path: root/lib/AdminPanel/Module/Hosts.pm

# vim: set et ts=4 sw=4:
#*****************************************************************************
# 
#  Copyright (c) 2013-2014 Matteo Pasotti <matteo.pasotti@gmail.com>
# 
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License version 2, as
#  published by the Free Software Foundation.
# 
#  This program 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 this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# 
#*****************************************************************************

package AdminPanel::Module::Hosts;

use Modern::Perl 2011;
use autodie;
use Moose;
use POSIX qw(ceil);
use utf8;

use Glib;
use yui;
use AdminPanel::Shared;
use AdminPanel::Shared::Hosts;

extends qw( AdminPanel::Module );


has '+icon' => (
    default => "/usr/lib/libDrakX/icons/IC-Dhost-48.png"
);

has '+name' => (
    default => "Hostmanager",
);

=head1 VERSION

Version 1.0.0

=cut

our $VERSION = '1.0.0';

has 'dialog' => (
    is => 'rw',
    init_arg => undef
);

has 'table' => (
    is => 'rw',
    init_arg => undef
);

has 'cfgHosts' => (
    is => 'rw',
    init_arg => undef
);

#=============================================================

=head2 start

=head3 INPUT

    $self: this object

=head3 DESCRIPTION

    This method extends Module::start and is invoked to
    start  host manager

=cut

#=============================================================
sub start {
    my $self = shift;

    $self->_manageHostsDialog();
};


#=============================================================

=head2 _addHostDialog

=head3 INPUT

    $self: this object

=head3 DESCRIPTION

This subroutine creates the Host dialog to add host definitions 

=cut

#=============================================================
sub _manipulateHostDialog {
    my $self = shift;

    my $headerString = shift();
    my $boolEdit = shift();

    my $hostIpString = "";
    my $hostNameString = "";
    my $hostAliasesString = "";

    if($boolEdit == 1){
        $hostIpString = shift();
        $hostNameString = shift();
        $hostAliasesString = shift();
    }

    my $factory  = yui::YUI::widgetFactory;
    my $dlg = $factory->createPopupDialog();
    my $layout = $factory->createVBox($dlg);

    my $hbox_header = $factory->createHBox($layout);
    my $vbox_content = $factory->createVBox($layout);
    my $hbox_footer = $factory->createHBox($layout);

    # header
    my $labelDescription = $factory->createLabel($hbox_header,$headerString);

    # content
    my $firstHbox = $factory->createHBox($vbox_content);
    my $secondHbox = $factory->createHBox($vbox_content);
    my $thirdHbox = $factory->createHBox($vbox_content);

    my $labelIPAddress = $factory->createLabel($firstHbox,"IP Address");
    my $labelHostName  = $factory->createLabel($secondHbox,"Hostname");
    my $labelHostAlias = $factory->createLabel($thirdHbox,"Host aliases");
    $labelIPAddress->setWeight($yui::YD_HORIZ, 10);
    $labelHostName->setWeight($yui::YD_HORIZ, 10);
    $labelHostAlias->setWeight($yui::YD_HORIZ, 10);

    my $textIPAddress = $factory->createInputField($firstHbox,"");
    my $textHostName = $factory->createInputField($secondHbox,"");
    my $textHostAlias = $factory->createInputField($thirdHbox,"");
    $textIPAddress->setWeight($yui::YD_HORIZ, 30);
    $textHostName->setWeight($yui::YD_HORIZ, 30);
    $textHostAlias->setWeight($yui::YD_HORIZ, 30);

    if($boolEdit == 1){
        $textIPAddress->setValue($hostIpString);
        $textHostName->setValue($hostNameString);
        $textHostAlias->setValue($hostAliasesString);
    }

    # footer
    my $cancelButton = $factory->createPushButton($factory->createLeft($hbox_footer),"Cancel");
    my $okButton = $factory->createPushButton($factory->createRight($hbox_footer),"OK");

    while(1){
        my $event     = $dlg->waitForEvent();
        my $eventType = $event->eventType();

        #event type checking
        if ($eventType == $yui::YEvent::CancelEvent) {
            last;
        }
        elsif ($eventType == $yui::YEvent::WidgetEvent) {
            # widget selected
            my $widget = $event->widget();
            if ($widget == $cancelButton) {
                last;
            }
            elsif($widget == $okButton) {
                my $res = undef;
                my @hosts_toadd;
                push @hosts_toadd, $textHostName->value();
                if(trim($textHostAlias->value()) ne ""){
                    push @hosts_toadd, $textHostAlias->value();
                }
                print "@hosts_toadd\n";
                if($boolEdit == 0){
                    $res = $self->cfgHosts->_insertHost($textIPAddress->value(),[@hosts_toadd]);
                }else{
                    $res = $self->cfgHosts->_modifyHost($textIPAddress->value(),[@hosts_toadd]);
                }
                $res = $self->cfgHosts->_writeHosts();
                print "Write result: $res\n";
                last;
            }
        }
    }

    destroy $dlg;
}

sub _addHostDialog {
    my $self = shift();
    return $self->_manipulateHostDialog("Add the information",0);
}

sub _edtHostDialog {
    my $self = shift();
    my $hostIp = shift();
    my $hostName = shift();
    my $hostAliases = shift();
    return $self->_manipulateHostDialog("Modify the information",1,$hostIp,$hostName,$hostAliases);
}

#=============================================================

=head2 setupTable

=head3 INPUT

    $self: this object

    $data: reference to the array containaing the host data to show into the table

=head3 DESCRIPTION

This subroutine populates a previously created YTable with the hosts data
retrieved by the Config::Hosts module

