<?php
namespace fastphp;

//框架根目录
//use function Composer\Autoload\includeFile;

define('CORE_PATH',__DIR__);

/**
 * fastphp框架核心
 */
class Fastphp
{
    //配置内容
    protected $config = [];

    public function __construct($config)
    {
        $this->config = $config;
        require CORE_PATH.'/func/common.php';
    }

    //运行程序
    public function run(){
        global $is_script;
        spl_autoload_register(array($this,'loadClass'));
        $this->origin();
        $this->setReporting();
        $this->unregisterGlobals();
        $this->setDbConfig();
        if(!$is_script){
            $this->route();
        }
    }

    //跨域请求处理
    public function origin(){
        $allow_origin = $this->config['origin'];//跨域访问的时候才会存在此字段
        $origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '';  
        if (in_array($origin, $allow_origin)) {
            header('Access-Control-Allow-Origin:' . $origin);
            header("Access-Control-Allow-Methods: *");
            header('Access-Control-Allow-Headers:*');
            header("Access-Control-Allow-Credentials: true");
        } else {
            return;
        }
    }

    //路由处理
    public function route(){
        $controllerName = $this->config['defaultController'];
        $actionName = $this->config['defaultAction'];
        $param = array();

        $url = $_SERVER['REQUEST_URI'];
        //清除？之后的内容
        $position = strpos($url,'?');
        $url = $position === false?$url:substr($url,0,$position);
        //删除前后的/
        $url = trim($url,'/');

        if($url){
            //使用 / 分割
            $urlArray = explode('/',$url);
            //删除空的数组元素
            $urlArray = array_filter($urlArray);
            //获取控制器名
            $controllerName = array_shift($urlArray).'\\controller\\'.ucfirst(array_shift($urlArray));

            //获取动作名
            $actionName = $urlArray?array_shift($urlArray):$actionName;

            //获取url参数
            $param = $urlArray?$urlArray:array();
        }

        //判断控制器和操作是否存在
        $controller = 'app\\'.$controllerName;
        if(!class_exists($controller)){
            exit($controller.'控制器不存在！');
        }
        if(!method_exists($controller,$actionName)){
            exit($actionName.'方法不存在！');
        }

        //实例化控制器，这个后续结合controller基类一起看
        $dispatch = new $controller($controllerName,$actionName);

        //以下等同于$dispatch->$actionName($param);
        call_user_func_array(array($dispatch,$actionName),$param);
    }

    //检测开发环境
    public function setReporting(){
        if(APP_DEBUG === true){
            error_reporting(E_ALL);
            ini_set('display_errors','On');
        } else {
            error_reporting(E_ALL);
            ini_set('display_errors','Off');
            ini_set('log_errors','On');
        }
    }

    //删除敏感字符
    public function stripSlashesDeep($value){
        $value = is_array($value)?array_map(array($this,'stripSlashesDeep'),$value):stripSlashes($value);
        return $value;
    }

    //检测自定义全局变量并移除
    public function unregisterGlobals(){
        if(ini_get('register_globals')){
            $array = array('_SESSION','_POST','_GET','_COOKIE','_REQUEST','_SERVER','_ENV','_FILES');
            foreach ($array as $value){
                foreach ($GLOBALS[$value] as $key=>$var){
                    if($var===$GLOBALS[$key]){
                        unset($GLOBALS[$key]);
                    }
                }
            }
        }
    }

    //配置数据库信息
    public function setDbConfig(){
        if(isset($this->config['db'])){
            define('DB_HOST',$this->config['db']['host']);
            define('DB_PORT',$this->config['db']['port']);
            define('DB_NAME',$this->config['db']['dbname']);
            define('DB_USER',$this->config['db']['username']);
            define('DB_PASS',$this->config['db']['password']);
        }
    }

    //自动加载类
    public function loadClass($className){
        $vendor = substr($className,0,strpos($className,'\\'));
        $vendorDIR = $this->config['namespace'][$vendor];
        $filePath = substr($className,strlen($vendor)).'.php';
        //包含应用文件
        $file = strtr($vendorDIR.$filePath,'\\',DIRECTORY_SEPARATOR);
        if(!is_file($file)){
            return;
        }

        include $file;
    }

}