pay_center_server/Modules/Api/Controllers/MerchantPayController.php

<?php

namespace Modules\Api\Controllers;

use App\Models\MerchantModel;
use App\Models\MerchantPaymentTypeModel;
use App\Models\PaymentTypeModel;
use Illuminate\Support\Facades\Validator;
use Modules\Api\Services\PaymentService;

class MerchantPayController extends BaseController
{
    public function getPayUrl()
    {
        $inputData = $this->getJsonData();
        $rules = [
            'merchant_code' => 'required|string',
            'payment_id' => 'required|integer',
            'amount' => 'required',
            'order_id' => 'required|string',
            'notify_url' => 'required|string',
            'redirect_url' => 'required|string',
            'product_name' => 'nullable|string',
            'signature' => 'required',
            'ip' => 'required'
        ];

        $validator = Validator::make($inputData, $rules);
        if ($validator->fails()) {
            // 如果有错误（可能是多个信息），这里只取第一个错误信息返回.
            logger($validator->errors()->first());
            return json_fail($validator->errors()->first());
        }

        $merchantInfo = MerchantModel::query()->where(['merchant_code' => $inputData['merchant_code'], 'status' => 1])->first();
        if (empty($merchantInfo)) {
            logger('该商户没有开通!');
            return json_fail('该商户没有开通!');
        }

        $paymentTypeInfo = PaymentTypeModel::query()->where(['id' => $inputData['payment_id'], 'status' => 1])->first(['uid', 'pay_type', 'payment_uid', 'payment_attr_uid']);
        if (empty($paymentTypeInfo)) {
            logger('该支付通道不存在!');
            return json_fail('该支付通道不存在!');
        }

        $mpt = MerchantPaymentTypeModel::query()->where(['merchant_uid' => $merchantInfo->uid, 'payment_type_uid' => $paymentTypeInfo->uid])->count('id');
        if ($mpt == 0) {
            logger('商户没有分配该通道!');
            return json_fail('商户没有分配该通道!');
        }

        // 验签
        $signData = [
            'merchant_code' => $inputData['merchant_code'],
            'order_id' => $inputData['order_id'],
            'product_name' => $inputData['product_name'],
            'amount' => $inputData['amount'],
            'notify_url' => $inputData['notify_url'],
            'redirect_url' => $inputData['redirect_url'],
            'payment_id' => $inputData['payment_id']
        ];
        $sign = build_sign($signData, $merchantInfo->key);

        if ($inputData['signature'] != $sign) {
            logger('签名失败!');
            return json_fail('签名失败!');
        }

        $order = make(PaymentService::class)->createdOrder($merchantInfo->uid, $paymentTypeInfo, $inputData, $merchantInfo->merchant_mark);
        if (!$order) {
            logger('订单创建失败!');
            return json_fail('订单创建失败!');
        }

        // 获取支付链接
        $payLink = make(PaymentService::class)->createPayLink($order);
        if (empty($payLink)) {
            logger('获取支付链接失败!', $order);
            return json_fail('获取支付链接失败');
        }

        return json_success(['pay_url' => $payLink]);
    }
}