# Blosxom Plugin: rast
# Author: Gosuke Miyashita <miya@mizzy.org>
# Version: 2005-05-03
# Blosxom Home/Docs/Licensing: http://www.blosxom.com/

package rast;

use strict;
use vars qw($query $summary);
use CGI qw(param url);
use Rast;
use HTML::TagFilter;

## --- configurable variables ---
my $rast_db_dir = "$blosxom::plugin_state_dir/rastdb";
my $rast_encoding = "euc_jp";

sub start {
    return 1;
}

sub filter {
    my($pkg, $files) = @_;

    ## create rast database
    ## Usage: blosxom.cgi rast_create_db=1 [recache=all]
    if (!$ENV{GATEWAY_INTERFACE} and param('rast_create_db')){
	Rast->create(
		     "$rast_db_dir",
		     {
			 encoding => $rast_encoding,
			 preserve_text => 1,
			 properties => [
					['filename', RAST_TYPE_STRING, RAST_PROPERTY_FLAG_SEARCH|RAST_PROPERTY_FLAG_UNIQUE],
					['last_modified', RAST_TYPE_DATE, RAST_PROPERTY_FLAG_SEARCH],
					],
			 }
		     );
	
    }

    ## reindex database
    if (!$ENV{GATEWAY_INTERFACE} and param('rast_reindex_db')){
	my $db = Rast->open("$rast_db_dir", RAST_RDWR, {sync_threshold_chars => 1000000});
	foreach my $file (keys %$files){
	    my $time = $files->{$file};
	    my ($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) = localtime($time);
	    my $date = sprintf("%04d-%02d-%02dT%02d:%02d:%02d", $year + 1900, $month + 1, $mday, $hour, $min, $sec);
	    my $options = [$file, $date];
	    
	    open(IN, $file) or die $!;
	    my @lines = <IN>;
	    my $lines;
	    my $tf = HTML::TagFilter->new( allow => {} );
	    foreach my $line (@lines){
		if($line !~ /^meta-/){
		    $lines .= $tf->filter($line);
		}
	    }

	    $db->register($lines, $options);
	}
	
	$db->close;
	
    }

    ## search rast database
    if(param('rast_search_query')){
	$query = param('rast_search_query');

	my $db = Rast->open("$rast_db_dir", RAST_RDWR, {sync_threshold_chars => 1000000});
	
	my $result = $db->search(
				 $query,
				 {
				     need_summary => 1,
				     properties => ['filename', 'last_modified'],
				 }
				 );
	
	my $hit_files;
	while(my $row = $result->fetch){
	    $hit_files->{$row->{properties}->[0]} = $files->{$row->{properties}->[0]};
	    my @query = split(/\s/, $query);
	    map { $row->{summary} =~ s!$_!<strong class="search">$_</strong>!gi; } @query;
	    $summary->{$row->{properties}->[0]} = $row->{summary};
	}
	
	if($result->hit_count){
	    %$files = %$hit_files;
	} else {
	    %$files = {};
	}

	$db->close;
    }

}

sub story {
    my($pkg, $path, $fn, $story_ref, $title_ref, $body_ref) = @_;
    
    if(param('rast_search_query')){
	$$body_ref = '<p class="entryBody">' . $summary->{"$blosxom::datadir$path/$fn.$blosxom::file_extension"} .
	    " ... <a href='$path/$fn.html'>[Á´ÉôÆɤà]</a></p>";	  
    }
}

1;