<?php
namespace WPCOM\Member\Payments;
use WPCOM\Member\Order;
use WPCOM\Themer\Session;

defined('ABSPATH') || exit;

class Wxpay extends Payment {
    private $_config = [];
    protected $is_rest = false;
    public function __construct() {
        $this->id = 'wxpay';
        $this->title = '微信支付';
        $this->icon = WPCOM_MP_URI . 'payment/wxpay/wxpay.svg';
        $this->color = '#2bae67';
        $this->modal = !$this->is_mobile(); // 非手机端的时候使用弹框，二维码支付

        $type = isset($_SERVER['AppType']) ? $_SERVER['AppType'] : (isset($_SERVER['HTTP_APPTYPE']) ? $_SERVER['HTTP_APPTYPE'] : '');
        if($type === 'weapp' && function_exists('WWA_is_rest') && WWA_is_rest()){
            $this->is_rest = true;
        }

        add_action('wp_ajax_WPCOM_WXPay_order_status', [$this, 'order_status']);
        add_action('wp_ajax_nopriv_WPCOM_WXPay_order_status', [$this, 'order_status']);

        parent::__construct();
    }

    public function init($index){
        $appid = wpcom_mp_options('wxpay_appid');
        $secret = wpcom_mp_options('wxpay_secret');
        $mchid = wpcom_mp_options('wxpay_mchid');
        $key = wpcom_mp_options('wxpay_key');
        $disable_h5 = wpcom_mp_options('wxpay_disable_h5');
        $this->_config = [
            'appid' => $appid && isset($appid[$index]) ? trim($appid[$index]) : '',
            'mchid' => $mchid && isset($mchid[$index]) ? trim($mchid[$index]) : '',
            'key' => $key && isset($key[$index]) ? trim($key[$index]) : '',
            'secret' => $secret && isset($secret[$index]) ? trim($secret[$index]) : '',
            'disable_h5' => $disable_h5 && isset($disable_h5[$index]) ? $disable_h5[$index] : '',
        ];
        if ($this->is_mobile() && !$this->is_weixin() && $this->_config['disable_h5']) {
            // 手机端非微信并且没有开启h5支付时使用二维码扫码支付，改为弹框
            $this->modal = true;
        }
        if(function_exists('WWA_options') && $this->is_rest){
            $options = WWA_options();
            $this->_config['appid'] = isset($options['appid']) ? trim($options['appid']) : '';
        }
    }

    public function process_payment($order_id) {
        $url = Order::get_checkout_payment_url($order_id);
        return [
            'result' => 'success',
            'redirect' =>  $url,
            'height' => '472px',
            'modal-size' => 'modal-sm'
        ];
    }

    public function order_status() {
        $order_id = isset($_POST['order_id']) && $_POST['order_id'] ? $_POST['order_id'] : '';
        $nonce = isset($_POST['nonce']) && $_POST['nonce'] ? $_POST['nonce'] : '';

        if($nonce && wp_verify_nonce($nonce, 'wpcom_wxpay_receipt_page')){
            $order = $order_id ? Order::get_order($order_id) : '';
            $user_id = get_current_user_id();
            if ($order && isset($order->ID) && (!$order->user || ((int) $order->user === $user_id)) && $order->status === 'paid') {
                $res = [
                    'redirect' => Order::get_checkout_return_url($order->ID, $this->id),
                    'status' => 'paid'
                ];
                wp_send_json($res);
            }
        }
    }

    public function receipt_page($order_id) {
        $order = Order::get_order($order_id);
        if (!$order || $order->status === 'paid') return;
        require_once WPCOM_MP_DIR . "payment/wxpay/WxPay.Config.php";
        $config = new WeChat_Config($this->_config);
        if($this->is_rest){
            include_once WPCOM_MP_DIR . 'payment/wxpay/WxPay.JsApiPay.php';
            $tools = new \JsApiPay($config);
            $login = new \WWA_REST_Login_Controller();
            $str = $login->weapp(['code' => $_POST['code']]);
            $openId = isset($str['openid']) && $str['openid'] ? $str['openid'] : '';
            $trade_type = 'JSAPI';
        }else{
            // 手机端、不是微信内打开、未关闭h5支付
            if ($this->is_mobile() && !$this->is_weixin() && !$this->_config['disable_h5']) {
                require_once WPCOM_MP_DIR . "payment/wxpay/WxPay.Api.php";
                $trade_type = 'MWEB';
            } else if ($this->is_weixin() && $this->is_mobile() && $this->_config['secret']) { // 使用手机微信内置公众号支付
                include_once WPCOM_MP_DIR . 'payment/wxpay/WxPay.JsApiPay.php';
                $tools = new \JsApiPay($config);
                $openId = $tools->GetOpenid();
                $trade_type = 'JSAPI';
            } else {
                require_once WPCOM_MP_DIR . "payment/wxpay/WxPay.Api.php";
                $trade_type = 'NATIVE';
            }
        }

