# Movable Type (r) Open Source (C) 2001-2008 Six Apart, Ltd.
# This program is distributed under the terms of the
# GNU General Public License, version 2.
#
# $Id: Wizard.pm 83433 2008-06-18 21:44:24Z bchoate $

package MT::App::Wizard;

use strict;
use base qw( MT::App );

use MT::Util qw( trim );

sub id { 'wizard' }

sub init {
    my $app = shift;
    my %param = @_;
    $app->init_core();
    my $cfg = $app->config;
    $cfg->define($app->component('core')->registry('config_settings'));
    $app->init_core_registry();
    $cfg->UsePlugins(0);
    $app->SUPER::init(@_);
    $app->{mt_dir} ||= $ENV{MT_HOME} || $param{Directory};
    $app->{is_admin} = 1;
    $app->add_methods(
        pre_start => \&pre_start,
        run_step => \&run_step,
    );
    $app->{template_dir} = 'wizard';
    $app->config->set('StaticWebPath', $app->static_path);
    return $app;
}

sub init_request {
    my $app = shift;

    $app->{default_mode} = 'pre_start';

    # prevents init_request from trying to process the configuration file.
    $app->SUPER::init_request(@_);
    $app->set_no_cache;
    $app->{requires_login} = 0;

    my $mode = $app->mode;
    return unless $mode eq 'previous_step' || $mode eq 'next_step'
        || $mode eq 'retry' || $mode eq 'test';

    my $step = $app->param('step') || '';

    my $prev_step = 'pre_start';
    my $new_step = '';

    if ($mode eq 'retry') {
        $new_step = $step;
    } elsif ($mode eq 'test') {
        $new_step = $step;
    } else {
        my $steps = $app->wizard_steps;
        foreach my $s (@$steps) {
            if ($mode eq 'next_step') {
                if ($prev_step eq $step) {
                    $new_step = $s->{key};
                    $app->param('save', 1)
                        if $app->request_method eq 'POST';
                    last;
                }
            } elsif ($mode eq 'previous_step') {
                if ($s->{key} eq $step) {
                    $new_step = $prev_step if $prev_step;
                    last;
                }
            }
            $prev_step = $s->{key};
        }
    }

