#!/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;

=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/borrowers_stats.tmpl";
my $line = $input->param("Line");
my $column = $input->param("Column");
my @filters = $input->param("Filter");
my $digits = $input->param("digits");
my $borstat = $input->param("status");
my $output = $input->param("output");
my $basename = $input->param("basename");
my $mime = $input->param("MIME");
my $del = $input->param("sep");

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) {
	my $results = calculate($line, $column, $digits, $borstat, \@filters);
	if ($output eq "screen"){
		$template->param(mainloop => $results);
		output_html_with_http_headers $input, $cookie, $template->output;
		exit(1);
	} else {
		print $input->header(-type => 'application/vnd.sun.xml.calc',
							 -name=>"$basename.csv",
							 -attachment=>"$basename.csv");
		my $cols = @$results[0]->{loopcol};
		my $lines = @$results[0]->{looprow};
		my $sep;
		$sep =C4::Context->preference("delimiter");
		print @$results[0]->{line} ."/". @$results[0]->{column} .$sep;
		foreach my $col ( @$cols ) {
			print $col->{coltitle}.$sep;
		}
		print "Total\n";
		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";
	 	}
		print "TOTAL";
		$cols = @$results[0]->{loopfooter};
		foreach my $col ( @$cols ) {
			print $sep.$col->{totalcol};
		}
		print $sep.@$results[0]->{total};
		exit(1);
	}
} else {
	my $dbh = C4::Context->dbh;
	my @values;
	my %labels;
	my $req;
	$req = $dbh->prepare( "select categorycode, description from categories order by description");
	$req->execute;
	my %select_catcode;
	my @select_catcode;
	push @select_catcode,"";
	$select_catcode{""} = "";
	while (my ($catcode, $description) =$req->fetchrow) {
		push @select_catcode, $catcode;
		$select_catcode{$catcode} = $description
	}
	my $CGICatCode=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select_catcode,
				-labels   => \%select_catcode,
				-size     => 1,
				-multiple => 0 );
	
	$req = $dbh->prepare( "select distinctrow sort1 from borrowers order by sort1");
	$req->execute;
	my @select_sort1;
	push @select_sort1,"";
	my $hassort1;
	while (my ($value) =$req->fetchrow) {
		if ($value) {
			$hassort1=1;
			push @select_sort1, $value;
		}
	}
	my $CGIsort1=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select_sort1,
				-size     => 1,
				-multiple => 0 );
	
	$req = $dbh->prepare( "select distinctrow sort2 from borrowers order by sort2");
	$req->execute;
	my @select_sort2;
	push @select_sort2,"";
	my $hassort2;
	while (my ($value) =$req->fetchrow) {
		if ($value) {
			$hassort2 = 1;
			push @select_sort2, $value;
		}
	}
	my $CGIsort2=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select_sort2,
				-size     => 1,
				-multiple => 0 );
	
	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(CGICatcode => $CGICatCode,
					CGISort1 => $CGIsort1,
					hassort1 => $hassort1,
					CGISort2 => $CGIsort2,
					hassort2 => $hassort2,
					CGIextChoice => $CGIextChoice,
					CGIsepChoice => $CGIsepChoice
					);

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



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

# Filters
 	my $linefilter = "";
#	warn "filtres ".@filters[0];
#	warn "filtres ".@filters[1];
#	warn "filtres ".@filters[2];
#	warn "filtres ".@filters[3];
	
 	$linefilter = @$filters[0] if ($line =~ /categorycode/ )  ;
 	$linefilter = @$filters[1] if ($line =~ /zipcode/ )  ;
 	$linefilter = @$filters[2] if ($line =~ /sort1/ ) ;
 	$linefilter = @$filters[3] if ($line =~ /sort2/ ) ;
# 
 	my $colfilter = "";
 	$colfilter = @$filters[0] if ($column =~ /categorycode/);
 	$colfilter = @$filters[1] if ($column =~ /zipcode/);
 	$colfilter = @$filters[2] if ($column =~ /sort1/);
 	$colfilter = @$filters[3] if ($column =~ /sort2/);

	my @loopfilter;
	for (my $i=0;$i<=3;$i++) {
		my %cell;
		if ( @$filters[$i] ) {
			$cell{filter} .= @$filters[$i];
			$cell{crit} .="Cat Code " if ($i==0);
			$cell{crit} .="Zip Code" if ($i==1);
			$cell{crit} .="Sort1" if ($i==2);
			$cell{crit} .="Sort2" if ($i==3);
			push @loopfilter, \%cell;
		}
	}
	if ($status) {
		push @loopfilter,{crit=>"Status",filter=>$status}
	}
# 1st, loop rows.
	my $linefield;
	if (($line =~/zipcode/) and ($digits)) {
		$linefield .="left($line,$digits)";
	} else{
		$linefield .= $line;
	}
	
	my $strsth;
	$strsth .= "select distinctrow $linefield from borrowers where $line is not null ";
	$linefilter =~ s/\*/%/g;
	if ( $linefilter ) {
		$strsth .= " and $linefield LIKE ? " ;
	}
	$strsth .= " and $status='1' " if ($status);
	$strsth .=" order by $linefield";
#	warn "". $strsth;
	
	my $sth = $dbh->prepare( $strsth );
	if ( $linefilter ) {
		$sth->execute($linefilter);
	} else {
		$sth->execute;
	}
 	while ( my ($celvalue) = $sth->fetchrow) {
 		my %cell;
		if ($celvalue) {
			$cell{rowtitle} = $celvalue;
#		} else {
#			$cell{rowtitle} = "";
		}
 		$cell{totalrow} = 0;
		push @loopline, \%cell;
 	}