        self::add_log('#' . $order_id . '发起微信支付：' . $trade_type, $this->id);

        $input = new \WxPayUnifiedOrder();
        $input->SetBody($this->get_order_title($order));
        $input->SetOut_trade_no($order->number);
        $total = $order->price;
        $totalFee = (int) ($total * 100);

        $input->SetTotal_fee($totalFee);
        $input->SetFee_type('CNY');

        $startTime = date("YmdHis", current_time('timestamp'));
        $expiredTime = date("YmdHis", current_time('timestamp') + 1800);
        $input->SetTime_start($startTime);
        $input->SetTime_expire($expiredTime);

        $input->SetNotify_url(Order::get_checkout_notify_url($order_id, $this->id));

        $input->SetTrade_type($trade_type);
        if ($trade_type == 'JSAPI') $input->SetOpenid($openId);

        $items = Order::get_order_items($order_id);
        if ($items && $items[0] && $items[0]->type_id) {
            $product_id = $items[0]->type_id;
        } else {
            $product_id = $order_id;
        }
        $input->SetProduct_id($product_id);

        try {
            if ($trade_type == 'MWEB') {
                $result = \WxPayApi::unifiedOrder($config, $input);
                $url = isset($result['mweb_url']) ? $result["mweb_url"] : '';
                if ($url) {
                    $url .= '&redirect_url=' . urlencode(Order::get_checkout_return_url($order_id, $this->id));
                    wp_redirect($url);
                    exit;
                }
            } else if ($trade_type == 'NATIVE') {
			    $result = \WxPayApi::unifiedOrder($config, $input);
                $url = isset($result['code_url']) ? $result["code_url"] : '';
            } else if ($trade_type == 'JSAPI') {
                $result = \WxPayApi::unifiedOrder($config, $input);
                $jsApiParameters = $tools->GetJsApiParameters($result);
                if($this->is_rest && $jsApiParameters){
                    $res = json_decode($jsApiParameters, true);
                    $res['result'] = 0;
                    $res['order_id'] = $order_id;
                    Session::set('_rest_wxpay_order_'.$order_id, 'true', 30*60);
                    wp_send_json($res);
                }else{
                    Session::delete('', '_rest_wxpay_order_'.$order_id);
                }
            }
            $error_msg = '';
            if ((isset($result['result_code']) && $result['result_code'] == 'FAIL') || (isset($result['return_code']) && $result['return_code'] == 'FAIL')) {
                $error_msg =  "返回信息：" . $result['return_msg'] . " ；错误说明：" . (isset($result['err_code_des']) ? $result['err_code_des'] : '');
            }
        } catch (\Exception $e) {
            if($this->update_order_number($order_id, $result)) return false;
            $error_msg = '';
            if ((isset($result['result_code']) && $result['result_code'] == 'FAIL') || (isset($result['return_code']) && $result['return_code'] == 'FAIL')) {
                $error_msg =  "返回信息：" . $result['return_msg'] . " ；错误说明：" . $result['err_code_des'];
            }
            $error_msg = $error_msg ? $error_msg : $e->getMessage();
            if($this->is_rest){
                $res = [
                    'result' => -9,
                    'msg' => $error_msg
                ];
                wp_send_json($res);
            }else{
                echo '<div class="text-center" style="margin-bottom: 30px;color:#f66;">' . $error_msg . '</div>';
            }
            return;
        }
        if($this->update_order_number($order_id, $result)) return false;
        ?>
        <?php if ($error_msg) { ?>
            <div class="text-center" style="margin-bottom: 30px;color:#f66;">
                <span style="color:red;"><?php echo $error_msg ?></span>
            </div>
        <?php } else {
            if ($trade_type == 'NATIVE') { ?>
                <div class="wpcom-wxpay-inner">
                    <div id="j-wpcom-wxpay" class="wpcom-wxpay-img" data-url="<?php echo $url; ?>" data-order="<?php echo $order_id; ?>"></div>
                    <p class="wpcom-wxpay-note" style="line-height:2;font-size: 16px;color: #333;">使用微信扫描二维码进行支付</p>
                </div>
            <?php } else if ($trade_type == 'JSAPI') { ?>
                <script type="text/javascript">
                    window.WPCOM_WXPay_jsApiParameters = <?php echo $jsApiParameters; ?>;
                    window.onload = function(){WPCOM_WXPay_callpay();}
                </script>
                <div class="text-center" style="margin-bottom: 30px;padding: 15px 0;">
                    <button id="j-wpcom-wxpay2" data-order="<?php echo $order_id; ?>" style="width:100%;height:48px;border-radius: 5px;background-color:#44b549; border:0px;color:#fff;font-size:16px;line-height: 48px;padding: 0;" type="button" onclick="WPCOM_WXPay_callpay();">立即支付</button>
                </div>
        <?php }
        } ?>
        <script src="<?php echo includes_url('js/jquery/jquery.min.js'); ?>"></script>
        <script src="<?php echo WPCOM_MP_URI . 'js/pay.js'; ?>"></script>
        <script> _ajax_url = "<?php echo admin_url( 'admin-ajax.php');?>"; _nonce = "<?php echo wp_create_nonce('wpcom_wxpay_receipt_page');?>"; </script>
    <?php }