    $app->param('next_step', $new_step);
    $app->mode('run_step');
}

sub init_core_registry {
    my $app = shift;
    my $core = $app->component("core");
    $core->{registry}{applications}{wizard} = {
        wizard_steps => {
            start => {
                order => 0,
                handler => \&start,
                params => [qw(set_static_uri_to set_static_file_to)],
            },
            configure => {
                order => 100,
                handler => \&configure,
                params => [qw(dbpath dbname dbport dbserver dbsocket
                    dbtype dbuser dbpass publish_charset)]
            },
            optional => {
                order => 200,
                handler => \&optional,
                params => [qw(mail_transfer sendmail_path smtp_server
                    test_mail_address)]
            },
            cfg_dir => {
                order => 300,
                handler => \&cfg_dir,
                params => ['temp_dir'],
                condition => \&cfg_dir_conditions,
            },
            seed => {
                order => 10000,
                handler => \&seed,
            },
        },
        optional_packages => {
            'HTML::Entities' => {
                link => 'http://search.cpan.org/dist/HTML-Entities',
                label => 'This module is needed to encode special characters, but this feature can be turned off using the NoHTMLEntities option in mt-config.cgi.',
            },
            'LWP::UserAgent' => {
                link => 'http://search.cpan.org/dist/LWP',
                label => 'This module is needed if you wish to use the TrackBack system, the weblogs.com ping, or the MT Recently Updated ping.',
            },
            'SOAP::Lite' => {
                link => 'http://search.cpan.org/dist/SOAP-Lite',
                version => 0.50,
                label => 'This module is needed if you wish to use the MT XML-RPC server implementation.',
            },
            'File::Temp' => {
                link => 'http://search.cpan.org/dist/File-Temp',
                label => 'This module is needed if you would like to be able to overwrite existing files when you upload.',
            },
            'List::Util' => {
                link => 'http://search.cpan.org/dist/Scalar-List-Utils',
                label => 'List::Util is optional; It is needed if you want to use the Publish Queue feature.',
            },
            'Image::Magick' => {
                link => 'http://www.imagemagick.org/script/perl-magick.php',
                label => 'This module is needed if you would like to be able to create thumbnails of uploaded images.',
            },
            'Storable' => {
                link => 'http://search.cpan.org/dist/Storable',
                label => 'This module is required by certain MT plugins available from third parties.',
            },
            'Crypt::DSA' => {
                link => 'http://search.cpan.org/dist/Crypt-DSA',
                label => 'This module accelerates comment registration sign-ins.',
            },
            'MIME::Base64' => {
                link => 'http://search.cpan.org/dist/MIME-Base64',
                label => 'This module is needed to enable comment registration.',
            },
            'XML::Atom' => {
                link => 'http://search.cpan.org/dist/XML-Atom',
                label => 'This module enables the use of the Atom API.',
            },
            'Archive::Tar' => {
                link => 'http://search.cpan.org/dist/Archive-Tar',
                label => 'This module is required in order to archive files in backup/restore operation.',
            },
            'IO::Compress::Gzip' => {
                link => 'http://search.cpan.org/dist/IO-Compress-Zlib',
                label => 'This module is required in order to compress files in backup/restore operation.',
            },
            'IO::Uncompress::Gunzip' => {
                link => 'http://search.cpan.org/dist/IO-Compress-Zlib',
                label => 'This module is required in order to decompress files in backup/restore operation.',
            },
            'Archive::Zip' => {
                link => 'http://search.cpan.org/dist/Archive-Zip',
                label => 'This module is required in order to archive files in backup/restore operation.',
            },
            'XML::SAX' => {
                link => 'http://search.cpan.org/dist/XML-SAX',
                label => 'This module and its dependencies are required in order to restore from a backup.',
            },
            'Digest::SHA1' => {
                link => 'http://search.cpan.org/dist/Digest-SHA1',
                label => 'This module and its dependencies are required in order to allow commenters to be authenticated by OpenID providers including Vox and LiveJournal.',
            },
            'Mail::Sendmail' => {
                link => 'http://search.cpan.org/dist/Mail-Sendmail',
                label => 'This module is required for sending mail via SMTP Server.',
            },
            'Safe' => {
                link => 'http://search.cpan.org/dist/Safe',
                label => 'This module is used in test attribute of MTIf conditional tag.',
            },
        },
        required_packages => {
            'Image::Size' => {
                link => 'http://search.cpan.org/dist/Image-Size',
                label => 'This module is required for file uploads (to determine the size of uploaded images in many different formats).',
            },
            'CGI::Cookie' => {
                link => 'http://search.cpan.org/search?query=cgi-cookie&mode=module',
                label => 'This module is required for cookie authentication.',
            },
            'DBI' => {
                link => 'http://search.cpan.org/dist/DBI',
                label => 'DBI is required to store data in database.',
                version => 1.21,
            },
            'CGI' => {
                link => 'http://search.cpan.org/dist/CGI.pm',
                label => 'CGI is required for all Movable Type application functionality.',
            },
            'File::Spec' => {
                link => 'http://search.cpan.org/dist/File-Spec',
                version => 0.8,
                label => 'File::Spec is required for path manipulation across operating systems.',
            }
        },
    };
}

sub run_step {
    my $app = shift;
    my $steps = $app->registry("wizard_steps");
    my $next_step = $app->param('next_step');
    my $curr_step = $app->param('step');
    my $h = $steps->{$curr_step}{handler};

    my %param = $app->unserialize_config;
    my $keys = $app->config_keys;
    if ($curr_step) {
        foreach (@{ $keys->{$curr_step} }) {
            $param{$_} = $app->param($_)
                if defined $app->param($_);
        }

        if ($app->param('save')) {
            $app->param('config', $app->serialize_config(%param));
        }
    }

