<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace app;

// header('Access-Control-Allow-Origin:*');
// header('Access-Control-Allow-Headers:x-requested-with,content-type,Authorization,token');
// header('Access-Control-Allow-Methods:GET,POST,OPTIONS,DELETE,PUT');
// header('Access-Control-Allow-Credentials:true');

use think\App;
use think\Container;
use think\exception\ValidateException;
use think\Response;
use traits\controller\Jump;

class BaseController
{

    use Jump;

    /**
     * 视图类实例
     * @var \think\View
     */
    protected $view;

    /**
     * Request实例
     * @var \think\Request
     */
    protected $request;

    /**
     * 验证失败是否抛出异常
     * @var bool
     */
    protected $failException = false;

    /**
     * 是否批量验证
     * @var bool
     */
    protected $batchValidate = false;

    /**
     * 前置操作方法列表（即将废弃）
     * @var array $beforeActionList
     */
    protected $beforeActionList = [];

    /**
     * 控制器中间件
     * @var array
     */
    protected $middleware = [];

    /**
     * 无需签名
     * @var array
     */
    protected $noSize = [];

    /**
     * 用户信息
     * @var array
     */
    protected $userInfo = [];

    /**
     * 无需登录的方法,同时也就不需要鉴权了
     * @var array
     */
    protected $noNeedLogin = [];

    /**
     * 无需安全验证
     * @var array
     */
    protected $noSecure = [];

    protected $param = [];

    /**
     * 构造方法
     * @access public
     */
    public function __construct(App $app = null)
    {
        $this->app = $app ?: Container::get('app');
        $this->request = $this->app['request'];
        $this->view = $this->app['view'];

        $this->initialize();

        $this->registerMiddleware();

//      前置操作方法 即将废弃
        foreach ((array)$this->beforeActionList as $method => $options) {
            is_numeric($method) ?
                $this->beforeAction($options) :
                $this->beforeAction($method, $options);
        }
    }

    //是否需要登录
    protected static function checklogin($arr)
    {
        if (isset($_SERVER['REQUEST_URI'])) {
            $action = $_SERVER['REQUEST_URI'];
        } else {
            return false;
        }
        $action = substr($action, strrpos($action, '/') + 1);
        if (strrpos($action, '?') !== false) {
            $action = substr($action, 0, strrpos($action, '?'));
        }
        $arr = is_array($arr) ? $arr : explode(',', $arr);
        if (!$arr) {
            return false;
        }
        $arr = array_map('strtolower', $arr);
        // 是否存在
        if (in_array(strtolower($action), $arr) || in_array('*', $arr)) {
            return true;
        }
        // 没找到匹配
        return false;
    }

    private function getParam($method)
    {
        $arr = [];
        switch ($method) {
            case 'post':
                $arr = $_POST;
                break;
            case 'get':
                $arr = $_GET;
                break;
            case 'delete':
                parse_str(file_get_contents('php://input'), $arr);
                break;
            case 'put':
                parse_str(file_get_contents('php://input'), $arr);
                break;
            case 'patch':
                parse_str(file_get_contents('php://input'), $arr);
                break;
        }
        return $arr;
    }

    // 初始化
    protected function initialize()
    {
        $function = request()->action(true);
        $module = request()->module();
        $controller = request()->controller();
        $classname = "\app\\$module\\validate\\$controller";
        if (!self::checklogin($this->noNeedLogin)) {//true为不用验证
            $controller_classname = "\app\\$module\\model\\$controller";
            $directory = new $controller_classname();
            if (method_exists($directory, $function)) {
                $token = $this->request->header();//获取请求头token
                if (!isset($token['token'])) {
                    tojson(10001);
                } else {
                    $this->userInfo = getToken($token['token']);
                }
            }
        }
        $method = $this->request->method();
        $method = strtolower($method);
        $param = $this->getParam($method);
        if (class_exists($classname)) {
            $validate = new $classname;
            if ($validate->hasScene($function)) {//验证场景
                if (!$validate->scene($function)->check($param)) {//验证器
                    tojson('10000', $validate->getError());
                }
            }
        }

        //安全验证
        nosecure($method, $this->noSecure, $function);

        //验签
        verifysign($param, $this->noSize);//加上验签

        if (isset($param['page']) && !empty($param['page'])) {
            $param['page'] = $param['page'] - 1;
            if (!isset($param['pageSize'])) {
                $page = 0;
                $pageSize = 0;
            } else {
                $page = $param['pageSize'] * $param['page'];
                $pageSize = $param['pageSize'];
            }
        } else {
            $page = 0;
            $pageSize = 0;
        }
        $this->request->page = $page;
        $this->request->pageSize = $pageSize;
        $this->param = $param;
    }

