<?php
declare(strict_types=1);

namespace App\Request;

use App\Exception\BusinessException;
use App\Helper\Signer;
use App\Model\App;

class ApiRequest extends Request
{
    protected App $app;

    public function __construct(array $params = [])
    {
        $this->checkApp($params['app_id'] ?? null);
        $this->checkSign($params);

        $data = json_decode($params['data'], true);
        foreach ($this->defaults() as $key => $value) {
            if (isset($data[$key])) {
                if (empty($value) && empty($data[$key])) {
                    $data[$key] = $value;
                }
            } else {
                $data[$key] = $value;
            }
        }
        $this->_data = $data;
    }

    protected function checkSign($params) {
        if (!Signer::verify($params, $this->app->app_key)) {
            throw new BusinessException('验签错误');
        }

        if ($params['timestamp'] < time() - 6000) {
            throw new BusinessException('请求已过期');
        }
    }

    protected function checkApp($appId) {
        if (is_null($appId)) {
            throw new BusinessException('[app_id]错误');
        }
        $app = App::query()->where('app_id', $appId)->first();
        if (is_null($app)) {
            throw new BusinessException('APP错误');
        }
        $this->app = $app;
    }

    public function getApp() {
        return $this->app;
    }
}