    $h = $steps->{$next_step}{handler};

    if (!$h) {
        return $app->pre_start();
    }

    $h = $app->handler_to_coderef($h)
        unless ref($h) eq 'CODE';

    $app->param('step', $next_step);
    return $h->($app, %param);
}

sub config_keys {
    my $app = shift;
    my $steps = $app->registry("wizard_steps");
    my $keys = {};
    foreach my $key (keys %$steps) {
        my $p = $steps->{$key}{params};
        $keys->{$key} = $p if $p;
    }
    return $keys;
}

sub init_config {
    return 1;
}

sub pre_start {
    my $app = shift;
    my %param;

    eval { use File::Spec; };
    my ($cfg, $cfg_exists, $static_file_path);
    if (!$@) {
        $cfg = File::Spec->catfile($app->{mt_dir}, 'mt-config.cgi');
        $cfg_exists |= 1 if -f $cfg;

        $static_file_path = File::Spec->catfile($app->static_file_path);
    }

    $param{cfg_exists} = $cfg_exists;
    $param{valid_static_path} = 1 if $app->is_valid_static_path($app->static_path);
    $param{mt_static_exists} = $app->mt_static_exists;
    $param{static_file_path} = $static_file_path;

    return $app->build_page("start.tmpl", \%param);
}

sub wizard_steps {
    my $app = shift;
    my @steps;
    my $steps = $app->registry("wizard_steps");
    my $active_step = $app->param('step') || 'start';
    my %param = $app->unserialize_config;
    foreach my $key (keys %$steps) {
        if (my $cond = $steps->{$key}{condition}) {
            if (!ref($cond)) {
                $cond = $app->handler_to_coderef($cond);
            }
            next unless ref($cond) eq 'CODE';
            next unless $cond->($app, \%param);
        }
        push @steps, {
            key => $key,
            active => $active_step eq $key,
            %{$steps->{$key}},
        };
    }
    @steps = sort { $a->{order} <=> $b->{order} } @steps;
    return \@steps;
}

sub build_page {
    my $app = shift;
    my ($tmpl, $param) = @_;

    $param ||= {};
    my $steps = $app->wizard_steps;
    $param->{'wizard_steps'} = $steps;
    $param->{'step'} = $app->param('step');

    return $app->SUPER::build_page($tmpl, $param);
}

sub start {
    my $app = shift;
    my %param = @_;

    my $static_path = $app->param('set_static_uri_to');
    my $static_file_path = defined $param{set_static_file_to} ?
        $param{set_static_file_to} :
        $app->param('set_static_file_to');
    $param{set_static_file_to} = $static_file_path;

    # test for static_path
    unless ($app->param('set_static_uri_to')) {
        $param{uri_invalid} = 1;
        return $app->build_page("start.tmpl", \%param);
    }

    $static_path = $app->cgipath . $static_path
        unless $static_path =~ m#^(https?:/)?/#;
    $static_path =~ s#(^\s+|\s+$)##;
    $static_path .= '/' unless $static_path =~ m!/$!;

    unless ($app->is_valid_static_path($static_path)) {
        $param{uri_invalid} = 1;
        $param{set_static_uri_to} = $app->param('set_static_uri_to');
        return $app->build_page("start.tmpl", \%param);
    }

    $app->config->set('StaticWebPath', $static_path);

    # test for static_file_path
    unless ($static_file_path) {
        $param{file_invalid} = 1;
        return $app->build_page("start.tmpl", \%param);
    }
    
    if (!(-d $static_file_path) || !(-f File::Spec->catfile($static_file_path, "mt.js"))) {
        $param{file_invalid} = 1;
        $param{set_static_uri_to} = $app->param('set_static_uri_to');
        return $app->build_page("start.tmpl", \%param);
    }
    $param{config} = $app->serialize_config(%param);
    $param{static_file} = $static_file_path;

