#!/usr/bin/perl

# 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 CGI;
use C4::Auth;
use C4::Context;
use C4::Branch; # GetBranches
use C4::Koha;
use C4::Dates;
use C4::Acquisition;
use C4::Output;
use C4::Circulation;
use Date::Calc qw(
  Today
  Add_Delta_YM
  );

=head1 NAME

plugin that shows a stats on borrowers

=head1 DESCRIPTION

=over 2

=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 $period = $input->param("period");
my $borstat = $input->param("status");
my $borstat1 = $input->param("activity");
my $output = $input->param("output");
my $basename = $input->param("basename");
my $mime = $input->param("MIME");
my $del = $input->param("sep");
my $selected_branch; # = $input->param("?");

our $branches = GetBranches;

my ($template, $borrowernumber, $cookie)
	= get_template_and_user({template_name => $fullreportname,
				query => $input,
				type => "intranet",
				authnotrequired => 0,
				flagsrequired => {reports=> 1},
				debug => 1,
				});
$template->param(do_it => $do_it);
if ($do_it) {
	my $results = calculate($line, $column, $digits, $borstat,$borstat1 ,\@filters);
	if ($output eq "screen"){
		$template->param(mainloop => $results);
		output_html_with_http_headers $input, $cookie, $template->output;
	} else {
		print $input->header(-type => 'application/vnd.sun.xml.calc',
                         -encoding => 'utf-8',
                             -name => "$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);	# exit after do_it, regardless
} else {
	my $dbh = C4::Context->dbh;
	my $req;
	$template->param(  CAT_LOOP => &catcode_aref);
	my @branchloop;
	foreach (sort {$branches->{$a}->{branchname} cmp $branches->{$b}->{branchname}} keys %$branches) {
		my $line = {branchcode => $_, branchname => $branches->{$_}->{branchname} || 'UNKNOWN'};
		$line->{selected} = 'selected' if ($selected_branch and $selected_branch eq $_);
		push @branchloop, $line;
	}
	$template->param(BRANCH_LOOP => \@branchloop);
 	$req = $dbh->prepare("SELECT DISTINCTROW zipcode FROM borrowers WHERE zipcode IS NOT NULL AND zipcode <> '' ORDER BY zipcode");
 	$req->execute;
	$template->param(   ZIP_LOOP => $req->fetchall_arrayref({}));
	$req = $dbh->prepare("SELECT authorised_value,lib FROM authorised_values WHERE category='Bsort1' ORDER BY lib");
 	$req->execute;
	$template->param( SORT1_LOOP => $req->fetchall_arrayref({}));
	$req = $dbh->prepare("SELECT DISTINCTROW sort2 AS value FROM borrowers WHERE sort2 IS NOT NULL AND sort <> '' ORDER BY sort2 LIMIT 200");
		# More than 200 items in a dropdown is not going to be useful anyway, and w/ 50,000 patrons we can destory DB performance.
	$req->execute;
	$template->param( SORT2_LOOP => $req->fetchall_arrayref({}));
	
	my @mime = ( C4::Context->preference("MIME") );
	# warn 'MIME(s): ' . join ' ', @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,
		DHTMLcalendar_dateformat => C4::Dates->DHTMLcalendar(),
    );

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

sub catcode_aref() {
	my $req = C4::Context->dbh->prepare("SELECT categorycode, description FROM categories ORDER BY description");
	$req->execute;
	return $req->fetchall_arrayref({});
}
sub catcodes_hash() {
	my %cathash;
	my $catcodes = &catcode_aref;
	foreach (@$catcodes) {
		$cathash{$_->{categorycode}} = ($_->{description} || 'NO_DESCRIPTION') . " ($_->{categorycode})";
	}
	return %cathash;
}

sub calculate {
	my ($line, $column, $digits, $status, $activity, $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[4];
#	warn "filtres ".@filters[5];
#	warn "filtres ".@filters[6];

 	$linefilter = @$filters[0] if ($line =~ /categorycode/ )  ;
 	$linefilter = @$filters[1] if ($line =~ /zipcode/ )  ;
 	$linefilter = @$filters[2] if ($line =~ /branchcode/ ) ;
 	$linefilter = @$filters[5] if ($line =~ /sort1/ ) ;
 	$linefilter = @$filters[6] if ($line =~ /sort2/ ) ;
# 
 	my $colfilter = "";
 	$colfilter = @$filters[0] if ($column =~ /categorycode/);
 	$colfilter = @$filters[1] if ($column =~ /zipcode/);
 	$colfilter = @$filters[2] if ($column =~ /branchcode/);
 	$colfilter = @$filters[5] if ($column =~ /sort1/);
 	$colfilter = @$filters[6] if ($column =~ /sort2/);

