<?php
declare (strict_types = 1);

namespace app;

use think\App;
use think\exception\ValidateException;
use think\Validate;
use think\facade\View;
use think\facade\Config;
use think\facade\Request;

/**
 * 控制器基础类
 */
abstract class BaseController
{
    /**
     * Request实例
     * @var \think\Request
     */
    protected $request;

    /**
     * 应用实例
     * @var \think\App
     */
    protected $app;

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

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

    /* @var array $admin 商家登录信息 */
    protected $admin;

    /* @var string $route 当前控制器名称 */
    protected $controller = '';

    /* @var string $route 当前方法名称 */
    protected $action = '';

    /* @var string $route 当前路由uri */
    protected $routeUri = '';

    /* @var string $route 当前路由：分组名称 */
    protected $group = '';

    /* @var array $allowAllAction 登录验证白名单 */
    protected $allowAllAction = [
        // 登录页面
        'passport/login',
    ];

    /* @var array $notLayoutAction 无需全局layout */
    protected $notLayoutAction = [
        // 登录页面
        'passport/login',
    ];

    /**
     * 构造方法
     * @access public
     * @param  App  $app  应用对象
     */
    public function __construct(App $app)
    {
        $this->app     = $app;
        $this->request = $this->app->request;

        // 控制器初始化
        $this->initialize();
        // 全局layout
        $this->layout();
    }

    /**
     * 全局layout模板输出
     * @throws \Exception
     */
    private function layout()
    {
        // 验证当前请求是否在白名单
        if (!in_array($this->routeUri, $this->notLayoutAction)) {
            // 输出到view
           View::assign([
                'base_url' => base_url(),                      // 当前域名
                'admin_url' => url('/admin'),              // 后台模块url
                'group' => $this->group,
                'menus' => $this->menus(),                     // 后台菜单
                'admin' => $this->admin,                       // 商家登录信息
                'request' => Request::instance()               // Request对象
            ]);
        }
    }

    // 初始化
    protected function initialize()
    {}

    /**
     * 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
     * @return array|string|true
     * @throws ValidateException
     */
    protected function validate(array $data, $validate, array $message = [], bool $batch = false)
    {
        if (is_array($validate)) {
            $v = new Validate();
            $v->rule($validate);
        } else {
            if (strpos($validate, '.')) {
                // 支持场景
                [$validate, $scene] = explode('.', $validate);
            }
            $class = false !== strpos($validate, '\\') ? $validate : $this->app->parseClass('validate', $validate);
            $v     = new $class();
            if (!empty($scene)) {
                $v->scene($scene);
            }
        }

        $v->message($message);

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

        return $v->failException(true)->check($data);
    }

    /**
     * 解析当前路由参数 （分组名称、控制器名称、方法名）
     */
    protected function getRouteinfo()
    {
        // 控制器名称
        $this->controller = toUnderScore($this->request->controller());
        // 方法名称
        $this->action = $this->request->action();
        // 控制器分组 (用于定义所属模块)
        $groupstr = strstr($this->controller, '.', true);
        $this->group = $groupstr !== false ? $groupstr : $this->controller;
        // 当前uri
        $this->routeUri = $this->controller . '/' . $this->action;
    }

    /**
     * 后台菜单配置
     * @return array
     */
    private function menus()
    {
        foreach ($data = Config::get('menus') as $group => $first) {
            $data[$group]['active'] = $group === $this->group;
            // 遍历：二级菜单
            if (isset($first['submenu'])) {
                foreach ($first['submenu'] as $secondKey => $second) {
                    // 二级菜单所有uri
                    $secondUris = isset($second['uris']) ? $second['uris'] : [$second['index']];
                    // 二级菜单：active
                    !isset($data[$group]['submenu'][$secondKey]['active'])
                    && $data[$group]['submenu'][$secondKey]['active'] = in_array($this->routeUri, $secondUris);
                }
            }
        }
        return $data;
    }

    /**
     * 验证登录状态
     * @return bool
     */
    private function checkLogin()
    {
        // 验证当前请求是否在白名单
        if (in_array($this->routeUri, $this->allowAllAction)) {
            return true;
        }
        // 验证登录状态
        if (empty($this->admin)
            || (int)$this->admin['is_login'] !== 1
        ) {
            $this->redirect('passport/login');
            return false;
        }
        return true;
    }

}