    # test for required packages...
    my $req = $app->registry("required_packages");
    my @REQ;
    foreach my $key (keys %$req) {
        my $pkg = $req->{$key};
        push @REQ, [ $key, $pkg->{version} || 0, 1, $pkg->{label}, $key, $pkg->{link} ];
    }
    my ($needed) = $app->module_check(\@REQ);
    if (@$needed) {
        $param{package_loop} = $needed;
        $param{required} = 1;
        return $app->build_page("packages.tmpl", \%param);
    }

    my @DATA;
    my $drivers = $app->object_drivers;
    foreach my $key (keys %$drivers) {
        my $driver = $drivers->{$key};
        my $label = $driver->{label};
        my $link = 'http://search.cpan.org/dist/' . $driver->{dbd_package};
        $link =~ s/::/-/g;
        push @DATA, [ $driver->{dbd_package}, $driver->{dbd_version}, 0,
            $app->translate("The [_1] database driver is required to use [_2].", $driver->{dbd_package}, $label),
            $label, $link ];
    }
    my ($db_missing) = $app->module_check(\@DATA);
    if ((scalar @$db_missing) == (scalar @DATA)) {
        $param{package_loop} = $db_missing;
        $param{missing_db_or_optional} = 1;
        $param{missing_db} = 1;
        return $app->build_page("packages.tmpl", \%param);
    }

    my $opt = $app->registry("optional_packages");
    my @OPT;
    foreach my $key (keys %$opt) {
        my $pkg = $opt->{$key};
        push @OPT, [ $key, $pkg->{version} || 0, 0, $pkg->{label}, $key, $pkg->{link} ];
    }
    my ($opt_missing) = $app->module_check(\@OPT);
    push @$opt_missing, @$db_missing;
    if (@$opt_missing) {
        $param{package_loop} = $opt_missing;
        $param{missing_db_or_optional} = 1;
        $param{optional} = 1;
        return $app->build_page("packages.tmpl", \%param);
    }

    $param{success} = 1;
    return $app->build_page("packages.tmpl", \%param);
}

sub object_drivers {
    my $app = shift;
    my $drivers = $app->registry("object_drivers") || {};
    return $drivers;
}

sub configure {
    my $app = shift;
    my %param = @_;

    $param{set_static_uri_to} = $app->param('set_static_uri_to');
    # set static web path
    $app->config->set('StaticWebPath', $param{set_static_uri_to});
    delete $param{publish_charset};
    if (my $dbtype = $param{dbtype}) {
        $param{"dbtype_$dbtype"} = 1;
        if ($dbtype eq 'mysql') {
            $param{login_required} = 1;
        } elsif ($dbtype eq 'postgres') {
            $param{login_required} = 1;
        } elsif ($dbtype eq 'oracle') {
            $param{login_required} = 1;
        } elsif ($dbtype eq 'mssqlserver') {
            $param{login_required} = 1;
            $param{publish_charset} = $app->param('publish_charset') || ($app->{cfg}->DefaultLanguage eq 'ja' ? 'Shift_JIS' : 'ISO-8859-1');
        } elsif ($dbtype eq 'sqlite') {
            $param{path_required} = 1;
        } elsif ($dbtype eq 'sqlite2') {
            $param{path_required} = 1;
        }
    }

