######################################################################
#
#  EPrints Registration Module
#
######################################################################
#
#  This file is part of EPrints 2.
#  
#  Copyright (c) 2000,2001,2002 University of Southampton, UK. SO17 1BJ.
#  
#  EPrints 2 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.
#  
#  EPrints 2 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 EPrints 2; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
######################################################################

use EPrints::Session;
use strict;

my $session = new EPrints::Session;
Apache::exit( 0 ) unless( defined $session );

my( $page, $title ) = make_page( $session );

$page->appendChild( $session->html_phrase( "general:frontpage_link" ) );

$session->build_page( $title, $page, "registration" );
$session->send_page();

$session->terminate();

sub make_page
{
	my( $session ) = @_;

	my $fakeuser = EPrints::User::create_user(
			$session,
			$session->get_archive()->get_conf( "default_user_type" ) );

	my $page = $session->make_doc_fragment;

	my $user_ds = $session->get_archive()->get_dataset( "user" );

## We assume that the "default_user_type" dataset has the following fields:
##    email
##    password
##    username
##    usertype
## password should not be "required", others might be.
##
	my @fields = $user_ds->get_type_fields( $fakeuser->get_value( "usertype" ), 0 );
	my $title = $session->html_phrase( "cgi/register:title" );

	if( !$session->have_parameters() )
	{

	$page->appendChild( $session->html_phrase( "cgi/register:intro" ) );

	my @newfields = ();
	foreach my $field ( @fields ){
##	    next if( $field->get_name eq "usertype" );
	    my $f = $field->clone();
	    $f->set_property( "confid", "register" );
	    push @newfields,$f;
	}

	my $buttons = { submit=>$session->phrase( "cgi/register:action_submit" )
		      };

	$page->appendChild( $session->render_input_form(
			show_comment=>1,
			dataset=>$user_ds,
			type=>$fakeuser->get_value( "usertype" ),
			show_help=>1,
			show_names=>1,
			default_action=>"submit",
			buttons=>$buttons,
			fields=>\@newfields,
			dest=>"register" ) );

	$fakeuser->remove;

	return( $page, $title );
	}

# Process the form.
	my $username;
	my @newfields = ();
	my %values = ();
	my $passwdrequired = 0;

	foreach my $field ( @fields ){
##	    next if( $field->get_name eq "usertype" );
	    my $f = $field->clone();
	    $f->set_property( "confid", "register" );
	    my $value= $field->form_value ($session);
	    $fakeuser->set_value($field->get_name, $value);
	    if($field->get_name eq "password")
	    {
		$passwdrequired=$user_ds->field_required_in_type($field,$fakeuser->get_value("usertype"));
	    }
	    push @newfields,$f;
	    $values{$field->get_name} = $value;
	}

	my $email = $values{"email"};
	my $newpassword = $values{ "password"};
	my $username = $values{"username" };
	$values{"password"} = "";

	EPrints::Config::load_archive_config_module(
		$session->get_archive()->{id} );
	my @problems = @{$fakeuser->EPrints::User::validate()};

	if( $passwdrequired ?
	    ( defined $newpassword && length($newpassword) < 3 ):
	    (! defined $newpassword ) )
	{
		push @problems, $session->html_phrase(
			"lib/user:missed_field", 
			field => $session->make_text( 
			$user_ds->get_field("password")->display_name( $session ) ) );
	}
	if( scalar @problems == 0  && defined EPrints::User::user_with_username( $session, $username ) )
	{
		push @problems, $session->html_phrase(
			"cgi/register:username_in_use",
                       	username=>$session->make_text( $username ) ) ;
	} 

	if( scalar @problems == 0 ){ ## everything is OK
	
	$fakeuser->set_value( "newpassword", $newpassword );
	my $pin = sprintf( "%04X%04X%04X%04X",int rand 0xffff,int rand 0xffff,int rand 0xffff,int rand 0xffff );
	$fakeuser->set_value( "newemail", undef );
	$fakeuser->set_value( "password", undef );
	$fakeuser->set_value( "pin", $pin );
	$fakeuser->set_value( "pinsettime", time() );
	$fakeuser->commit();
	$fakeuser->mail( 
		"cgi/register:account",
		$session->html_phrase( "mail_password_pin", 
	confirmurl => $session->make_text( 
            $session->get_archive()->get_conf( "perl_url" )."/confirm?userid=".$fakeuser->get_value( "userid" )."&pin=".$pin ) ) );
	$page->appendChild( $session->html_phrase(
		"cgi/register:mail_sent",
		email=>$session->make_text( $email ) ) );

	return( $page, $title );
	}
	
	$page->appendChild( $session->html_phrase(
		"lib/userform:form_incorrect" ) );
	my $ul = $session->make_element( "ul" );

	foreach my $problem ( @problems ) {
	    my $li = $session->make_element( "li" );
	    $li->appendChild($problem);
            $ul->appendChild( $li );
	}
	$page->appendChild( $ul ) ;

	my $buttons = { submit=>$session->phrase( "cgi/register:action_submit" )
		      };

	$page->appendChild( $session->render_input_form(
			show_comment=>1,
			dataset=>$user_ds,
			type=>$fakeuser->get_value( "usertype" ),
			show_help=>1,
			show_names=>1,
			default_action=>"submit",
			buttons=>$buttons,
			fields=>\@newfields,
		        values=>\%values,
			dest=>"register" ) );

	$fakeuser->remove;

	return( $page, $session->html_phrase("cgi/register:error_title" ) );

}