    public function check_response($order_id) {
        if(!is_numeric($order_id)) return ;

        self::add_log('#'.$order_id.' 微信异步通知开始', $this->id);
        $xml = file_get_contents('php://input');
        if(empty($xml)) exit;

        //排除非微信回调
        if(strpos($xml, 'transaction_id')===false
            ||strpos($xml, 'appid')===false
            ||strpos($xml, 'mch_id')===false) exit;

        require_once WPCOM_MP_DIR . 'payment/wxpay/WxPay.Config.php';
        include_once WPCOM_MP_DIR . 'payment/wxpay/notify.php';

        // 如果返回成功则验证签名
        try {
            $is_rest = Session::get('_rest_wxpay_order_'.$order_id);
            if(function_exists('WWA_options') && $is_rest){
                $options = WWA_options();
                $this->_config['appid'] = isset($options['appid']) ? trim($options['appid']) : '';
            }
            $config = new WeChat_Config($this->_config);
            $notify = new \PayNotifyCallBack();
            $result = $notify->Handle($config, false);

            $values = $notify->FromXml($xml);

            self::add_log('#'.$values['out_trade_no'].' 微信异步通知数据：' . wp_json_encode($values), $this->id);
            if($result && $values['return_code'] === 'SUCCESS' && $values['result_code'] === 'SUCCESS') {
                self::add_log('#'.$values['out_trade_no'].' 微信异步通知验证成功：' . $values['result_code'] .'；微信订单：' . $values['transaction_id'], $this->id);
                $order = Order::get_order( $order_id );
                if($order && $order->number && $order->number == $values['out_trade_no'] && $order->status === 'unpaid'){ // 判断订单号，以及支付状态
                    Order::payment_complete( $order->ID,  $this->id);
                    self::add_log('#'.$values['out_trade_no'].' 订单支付完成！', $this->id);
                }
            }
            exit;
        } catch ( \WechatPaymentException $e ) {
            exit;
        }
    }

    function update_order_number($order_id, $result){
        if(isset($result["err_code_des"]) && $result["err_code_des"] === '201 商户订单号重复') {
            if(Order::update_order_number($order_id)){
                self::add_log('#'.$order_id.' 微信订单号重复，更新订单号并重新发起支付', $this->id);
                $this->receipt_page($order_id);
                return true;
            }
        }
        return false;
    }

    function is_weixin() {
        $ua = strtolower($_SERVER['HTTP_USER_AGENT'] ?? '');
        return strpos($ua, 'micromessenger') !== false;
    }
}

new Wxpay();