	my @loopfilter;
	for (my $i=0;$i<=6;$i++) {
		my %cell;
		if ( @$filters[$i] ) {
			$cell{filter} .= @$filters[$i];
			$cell{crit} .="Cat Code " if ($i==0);
			$cell{crit} .="Zip Code" if ($i==1);
			$cell{crit} .="Branchcode" if ($i==2);
			$cell{crit} .="Date of Birth" if ($i==3);
			$cell{crit} .="Date of Birth" if ($i==4);
			$cell{crit} .="Sort1" if ($i==5);
			$cell{crit} .="Sort2" if ($i==6);
			push @loopfilter, \%cell;
		}
	}
	($status  ) and push @loopfilter,{crit=>"Status",  filter=>$status  };
	($activity) and push @loopfilter,{crit=>"Activity",filter=>$activity};
	push @loopfilter,{debug=>1, crit=>"Branches",filter=>join(" ", sort keys %$branches)};
	push @loopfilter,{debug=>1, crit=>"(line, column)", filter=>"($line,$column)"};
# year of activity
	my ( $period_year, $period_month, $period_day )=Add_Delta_YM( Today(),-$period, 0);
	my $newperioddate=$period_year."-".$period_month."-".$period_day;
# 1st, loop rows.
	my $linefield;
	if (($line =~/zipcode/) and ($digits)) {
		$linefield .="left($line,$digits)";
	} else{
		$linefield .= $line;
	}

	my %cathash = ($line eq 'categorycode' or $column eq 'categorycode') ? &catcodes_hash : ();
	push @loopfilter, {debug=>1, crit=>"\%cathash", filter=>join(", ", map {$cathash{$_}} sort keys %cathash)};

	my $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";
	
	push @loopfilter, {sql=>1, crit=>"Query", filter=>$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;
			# $cell{rowtitle_display} = ($linefield eq 'branchcode') ? $branches->{$celvalue}->{branchname} : $celvalue;
			$cell{rowtitle_display} = ($cathash{$celvalue} || "$celvalue\*") if ($line eq 'categorycode');
		}
 		$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 = "select distinctrow $colfield from borrowers where $column is not null";
	if ($colfilter) {
		$colfilter =~ s/\*/%/g;
		$strsth2 .= " AND $colfield LIKE ? ";
	}
	$strsth2 .= " AND $status='1' " if ($status);
	$strsth2 .= " order by $colfield";
	push @loopfilter, {sql=>1, crit=>"Query", filter=>$strsth2};
	my $sth2 = $dbh->prepare($strsth2);
	if ($colfilter) {
		$sth2->execute($colfilter);
	} else {
		$sth2->execute;
	}
 	while (my ($celvalue) = $sth2->fetchrow) {
 		my %cell;
		if ($celvalue) {
			$cell{coltitle} = $celvalue;
			# $cell{coltitle_display} = ($colfield eq 'branchcode') ? $branches->{$celvalue}->{branchname} : $celvalue;
			$cell{coltitle_display} = $cathash{$celvalue} if ($column eq 'categorycode');
		}
		push @loopcol, \%cell;
 	}

	my $i=0;
	#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;
		$table{$row->{rowtitle}}->{rowtitle_display} = $row->{rowtitle_display};
	}

# 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]);
	$strcalc .= " AND branchcode like '" . @$filters[2] ."'" if ( @$filters[2] );
	@$filters[3]=~ s/\*/%/g if (@$filters[3]);
	$strcalc .= " AND dateofbirth > '" . @$filters[3] ."'" if ( @$filters[3] );
	@$filters[4]=~ s/\*/%/g if (@$filters[4]);
	$strcalc .= " AND dateofbirth < '" . @$filters[4] ."'" if ( @$filters[4] );
	@$filters[5]=~ s/\*/%/g if (@$filters[5]);
	$strcalc .= " AND sort1 like '" . @$filters[5] ."'" if ( @$filters[5] );
	@$filters[6]=~ s/\*/%/g if (@$filters[6]);
	$strcalc .= " AND sort2 like '" . @$filters[6] ."'" if ( @$filters[6] );
	$strcalc .= " AND borrowernumber in (select distinct(borrowernumber) from old_issues where issuedate > '" . $newperioddate . "')" if ($activity eq 'active');
	$strcalc .= " AND borrowernumber not in (select distinct(borrowernumber) from old_issues where issuedate > '" . $newperioddate . "')" if ($activity eq 'nonactive');
	$strcalc .= " AND $status='1' " if ($status);
	$strcalc .= " group by $linefield, $colfield";
	push @loopfilter, {sql=>1, crit=>"Query", filter=>$strcalc};
	my $dbcalc = $dbh->prepare($strcalc);
	$dbcalc->execute;
	
	my $emptycol; 
	while (my ($row, $col, $value) = $dbcalc->fetchrow) {
#		warn "filling table $row / $col / $value ";
		$emptycol = 1 if (!defined($col));
		$col = "zzEMPTY" if (!defined($col));
		$row = "zzEMPTY" if (!defined($row));
		
		$table{$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,
			'rowtitle_display' => $table{$row}->{rowtitle_display} || $row,
			'loopcell' => \@loopcell,
			'totalrow' => $table{$row}->{totalrow}
		};
	}
	
	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;
}