    my @DATA;
    my $drivers = $app->object_drivers;
    foreach my $key (keys %$drivers) {
        my $driver = $drivers->{$key};
        my $label = $driver->{label};
        my $link = 'http://search.cpan.org/dist/' . $driver->{dbd_package};
        $link =~ s/::/-/g;
        push @DATA, [ $driver->{dbd_package}, $driver->{dbd_version}, 0,
            $app->translate("The [_1] driver is required to use [_2].", $driver->{dbd_package}, $label),
            $label, $link ];
    }
    my ($missing, $dbmod) = $app->module_check(\@DATA);
    if (scalar(@$dbmod) == 0) {
        $param{missing_db_or_optional} = 1;
        $param{missing_db} = 1;
        $param{package_loop} = $missing;
        return $app->build_page("packages.tmpl", \%param);
    }
    foreach (@$dbmod) {
        if ($_->{module} eq 'DBD::mysql') {
            $_->{id} = 'mysql';
        } elsif ($_->{module} eq 'DBD::Pg') {
            $_->{id} = 'postgres';
        } elsif ($_->{module} eq 'DBD::Oracle') {
            $_->{id} = 'oracle';
        } elsif ($_->{module} eq 'DBD::ODBC1.13') {
            $_->{id} = 'mssqlserver';
        } elsif ($_->{module} eq 'DBD::ODBC1.14') {
            $_->{id} = 'umssqlserver';
        } elsif ($_->{module} eq 'DBD::SQLite') {
            $_->{id} = 'sqlite';
        } elsif ($_->{module} eq 'DBD::SQLite2') {
            $_->{id} = 'sqlite2';
        }
        if ($param{dbtype} && ($param{dbtype} eq $_->{id})) {
            $_->{selected} = 1;
        }
    }
    $param{db_loop} = $dbmod;
    $param{one_db} = $#$dbmod == 0; # db module is only one or not
    $param{config} = $app->serialize_config(%param);

    my $ok = 1;
    my ($err_msg, $err_more);
    if ($app->param('test')) {
        # if check successfully and push continue then goto next step
        $ok = 0;
        my $dbtype = $param{dbtype};
        my $driver = $drivers->{$dbtype}{config_package}
            if exists $drivers->{$dbtype};
        $param{dbserver_null} = 1 unless $param{dbserver};

        if ($driver) {
            my $cfg = $app->config;
            $cfg->ObjectDriver($driver);
            $cfg->Database($param{dbname}) if $param{dbname};
            $cfg->DBUser($param{dbuser}) if $param{dbuser};
            $cfg->DBPassword($param{dbpass}) if $param{dbpass};
            $cfg->DBPort($param{dbport}) if $param{dbport};
            $cfg->DBSocket($param{dbsocket}) if $param{dbsocket};
            $cfg->DBHost($param{dbserver}) 
              if $param{dbserver} && ( $param{dbtype} ne 'oracle' );
            $cfg->PublishCharset($param{publish_charset})
                if $param{publish_charset};
            if ($dbtype eq 'sqlite' || $dbtype eq 'sqlite2') {
                require File::Spec;
                my $db_file = $param{dbpath};
                if (!File::Spec->file_name_is_absolute($db_file)) {
                    $db_file = File::Spec->catfile($app->{mt_dir}, $db_file);
                }
                $cfg->Database($db_file) if  $db_file;
                $param{dbpath} = $db_file if  $db_file;
                if ($dbtype eq 'sqlite2') {
                    $cfg->UseSQLite2(1);
                }
            }
            # test loading of object driver with these parameters...
            require MT::ObjectDriverFactory;
            my $od = MT::ObjectDriverFactory->new($driver);
            eval { $od->rw_handle; }; ## to test connection
            if (my $err = $@) {
                $err_msg = $app->translate('An error occurred while attempting to connect to the database.  Check the settings and try again.');
                $err_more = $err;
            } else {
                $ok = 1;
            }
        }
        if ($ok) {
            $param{success} = 1;
            return $app->build_page("configure.tmpl", \%param);
        }
        $param{connect_error} = 1;
        $param{error} = $err_msg;
        $param{error_more} = $err_more;
    }

    $app->build_page("configure.tmpl", \%param);
}

my @Sendmail = qw( /usr/lib/sendmail /usr/sbin/sendmail /usr/ucblib/sendmail );

sub cfg_dir_conditions {
    my $app = shift;
    my ($param) = @_;
    if ($^O ne 'MSWin32') {
        # check for writable temp directory
        if (-w "/tmp") {
            return 0;
        }
    }
    return 1;
}

sub cfg_dir {
    my $app = shift;
    my %param = @_;

    $param{set_static_uri_to} = $app->param('set_static_uri_to');

