#!/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/issues_stats.tmpl";
my $line = $input->param("Line");
my $column = $input->param("Column");
my @filters = $input->param("Filter");
my $podsp = $input->param("DisplayBy");
my $type = $input->param("PeriodTypeSel");
my $daysel = $input->param("PeriodDaySel");
my $monthsel = $input->param("PeriodMonthSel");
my $calc = $input->param("Cellvalue");
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 $results = calculate($line, $column, $podsp, $type, $daysel, $monthsel, $calc, \@filters);
	if ($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;
		$sep =C4::Context->preference("delimiter");
# header top-right
		print @$results[0]->{line} ."/". @$results[0]->{column} .$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;
	$req = $dbh->prepare("select distinctrow categorycode,description from categories order by description");
	$req->execute;
	my @select;
	push @select,"";
	$select{""}="";
	while (my ($value, $desc) =$req->fetchrow) {
		push @select, $value;
		$select{$value}=$desc;
	}
	my $CGIBorCat=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select,
				-labels   => \%select,
				-size     => 1,
				-multiple => 0 );
	
	$req = $dbh->prepare( "select distinctrow itemtype,description from itemtypes order by description");
	$req->execute;
	undef @select;
	undef %select;
	push @select,"";
	$select{""}="";
	while (my ($value,$desc) =$req->fetchrow) {
		push @select, $value;
		$select{$value}=$desc;
	}
	my $CGIItemTypes=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select,
				-labels    => \%select,
				-size     => 1,
				-multiple => 0 );
	
	$req = $dbh->prepare("select distinctrow sort1 from borrowers where sort1 is not null order by sort1");
	$req->execute;
	undef @select;
	push @select,"";
	my $hassort1;
	while (my ($value) =$req->fetchrow) {
		$hassort1 =1 if ($value);
		push @select, $value;
	}
	my $branches=getbranches();
	my @select_branch;
	my %select_branches;
	push @select_branch,"";
	$select_branches{""} = "";
	foreach my $branch (keys %$branches) {
		push @select_branch, $branch;
		$select_branches{$branch} = $branches->{$branch}->{'branchname'};
	}
	my $CGIBranch=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select_branch,
				-labels   => \%select_branches,
				-size     => 1,
				-multiple => 0 );
	
	my $CGISort1=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select,
				-size     => 1,
				-multiple => 0 );
	
	$req = $dbh->prepare("select distinctrow sort2 from borrowers where sort2 is not null order by sort2");
	$req->execute;
	undef @select;
	push @select,"";
	my $hassort2;
	my $hglghtsort2;
	while (my ($value) =$req->fetchrow) {
		$hassort2 =1 if ($value);
		$hglghtsort2= !($hassort1);
		push @select, $value;
	}
	my $CGISort2=CGI::scrolling_list( -name     => 'Filter',
				-id => 'Filter',
				-values   => \@select,
				-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(
					CGIBorCat => $CGIBorCat,
					CGIItemType => $CGIItemTypes,
					CGIBranch => $CGIBranch,
					hassort1=> $hassort1,
					hassort2=> $hassort2,
					HlghtSort2 => $hglghtsort2,
					CGISort1 => $CGISort1,
					CGISort2 => $CGISort2,
					CGIextChoice => $CGIextChoice,
					CGIsepChoice => $CGIsepChoice
					);
output_html_with_http_headers $input, $cookie, $template->output;
}




sub calculate {
	my ($line, $column, $dsp, $type,$daysel,$monthsel ,$process, $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];
			$cell{crit} .="Period From" if ($i==0);
			$cell{crit} .="Period To" if ($i==1);
			$cell{crit} .="Borrower Cat" if ($i==2);
			$cell{crit} .="Doc Type" if ($i==3);
			$cell{crit} .="Branch" if ($i==4);
			$cell{crit} .="Sort1" if ($i==5);
			$cell{crit} .="Sort2" if ($i==6);
			push @loopfilter, \%cell;
		}
	}
	push @loopfilter,{crit=>"Issue|Return ",filter=>$type};
	push @loopfilter,{crit=>"Display by ",filter=>$dsp} if ($dsp);
	push @loopfilter,{crit=>"Select Day ",filter=>$daysel} if ($daysel);
	push @loopfilter,{crit=>"Select Month ",filter=>$daysel} if ($monthsel);
	
	
	my @linefilter;
#	warn "filtres ".@filters[0];
#	warn "filtres ".@filters[1];
#	warn "filtres ".@filters[2];
#	warn "filtres ".@filters[3];
	
