#!/usr/bin/perl -w

=head1 NAME

all2all.pl - basic script for all WebPAC needs

=cut

use strict;
use locale;
use YAML;
use Carp;
use Getopt::Long;
use Text::Unaccent 1.02;

use lib './lib';
use WebPAC;
#use WebPAC::jsFind;
use WebPAC::HyperEstraier;
use WebPAC::Index;
use WebPAC::Tree;

# options which can be changed via command line
#
my $code_page = 'ISO-8859-2';
my ($limit_mfn, $start_mfn, $debug, $low_mem);
#my $index_path = './out/index';
my $index_path = './out/casket';

my $result = GetOptions(
	"code_page=s"	=> \$code_page,
	"limit_mfn=i"	=> \$limit_mfn,
	"start_mfn=i"	=> \$start_mfn,
	"debug!"	=> \$debug,
	"low_mem!"	=> \$low_mem,
);

my $filter = {
	'CROVOC' => sub {
		my $tmp = shift || return;
		$tmp =~ s/\s*HIDRA.*//;
		return undef unless ($tmp =~ s/\s*CROVOC.*$/ #C#/);
		# remove repeating stars
		# FIXME this should be fixed at right place, not here!
		$tmp =~ s/(\s*#C#)+/ #C#/g;
		return $tmp;
	},
	'CROVOC_tree' => sub {
		my $tmp = shift || return;
		$tmp =~ s/\s*CROVOC.*$/ <img src="img\/crovoc.png" border="0">/;
		$tmp =~ s/\s*EUROVOC.*//;
		$tmp =~ s/\s*HIDRA.*//;
		return $tmp;
	},
	# TT filter
	'CROVOC_img' => sub {
		my $tmp = shift;
		$tmp =~ s/\s*#C#\s*/ <img src="..\/img\/crovoc.png" border="0">/gis;
		$tmp =~ s/"img\/crovoc.png"/"..\/img\/crovoc.png"/gis;
		return $tmp;
	}
};

## remove accented characters
#
sub unac {
	my $string = shift || return;
	$string = unac_string($code_page,$string);
	$string =~ tr/ðÐ/dD/;
	$string = unac_entities($string);
	return $string;
}
sub unac_2 {
	my $string = shift || return;
	if (length($string) > 2) {
		my $pr = substr($string,0,2);
		$string = unac_string($code_page,substr($string,2));
		$string =~ tr/ðÐ/dD/;
		$string = $pr . $string;
	}
	$string = unac_entities($string);
	return lc($string);
}

sub unac_entities {
	my $ent = shift || return;

	$ent =~ s/&(\w)(acute|cedil|circ|grave|ring|slash|tilde|uml);/$1/gi;
	$ent =~ s/&eth;/d/g;
	$ent =~ s/&E[tT][hH];/D/g;
	$ent =~ s/&(\w\w)lig;/$1/gi;

	return $ent;
}

# create WebPAC object
#
my $webpac = new WebPAC(
	code_page => $code_page,
	limit_mfn => $limit_mfn,
	start_mfn => $start_mfn,
	debug => $debug,
	low_mem => $low_mem,
	filter => $filter,
) || die;

my $log = $webpac->_get_logger() || die "can't get logger";

#$log->debug("creating WebPAC::jsFind object");
#
#my $index = new WebPAC::jsFind(
#	index_path => $index_path,
#	keys => 62,
#) || die;

$log->debug("creating HyperEstraier object");
my $index = new WebPAC::HyperEstraier( index_path => $index_path ) || die;

my $thes;

$|=1;

my $maxmfn = $webpac->open_isis(
	filename => shift @ARGV || '/data/hidra/THS/THS',
	lookup => [
	{ 'key' => 'd:v900', 'val' => 'filter{CROVOC_tree}v250^a v800' },
#	{ 'eval' => '"v901^a" eq "Podruèje"', 'key' => 'pa:v561^4:v562^4:v461^1', 'val' => 'v900' },
#	{ 'eval '=> '"v901^a" eq "Mikrotezaurus"', 'key' => 'a:v561^4:v562^4:v461^1', 'val' => 'v900' },
#	{ 'eval' => '"v901^a" eq "Deskriptor"', 'key' => 'a:v561^4:v562^4:v461^1', 'val' => 'v900' },
	{ 'key' => 'a:v561^4:v562^4:v461^1', 'val' => 'v900' },
	{ 'key' => '900_mfn:v900', 'val' => 'v000' },
	# tree structure
	{ 'eval' => 'length("v251") == 2 && "v800" =~ m/EUROVOC/ || "v800" =~ m/CROVOC/ && "v251" =~ m/^(H|HD|L|Z|P)$/', 'key' => 'root:v251', 'val' => 'v900' },
	{ 'eval' => '"v251"', 'key' => 'code:v900', 'val' => 'v561^4:v251' },
	{ 'eval' => '"v561^4" && "v562^4"', 'key' => 'code:v900', 'val' => 'v561^4:v562^4' },
	{ 'key' => 'crovoc:v900', 'val' => 'filter{CROVOC}v800' },
	],
);

$log->debug("isis file ",$webpac->{'isis_filename'}," opened");

$log->info("rows: $maxmfn");

