#!/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/cat_issues_top.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,
						limit => $limit);
		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;
	
	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];
			$cell{crit} .="Issue From" if ($i==0);
			$cell{crit} .="Issue To" if ($i==1);
			$cell{crit} .="Return From" if ($i==2);
			$cell{crit} .="Return To" if ($i==3);
			$cell{crit} .="Branch" if ($i==4);
			$cell{crit} .="Doc Type" if ($i==5);
			$cell{crit} .="Bor Cat" if ($i==6);
			$cell{crit} .="Day" if ($i==7);
			$cell{crit} .="Month" if ($i==8);
			$cell{crit} .="Year" if ($i==9);
			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 =~ /timestamp/ )  ;
		$colfilter[1] = @$filters[1] if ($column =~ /timestamp/ )  ;
		$colfilter[0] = @$filters[2] if ($column =~ /returndate/ )  ;
		$colfilter[1] = @$filters[3] if ($column =~ /returndate/ )  ;
		$colfilter[0] = @$filters[4] if ($column =~ /branch/ )  ;
		$colfilter[0] = @$filters[5] if ($column =~ /itemtype/ )  ;
		$colfilter[0] = @$filters[6] if ($column =~ /category/ )  ;
	# 	$colfilter[0] = @$filters[11] if ($column =~ /sort2/ ) ;
		$colfilter[0] = @$filters[7] if ($column =~ /timestamp/ ) ;
		$colfilter[0] = @$filters[8] if ($column =~ /timestamp/ ) ;
		$colfilter[0] = @$filters[9] if ($column =~ /timestamp/ ) ;
	#warn "filtre col ".$colfilter[0]." ".$colfilter[1];
												
	# loop cols.
		if ($column eq "Day") {
			#Display by day
			$column = "issues.timestamp";
			$colfield .="dayname($column)";  
			$colorder .="weekday($column)";
		} elsif ($column eq "Month") {
			#Display by Month
			$column = "issues.timestamp";
			$colfield .="monthname($column)";  
			$colorder .="month($column)";  
		} elsif ($column eq "Year") {
			#Display by Year
			$column = "issues.timestamp";
			$colfield .="Year($column)";
			$colorder .= $column;
		} else {
			$colfield .= $column;
			$colorder .= $column;
		}  
		
		my $strsth2;
		$strsth2 .= "select distinctrow $colfield FROM `issues`,borrowers,biblioitems LEFT JOIN items ON (biblioitems.biblioitemnumber=items.biblioitemnumber) WHERE issues.itemnumber=items.itemnumber AND issues.borrowernumber=borrowers.borrowernumber and returndate is not null";
		if (($column=~/timestamp/) or ($column=~/returndate/)){
			if ($colfilter[1] and ($colfilter[0])){
				$strsth2 .= " and $column between '$colfilter[0]' and '$colfilter[1]' " ;
			} elsif ($colfilter[1]) {
					$strsth2 .= " and $column < '$colfilter[1]' " ;
			} elsif ($colfilter[0]) {
				$strsth2 .= " and $column > '$colfilter[0]' " ;
			}
		} elsif ($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( $strsth2 );
		if (( @colfilter ) and ($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";
	for (my $i=1;$i<=$line;$i++) {
		foreach my $col ( @loopcol ) {
#			warn " init table : $row->{rowtitle} / $col->{coltitle} ";
			$table[$i]->{($col->{coltitle})?$col->{coltitle}:"total"}->{'name'}=0;
		}
	}