# 2nd, loop cols.
	my $colfield;
	if (($column =~/zipcode/) and ($digits)) {
		$colfield .= "left($column,$digits)";
	} else{
		$colfield .= $column;
	}
	my $strsth2;
	$colfilter =~ s/\*/%/g;
	$strsth2 .= "select distinctrow $colfield from borrowers where $column is not null";
	if ( $colfilter ) {
		$strsth2 .= " and $colfield LIKE ? ";
	} 
	$strsth2 .= " and $status='1' " if ($status);
	$strsth2 .= " order by $colfield";
#	warn "". $strsth2;
	my $sth2 = $dbh->prepare( $strsth2 );
	if ($colfilter) {
		$sth2->execute($colfilter);
	} else {
		$sth2->execute;
	}
 	while (my ($celvalue) = $sth2->fetchrow) {
 		my %cell;
		my %ft;
		if ($celvalue) {
			$cell{coltitle} = $celvalue;
		}
		push @loopcol, \%cell;
 	}
	

	my $i=0;
	my @totalcol;
	my $hilighted=-1;
	
	#Initialization of cell values.....
	my %table;
#	warn "init table";
	foreach my $row ( @loopline ) {
		foreach my $col ( @loopcol ) {
#			warn " init table : $row->{rowtitle} / $col->{coltitle} ";
			$table{$row->{rowtitle}}->{$col->{coltitle}}=0;
		}
		$table{$row->{rowtitle}}->{totalrow}=0;
	}

# preparing calculation
	my $strcalc .= "SELECT $linefield, $colfield, count( * ) FROM borrowers WHERE 1 ";
	@$filters[0]=~ s/\*/%/g if (@$filters[0]);
	$strcalc .= " AND categorycode like '" . @$filters[0] ."'" if ( @$filters[0] );
	@$filters[1]=~ s/\*/%/g if (@$filters[1]);
	$strcalc .= " AND zipcode like '" . @$filters[1] ."'" if ( @$filters[1] );
	@$filters[2]=~ s/\*/%/g if (@$filters[2]);
	$strcalc .= " AND sort1 like '" . @$filters[2] ."'" if ( @$filters[2] );
	@$filters[3]=~ s/\*/%/g if (@$filters[3]);
	$strcalc .= " AND sort2 like '" . @$filters[3] ."'" if ( @$filters[3] );
	$strcalc .= " AND $status='1' " if ($status);
	$strcalc .= " group by $linefield, $colfield";
#	warn "". $strcalc;
	my $dbcalc = $dbh->prepare($strcalc);
	$dbcalc->execute;
#	warn "filling table";
	
	my $emptycol; 
	while (my ($row, $col, $value) = $dbcalc->fetchrow) {
#		warn "filling table $row / $col / $value ";
		$emptycol = 1 if ($col eq undef);
		$col = "zzEMPTY" if ($col eq undef);
		$row = "zzEMPTY" if ($row eq undef);
		
		$table{$row}->{$col}+=$value;
		$table{$row}->{totalrow}+=$value;
		$grantotal += $value;
	}
	
 	push @loopcol,{coltitle => "NULL"} if ($emptycol);
	
	foreach my $row ( sort keys %table ) {
		my @loopcell;
		#@loopcol ensures the order for columns is common with column titles
		# and the number matches the number of columns
		foreach my $col ( @loopcol ) {
			my $value =$table{$row}->{($col->{coltitle} eq "NULL")?"zzEMPTY":$col->{coltitle}};
			push @loopcell, {value => $value  } ;
		}
		push @looprow,{ 'rowtitle' => ($row eq "zzEMPTY")?"NULL":$row,
						'loopcell' => \@loopcell,
						'hilighted' => ($hilighted >0),
						'totalrow' => $table{$row}->{totalrow}
					};
		$hilighted = -$hilighted;
	}
	
	foreach my $col ( @loopcol ) {
		my $total=0;
		foreach my $row ( @looprow ) {
			$total += $table{($row->{rowtitle} eq "NULL")?"zzEMPTY":$row->{rowtitle}}->{($col->{coltitle} eq "NULL")?"zzEMPTY":$col->{coltitle}};
#			warn "value added ".$table{$row->{rowtitle}}->{$col->{coltitle}}. "for line ".$row->{rowtitle};
		}
#		warn "summ for column ".$col->{coltitle}."  = ".$total;
		push @loopfooter, {'totalcol' => $total};
	}
			

	# 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;