 	$linefilter[0] = @$filters[0] if ($line =~ /datetime/ )  ;
 	$linefilter[1] = @$filters[1] if ($line =~ /datetime/ )  ;
 	$linefilter[0] = @$filters[2] if ($line =~ /category/ )  ;
 	$linefilter[0] = @$filters[3] if ($line =~ /itemtype/ )  ;
 	$linefilter[0] = @$filters[4] if ($line =~ /branch/ )  ;
# 	$linefilter[0] = @$filters[11] if ($line =~ /sort2/ ) ;
 	$linefilter[0] = @$filters[5] if ($line =~ /sort1/ ) ;
 	$linefilter[0] = @$filters[6] if ($line =~ /sort2/ ) ;
#warn "filtre lignes".$linefilter[0]." ".$linefilter[1];
# 
 	my @colfilter ;
 	$colfilter[0] = @$filters[0] if ($column =~ /datetime/) ;
 	$colfilter[1] = @$filters[1] if ($column =~ /datetime/) ;
 	$colfilter[0] = @$filters[2] if ($column =~ /category/) ;
 	$colfilter[0] = @$filters[3] if ($column =~ /itemtype/) ;
 	$colfilter[0] = @$filters[4] if ($column =~ /branch/ )  ;
 	$colfilter[0] = @$filters[5] if ($column =~ /sort1/  )  ;
 	$colfilter[0] = @$filters[6] if ($column =~ /sort2/  )  ;
#warn "filtre col ".$colfilter[0]." ".$colfilter[1];
                                              
# 1st, loop rows.                             
	my $linefield;                               
	if (($line =~/datetime/) and ($dsp == 1)) {
		#Display by day
		$linefield .="dayname($line)";  
	} elsif (($line=~/datetime/) and ($dsp == 2)) {
		#Display by Month
		$linefield .="monthname($line)";  
	} elsif (($line=~/datetime/) and ($dsp == 3)) {
		#Display by Year
		$linefield .="Year($line)";
	} elsif ($line=~/datetime/) {
		$linefield .= 'date_format(`datetime`,"%Y-%m-%d")';
	} else {
		$linefield .= $line;
	}  
	
 	my $strsth;
 	$strsth .= "select distinctrow $linefield from statistics, borrowers where (statistics.borrowernumber=borrowers.borrowernumber) and $line is not null ";
	
	if ($line=~/datetime/) {
		if ($linefilter[1] and ($linefilter[0])){
			$strsth .= " and $line between ? and ? " ;
		} elsif ($linefilter[1]) {
				$strsth .= " and $line < ? " ;
		} elsif ($linefilter[0]) {
			$strsth .= " and $line > ? " ;
		}
		$strsth .= " and type ='".$type."' " if $type;
		$strsth .= " and dayname(datetime) ='". $daysel ."' " if $daysel;
		$strsth .= " and monthname(datetime) ='". $monthsel ."' " if $monthsel;
	} elsif ($linefilter[0]) {
		$linefilter[0] =~ s/\*/%/g;
 		$strsth .= " and $line LIKE ? " ;
 	}
	$strsth .=" group by $linefield";
	$strsth .=" order by $linefield";
#	warn "". $strsth;
	
	my $sth = $dbh->prepare( $strsth );
	if (( @linefilter ) and ($linefilter[1])){
		$sth->execute("'".$linefilter[0]."'","'".$linefilter[1]."'");
	} elsif ($linefilter[0]) {
		$sth->execute($linefilter[0]);
	} 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 =~/datetime/) and ($dsp == 1)) {
		#Display by day
		$colfield .="dayname($column)";  
	} elsif (($column=~/datetime/) and ($dsp == 2)) {
		#Display by Month
		$colfield .="monthname($column)";  
	} elsif (($column=~/datetime/) and ($dsp == 3)) {
		#Display by Year
		$colfield .="Year($column)";
	} elsif ($column=~/datetime/) {
		$colfield .='date_format(`datetime`,"%Y-%m-%d")';	
	} else {
		$colfield .= $column;
	}  
	
 	my $strsth2;
 	$strsth2 .= "select distinctrow $colfield from statistics, borrowers where (statistics.borrowernumber=borrowers.borrowernumber) and $column is not null ";
	
	if ($column=~/datetime/){
		if (($colfilter[1]) and ($colfilter[0])){
			$strsth2 .= " and $column between ? and ? " ;
		} elsif ($colfilter[1]) {
			$strsth2 .= " and $column < ? " ;
		} elsif ($colfilter[0]) {
			$strsth2 .= " and $column > ? " ;
		}
		$strsth2 .= " and type ='".$type."' " if $type;
		$strsth2 .= " and dayname(datetime) ='". $daysel ."' " if $daysel;
		$strsth2 .= " and monthname(datetime) ='". $monthsel ."' " if $monthsel;
	} elsif ($colfilter[0]) {
		$colfilter[0] =~ s/\*/%/g;
 		$strsth2 .= " and $column LIKE ? " ;
 	}
	$strsth2 .=" group by $colfield";
	$strsth2 .=" order by $colfield";
#	warn "". $strsth2;
	