    # set static web path
    $app->config->set('StaticWebPath', $param{set_static_uri_to});

    $param{config} = $app->serialize_config(%param);

    my $temp_dir;
    if ($app->param('test')) {
        $param{changed} = 1;
        if ($param{temp_dir}) {
            $temp_dir = $param{temp_dir};
        } else {
            $param{invalid_error} = 1;
        }
    } else {
        if ($param{temp_dir}) {
            $temp_dir = $param{temp_dir};
            $param{changed} = 1;
        } else {
            $temp_dir = $app->config->TempDir;
            if (!-d $temp_dir) {
                if ($^O eq 'MSWin32') {
                    $temp_dir = 'C:\Windows\Temp';
                }
            }
            $param{temp_dir} = $temp_dir;
        }
    }

    # check temp dir
    if ($temp_dir) {
        if (!-d $temp_dir) {
            $param{not_found_error} = 1;
        } elsif (!-w $temp_dir) {
            $param{not_write_error} = 1;
        } else {
            $param{success} = 1;
        }
    }

    $app->build_page("cfg_dir.tmpl", \%param);
}

sub optional {
    my $app = shift;
    my %param = @_;

    $param{set_static_uri_to} = $app->param('set_static_uri_to');

    # set static web path
    $app->config->set('StaticWebPath', $param{set_static_uri_to});

    # discover sendmail
    my $mgr = $app->config;
    my $sm_loc;
    for my $loc ($param{sendmail_path}, @Sendmail) {
        next unless $loc;
        $sm_loc = $loc, last if -x $loc && !-d $loc;
    }
    $param{sendmail_path} = $sm_loc || '';

    my $transfer;
    push @$transfer, {id => 'smtp', name => $app->translate('SMTP Server')};
    push @$transfer, {id => 'sendmail', name => $app->translate('Sendmail')};

    foreach(@$transfer){
        if ($_->{id} eq $param{mail_transfer}) {
            $_->{selected} = 1;
        }
    }

    $param{'use_'.$param{mail_transfer}} = 1;
    $param{mail_loop} = $transfer;
    $param{config} = $app->serialize_config(%param);

    my $ok = 1;
    my $err_msg;
    if ($app->param('test')) {
        $ok = 0;
        if ($param{test_mail_address}){
            my $cfg = $app->config;
            $cfg->MailTransfer($param{mail_transfer}) if $param{mail_transfer};
            $cfg->SMTPServer($param{smtp_server}) if $param{smtp_server};
            $cfg->SendMailPath($param{sendmail_path}) if $param{sendmail_path};
            my %head = (id => 'wizard_test',
                        To => $param{test_mail_address},
                        From => $cfg->EmailAddressMain || $param{test_mail_address},
                        Subject => $app->translate("Test email from Movable Type Configuration Wizard") );
            my $charset = $cfg->MailEncoding || $cfg->PublishCharset;
            $head{'Content-Type'} = qq(text/plain; charset="$charset");

            my $body = $app->translate("This is the test email sent by your new installation of Movable Type.");

            require MT::Mail;
            $ok = MT::Mail->send(\%head, $body);

            if ($ok){
                $param{success} = 1;
                return $app->build_page("optional.tmpl", \%param);
            }else{
                $err_msg = MT::Mail->errstr;
            }
        }
        
        $param{send_error} = 1;
        $param{error} = $err_msg;
    }
    $app->build_page("optional.tmpl", \%param);
}

sub seed {
    my $app = shift;
    my %param = @_;

    # input data unserialize to config
    unless (keys(%param)) {
        $param{config} = $app->param('config');
    }else{
        $param{config} = $app->serialize_config(%param);
    }

