hainan/app/Http/Controllers/Api/SharePayController.php

<?php

namespace App\Http\Controllers\Api;
use App\Common\OrderStatus as Status;
use App\Common\PayType;
use App\Http\Controllers\Controller;
use App\Models\AdminSetting;
use App\Models\Agent;
use App\Models\AgentProduct;
use App\Models\Order;
use App\Models\User;
use EasyWeChat\Factory;
use EasyWeChat\Kernel\Exceptions\InvalidArgumentException;
use EasyWeChat\Kernel\Exceptions\InvalidConfigException;
use GuzzleHttp\Exception\GuzzleException;
use Illuminate\Support\Facades\Cache;

/**
 * 跳转支付
 * Class SharePay
 * @package App\Http\Controllers\Api
 */
class SharePayController extends Controller
{
	public function pay()
	{
		$order_id = request()->input('id');
		if (!$order_id) {
			return $this->error('无效的ID');
		}

		$this->user_id = Cache::get(request()->header('Authentication'));
		if (!$this->user_id) {
			return $this->error('获取用户信息失败');
		}

		//用户openid
		$user_info = User::query()->where('id', $this->user_id)->first(['agent_id', 'openid']); //此处要用where，value()用find有BUG
		$openid = $user_info['openid'];
		$this->agent_id = $user_info['agent_id'];

		$order = Order::with(['agentProduct'])
			->whereRaw('`timeout` >= NOW()')
			->whereIn('status', [Status::UNPAID, Status::PAY_EARNEST])
			->find($order_id);
		if (!$order) {
			return $this->error('订单已支付或已超时，订单ID：' . $order_id);
		}

		$order->pay_user_id = $this->user_id;
		$order->save();

		//如果已经付定金或首付款，则仅支付尾款
		if ($order->status == Status::PAY_EARNEST) {
			$price = $order->price - $order->paid_money;
		} else {
			$price = $this->calc($order->price, $order->num, $order->pay_type, $order->agentProduct);
		}

		$setting = AdminSetting::val(['payee_appid', 'payee_mchid', 'payee_mchkey']);
		if (!isset($setting['payee_appid'], $setting['payee_mchid'], $setting['payee_mchkey'])) {
			return $this->error('获取系统配置失败');
		}

		$config = config('wechat.payment.default');
		$config = array_merge($config, [
			'app_id' => $setting['payee_appid'],
			'mch_id' => $setting['payee_mchid'],
			'key' => $setting['payee_mchkey'],
		]);

		$app = Factory::payment($config);
		try {
			$result = $app->order->unify([
				'body' => $order->title,
				'out_trade_no' => $order->order_no . '-' . $order->status, //后面加status，主要是为了方便微信支付回调时区分定金(首付款)和尾款支付
				'total_fee' => round($price * 100), //支付金额单位为分
				'notify_url' => route('wxpay_notify', ['agent_id' => $this->agent_id]), // 支付结果通知网址，如果不设置则会使用配置里的默认地址
				'trade_type' => 'JSAPI',
				'openid' => $openid,
				'attach' => $this->user_id, //保存支付用户的user_id
//				'profit_sharing' => 'Y', //Y分账，N不分账，默认不分账,Y大写
			]);
		} catch (InvalidArgumentException | InvalidConfigException | GuzzleException $e) {
			return ['error' => $e->getMessage(), 'line' => $e->getLine()];
		}

		if (empty($result['prepay_id'])) {
			return $result;
		}

		$jump_appid = Agent::where('id', $order->agent_id)->value('appid');

		$jssdk = $app->jssdk;
		$payConfig = $jssdk->bridgeConfig($result['prepay_id'], false) +
			['id' => $order->id, 'order_no' => $order->order_no, 'jump_appid' => $jump_appid]; // 返回数组
		return $this->success($payConfig);
	}

	/**
	 * 计算最终价格
	 * @param float $price 订单价格
	 * @param float $num 购买数量
	 * @param int $pay_type 支付方式
	 * @param AgentProduct $agent_product 代理商产品
	 * @return float
	 */
	private function calc(float $price, float $num, int $pay_type, AgentProduct $agent_product): float
	{
		/** 修改需要同步修改Order里面的 */
		//根据支付方式计算价格
		if (in_array($pay_type, [PayType::DEPOSIT_PAY, PayType::EARNEST_PAY, PayType::DOWN_PAYMENT])) {
			if ($pay_type == PayType::DEPOSIT_PAY && $agent_product->deposit && $agent_product->deposit_timeout) {
				return $agent_product->deposit;
			} else if ($pay_type == PayType::EARNEST_PAY && $agent_product->earnest && $agent_product->earnest_timeout) {
				return $agent_product->earnest;
			}
		}

		$total_price = $price * $num;

		return round($total_price, 2);
	}
}