	my $sth2 = $dbh->prepare( $strsth2 );
	if (( @colfilter ) and ($colfilter[1])){
		$sth2->execute("'".$colfilter[0]."'","'".$colfilter[1]."'");
	} elsif ($colfilter[0]) {
		$sth2->execute($colfilter[0]);
	} else {
		$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";
	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 $strcalc ;
	if ($process ==2) {
	# Processing average loanperiods
		$strcalc .= "SELECT $linefield, $colfield, ";
		$strcalc .= " DATE_SUB(date_due, INTERVAL CAST(issues.renewals AS SIGNED INTEGER) * (CAST(issues.renewals AS SIGNED INTEGER)+1) DAY) AS issuedate, returndate, COUNT(*), date_due, issues.renewals, issuelength FROM `issues`,borrowers,biblioitems LEFT JOIN items ON (biblioitems.biblioitemnumber=items.biblioitemnumber) LEFT JOIN issuingrules ON (issuingrules.branchcode=issues.branchcode AND  issuingrules.itemtype=biblioitems.itemtype AND  issuingrules.categorycode=borrowers.categorycode) WHERE issues.itemnumber=items.itemnumber AND issues.borrowernumber=borrowers.borrowernumber ";
	
		@$filters[0]=~ s/\*/%/g if (@$filters[0]);
		$strcalc .= " AND issues.returndate > '" . @$filters[0] ."'" if ( @$filters[0] );
		@$filters[1]=~ s/\*/%/g if (@$filters[1]);
		$strcalc .= " AND issues.returndate < '" . @$filters[1] ."'" if ( @$filters[1] );
		@$filters[2]=~ s/\*/%/g if (@$filters[2]);
		$strcalc .= " AND borrowers.categorycode like '" . @$filters[2] ."'" if ( @$filters[2] );
		@$filters[3]=~ s/\*/%/g if (@$filters[3]);
		$strcalc .= " AND biblioitems.itemtype like '" . @$filters[3] ."'" if ( @$filters[3] );
		@$filters[4]=~ s/\*/%/g if (@$filters[4]);
		$strcalc .= " AND issues.branchcode like '" . @$filters[4] ."'" if ( @$filters[4] );
		@$filters[5]=~ s/\*/%/g if (@$filters[5]);
		$strcalc .= " AND borrowers.sort1 like '" . @$filters[5] ."'" if ( @$filters[5] );
		@$filters[6]=~ s/\*/%/g if (@$filters[6]);
		$strcalc .= " AND borrowers.sort2 like '" . @$filters[6] ."'" if ( @$filters[6] );
		$strcalc .= " AND dayname(timestamp) like '" . $daysel ."'" if ( $daysel );
		$strcalc .= " AND monthname(timestamp) like '" . $monthsel ."'" if ( $monthsel );
		
		$strcalc .= " group by issuedate, returndate, $linefield, $colfield order by $linefield,$colfield";
		
		my $dbcalc = $dbh->prepare($strcalc);
		$dbcalc->execute;
	# 	warn "filling table";
		my $emptycol;
		my $issues_count; 
		while (my ($row, $col, $issuedate, $returndate) = $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;
	}
	
#	warn "footer processing";
	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};
	
	}else {
		$strcalc .= "SELECT $linefield, $colfield, ";
		$strcalc .= "COUNT( * ) " if ($process ==1);
		if ($process ==3){
			my $rqbookcount = $dbh->prepare("SELECT count(*) FROM items");
			$rqbookcount->execute;
			my ($bookcount) = $rqbookcount->fetchrow;
			$strcalc .= "100*(COUNT(itemnumber))/ $bookcount " ;
		}
		$strcalc .= "FROM statistics,borrowers where (statistics.borrowernumber=borrowers.borrowernumber) ";
	
		@$filters[0]=~ s/\*/%/g if (@$filters[0]);
		$strcalc .= " AND statistics.datetime > '" . @$filters[0] ."'" if ( @$filters[0] );
		@$filters[1]=~ s/\*/%/g if (@$filters[1]);
		$strcalc .= " AND statistics.datetime < '" . @$filters[1] ."'" if ( @$filters[1] );
		@$filters[2]=~ s/\*/%/g if (@$filters[2]);
		$strcalc .= " AND borrowers.categorycode like '" . @$filters[2] ."'" if ( @$filters[2] );
		@$filters[3]=~ s/\*/%/g if (@$filters[3]);
		$strcalc .= " AND statistics.itemtype like '" . @$filters[3] ."'" if ( @$filters[3] );
		@$filters[4]=~ s/\*/%/g if (@$filters[4]);
		$strcalc .= " AND statistics.branch like '" . @$filters[4] ."'" if ( @$filters[4] );
		@$filters[5]=~ s/\*/%/g if (@$filters[5]);
		$strcalc .= " AND borrowers.sort1 like '" . @$filters[5] ."'" if ( @$filters[5] );
		@$filters[6]=~ s/\*/%/g if (@$filters[6]);
		$strcalc .= " AND borrowers.sort2 like '" . @$filters[6] ."'" if ( @$filters[6] );
		$strcalc .= " AND dayname(datetime) like '" . $daysel ."'" if ( $daysel );
		$strcalc .= " AND monthname(datetime) like '" . $monthsel ."'" if ( $monthsel );
		$strcalc .= " AND statistics.type like '" . $type ."'" if ( $type );
		
		$strcalc .= " group by $linefield, $colfield order 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;
	}
	
#	warn "footer processing";
	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;