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

defined('ABSPATH') || exit;

class Wxpay_Xunhu extends Payment {
    protected $_config;
	protected $is_rest = false;
    public function __construct() {
        $this->id = 'wxpay-xunhu';
        $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
        $this->_config = array();

		$type = isset($_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_'.$this->id.'_order_status', array($this, 'order_status'));
        add_action('wp_ajax_nopriv_WPCOM_'.$this->id.'_order_status', array($this, 'order_status'));

        parent::__construct();
    }

    public function init($index){
        $appid = wpcom_mp_options('wxpay_appid');
        $secret = wpcom_mp_options('wxpay_secret');
        $tranasction_url = wpcom_mp_options('pay_tranasction_url');
        $this->_config = array(
            'appid' => $appid && isset($appid[$index]) ? trim($appid[$index]) : '',
            'secret' => $secret && isset($secret[$index]) ? trim($secret[$index]) : '',
            'tranasction_url' => $tranasction_url && isset($tranasction_url[$index]) && $tranasction_url[$index] ? trim($tranasction_url[$index]) : 'https://api.xunhupay.com/payment/do.html',
        );
    }

	public function receipt_page($order_id) {
        $order = Order::get_order($order_id);
        if (!$order || $order->status === 'paid') return;
        if($this->is_rest && preg_match('/wxpay/i', $this->id)){
			$data = $this->get_pay_data($order);
			// 支付网关为：https://api.xunhupay.com 跳转小程序APPID：wx2574b5c5ee8da56b，其他支付网关跳转小程序APPID：wx402faa5bd5eda155
			$appid = preg_match('/\/\/api\.xunhupay\.com/i', $this->_config['tranasction_url']) ? 'wx2574b5c5ee8da56b' : 'wx402faa5bd5eda155';
			$res = array(
				'result' => 0,
				'order_id' => $order_id,
				'appid' => $appid,
				'data' => $data
			);
			wp_send_json($res);
		}else if(!$this->is_mobile()) {
			$result = $this->post_payment_api($order);
			if (is_wp_error($result)) { ?>
				<div class="text-center" style="margin-bottom: 30px;color:#f66;">
					<span style="color:red;"><?php echo $result->get_error_message(); ?></span>
				</div>
			<?php } else if($result && isset($result['url_qrcode'])){ ?>
				<div class="wpcom-wxpay-inner">
					<div id="j-wpcom-xhpay" class="wpcom-wxpay-img" data-type="<?php echo esc_attr($this->id);?>" data-order="<?php echo $order_id; ?>">
						<img src="<?php echo esc_url($result['url_qrcode']);?>" style="width:240px;height:240px;">
					</div>
					<p class="wpcom-wxpay-note" style="line-height:2;font-size: 16px;color: #333;">使用<?php echo preg_match('/wxpay/i', $this->id) ? '微信' : '支付宝';?>扫描二维码进行支付</p>
				</div>
				<script src="<?php echo includes_url('js/jquery/jquery.min.js'); ?>"></script>
				<script src="<?php echo WPCOM_MP_URI . 'js/pay.js'; ?>"></script>
				<script> _ajax_url = "<?php echo admin_url( 'admin-ajax.php');?>"; _nonce = "<?php echo wp_create_nonce('wpcom_'.$this->id.'_receipt_page');?>"; </script>
		<?php }
		}
	}

	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_'.$this->id.'_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') {
                $res = array(
                    'redirect' => Order::get_checkout_return_url($order->ID, $this->id),
                    'status' => 'paid'
                );
                wp_send_json($res);
            }
        }
    }

	public static function getNonceStr($length = 32){
		$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
		$str ="";
		for ( $i = 0; $i < $length; $i++ )  {
			$str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
		}
		return $str;
	}

    public function process_payment($order_id) {
        $order = Order::get_order($order_id);
        if (!$order || $order->status === 'paid'){
		    return array (
		        'result' => 'success',
		        'redirect' => Order::get_checkout_return_url($order->ID, $this->id)
		    );
		}

		if(!$this->is_mobile()){
			$url = Order::get_checkout_payment_url($order_id);
			return array(
				'result' => 'success',
				'redirect' =>  $url,
				'height' => '472px',
				'modal-size' => 'modal-sm'
			);
		}

		$result = $this->post_payment_api($order);
		if(is_wp_error($result)){
			return array(
		        'result' => 'fail',
                'msg' => $result->get_error_message(),
		        'redirect' => Order::get_checkout_return_url($order->ID, $this->id)
		    );
		}else if($result && isset($result['url'])){
			return array(
		        'result'  => 'success',
		        'redirect'=> $result['url']
		    );
		}
    }

	protected function post_payment_api($order){
		if($order && isset($order->ID) && $order->ID){
			$data = $this->get_pay_data($order);
			$url  = $this->_config['tranasction_url'];
			try {
				$response     = $this->http_post($url, wp_json_encode($data));
				$result       = $response ? json_decode($response, true) : null;
				if(!$result){
					return new \WP_Error('request_payment_api_err', 'Internal server error');
				}

