limit, $column, \@filters);
	if ($output eq "screen"){
# Printing results to screen
		$template->param(mainloop => $results);
		output_html_with_http_headers $input, $cookie, $template->output;
		exit(1);
	} else {
# Printing to a csv file
		print $input->header(-type => 'application/vnd.sun.xml.calc',
			-attachment=>"$basename.csv",
			-filename=>"$basename.csv" );
		my $cols = @$results[0]->{loopcol};
		my $lines = @$results[0]->{looprow};
		my $sep;
		$sep =C4::Context->preference("delimiter");
# header top-right
		print "num /". @$results[0]->{column} .$sep;
# Other header
		foreach my $col ( @$cols ) {
			print $col->{coltitle}.$sep;
		}
		print "Total\n";
# Table
		foreach my $line ( @$lines ) {
			my $x = $line->{loopcell};
			print $line->{rowtitle}.$sep;
			foreach my $cell (@$x) {
				print $cell->{value}.$sep;
			}
			print $line->{totalrow};
 			print "\n";
	 	}
# footer
		print "TOTAL";
		$cols = @$results[0]->{loopfooter};
		foreach my $col ( @$cols ) {
			print $sep.$col->{totalcol};
		}
		print $sep.@$results[0]->{total};
		exit(1);
	}
# Displaying choices
} else {
	my $dbh = C4::Context->dbh;
	my @values;
	my %labels;
	my %select;
	my $req;
	
	my @mime = ( C4::Context->preference("MIME") );
#	foreach my $mime (@mime){
#		warn "".$mime;
#	}
	
	my $CGIextChoice=CGI::scrolling_list(
				-name     => 'MIME',
				-id       => 'MIME',
				-values   => \@mime,
				-size     => 1,
				-multiple => 0 );
	
	my @dels = ( C4::Context->preference("delimiter") );
	my $CGIsepChoice=CGI::scrolling_list(
				-name     => 'sep',
				-id       => 'sep',
				-values   => \@dels,
				-size     => 1,
				-multiple => 0 );
	
	$template->param(
					CGIextChoice => $CGIextChoice,
					CGIsepChoice => $CGIsepChoice
					);
output_html_with_http_headers $input, $cookie, $template->output;
}




sub calculate {
	my ($line, $column, $filters) = @_;
	my @mainloop;
	my @loopfooter;
	my @loopcol;
	my @loopline;
	my @looprow;
	my %globalline;
	my $grantotal =0;
# extract parameters
	my $dbh = C4::Context->dbh;

# Filters
# Checking filters
#
	my @loopfilter;
	for (my $i=0;$i<=6;$i++) {
		my %cell;
		if ( @$filters[$i] ) {
			if (($i==1) and (@$filters[$i-1])) {
				$cell{err} = 1 if (@$filters[$i]<@$filters[$i-1]) ;
			}
			$cell{filter} .= @$filters[$i];
			$cell{crit} .="Branch" if ($i==0);
			$cell{crit} .="Doc Type" if ($i==1);
			push @loopfilter, \%cell;
		}
	}
	my $colfield;
	my $colorder;
	if ($column){
		$column = "issues.".$column if (($column=~/branchcode/) or ($column=~/timestamp/));
		$column = "biblioitems.".$column if $column=~/itemtype/;
		$column = "borrowers.".$column if $column=~/categorycode/;
		my @colfilter ;
		$colfilter[0] = @$filters[0] if ($column =~ /branch/ )  ;
		$colfilter[0] = @$filters[1] if ($column =~ /itemtype/ )  ;
												
	# loop cols.
		$colfield .= $column;
		$colorder .= $column;
		
		my $strsth2;
		$strsth2 .= "select distinctrow $colfield FROM `issues`,borrowers,biblioitems LEFT JOIN items ON (biblioitems.biblioitemnumber=items.biblioitemnumber) WHERE issues.itemnumber=items.itemnumber AND issues.borrowernumber=borrowers.borrowernumber and returndate is not null";
		if ($colfilter[0]) {
			$colfilter[0] =~ s/\*/%/g;
			$strsth2 .= " and $column LIKE '$colfilter[0]' " ;
		}
		$strsth2 .=" group by $colfield";
		$strsth2 .=" order by $colorder";
		warn "". $strsth2;
		
		my $sth2 = $dbh->prepare( $strsth2 );
		$sth2->execute;

		
	
		while (my ($celvalue) = $sth2->fetchrow) {
			my %cell;
	#		my %ft;
	#		warn "coltitle :".$celvalue;
			$cell{coltitle} = $celvalue;
	#		$ft{totalcol} = 0;
			push @loopcol, \%cell;
		}
	#	warn "fin des titres colonnes";
	}
	
	my $i=0;
#	my @totalcol;
	my $hilighted=-1;
	
