<?php
/**
 * Load all internal libraries and setup class autoloader
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */

use dokuwiki\Extension\PluginController;

// setup class autoloader
spl_autoload_register('load_autoload');

// require all the common libraries
// for a few of these order does matter
require_once(DOKU_INC.'inc/defines.php');
require_once(DOKU_INC.'inc/actions.php');
require_once(DOKU_INC.'inc/changelog.php');
require_once(DOKU_INC.'inc/common.php');
require_once(DOKU_INC.'inc/confutils.php');
require_once(DOKU_INC.'inc/pluginutils.php');
require_once(DOKU_INC.'inc/form.php');
require_once(DOKU_INC.'inc/fulltext.php');
require_once(DOKU_INC.'inc/html.php');
require_once(DOKU_INC.'inc/httputils.php');
require_once(DOKU_INC.'inc/indexer.php');
require_once(DOKU_INC.'inc/infoutils.php');
require_once(DOKU_INC.'inc/io.php');
require_once(DOKU_INC.'inc/mail.php');
require_once(DOKU_INC.'inc/media.php');
require_once(DOKU_INC.'inc/pageutils.php');
require_once(DOKU_INC.'inc/parserutils.php');
require_once(DOKU_INC.'inc/search.php');
require_once(DOKU_INC.'inc/template.php');
require_once(DOKU_INC.'inc/toolbar.php');
require_once(DOKU_INC.'inc/utf8.php');
require_once(DOKU_INC.'inc/auth.php');
require_once(DOKU_INC.'inc/compatibility.php');
require_once(DOKU_INC.'inc/deprecated.php');
require_once(DOKU_INC.'inc/legacy.php');

/**
 * spl_autoload_register callback
 *
 * Contains a static list of DokuWiki's core classes and automatically
 * require()s their associated php files when an object is instantiated.
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @todo   add generic loading of renderers and auth backends
 *
 * @param string $name
 *
 * @return bool
 */
function load_autoload($name){
    static $classes = null;
    if($classes === null) $classes = array(
        'Diff'                  => DOKU_INC.'inc/DifferenceEngine.php',
        'UnifiedDiffFormatter'  => DOKU_INC.'inc/DifferenceEngine.php',
        'TableDiffFormatter'    => DOKU_INC.'inc/DifferenceEngine.php',
        'cache'                 => DOKU_INC.'inc/cache.php',
        'cache_parser'          => DOKU_INC.'inc/cache.php',
        'cache_instructions'    => DOKU_INC.'inc/cache.php',
        'cache_renderer'        => DOKU_INC.'inc/cache.php',
        'Input'                 => DOKU_INC.'inc/Input.class.php',
        'JpegMeta'              => DOKU_INC.'inc/JpegMeta.php',
        'SimplePie'             => DOKU_INC.'inc/SimplePie.php',
        'FeedParser'            => DOKU_INC.'inc/FeedParser.php',
        'SafeFN'                => DOKU_INC.'inc/SafeFN.class.php',
        'Sitemapper'            => DOKU_INC.'inc/Sitemapper.php',
        'Mailer'                => DOKU_INC.'inc/Mailer.class.php',

        'Doku_Handler'          => DOKU_INC.'inc/parser/handler.php',
        'Doku_Renderer'          => DOKU_INC.'inc/parser/renderer.php',
        'Doku_Renderer_xhtml'    => DOKU_INC.'inc/parser/xhtml.php',
        'Doku_Renderer_code'     => DOKU_INC.'inc/parser/code.php',
        'Doku_Renderer_xhtmlsummary' => DOKU_INC.'inc/parser/xhtmlsummary.php',
        'Doku_Renderer_metadata' => DOKU_INC.'inc/parser/metadata.php',
    );

    if(isset($classes[$name])){
        require ($classes[$name]);
        return true;
    }

    // namespace to directory conversion
    $name = str_replace('\\', '/', $name);

    // test namespace
    if(substr($name, 0, 14) === 'dokuwiki/test/') {
        $file = DOKU_INC . '_test/' . substr($name, 14) . '.php';
        if(file_exists($file)) {
            require $file;
            return true;
        }
    }

    // plugin namespace
    if(substr($name, 0, 16) === 'dokuwiki/plugin/') {
        $name = str_replace('/test/', '/_test/', $name); // no underscore in test namespace
        $file = DOKU_PLUGIN . substr($name, 16) . '.php';
        if(file_exists($file)) {
            try {
                require $file;
            } catch (\Throwable $e) {
                \dokuwiki\ErrorHandler::showExceptionMsg($e, "Error loading plugin $name");
            }
            return true;
        }
    }

    // template namespace
    if(substr($name, 0, 18) === 'dokuwiki/template/') {
        $name = str_replace('/test/', '/_test/', $name); // no underscore in test namespace
        $file = DOKU_INC.'lib/tpl/' . substr($name, 18) . '.php';
        if(file_exists($file)) {
            try {
                require $file;
            } catch (\Throwable $e) {
                \dokuwiki\ErrorHandler::showExceptionMsg($e, "Error loading template $name");
            }
            return true;
        }
    }

    // our own namespace
    if(substr($name, 0, 9) === 'dokuwiki/') {
        $file = DOKU_INC . 'inc/' . substr($name, 9) . '.php';
        if(file_exists($file)) {
            require $file;
            return true;
        }
    }

    // Plugin loading
    if(preg_match(
        '/^(' . implode('|', PluginController::PLUGIN_TYPES) . ')_plugin_(' .
        DOKU_PLUGIN_NAME_REGEX .
        ')(?:_([^_]+))?$/',
        $name,
        $m
    )) {
        // try to load the wanted plugin file
        $c = ((count($m) === 4) ? "/{$m[3]}" : '');
        $plg = DOKU_PLUGIN . "{$m[2]}/{$m[1]}$c.php";
        if(file_exists($plg)){
            try {
                require $plg;
            } catch (\Throwable $e) {
                \dokuwiki\ErrorHandler::showExceptionMsg($e, "Error loading plugin {$m[2]}");
            }
        }
        return true;
    }
    return false;
}