// 在安装、卸载插件的时候，需要先初始化
function plugin_init() {
    global $plugin_srcfiles, $plugin_paths, $plugins, $official_plugins;
    $plugin_paths = glob(APP_PATH.'plugin/*', GLOB_ONLYDIR);
    if(is_array($plugin_paths)) {
        foreach($plugin_paths as $path) {
            $dir = file_name($path);
            $conffile = $path."/conf.json";
            if(!is_file($conffile)) continue;
            $arr = xn_json_decode(file_get_contents($conffile));
            if(empty($arr)) continue;
            $plugins[$dir] = $arr;
            
            // 额外的信息
            $plugins[$dir]['hooks'] = array();
            $hookpaths = glob(APP_PATH."plugin/$dir/hook/*.*"); // path
            if(is_array($hookpaths)) {
                foreach($hookpaths as $hookpath) {
                    $hookname = file_name($hookpath);
                    $plugins[$dir]['hooks'][$hookname] = $hookpath;
                }
            }
            
            // 本地 + 线上数据
            $plugins[$dir] = plugin_read_by_dir($dir);
        }