AliPay.php

<?php
/**
 * Copyright 2022-2023 FOSSBilling
 * Copyright 2011-2021 BoxBilling, Inc.
 * SPDX-License-Identifier: Apache-2.0
 *
 * @copyright FOSSBilling (https://www.fossbilling.org)
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache-2.0
 */

class Payment_Adapter_AliPay extends Payment_AdapterAbstract
{
    public function init()
    {
        if(!$this->getParam('partner')) {
            throw new Payment_Exception('The ":pay_gateway" payment gateway is not fully configured. Please configure the :missing', [':pay_gateway' => 'AliPay', ':missing' => 'Partner ID']);
        }

        if (!$this->getParam('security_code')) {
            throw new Payment_Exception('The ":pay_gateway" payment gateway is not fully configured. Please configure the :missing', [':pay_gateway' => 'AliPay', ':missing' => 'Security Code']);
        }

        if (!$this->getParam('seller_email')) {
            throw new Payment_Exception('The ":pay_gateway" payment gateway is not fully configured. Please configure the :missing', [':pay_gateway' => 'AliPay', ':missing' => 'Seller Email']);
        }

        $this->_config['charset']       = 'utf-8';
    }

    public static function getConfig()
    {
        return array(
            'supports_one_time_payments'    =>  true,
            'supports_subscriptions'        =>  false,
            'description'                   =>  'Clients will be redirected to Alipay to make payment.',
            'logo' => array(
                'logo' => 'alipay.png',
                'height' => '25px',
                'width' => '85px',
            ),
            'form'  => array(
                'partner' => array('text', array(
                            'label' => 'AliPay Partner ID. After signing contract online successfully, Alipay provides the partner id',
                    ),
                 ),
                 'security_code' => array('text', array(
                 			'label' => 'AliPay security code. After signing contract online successfully, Alipay provides the 32bits security code',
                 	),
                 ),
                'seller_email' => array('text', array(
                            'label' => 'AliPay seller email. Your Alipay account',
                    ),
                 ),
                'type' => array('select', array(
                            'multiOptions' => array(
                                '1' => 'Type 1 - receive money at once. You need to be registered company in china',
                                '2' => 'Type 2 - receive money after buyer confirm it'
                            ),
                            'label' => 'Contract type. Type 1: is mainly for virtual goods. So seller can receive money at once, but it requires seller is an register company; Type 2 is mainly for real goods, when buyer receive goods, then buyer check the goods is right and confirm to pay! During the process, the money is held by Alipay, if buyer dont claim to get money back, whether confirm or not, the money will transfer to seller after certain days.',
                    ),
                 ),
            ),
        );
    }

    /**
     * Return payment gateway type
     * @return string
     */
    public function getType()
    {
        return Payment_AdapterAbstract::TYPE_FORM;
    }

    /**
     * Return payment gateway type
     * @return string
     */
    public function getServiceUrl()
    {
        if($this->testMode) {
            return 'https://www.alipay.com/cooperate/gateway.do';
        }
		return 'https://www.alipay.com/cooperate/gateway.do';
    }

    public function getInvoiceId($data)
    {
        $id = parent::getInvoiceId($data);
        if(is_null($id)) {
            $id = isset($data['post']['out_trade_no']) ? (int)$data['post']['out_trade_no'] : NULL;
        }
        return $id;
    }

	public function singlePayment(Payment_Invoice $invoice)
	{
		$client = $invoice->getBuyer();

        $contract = $this->getParam('type');
        switch ($contract){
            case '0':
                $service = 'trade_create_by_buyer';
                break;
            case '1':
                $service = 'create_direct_pay_by_user';
                break;
            case '2':
                $service = 'create_partner_trade_by_buyer';
                break;
        }

        if(!isset($service)){
            throw new Payment_Exception("Error getting service for contract");
        }

        $parameter = array(
            'service'           => $service,
            'partner'           => $this->getParam('partner'),
            '_input_charset'    => $this->getParam('charset'),
            'notify_url'        => $this->getParam('notify_url'),
            'return_url'        => $this->getParam('thankyou_url'),

            'subject'           => $invoice->getTitle(),
            'out_trade_no'      => $invoice->getId(),
            'price'             => $invoice->getTotalWithTax(),
            'quantity'          => 1,
            'payment_type'      => 1,

            'logistics_type'    => 'EXPRESS',
            'logistics_fee'     => 0,
            'logistics_payment' => 'BUYER_PAY_AFTER_RECEIVE',

            'seller_email'      => $this->getParam('seller_email'),
        );

        ksort($parameter);
        reset($parameter);
        $data = $parameter;
        $data['sign'] = $this->_generateSignature($parameter);
        $data['sign_type'] = 'MD5';

        return $data;
	}

	public function recurrentPayment(Payment_Invoice $invoice)
	{
        throw new Payment_Exception(':type: does not support :action:', [':type:' => 'AliPay', ':action:' => __trans('reccurent payments')]);
	}

	public function getTransaction($data, Payment_Invoice $invoice)
	{
		$ipn = $data['post'];

        $uniqid = md5($ipn['trade_no'].$ipn['trade_status']);

		$tx = new Payment_Transaction();
		$tx->setId($uniqid);
		$tx->setAmount($ipn['total_fee']);
		$tx->setCurrency($invoice->getCurrency());

        $contract = $this->getParam('type');
        if($contract == '1') {
            switch ($ipn['trade_status']) {
                case 'TRADE_SUCCESS':
                case 'TRADE_FINISHED':
                    $tx->setType(Payment_Transaction::TXTYPE_PAYMENT);
                    $tx->setStatus(Payment_Transaction::STATUS_COMPLETE);
                    break;

                default:
                    $tx->setStatus($ipn['trade_status']);
                    break;
            }
        }

        if($contract == '2') {
            switch ($ipn['trade_status']) {
                case 'WAIT_SELLER_SEND_GOODS':
                    $tx->setType(Payment_Transaction::TXTYPE_PAYMENT);
                    $tx->setStatus(Payment_Transaction::STATUS_COMPLETE);
                    break;

                default:
                    $tx->setStatus($ipn['trade_status']);
                    break;
            }
        }

		return $tx;
	}

    public function isIpnValid($data, Payment_Invoice $invoice)
    {
        $ipn = $data['post'];

        ksort($ipn);
        reset($ipn);

        $sign = '';
        foreach ($ipn AS $key=>$val)
        {
            if ($key != 'sign' && $key != 'sign_type' && $key != 'code' && $key !='bb_gateway_id' && $key != 'bb_invoice_id')
            {
                $sign .= "$key=$val&";
            }
        }

        $sign = substr($sign, 0, -1) . $this->getParam('security_code');
        return (md5($sign) == $ipn['sign']);
    }

    private function _generateSignature(array $parameter)
    {
        $sign  = '';
        foreach ($parameter AS $key => $val)
        {
            $sign  .= "$key=$val&";
        }
        $sign  = substr($sign, 0, -1) . $this->getParam('security_code');
        return md5($sign);
    }
}