<?php
namespace App\Http\Controllers;

use App\System;
use Illuminate\Http\Request;

class OutController extends Controller{

    public function getConfig(Request $request){
        $msg = '';
        try {
            $ts = $request->get('ts');
            $sign = $this->getSign('get_config',$ts );
            if ($sign != $request->get('sign')) {
                $this->returnJson([], 400, "签名不对");
                exit;
            }
            $data = System::find(1);
            $arr = [
                'app_address' => $this->decry_data($data->app_address) ?: "",
                'app_key' => $this->decry_data($data->app_key) ?: "",
                'gui_address' => $this->decry_data($data->gui_address) ?: "",
            ];
            $this->returnJson($arr);
            exit;
        } catch (\Exception $e) {
            $msg = $e->getMessage();
        }
        $this->returnJson([], 400, $msg);
        exit;
    }

    public function updateConfig(Request $request){
        try {

            $ts = $request->get('ts');

            $app_address = $request->post('app_address');
            $app_key = $request->post('app_key');
            $gui_address = $request->post('gui_address');

            $arr = [
                'app_address' => $app_address,
                'app_key' => $app_key,
                'gui_address' => $gui_address,
            ];

            $sign = $this->getSign('edit_config', $ts, $arr);
            if ($sign != $request->get('sign')) {
                $this->returnJson([], 400, "签名不对");
                exit;
            }

            System::where(['id'=>1])->update(
                [
                    'app_address' => $this->encry_data($app_address),
                    'app_key' => $this->encry_data($app_key),
                    'gui_address' => $this->encry_data($gui_address),
                ]
            );


            $this->returnJson($arr);
            exit;
        } catch (\Exception $e) {
            $msg = $e->getMessage();
        }
        $this->returnJson([], 400, $msg);
    }

    private function getSign($api,$ts,$arr=[]): string
    {
        $sinArr = [
            'secret' => config('secret.sign_key'),
            'ts' => $ts,
            'api' => $api,
        ];
        $sinArr = array_merge($sinArr, $arr);
        $str = implode("|", $sinArr);
        return md5($str);
    }

    private function returnJson($data,$code=200,$msg=""){
        $data = [
            'code' => $code,
            'msg' => $msg,
            'data' => (object)$data,
        ];
        echo json_encode($data, 256);
        exit;
    }


    private function encry_data($data){
        $key = config('secret.encry_key');
        return openssl_encrypt($data, 'AES-256-ECB', $key);
    }

    private function decry_data($endata){
        $key = config('secret.encry_key');
        return openssl_decrypt($endata, 'AES-256-ECB', $key);
    }
}