    $param{static_file_path} = $param{set_static_file_to};

    require URI;
    my $uri = URI->new($app->cgipath);
    $param{cgi_path} = $uri->path;
    $uri = URI->new($app->param->param('set_static_uri_to'));
    $param{static_web_path} = $uri->path;
    $param{static_uri} = $uri->path;
    my $drivers = $app->object_drivers;

    my $r_uri = $ENV{REQUEST_URI} || $ENV{SCRIPT_NAME};
    if ($ENV{MOD_PERL} || (($r_uri =~ m/\/mt-wizard\.(\w+)(\?.*)?$/) && ($1 ne 'cgi'))) {
        my $new = '';
        if ($ENV{MOD_PERL}) {
            $param{mod_perl} = 1;
        } else {
            $new = '.' . $1;
        }
        my @scripts;
        my $cfg = $app->config;
        my @cfg_keys = grep { /Script$/ } keys %{ $cfg->{__settings} };
        $param{mt_script} = $app->config->AdminScript;
        foreach my $key (@cfg_keys) {
            my $path = $cfg->get($key);
            $path =~ s/\.cgi$/$new/;
            if (-e File::Spec->catfile($app->{mt_dir}, $path)) {
                $param{mt_script} = $path if $key eq 'AdminScript';
                push @scripts, { name => $key, path => $path };
            }
        }
        if (@scripts) {
            $param{script_loop} = \@scripts if @scripts;
            $param{non_cgi_suffix} = 1;
        }
    } else {
        $param{mt_script} = $app->config->AdminScript;
    }

    # unserialize database configuration
    if (my $dbtype = $param{dbtype}) {
        if ($dbtype eq 'sqlite') {
            $param{use_dbms} = 1;
            $param{object_driver} = 'DBI::sqlite';
            $param{database_name} = $param{dbpath};
        } elsif ($dbtype eq 'sqlite2') {
            $param{use_dbms} = 1;
            $param{use_sqlite2} = 1;
            $param{object_driver} = 'DBI::sqlite';
            $param{database_name} = $param{dbpath};
        } else {
            $param{use_dbms} = 1;
            $param{object_driver} = $drivers->{$dbtype}{config_package};
            $param{database_name} = $param{dbname};
            $param{database_username} = $param{dbuser};
            $param{database_password} = $param{dbpass} if $param{dbpass};
            $param{database_host} = $param{dbserver}
                if ($dbtype ne 'oracle') && $param{dbserver};
            $param{database_port} = $param{dbport} if $param{dbport};
            $param{database_socket} = $param{dbsocket} if $param{dbsocket};
            $param{use_setnames} =  $param{setnames} if $param{setnames};
            $param{publish_charset} =  $param{publish_charset}
                if $param{publish_charset};
        }
    }

    if ($param{temp_dir} eq $app->config->TempDir) {
        $param{temp_dir} = '';
    }

    # authentication configuration
    $param{help_url} = $app->help_url();

    my $tmpls = $app->registry("wizard_template") || [];

    my @tmpl_loop;
    require MT::Template;
    foreach my $code (@$tmpls) {
        if ($code = $app->handler_to_coderef($code)) {
            push @tmpl_loop, { tmpl_code => $code };
        }
    }

    $param{tmpl_loop} = \@tmpl_loop;

    my $data = $app->build_page("mt-config.tmpl", \%param);

    my $cfg_file = File::Spec->catfile($app->{mt_dir}, 'mt-config.cgi');
    if (!-f $cfg_file) {
        # write!
        if (open OUT, ">$cfg_file") {
            print OUT $data;
            close OUT;
        }
        $param{config_created} = 1 if -f $cfg_file;
        $param{config_file} = $cfg_file;
        if ((!-f $cfg_file) && $app->param->param('manually')) {
            $param{file_not_found} = 1;
            $param{manually} = 1;
        }
    } elsif($app->param->param('manually')) {
        $param{config_created} = 1 if -f $cfg_file;
        $param{config_file} = $cfg_file;
    }