	#Initialization of cell values.....
	my @table;
	
#	warn "init table";
	for (my $i=1;$i<=$line;$i++) {
		foreach my $col ( @loopcol ) {
#			warn " init table : $row->{rowtitle} / $col->{coltitle} ";
			$table[$i]->{($col->{coltitle})?$col->{coltitle}:"Global"}=0;
		}
	}


# preparing calculation
	my $strcalc ;
	
# Processing average loanperiods
	$strcalc .= "SELECT CONCAT( items.itemnumber, \" \",biblioitems.biblioitemnumber)";
	$strcalc .= " , $colfield " if ($colfield);
	$strcalc .= " FROM (items LEFT JOIN biblioitems ON biblioitems.biblioitemnumber = items.biblioitemnumber)  LEFT JOIN issues ON  issues.itemnumber=items.itemnumber WHERE issues.itemnumber is null";
#  	@$filters[0]=~ s/\*/%/g if (@$filters[0]);
#  	$strcalc .= " AND issues.timestamp <= '" . @$filters[0] ."'" if ( @$filters[0] );
#  	@$filters[1]=~ s/\*/%/g if (@$filters[1]);
#  	$strcalc .= " AND issues.timestamp >= '" . @$filters[1] ."'" if ( @$filters[1] );
# 	@$filters[2]=~ s/\*/%/g if (@$filters[2]);
# 	$strcalc .= " AND issues.returndate <= '" . @$filters[2] ."'" if ( @$filters[2] );
# 	@$filters[3]=~ s/\*/%/g if (@$filters[3]);
# 	$strcalc .= " AND issues.returndate >= '" . @$filters[3] ."'" if ( @$filters[3] );
 	@$filters[0]=~ s/\*/%/g if (@$filters[0]);
 	$strcalc .= " AND items.homebranch like '" . @$filters[0] ."'" if ( @$filters[0] );
	@$filters[1]=~ s/\*/%/g if (@$filters[1]);
	$strcalc .= " AND biblioitems.itemtype like '" . @$filters[1] ."'" if ( @$filters[1] );
	
	$strcalc .= " group by items.itemnumber";
	$strcalc .= ", $colfield" if ($column);
	$strcalc .= " order by $colfield " if ($colfield);
	my $max;
	if (@loopcol) {
		$max = $line*@loopcol;
	} else { $max=$line;}
	$strcalc .= " LIMIT 0,$max" if ($line);
	warn "SQL :". $strcalc;
	
	my $dbcalc = $dbh->prepare($strcalc);
	$dbcalc->execute;
# 	warn "filling table";
	my $previous_col;
	my $i=1;
	while (my  @data = $dbcalc->fetchrow) {
		my ($row, $col )=@data;
		$col = "zzEMPTY" if ($col eq undef);
		$i=1 if (($previous_col) and not($col eq $previous_col));
		$table[$i]->{$col}=$row;
#		warn " ".$i." ".$col. " ".$row;
		$i++;
		$previous_col=$col;
	}
	
	push @loopcol,{coltitle => "Global"} if not($column);
	
	my $max =(($line)?$line:@table);
 	for ($i=1; $i<$max;$i++) {
 		my @loopcell;
 		#@loopcol ensures the order for columns is common with column titles
 		# and the number matches the number of columns
 		my $colcount=0;
 		foreach my $col ( @loopcol ) {
 			my $value;
 			if (@loopcol){
 				$value =$table[$i]->{(($col->{coltitle} eq "NULL") or ($col->{coltitle} eq "Global"))?"zzEMPTY":$col->{coltitle}};
 			} else {
 				$value =$table[$i]->{"zzEMPTY"};
 			}
			push @loopcell, {value => $value} ;
		}
		push @looprow,{ 'rowtitle' => $i ,
						'loopcell' => \@loopcell,
						'hilighted' => ($hilighted >0),
					};
		$hilighted = -$hilighted;
	}
	
			

	# the header of the table
	$globalline{loopfilter}=\@loopfilter;
	# the core of the table
	$globalline{looprow} = \@looprow;
	$globalline{loopcol} = \@loopcol;
# 	# the foot (totals by borrower type)
	$globalline{loopfooter} = \@loopfooter;
	$globalline{total}= $grantotal;
	$globalline{line} = $line;
	$globalline{column} = $column;
	push @mainloop,\%globalline;
	return \@mainloop;
}

1;