<?php
/**
 * Created by PhpStorm.
 * User: whwyy
 * Date: 2018/3/26 0026
 * Time: 10:22
 */
namespace wchat;

class Recharge extends Base
{
	
	/** @var Recharge */
	private static $recharge;
	
	private $money = 0;
	
	private $orderNo;
	
	private $data = [];
	
	/**
	 * @param int $money
	 * @param string $orderNo
	 * @return bool|Result
	 */
	public function payment(int $money, string $orderNo, $openId = null)
	{
		$_this = $this;
		if ($money < 0) {
			return new Result(['code' => 500, 'message' => '充值金额不能小于0.']);
		}
		$this->money = $money;
		$this->orderNo = $orderNo;
		$this->data['openid'] = $openId;
		return http::post($this->createPayUrl(), $this->builder(),
			function ($result, $body) use ($_this) {
				$data = $_this->toArray($result);
				if(isset($data['sign'])){
					$sign = $data['sign'];
					unset($data['sign']);
					$_sign = $_this->sign($data);
				}
				$return = [];
				if (!isset($sign) || $sign != $_sign) {
					$return['code'] = -1;
					$return['message'] = $data['return_msg'] ?? '返回数据签名验证失败';
				} else {
					if ($data['return_code'] == 'FAIL') {
						$return['code'] = -1;
						$return['message'] = $data['return_msg'];
					} else {
						$return['code'] = 0;
						$return['data'] = $data;
						$return['data']['postBody'] = $body;
					}
				}
				return $return;
			}, ['Content-Type' => 'text/xml']
		);
	}
	
	
	
	/**
	 * @return string
	 */
	protected function builder()
	{
		$data = [
			'appid' => $this->app_id,
			'mch_id' => $this->mch_id,
			'nonce_str' => $this->random(32),
			'body' => $this->body,
			'out_trade_no' => $this->orderNo,
			'total_fee' => $this->money,
			'sign_type' => $this->sign_type,
			'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
			'notify_url' => $this->notify_url,
			'trade_type' => $this->trade_type,
		];
		
		$data = array_merge($data, $this->data);
		
		$data['sign'] = $this->sign($data);
		
		return $this->toXml($data);
	}
	
	private function createPayUrl()
	{
		return $this->mch_host . '/pay/unifiedorder';
	}
}