<?php
declare (strict_types = 1);

namespace app\index\controller;

use app\common\model\Adv;
use app\common\model\City;
use app\common\model\Config;
use liliuwei\think\Jump;
use think\App;
use think\facade\View;

/**
 * 控制器基础类
 */
abstract class Controller
{
    use Jump;
    /**
     * Request实例
     * @var \think\Request
     */
    protected $request;
    /**
     * 应用实例
     * @var \think\App
     */
    protected $app;

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

    //当前页数
    protected $page;
    //分页取记录数量
    protected $limit;

    //城市ID
    protected $is_mobile;

    /**
     * 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;
        //过滤请求
        $this->request->filter(['htmlspecialchars','trim']);

        $this->page = $this->request->param('page/d', 1);

        $this->limit = $this->request->param('limit/d', 10);

        $this->is_mobile = $this->request->isMobile();

        $this->init();

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

    // 初始化
    protected function initialize()
    {}

    protected function init()
    {

    }



    /**
     * 获取上下一条记录
     * @param $model    模型
     * @param $where    条件
     * @param $value    主键比较值
     * @param string $type  类型(prev,next)
     * @return mixed
     */
    public static function getRecord($model, $where = [], $value, $type = "prev")
    {

        $pk = $model->getPK();
        $filter = [];
        if($type == "prev") {
            $filter[] = [$pk, '<', $value];
            $order = [$pk=>'desc'];
        }elseif ($type == "next") {
            $filter[] = [$pk, '>', $value];
            $order = [$pk=>'asc'];
        }
        $result = $model->when($where, function ($query) use($where) {
            $query->where($where);
        })->where($filter)->order($order)->find();

        return $result;
    }

}