#!/usr/bin/perl

=head1 NAME

title_duplicates - warn of duplicate entries based on title

=head1 SYNOPSIS

        title_duplicates?q=Field+studies+&field=title&dataset=eprint&id=23

=head1 DESCRIPTION

Provides a warning box for any other eprints where q prefixes the title.

=cut

use EPrints;

use strict;
use warnings;

use LWP::UserAgent;
#use WWW::Curl;

my $repo = EPrints->new->current_repository;

my $db = $repo->get_database;

my $rl_conf = $repo->get_conf("repo_link");

my $q = $repo->param( "q" ) || "";
my $jsonp = $repo->param( "json" ) || $repo->param( "jsonp" ) || $repo->param( "callback" ) || "send_data";

unless (length( $q ) >= $rl_conf->{min_chars}) {
	my $res_str = "{lookup_response: [] }";

	if($jsonp){
		$jsonp =~ s/[^=A-Za-z0-9_]//g;
		$res_str = "$jsonp(\n".$res_str;
		$res_str .= ");\n";
	}
	print $res_str;
	exit;

}

my $id = $repo->param( "eprintid" );
$id = $repo->param( "id" ) if !EPrints::Utils::is_set( $id );

if( !defined($id) )
{
        $repo->log( "ext lookup script called without id argument: ".join(',',$repo->param));
        exit(0);
}
elsif( $id =~ /^([0-9]+)$/ )
{
        $id = $1;
}
else
{
        EPrints::abort "Requires numeric id argument";
}

for my $remote_repo (@{$rl_conf->{remote_repos}}){

	my $remote_request_string = $remote_repo->{repo_uri};
	$remote_request_string .= ":".$remote_repo->{repo_port} if(defined $remote_repo->{repo_port} && $remote_repo->{repo_port}=~ /\d+/);
	$remote_request_string .= $remote_repo->{search_script}."?q=$q";

	#print STDERR $remote_request_string."\n";
	if($remote_request_string !~ /^http:\/\//){
		$remote_request_string = "http://".$remote_request_string;
	}

	my $browser = LWP::UserAgent->new;
	my $req =  HTTP::Request->new( GET => $remote_request_string);
#	$req->authorization_basic( $rl_conf->{link_user}, $rl_conf->{link_password});
	my $response = $browser->request( $req );

	my $res_str = $response->decoded_content;

	$res_str = "{lookup_response: $res_str, ".
			"eprintid: $id, ".
		      #  "update_script: '".$repo->get_conf("base_url").$roar->{internal_link_update_script}."'".
			"}";

	if($jsonp){
		$jsonp =~ s/[^=A-Za-z0-9_]//g;
		$res_str = "$jsonp(\n".$res_str;
		$res_str .= ");\n";
	}

#	print STDERR $res_str;
	print $res_str;

}