    # back to the complete screen
    return $app->build_page("complete.tmpl", \%param);
}

sub serialize_config {
    my $app = shift;
    my %param = @_;
 
    require MT::Serialize;
    my $ser = MT::Serialize->new('MT');
    my $keys = $app->config_keys();
    my %set;
    foreach my $key (keys %$keys) {
        foreach my $p (@{$keys->{$key}}) {
            $set{$p} = $param{$p};
        }
    }
    my $set = \%set;
    unpack 'H*', $ser->serialize(\$set);
}

sub unserialize_config {
    my $app = shift;
    my $data = $app->param('config');
    my %config;
    if ($data) {
        $data = pack 'H*', $data;
        require MT::Serialize;
        my $ser = MT::Serialize->new('MT');
        my $thawed = $ser->unserialize($data);
        if ($thawed) {
            my $saved_cfg = $$thawed;
            if (keys %$saved_cfg) {
                foreach my $p (keys %$saved_cfg) {
                    $config{$p} = $saved_cfg->{$p};
                }
            }
        }
    }
    %config;
}

sub cgipath {
    my $app = shift;

    # these work for Apache... need to test for IIS...
    my $host = $ENV{SERVER_NAME} || $ENV{HTTP_HOST};
    $host =~ s/:\d+//; # eliminate any port that may be present
    my $port = $ENV{SERVER_PORT};
    # REQUEST_URI for CGI-compliant servers; SCRIPT_NAME for IIS.
    my $uri = $ENV{REQUEST_URI} || $ENV{SCRIPT_NAME};
    $uri =~ s!/mt-wizard(\.f?cgi|\.f?pl)(\?.*)?$!/!;

    my $cgipath = '';
    $cgipath = $port == 443 ? 'https' : 'http';
    $cgipath .= '://' . $host;
    $cgipath .= ($port == 443 || $port == 80) ? '' : ':' . $port;
    $cgipath .= $uri;

    $cgipath;
}

sub module_check {
    my $self = shift;
    my $modules = shift;
    my (@missing, @ok);
    foreach my $ref (@$modules) {
        my($mod, $ver, $req, $desc, $name, $link) = @$ref;
        eval("use $mod" . ($ver ? " $ver;" : ";"));
        $mod .= $ver if $mod eq 'DBD::ODBC';
        if ($@) {
            push @missing, { module => $mod,
                             version => $ver,
                             required => $req,
                             description => $desc,
                             label => $name,
			     link => $link };
        } else {
            push @ok, { module => $mod,
                        version => $ver,
                        required => $req,
                        description => $desc,
                        label => $name,
		        link => $link };
        }
    }
    (\@missing, \@ok);
}

sub static_path {
    my $app = shift;
    my $static_path = '';

    if ($app->config->StaticWebPath ne '') {
        $static_path = $app->config->StaticWebPath;
        $static_path .= '/' unless $static_path =~ m!/$!;
        return $static_path;
    }
    return $app->mt_static_exists ? $app->cgipath.'mt-static/' : '';
}

sub mt_static_exists {
    my $app = shift;
    return (-f File::Spec->catfile($app->{mt_dir}, "mt-static", "mt.js")) ? 1 : 0;
}

sub is_valid_static_path {
    my $app = shift;
    my ($static_uri) = @_;

    my $path;
    if ($static_uri =~ m/^http/i) {
        $path = $static_uri . 'mt.js';
    } elsif($static_uri =~ m#^/#) {
        my $host = $ENV{SERVER_NAME} || $ENV{HTTP_HOST};
        $host =~ s/:\d+//; # eliminate any port that may be present
        my $port = $ENV{SERVER_PORT};
        $path = $port == 443 ? 'https' : 'http';
        $path .= '://' . $host;
        $path .= ($port == 443 || $port == 80) ? '' : ':' . $port;
        $path .= $static_uri . 'mt.js';
    }
    else {
        $path = $app->cgipath . $static_uri . 'mt.js';
    }

    require LWP::UserAgent;
    my $ua = LWP::UserAgent->new;
    my $request = HTTP::Request->new(GET => $path);
    my $response = $ua->request($request);
    $response->is_success and ($response->content_length() != 0) && ($response->content =~ m/function\s+openManual/s);
}
1;
__END__

=head1 NAME

MT::App::Wizard

=head1 METHODS

TODO

=head1 AUTHOR & COPYRIGHT

Please see L<MT/AUTHOR & COPYRIGHT>.

=cut