				$hash         = $this->makeSign($result, $this->_config['secret']);
				if(!isset( $result['hash'])|| $hash!=$result['hash']){
					return new \WP_Error('request_payment_api_err', __('Invalid sign!', WPCMP_TD));
				}

				if($result['errcode']!=0){
					return new \WP_Error('request_payment_api_err', $result['errcode'] . ' - ' . $result['errmsg']);
				}
				self::add_log("#" . $order->ID . " 发起虎皮椒支付请求", $this->id);

				return $result;
			} catch (\Exception $e) {
				self::add_log("#".$order->ID." errcode:{$e->getCode()},errmsg:{$e->getMessage()}", $this->id);
				return new \WP_Error('request_payment_api_err', $e->getCode() . ' - ' . $e->getMessage());
			}
		}
	}

	protected function get_pay_data($order){
		if($order && isset($order->ID) && $order->ID){
			$total_amount = round($order->price, 2);
			$data = array(
				'version'   => '1.1',
				'plugins'   => 'wpcom-member-pro',
				'appid'     => $this->_config['appid'],
				'trade_order_id' => $order->number,
				'total_fee' => $total_amount,
				'title'     => $this->get_order_title($order),
				'time'      => time(),
				'notify_url' =>  Order::get_checkout_notify_url($order->ID, $this->id),
				'nonce_str' => $this->getNonceStr()
			);
			if($this->is_rest && preg_match('/wxpay/i', $this->id)){
				$data['type'] = 'JSAPI';
				$data['wap_url'] = $this->_config['tranasction_url'];
			}else{
				$data['return_url'] = Order::get_checkout_return_url($order->ID, $this->id);
				$data['callback_url'] = Order::get_checkout_return_url($order->ID, $this->id);
			}

			if($this->is_mobile() && preg_match('/wxpay/i', $this->id)){
				$data['type'] = 'WAP';
				$data['wap_url'] = home_url();
				$data['wap_name'] = home_url();
			}

			$data['hash'] = $this->makeSign($data, $this->_config['secret']);
			return $data;
		}
	}

    public function check_response($order_id) {
		if(!is_numeric($order_id)) return ;
		
	    $data = $_POST;
	    if(!isset($data['hash']) || !isset($data['trade_order_id'])){
	        return;
	    }
	    if(isset($data['plugins']) && $data['plugins']!='wpcom-member-pro'){
	        return;
	    }

        self::add_log('#虎皮椒异步通知数据：' . wp_json_encode($_POST), $this->id);

	    $appkey = $this->_config['secret'];
	    $hash = $this->makeSign($data, $appkey);
	    if($data['hash']!=$hash){
	        return;
	    }

        $order = Order::get_order( $order_id );
	    try{
	        if(!$order){
	            throw new \Exception('Unknow Order (id:'.$data['trade_order_id'].', '.$order_id.')');
	        }

            self::add_log('#'.$data['trade_order_id'].' 异步通知验证成功：' . $data['status'] .'；虎皮椒订单：' . $data['open_order_id'], $this->id);
            if($data['status']=='OD' && $order && $order->number && $order->number == $data['trade_order_id'] && $order->status === 'unpaid'){ // 判断订单号，以及支付状态
                Order::payment_complete( $order->ID,  $this->id);
                self::add_log('#'.$data['trade_order_id'].' 订单支付完成！', $this->id);
                echo "success";
            }
	    }catch(\Exception $e){
	        echo $e->getMessage();
	        exit;
	    }
    }

    protected function http_post($url,$data){
	    if(!function_exists('curl_init')){
	        throw new \Exception('php未安装curl组件',500);
	    }
	    $ch = curl_init();
	    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
	    curl_setopt($ch,CURLOPT_URL, $url);
	    curl_setopt($ch,CURLOPT_REFERER,get_option('siteurl'));
	    curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
	    curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
	    curl_setopt($ch, CURLOPT_HEADER, FALSE);
	    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
	    curl_setopt($ch, CURLOPT_POST, TRUE);
	    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
	    $response = curl_exec($ch);
	    $httpStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
	    $error=curl_error($ch);
	    curl_close($ch);
	    if($httpStatusCode!=200){
	        throw new \Exception("invalid httpstatus:{$httpStatusCode} ,response:$response,detail_error:".$error,$httpStatusCode);
	    }

	    return $response;
	}

	public function makeSign($data, $key){
		//签名步骤一：按字典序排序参数
		ksort($data);
		$string = '';
		foreach ($data as $k => $v){
			if($k === 'hash' || is_null($v) || $v === ''){continue;}
			$string .= $k . "=" . $v . "&";
		}
		$string = trim($string, "&");
		//签名步骤二：在string后加入KEY
		$string = $string . $key;
		//签名步骤三：MD5加密或者HMAC-SHA256
		$string = md5($string);
		//签名步骤四：所有字符转为小写
		$result = strtolower($string);
		return $result;
	}
}

new Wxpay_Xunhu();