<?php
/**
 * Plugin management functions
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Christopher Smith <chris@jalakai.co.uk>
 */
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();

// todo
// - maintain a history of file modified
// - allow a plugin to contain extras to be copied to the current template (extra/tpl/)
// - to images (lib/images/) [ not needed, should go in lib/plugin/images/ ]

if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'admin.php');
require_once(DOKU_PLUGIN."/plugin/classes/ap_manage.class.php");

//--------------------------[ GLOBALS ]------------------------------------------------
// note: probably should be dokuwiki wide globals, where they can be accessed by pluginutils.php
// global $plugin_types;
// $plugin_types = array('syntax', 'admin');

// plugins that are an integral part of dokuwiki, they shouldn't be disabled or deleted
global $plugin_protected;
$plugin_protected = array('acl','plugin','config','info','usermanager','revert');

/**
 * All DokuWiki plugins to extend the admin function
 * need to inherit from this class
 */
class admin_plugin_plugin extends DokuWiki_Admin_Plugin {

    var $disabled = 0;
    var $plugin = '';
    var $cmd = '';
    var $handler = NULL;

    var $functions = array('delete','update',/*'settings',*/'info');  // require a plugin name
    var $commands = array('manage','download','enable');              // don't require a plugin name
    var $plugin_list = array();

    var $msg = '';
    var $error = '';

    function admin_plugin_plugin() {
        global $conf;
        $this->disabled = (isset($conf['pluginmanager']) && ($conf['pluginmanager'] == 0));
    }

    /**
     * return some info
     */
    function getInfo(){
        $disabled = ($this->disabled) ? '(disabled)' : '';

        return array(
                'author' => 'Christopher Smith',
                'email'  => 'chris@jalakai.co.uk',
                'date'   => '2009-11-11',
                'name'   => 'Plugin Manager',
                'desc'   => "Manage Plugins, including automated plugin installer $disabled",
                'url'    => 'http://www.dokuwiki.org/plugin:plugin',
                );
    }


    /**
     * return sort order for position in admin menu
     */
    function getMenuSort() {
        return 20;
    }

    /**
     * handle user request
     */
    function handle() {
        // enable direct access to language strings
        $this->setupLocale();


        $fn = $_REQUEST['fn'];
        if (is_array($fn)) {
            $this->cmd = key($fn);
            $this->plugin = is_array($fn[$this->cmd]) ? key($fn[$this->cmd]) : null;
        } else {
            $this->cmd = $fn;
            $this->plugin = null;
        }
        $this->_get_plugin_list();

        // verify $_REQUEST vars
        if (in_array($this->cmd, $this->commands)) {
            $this->plugin = '';
        } else if (!in_array($this->cmd, $this->functions) || !in_array($this->plugin, $this->plugin_list)) {
            $this->cmd = 'manage';
            $this->plugin = '';
        }

        if(($this->cmd != 'manage' || $this->plugin != '') && !checkSecurityToken()){
            $this->cmd = 'manage';
            $this->plugin = '';
        }

        // create object to handle the command
        $class = "ap_".$this->cmd;
        @require_once(DOKU_PLUGIN."/plugin/classes/$class.class.php");
        if (!class_exists($class)){
            $class = 'ap_manage';
        }

        $this->handler = & new $class($this, $this->plugin);
        $this->msg = $this->handler->process();

    }

    /**
     * output appropriate html
     */
    function html() {
        // enable direct access to language strings
        $this->setupLocale();
        $this->_get_plugin_list();

        if ($this->handler === NULL) $this->handler = & new ap_manage($this, $this->plugin);

        ptln('<div id="plugin__manager">');
        $this->handler->html();
        ptln('</div><!-- #plugin_manager -->');
    }

    /**
     * Returns a list of all plugins, including the disabled ones
     */
    function _get_plugin_list() {
        if (empty($this->plugin_list)) {
            $list = plugin_list('',true);     // all plugins, including disabled ones
            sort($list);
            trigger_event('PLUGIN_PLUGINMANAGER_PLUGINLIST',$list);
            $this->plugin_list = $list;
        }
        return $this->plugin_list;
    }

}