    // 注册控制器中间件
    public function registerMiddleware()
    {
        foreach ($this->middleware as $key => $val) {
            if (!is_int($key)) {
                $only = $except = null;

                if (isset($val['only'])) {
                    $only = array_map(function ($item) {
                        return strtolower($item);
                    }, $val['only']);
                } elseif (isset($val['except'])) {
                    $except = array_map(function ($item) {
                        return strtolower($item);
                    }, $val['except']);
                }

                if (isset($only) && !in_array($this->request->action(), $only)) {
                    continue;
                } elseif (isset($except) && in_array($this->request->action(), $except)) {
                    continue;
                } else {
                    $val = $key;
                }
            }

            $this->app['middleware']->controller($val);
        }
    }

    /**
     * 前置操作
     * @access protected
     * @param string $method 前置操作方法名
     * @param array $options 调用参数 ['only'=>[...]] 或者['except'=>[...]]
     */
    protected function beforeAction($method, $options = [])
    {
        if (isset($options['only'])) {
            if (is_string($options['only'])) {
                $options['only'] = explode(',', $options['only']);
            }

            $only = array_map(function ($val) {
                return strtolower($val);
            }, $options['only']);

            if (!in_array($this->request->action(), $only)) {
                return;
            }
        } elseif (isset($options['except'])) {
            if (is_string($options['except'])) {
                $options['except'] = explode(',', $options['except']);
            }

            $except = array_map(function ($val) {
                return strtolower($val);
            }, $options['except']);

            if (in_array($this->request->action(), $except)) {
                return;
            }
        }

        call_user_func([$this, $method]);
    }

    /**
     * 加载模板输出
     * @access protected
     * @param string $template 模板文件名
     * @param array $vars 模板输出变量
     * @param array $config 模板参数
     * @return mixed
     */
    protected function fetch($template = '', $vars = [], $config = [])
    {
        return Response::create($template, 'view')->assign($vars)->config($config);
    }

    /**
     * 渲染内容输出
     * @access protected
     * @param string $content 模板内容
     * @param array $vars 模板输出变量
     * @param array $config 模板参数
     * @return mixed
     */
    protected function display($content = '', $vars = [], $config = [])
    {
        return Response::create($content, 'view')->assign($vars)->config($config)->isContent(true);
    }

    /**
     * 模板变量赋值
     * @access protected
     * @param mixed $name 要显示的模板变量
     * @param mixed $value 变量的值
     * @return $this
     */
    protected function assign($name, $value = '')
    {
        $this->view->assign($name, $value);

        return $this;
    }

    /**
     * 视图过滤
     * @access protected
     * @param Callable $filter 过滤方法或闭包
     * @return $this
     */
    protected function filter($filter)
    {
        $this->view->filter($filter);

        return $this;
    }

    /**
     * 初始化模板引擎
     * @access protected
     * @param array|string $engine 引擎参数
     * @return $this
     */
    protected function engine($engine)
    {
        $this->view->engine($engine);

        return $this;
    }

    /**
     * 设置验证失败后是否抛出异常
     * @access protected
     * @param bool $fail 是否抛出异常
     * @return $this
     */
    protected function validateFailException($fail = true)
    {
        $this->failException = $fail;

        return $this;
    }

    /**
     * 验证数据
     * @access protected
     * @param array $data 数据
     * @param string|array $validate 验证器名或者验证规则数组
     * @param array $message 提示信息
     * @param bool $batch 是否批量验证
     * @param mixed $callback 回调方法（闭包）
     * @return array|string|true
     * @throws ValidateException
     */
    protected function validate($data, $validate, $message = [], $batch = false, $callback = null)
    {
        if (is_array($validate)) {
            $v = $this->app->validate();
            $v->rule($validate);
        } else {
            if (strpos($validate, '.')) {
                // 支持场景
                list($validate, $scene) = explode('.', $validate);
            }
            $v = $this->app->validate($validate);
            if (!empty($scene)) {
                $v->scene($scene);
            }
        }

        // 是否批量验证
        if ($batch || $this->batchValidate) {
            $v->batch(true);
        }

        if (is_array($message)) {
            $v->message($message);
        }

        if ($callback && is_callable($callback)) {
            call_user_func_array($callback, [$v, &$data]);
        }

        if (!$v->check($data)) {
            if ($this->failException) {
                throw new ValidateException($v->getError());
            }
            return $v->getError();
        }

        return true;
    }

    public function __debugInfo()
    {
        $data = get_object_vars($this);
        unset($data['app'], $data['request']);

        return $data;
    }

}