<?php

namespace App\Controller;

use App\Constants\ErrorCode;
use App\Model\Order;
use App\Model\OrderGoods;
use App\Model\OrderMain;
use App\Request\WxminiPayRequest;

use App\Service\PurchaseLimitServiceInterface;
use EasyWeChat\Factory;
use Hyperf\DbConnection\Db;
use Hyperf\Guzzle\CoroutineHandler;

class PaymentController extends BaseController
{
    /**
     * @Inject
     * @var PurchaseLimitServiceInterface
     */
    protected $purchaseLimitService;

    public function wxminiPayOnline(WxminiPayRequest $request){

        $data = $request->validated();

        $config = config('wxpay');
        $app = Factory::payment($config);
        $app['guzzle_handler'] = CoroutineHandler::class;

        // 待支付的，未超时（15min，900sec）的订单
        $orderMain = OrderMain::query()
            ->where(['state' => OrderMain::ORDER_STATE_UNPAY, 'id' => $data['order_id']])
            ->where('time', '>=', date('Y-m-d H:i:s', (time()-900)))
            ->first();

        if (empty($orderMain)) {
            return $this->result(ErrorCode::PAY_FAILURE, $data,'订单不存在或已失效');
        }

        //查询订单商品信息
        $order = Order::query()
            ->where('order_main_id',$data['order_id'])
            ->select('id')
            ->get()
            ->toArray();
        $orderGoods = OrderGoods::query()
            ->whereIn('order_id',$order)
            ->get();
        //判断是否有购买多个特价商品
        $result = $this->purchaseLimitService->PurchaseLimit($orderGoods);
        if(!$result){
            Db::rollBack();
            return '同一个订单不能购买多个特价商品';
        }

        $result = $app->order->unify([
            'body' => '懒族生活 - 外卖下单',
            'out_trade_no' => $orderMain->global_order_id,
            // 'total_fee' => bcmul(floatval($orderMain->money), 100, 0),
            'total_fee' => 1,
            'notify_url' => config('site_host') . '/wechat/notify/wxminionline',
            'trade_type' => 'JSAPI',
            'openid' => $data['openid'],
        ]);

        // 返回支付参数给前端
        $parameters = [
            'appId' => $result['appid'],
            'timeStamp' => '' . time() . '',
            'nonceStr' => uniqid(),
            'package' => 'prepay_id=' . $result['prepay_id'],
            'signType' => 'MD5'
        ];

        $parameters['paySign'] = $this->signture($parameters, $config['key']);

        return $this->success($parameters);
    }

    public function wxminiPayOffline(WxminiPayRequest $request){

        $data = $request->validated();

        $config = config('wxpay');
        $app = Factory::payment($config);
        $app['guzzle_handler'] = CoroutineHandler::class;

        // 待支付的，未超时（15min，900sec）的订单
        $orderMain = OrderMain::query()
            ->where(['dm_state' => OrderMain::ORDER_STATE_UNPAY, 'id' => $data['order_id']])
            ->first();

        if (empty($orderMain)) {
            return $this->result(ErrorCode::PAY_FAILURE, $data,'订单不存在或已失效');
        }

        $result = $app->order->unify([
            'body' => '懒族生活 - 当面支付',
            'out_trade_no' => $orderMain->global_order_id,
            'total_fee' => bcmul(floatval($orderMain->money), 100, 0),
            'notify_url' => config('site_host') . '/wechat/notify/wxminioffline',
            'trade_type' => 'JSAPI',
            'openid' => $data['openid'],
        ]);

        // 返回支付参数给前端
        $parameters = [
            'appId' => $result['appid'],
            'timeStamp' => '' . time() . '',
            'nonceStr' => uniqid(),
            'package' => 'prepay_id=' . $result['prepay_id'],
            'signType' => 'MD5'
        ];

        $parameters['paySign'] = $this->signture($parameters, $config['key']);

        return $this->success($parameters);
    }

    /**
     * 支付参数加签
     * @param $parameters
     * @param $key
     * @return string
     */
    private function signture($parameters, $key)
    {
        // 按字典序排序参数
        ksort($parameters);

        // http_query
        $queryParams = $this->http_query($parameters);

        // 加入KEY
        $queryParams = $queryParams . "&key=" . $key;

        // MD5加密
        $queryParams = md5($queryParams);

        // 字符转为大写
        return strtoupper($queryParams);
    }

    /**
     * 参数转为http query字串
     * @param $parameters
     * @return string
     */
    private function http_query($parameters) {

        $http_query = [];
        foreach ($parameters as $key => $value) {
            $http_query[] = $key.'='.$value;
        }

        return implode('&', $http_query);
    }

}