$webpac->open_import_xml(type => 'isis_hidra_ths');

if(1) { # XXX

while (my $rec = $webpac->fetch_rec) {

	my @ds = $webpac->data_structure($rec);

	if (0 && $log->is_debug) {
		$log->debug("rec = ",Dump($rec));
		$log->debug("ds = ",Dump(\@ds));
	}

	next if (! @ds);

	my $filename = $webpac->{'current_filename'} || $log->logdie("no current_filename in webpac object");

	if ($filename) {
		$webpac->output_file(
			file => $filename,
			template => 'html.tt',
			data => \@ds,
			headline => $webpac->{'headline'},
		);
	} else {
		print $webpac->output(
			template => 'text.tt',
			data => \@ds,
			headline => $webpac->{'headline'},
		);
	}

	my $headline = $webpac->{'headline'};

	my $f = $filename;
	$f =~ s!out/!!;

	# save into index
	foreach my $ds (@ds) {
		next if (! $ds->{'swish'});

		# strip all non word characters from beginning or end
		# of word
		my $words = unac(join(" ",@{$ds->{'swish'}}));
		$words =~ s/^\W+//;
		$words =~ s/\W*\s+\W*/ /g;
		$words =~ s/\W+$//;

		# first try to generate headline for this entry from index
		my $h = $ds->{'index'}->[0];
		# then, from display
		$h ||= $ds->{'display'}->[0];
		# and as last resport, fallback to headline
		$h ||= $headline;

		$index->insert(
			index_name => $ds->{'tag'},
			#path => $f,
			path => $webpac->mfn,
			headline => $h,
			words => $words,
		);
	}

	# save into sorted index (thesaurus)
	foreach my $ds (@ds) {
		next if (! $ds->{'index'});

		$thes->{$ds->{'tag'}} ||= new WebPAC::Index( name => $ds->{'tag'} );

		foreach my $h (@{$ds->{'index'}}) {
			$thes->{$ds->{'tag'}}->insert(
				sort_by => unac_2($h),
				mfn => $webpac->mfn,
				headline => $h,
			);
		}
	}

#	print Dump(\@ds);

}

foreach my $t (keys %{$thes}) {

	my @e = $thes->{$t}->elements;
	if (! @e) {
		$log->logwarn("no elements in sorted index $t?");
		next;
	}

	my $file = "./out/bfilter/$t.txt";
	$log->info("saving sorted index $t to '$file' [".scalar(@e)." elements]");

	$webpac->output_file(
		file => $file,
		template => 'index.tt',
		data => \@e,
		index_name => $t,
	);
}

if (0 && $log->is_debug) {
	$log->debug("lookup hash: ",Dump($webpac->{'lookup'}));
	$log->debug("data hash: ",Dump($webpac->{'data'}));
	foreach my $t (keys %{$thes}) {
		$log->debug("thesaurus $t hash: ",Dump($thes->{$t}));
	}
}

} # XXX if(0)

#$log->debug("lookup hash: ",Dump($webpac->{'lookup'}));

$log->info("creating tree");

#
# define tree structure
#

my $l = $webpac->{'lookup'} || $log->logconfess("can't find lookup");

my @tree = ({
	# level 0
	code_arr	=> sub { sort keys %{$l} },
	filter_code	=> sub {
					my $t = shift;
					return $t if ($t =~ s/root://);
				},
	lookup_v900	=> sub { shift @{$l->{"root:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[1]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[1]}} },
	have_children	=> sub { return $l->{"a:".$_[0]."::"} },
	have_children_at_level => sub {
				return unless (defined($l->{"code:".$_[1]}));
				my $code = shift @{$l->{"code:".$_[1]}};
				print STDERR "## $_[1] -> $code\n";
				return undef unless($code);
				return(9, $l->{"a:$code:"} ) if (defined($l->{"a:$code:"}));
			},
	style		=> 'display: none',
	iframe		=> 1,
	},{
	# 1
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },	# nop
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":"} },
	style		=> 'display: none',
	},{
	# 2
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	style		=> 'display: none',
	},{
	# 3 u¾i pojam
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	},{
	# 4
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	},{
	# 5
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	},{
	# 6
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	},{
	# 7
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	},{
	# 8
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
#	have_children	=> sub { return $l->{"a:".$_[1].":".$_[0]} },
	have_children	=> sub { 0 },
	},{
	# 9 - level which is never reached except explicitly
	code_arr	=> sub { @{$_[0]} },
	filter_code	=> sub { shift },
	lookup_v900	=> sub { shift @{$l->{"code:".$_[0]}} },
	lookup_term	=> sub { shift @{$l->{"d:".$_[0]}} },
	lookup_mfn	=> sub { shift @{$l->{"900_mfn:".$_[0]}} },
	have_children	=> sub { 0 },
	have_children_at_level => sub { defined($l->{"a:".$_[1].":".$_[0]}) && return (9,$l->{"a:".$_[1].":".$_[0]}) },
	},{
});

my $tree = new WebPAC::Tree(
	tree => \@tree,
	detail_url => sub {
		my $mfn = shift;
		my $url = "thes/${mfn}.html";
		return $url if (-e "./out/$url");
	},
	nodes_dir => 'nodes',
);

$tree->output(
	dir => './out',
	html => 'browse.html',
	template_dir => './output_template/',
	template_tree => 'tree.tt',
	template_node => 'node.tt',
	js => 'tree-ids.js',
);

$tree->output(
 	dir => './eurovoc',
 	html => 'hijerarhija.html',
	template_dir => './output_template/',
	template_tree => 'hijerarhija.tt',
	template_node => 'hijerarhija_node.tt',
	js => 'tree-ids.js',
);


$log->info("closing index");
$index->close;

$log->info("elapsed time: ",$webpac->fmt_time(time() - $webpac->{'start_t'}));