=cut

#=============================================================
sub setupTable {
    my $self = shift();
    
    my @hosts = $self->cfgHosts->_getHosts();
    # clear table
    $self->table->deleteAllItems();
    foreach my $host (@hosts){
        my $tblItem;
        my $aliases = join(',',@{$host->{'hosts'}});
        if(scalar(@{$host->{'hosts'}}) > 1){
            $aliases =~s/^$host->{'hosts'}[0]\,*//g;
        }elsif(scalar(@{$host->{'hosts'}}) == 1){
            $aliases = "";
        }
        $tblItem = new yui::YTableItem($host->{'ip'},$host->{'hosts'}[0],$aliases);
        $self->table->addItem($tblItem);
    }
}

sub _manageHostsDialog {
    my $self = shift;

    ## TODO fix for adminpanel
    my $appTitle = yui::YUI::app()->applicationTitle();
    my $appIcon = yui::YUI::app()->applicationIcon();
    ## set new title to get it in dialog
    my $newTitle = "Manage hosts definitions";
    yui::YUI::app()->setApplicationTitle($newTitle);

    my $factory  = yui::YUI::widgetFactory;
    my $optional = yui::YUI::optionalWidgetFactory;
    

    $self->dialog($factory->createMainDialog());
    my $layout    = $factory->createVBox($self->dialog);

    my $hbox_header = $factory->createHBox($layout);
    my $headLeft = $factory->createHBox($factory->createLeft($hbox_header));
    my $headRight = $factory->createHBox($factory->createRight($hbox_header));

    my $logoImage = $factory->createImage($headLeft, $appIcon);
    my $labelAppDescription = $factory->createLabel($headRight,$newTitle); 
    $logoImage->setWeight($yui::YD_HORIZ,0);
    $labelAppDescription->setWeight($yui::YD_HORIZ,3);

    my $hbox_content = $factory->createHBox($layout);

    my $tableHeader = new yui::YTableHeader();
    $tableHeader->addColumn("IP Address");
    $tableHeader->addColumn("Hostname");
    $tableHeader->addColumn("Host Aliases");
    my $leftContent = $factory->createLeft($hbox_content);
    $leftContent->setWeight($yui::YD_HORIZ,45);
    $self->table($factory->createTable($leftContent,$tableHeader));

    # initialize Config::Hosts
    $self->cfgHosts(AdminPanel::Shared::Hosts->new());
    $self->setupTable();
    
    my $rightContent = $factory->createRight($hbox_content);
    $rightContent->setWeight($yui::YD_HORIZ,10);
    my $topContent = $factory->createTop($rightContent);
    my $vbox_commands = $factory->createVBox($topContent);
    my $addButton = $factory->createPushButton($factory->createHBox($vbox_commands),"Add");
    my $edtButton = $factory->createPushButton($factory->createHBox($vbox_commands),"Edit");
    my $remButton = $factory->createPushButton($factory->createHBox($vbox_commands),"Remove");
    $addButton->setWeight($yui::YD_HORIZ,1);
    $edtButton->setWeight($yui::YD_HORIZ,1);
    $remButton->setWeight($yui::YD_HORIZ,1);

    my $hbox_foot = $factory->createHBox($layout);
    my $vbox_foot_left = $factory->createVBox($factory->createLeft($hbox_foot));
    my $vbox_foot_right = $factory->createVBox($factory->createRight($hbox_foot));
    my $aboutButton = $factory->createPushButton($vbox_foot_left,"About");
    my $cancelButton = $factory->createPushButton($vbox_foot_right,"Cancel");
    my $okButton = $factory->createPushButton($vbox_foot_right,"OK");

    # main loop
    while(1) {
        my $event     = $self->dialog->waitForEvent();
        my $eventType = $event->eventType();
        
        #event type checking
        if ($eventType == $yui::YEvent::CancelEvent) {
            last;
        }
        elsif ($eventType == $yui::YEvent::WidgetEvent) {
### Buttons and widgets ###
            my $widget = $event->widget();
            if ($widget == $cancelButton) {
                last;
            }
            elsif ($widget == $addButton) {
                $self->_addHostDialog();
                $self->setupTable();
            }
            elsif ($widget == $edtButton) {
                my $tblItem = yui::toYTableItem($self->table->selectedItem());
                if($tblItem->cellCount() >= 3){
                    $self->_edtHostDialog($tblItem->cell(0)->label(),$tblItem->cell(1)->label(),$tblItem->cell(2)->label());
                }else{
                    $self->_edtHostDialog($tblItem->cell(0)->label(),$tblItem->cell(1)->label(),"");
                }
                $self->setupTable();
            }
            elsif ($widget == $remButton) {
                # implement deletion dialog
                if(AdminPanel::Shared::ask_YesOrNo("Confirmation","Are you sure to drop this host?") == 1){
                    my $tblItem = yui::toYTableItem($self->table->selectedItem());
                    # drop the host using the ip
                    $self->cfgHosts->_dropHost($tblItem->cell(0)->label());
                    # write changes
                    $self->cfgHosts->_writeHosts();
                    $self->setupTable();
                }
            }elsif ($widget == $aboutButton) {
                AdminPanel::Shared::AboutDialog({
                    name => $appTitle,
                    version => $VERSION,
                    copyright => "Copyright (c) 2013-2014 by Matteo Pasotti",
                    license => $AdminPanel::Shared::License,
                    comments => "Graphical manager for hosts definitions",
                    website => "http://gitweb.mageia.org/software/adminpanel",
                    website_label => "Mageia",
                    authors => "Matteo Pasotti <matteo.pasotti\@gmail.com>"
                    }
                );
            }elsif ($widget == $okButton) {
                # write changes
                $self->cfgHosts->_writeHosts();
                last;
            }
        }
    }

    $self->dialog->destroy() ;

    #restore old application title
    yui::YUI::app()->setApplicationTitle($appTitle);
}

1;