# preparing calculation
	my $strcalc ;
	
# Processing average loanperiods
	$strcalc .= "SELECT DISTINCT biblio.title, COUNT(biblio.biblionumber) AS RANK, biblio.biblionumber AS ID";
	$strcalc .= " , $colfield " if ($colfield);
	$strcalc .= " FROM `issues`,borrowers,(items LEFT JOIN biblioitems ON biblioitems.biblioitemnumber=items.biblioitemnumber) LEFT JOIN biblio ON (biblio.biblionumber=items.biblionumber) WHERE issues.itemnumber=items.itemnumber AND issues.borrowernumber=borrowers.borrowernumber and returndate is not 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[4]=~ s/\*/%/g if (@$filters[4]);
	$strcalc .= " AND issues.branchcode like '" . @$filters[4] ."'" if ( @$filters[4] );
	@$filters[5]=~ s/\*/%/g if (@$filters[5]);
	$strcalc .= " AND biblioitems.itemtype like '" . @$filters[5] ."'" if ( @$filters[5] );
	@$filters[6]=~ s/\*/%/g if (@$filters[6]);
	$strcalc .= " AND borrowers.categorycode like '" . @$filters[6] ."'" if ( @$filters[6] );
	@$filters[7]=~ s/\*/%/g if (@$filters[7]);
	$strcalc .= " AND dayname(issues.timestamp) like '" . @$filters[7]."'" if (@$filters[7]);
	@$filters[8]=~ s/\*/%/g if (@$filters[8]);
	$strcalc .= " AND monthname(issues.timestamp) like '" . @$filters[8]."'" if (@$filters[8]);
	@$filters[9]=~ s/\*/%/g if (@$filters[9]);
	$strcalc .= " AND year(issues.timestamp) like '" . @$filters[9] ."'" if ( @$filters[9] );
	
	$strcalc .= " group by biblio.biblionumber";
	$strcalc .= ", $colfield" if ($column);
	$strcalc .= " order by ";
	$strcalc .= "$colfield, " if ($colfield);
	$strcalc .= "RANK DESC ";
	my $max;
	if (@loopcol) {
		$max = $line*@loopcol;
	} else { $max=$line;}
	$strcalc .= " LIMIT 0,$max";
	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, $rank, $id, $col )=@data;
		$col = "zzEMPTY" if ($col eq undef);
		$i=1 if (($previous_col) and not($col eq $previous_col));
		$table[$i]->{$col}->{'name'}=$row;
		$table[$i]->{$col}->{'count'}=$rank;
		$table[$i]->{$col}->{'link'}=$id;
#		warn " ".$i." ".$col. " ".$row;
		$i++;
		$previous_col=$col;
	}
	
	push @loopcol,{coltitle => "Global"} if not($column);
	
	for ($i=1; $i<=$line;$i++) {
		my @loopcell;
		warn " $i";
		#@loopcol ensures the order for columns is common with column titles
		# and the number matches the number of columns
		my $colcount=0;
		foreach my $col ( @loopcol ) {
#			warn " colonne :$col->{coltitle}";
			my $value;
			my $count=0;
			my $link;
			if (@loopcol){
				$value =$table[$i]->{(($col->{coltitle} eq "NULL") or ($col->{coltitle} eq "Global"))?"zzEMPTY":$col->{coltitle}}->{'name'};
				$count =$table[$i]->{(($col->{coltitle} eq "NULL") or ($col->{coltitle} eq "Global"))?"zzEMPTY":$col->{coltitle}}->{'count'};
				$link =$table[$i]->{(($col->{coltitle} eq "NULL") or ($col->{coltitle} eq "Global"))?"zzEMPTY":$col->{coltitle}}->{'link'};
			} else {
				$value =$table[$i]->{"zzEMPTY"}->{'name'};
				$count =$table[$i]->{"zzEMPTY"}->{'count'};
				$link =$table[$i]->{"zzEMPTY"}->{'link'};
			}
#			warn " ".$i ." value:$value count:$count reference:$link";
			push @loopcell, {value => $value, count =>$count, reference => $link} ;
		}
		#warn "row : $row colcount:$colcount";
		#my $total = $table[$i]->{totalrow}/$colcount if ($colcount>0);
		push @looprow,{ 'rowtitle' => $i ,
						'loopcell' => \@loopcell,
						'hilighted' => ($hilighted >0),
						#'totalrow' => ($total)?sprintf("%.2f",$total):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;