<?php
/**
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008-2011, StatusNet, Inc.
 *
 * Show version information for this software and plugins
 *
 * PHP version 5
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @category Info
 * @package  GNUsocial
 * @author   Evan Prodromou <evan@status.net>
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
 * @link     http://status.net/
 */

if (!defined('GNUSOCIAL')) { exit(1); }

/**
 * Version info page
 *
 * A page that shows version information for this site. Helpful for
 * debugging, for giving credit to authors, and for linking to more
 * complete documentation for admins.
 *
 * @category Info
 * @package  GNUsocial
 * @author   Evan Prodromou <evan@status.net>
 * @author   Craig Andrews <candrews@integralblue.com>
 * @copyright 2009-2011 Free Software Foundation, Inc http://www.fsf.org
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
 * @link     http://status.net/
 */
class VersionAction extends Action
{
    var $pluginVersions = array();

    /**
     * Return true since we're read-only.
     *
     * @param array $args other arguments
     *
     * @return boolean is read only action?
     */
    function isReadOnly($args)
    {
        return true;
    }

    /**
     * Returns the page title
     *
     * @return string page title
     */
    function title()
    {
        // TRANS: Title for version page. %1$s is the engine name, %2$s is the engine version.
        return sprintf(_('%1$s %2$s'), GNUSOCIAL_ENGINE, GNUSOCIAL_VERSION);
    }

    /**
     * Prepare to run
     *
     * Fire off an event to let plugins report their
     * versions.
     *
     * @param array $args array misc. arguments
     *
     * @return boolean true
     */
    protected function prepare(array $args=array())
    {
        parent::prepare($args);

        Event::handle('PluginVersion', array(&$this->pluginVersions));

        return true;
    }

    /**
     * Execute the action
     *
     * Shows a page with the version information in the
     * content area.
     *
     * @param array $args ignored.
     *
     * @return void
     */
    protected function handle()
    {
        parent::handle();
        $this->showPage();
    }


    /*
    * Override to add h-entry, and content-inner classes
    *
    * @return void
    */
    function showContentBlock()
     {
         $this->elementStart('div', array('id' => 'content', 'class' => 'h-entry'));
         $this->showPageTitle();
         $this->showPageNoticeBlock();
         $this->elementStart('div', array('id' => 'content_inner',
                                          'class' => 'e-content'));
         // show the actual content (forms, lists, whatever)
         $this->showContent();
         $this->elementEnd('div');
         $this->elementEnd('div');
     }

    /*
    * Overrride to add entry-title class
    *
    * @return void
    */
    function showPageTitle() {
        $this->element('h1', array('class' => 'entry-title'), $this->title());
    }


    /**
     * Show version information
     *
     * @return void
     */
    function showContent()
    {
        $this->elementStart('p');

        // TRANS: Content part of engine version page.
        // TRANS: %1$s is the engine name (GNU social) and %2$s is the GNU social version.
        $this->raw(sprintf(_('This site is powered by %1$s version %2$s, '.
                             'Copyright 2010 Free Software Foundation, Inc.'),
                           XMLStringer::estring('a', array('href' => GNUSOCIAL_ENGINE_URL),
                                                // TRANS: Engine name.
                                                GNUSOCIAL_ENGINE),
                           GNUSOCIAL_VERSION));
        $this->elementEnd('p');

        // TRANS: Header for engine software contributors section on the version page.
        $this->element('h2', null, _('Contributors'));

        $this->elementStart('p');
        $this->raw(sprintf('See %s for a full list of contributors.',
                           XMLStringer::estring('a', array('href' => 'https://notabug.org/diogo/gnu-social/src/nightly/CREDITS.md'),
                                                'https://notabug.org/diogo/gnu-social/src/nightly/CREDITS.md')));
        $this->elementEnd('p');

        // TRANS: Header for engine software license section on the version page.
        $this->element('h2', null, _('License'));

        $this->element('p', null,
                       // TRANS: Content part of engine software version page. %1s is engine name
                       sprintf(_('%1$s is free software: you can redistribute it and/or modify '.
                         'it under the terms of the GNU Affero General Public License as published by '.
                         'the Free Software Foundation, either version 3 of the License, or '.
                         '(at your option) any later version.'), GNUSOCIAL_ENGINE));

        $this->element('p', null,
                       // TRANS: Content part of engine software version page.
                       _('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 Affero General Public License for more details.'));

        $this->elementStart('p');
        // TRANS: Content part of engine version page.
        // TRANS: %s is a link to the AGPL license with link description "http://www.gnu.org/licenses/agpl.html".
        $this->raw(sprintf(_('You should have received a copy of the GNU Affero General Public License '.
                             'along with this program.  If not, see %s.'),
                           XMLStringer::estring('a', array('href' => 'https://www.gnu.org/licenses/agpl.html'),
                                                'https://www.gnu.org/licenses/agpl.html')));
        $this->elementEnd('p');

        // XXX: Theme information?

        if (count($this->pluginVersions)) {
            // TRANS: Header for engine plugins section on the version page.
            $this->element('h2', null, _('Plugins'));

            $this->elementStart('table', array('id' => 'plugins_enabled'));

            $this->elementStart('thead');
            $this->elementStart('tr');
            // TRANS: Column header for plugins table on version page.
            $this->element('th', array('id' => 'plugin_name'), _m('HEADER','Name'));
            // TRANS: Column header for plugins table on version page.
            $this->element('th', array('id' => 'plugin_version'), _m('HEADER','Version'));
            // TRANS: Column header for plugins table on version page.
            $this->element('th', array('id' => 'plugin_authors'), _m('HEADER','Author(s)'));
            // TRANS: Column header for plugins table on version page.
            $this->element('th', array('id' => 'plugin_description'), _m('HEADER','Description'));
            $this->elementEnd('tr');
            $this->elementEnd('thead');

            $this->elementStart('tbody');
            foreach ($this->pluginVersions as $plugin) {
                $this->elementStart('tr');
                if (array_key_exists('homepage', $plugin)) {
                    $this->elementStart('th');
                    $this->element('a', array('href' => $plugin['homepage']),
                                   $plugin['name']);
                    $this->elementEnd('th');
                } else {
                    $this->element('th', null, $plugin['name']);
                }

                $this->element('td', null, $plugin['version']);

                if (array_key_exists('author', $plugin)) {
                    $this->element('td', null, $plugin['author']);
                }

                if (array_key_exists('rawdescription', $plugin)) {
                    $this->elementStart('td');
                    $this->raw($plugin['rawdescription']);
                    $this->elementEnd('td');
                } else if (array_key_exists('description', $plugin)) {
                    $this->element('td', null, $plugin['description']);
                }
                $this->elementEnd('tr');
            }
            $this->elementEnd('tbody');
            $this->elementEnd('table');
        }

    }
}