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<?php
/**
 * This file is part of b2evolution - {@link http://b2evolution.net/}
 * See also {@link https://github.com/b2evolution/b2evolution}.
 *
 * @license GNU GPL v2 - {@link http://b2evolution.net/about/gnu-gpl-license}
 *
 * @copyright (c)2009-2016 by Francois Planque - {@link http://fplanque.com/}
 * Parts of this file are copyright (c)2009 by The Evo Factory - {@link http://www.evofactory.com/}.
 *
 * Released under GNU GPL License - {@link http://b2evolution.net/about/gnu-gpl-license}
 *
 * @package maintenance
 */
if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page directly.' );

load_class( '_core/ui/_table.class.php', 'Table' );

/**
 * @var action
 */
global $action;

global $updates, $upgrade_path, $admin_url, $auto_upgrade_from_any_url;

$Form = new Form( NULL, 'upgrade_form', 'post', 'compact' );

$Form->begin_form( 'fform', TB_('Check for updates') );

if( empty( $updates ) )
{ // No new updates
    ?><div class="action_messages">
        <div class="log_error" style="text-align:center;font-weight:bold"><?php echo TB_('There are no new updates.'); ?></div>
    </div><?php

    $Form->end_form();
}
else
{ // Display a form to download new update
    $update = $updates[0];

    $Form->info( TB_('Update'), $update['name'] );
    $Form->info( TB_('Description'), $update['description'] );
    if( $update['version'] !== '' )
    {    // Display version only when newer is allowed by the upgrade server:
        $Form->info( TB_('Version'), $update['version'] );
    }

    $upgrade_is_allowed = false;
    if( $auto_upgrade_from_any_url )
    {    // Allow to upgrade from any URL:
        $Form->text_input( 'upd_url', ( get_param( 'upd_url' ) != '' ? get_param( 'upd_url' ) : $update['url'] ), 90,
            TB_('URL'), '<br/><span class="note">'.TB_('You <i>might</i> replace this with a different URL in case you want to upgrade to a custom version.').'</span>',
            array( 'maxlength' => 300, 'required' => true, 'class' => 'large' ) );
        $upgrade_is_allowed = true;
    }
    elseif( ! empty( $update['url'] ) )
    {    // Allow to upgrade only from URL provided by server:
        $upgrade_is_allowed = true;
    }

    $buttons = array();
    if( $upgrade_is_allowed )
    {    // Display button to upgrade only when it is allowed:
        $Form->add_crumb( 'upgrade_started' );
        $Form->hiddens_by_key( get_memorized( 'action' ) );

        $buttons[] = array( 'submit', 'actionArray[download]', TB_('Continue'), 'SaveButton' );
    }

    $Form->end_form( $buttons );
}

// Display a list of already downloaded packages:
$Table = new Table( 'Results', 'upgrade' );

$Table->title = TB_('Already Downloaded').get_manual_link( 'auto-upgrade-already-downloaded' );

$Table->cols = array(
    array( 'th' => TB_('Zip archive').'/'.TB_('Folder') ),
    array( 'th' => TB_('Actions'), 'td_class' => 'shrinkwrap' ),
);

// Find all ZIP files and folders in the _upgrade folder:
$downloaded_files = array();
if( $dir_handle = @opendir( $upgrade_path ) )
{
    while( ( $file = readdir( $dir_handle ) ) !== false )
    {
        if( $file != '.' && $file != '..' &&
            ( is_dir( $upgrade_path.$file ) || preg_match( '#\.zip$#i', $file ) ) )
        {    // Only folder or ZIP file:
            $downloaded_files[] = $file;
        }
    }
    closedir( $dir_handle );
}

$Table->display_init();

echo $Table->params['before'];

// TITLE:
$Table->display_head();

if( empty( $downloaded_files ) )
{    // No files to import:
    $Table->total_pages = 0;
    $Table->no_results_text = TB_('No files found.');

    // BODY START:
    $Table->display_body_start();
    $Table->display_list_start();
    $Table->display_list_end();
    // BODY END:
    $Table->display_body_end();
}
else
{    // Display the files to import in table:

    // TABLE START:
    $Table->display_list_start();

    // COLUMN HEADERS:
    $Table->display_col_headers();
    // BODY START:
    $Table->display_body_start();

    // Sort files:
    natsort( $downloaded_files );
    $downloaded_files = array_reverse( $downloaded_files );

    foreach( $downloaded_files as $file )
    {
        $Table->display_line_start();

        // Zip archive/Folder
        $Table->display_col_start();
        echo $file;
        $Table->display_col_end();

        $use_file_url = $admin_url.'?ctrl=upgrade&amp;action=';
        if( ! is_dir( $upgrade_path.$file ) )
        {
            $use_file_url .= 'unzip&amp;upd_file='.urlencode( $file ).'&amp;'.url_crumb( 'upgrade_downloaded' );
            $confirm_message = TS_('Are you sure want to delete this file?');
        }
        else
        {
            $use_file_url .= 'ready&amp;upd_dir='.urlencode( $file ).'&amp;'.url_crumb( 'upgrade_is_ready' );
            $confirm_message = TS_('Are you sure want to delete this folder?');
        }
        $del_file_url = $admin_url.'?ctrl=upgrade&amp;action=delete&amp;file='.urlencode( $file ).'&amp;'.url_crumb( 'upgrade_delete' );

        // File date
        $Table->display_col_start();
        echo '<a href="'.$use_file_url.'" class="btn btn-warning btn-xs">'.TB_('Use this...').'</a> ';
        echo '<a href="'.$del_file_url.'" class="btn btn-danger btn-xs" onclick="return confirm(\''.$confirm_message.'\')">'.TB_('Delete').'</a> ';
        $Table->display_col_end();

        $Table->display_line_end();

        evo_flush();
    }

    // BODY END:
    $Table->display_body_end();

    // TABLE END:
    $Table->display_list_end();
}

echo $Table->params['after'];
?>