<?php
define('USEDCHARSET', 'utf-8');

/// 这里定义公共变量
$app_id = '14992192722868'; /// appid
$dev_key = '14915485974028'; /// 开发者key
$market_key = '0000'; /// 门店key
$sign_key = '0000'; /// 签名key(暂时支付时不校验签名, 但是退款时将校验这个签名)


/// 接口返回用的信息类
class ResultObject
{
	public $error; /// 返回值: 0成功; 非0失败;
	public $error_code; /// 错误号
	public $msg; /// 错误信息
	public $data; /// 返回的数据

	public function ResultObject($string)
	{
		$this->error = 0;
		$this->error_code = 0;
		$this->msg = null;
		$this->data = null;

		$this->from_string($string);
	}


	public function to_array()
	{
		return (array)$this;
	}

	public function to_string()
	{
		return json_encode($this, JSON_UNESCAPED_UNICODE);
	}

	public function from_array($array)
	{
		foreach ($array as $key => $value)
		{
			if (property_exists($this, $key))
			{
				$this->$key = $value;
			}
		}

		return true;
	}

	public function from_string($string)
	{
		return $this->from_array((array)json_decode($string));
	}
}


/**
 * @note 获取当前页面的完整连接
 * @return string
 */
function getLocaleUrl()
{
	$is_https =
		(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ||
		(isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') ||
		(isset($_SERVER['REQUEST_SCHEME']) && $_SERVER['REQUEST_SCHEME'] == 'https');

	$request_scheme = $is_https ? 'https://' : 'http://';
	$hostname = $_SERVER['SERVER_NAME'];
	$hostport = (($is_https && '443' == $_SERVER['SERVER_PORT']) || (!$is_https && '80' == $_SERVER['SERVER_PORT'])) ? '' : ':' . intval($_SERVER['SERVER_PORT']);

	return $request_scheme . $hostname . $hostport . $_SERVER['PHP_SELF'];
}


/**
 * @date 2017-03-04
 * @note 给参数按key的顺序排序。（支持递归）
 * @param mixed $parameter 要排序的参数
 * @return array
 * @auth 应俊
 */
function SortParam($parameter)
{
	$parameter = (array)$parameter;
	foreach ($parameter as $k => $v)
	{
		if (is_array($v) || is_object($v))
		{
			$parameter[$k] = SortParam($v);
		}
	}

	// 调用strcmp函数来排序，该函数区分大小写。
	uksort($parameter, 'strcmp');
	return $parameter;
}


/**
 * @date 2017-03-06
 * @note 转换参数成字符串形式按key=value的形式，用&分隔）。
 * @param mixed $parameter 要转换的参数
 * @return string
 * @auth 应俊
 */
function ConvertParam($parameter)
{
	$parameter = (array)$parameter;
	$return = '';
	foreach ($parameter as $k => $v)
	{
		if (is_array($v) || is_object($v))
		{
			$return .= sprintf('&%s={%s}', $k, ConvertParam($v));
		}
		else
		{
			$return .= sprintf('&%s=%s', $k, $v);
		}
	}

	$sublen = mb_strlen('&', USEDCHARSET);
	$retlen = mb_strlen($return, USEDCHARSET);
	$return = mb_substr($return, $sublen, $retlen - $sublen, USEDCHARSET);
	return $return;
}


/**
 * @date 2017-03-04
 * @note 为参数生成签名
 * @param mixed $parameter 要签名的参数
 * @param string $signkey 签名key
 * @return string
 * @auth 应俊
 */
function SignParameter($parameter, $signkey = '')
{
	// 1：先把参数按参数名（key）从小到大排序
	$parameter = SortParam($parameter);

	// 2：连接参数成一个字符串（按key=value的形式，用&分隔）。
	$return = ConvertParam($parameter);

	// 3：结尾加上key=签名key
	$return .= '&key=' . $signkey;

	// 4：md5加密这个字符串
	return md5($return);
}


/**
 * @param mixed $data
 * @return array|mixed
 */
function ChangePostData($data)
{
	switch (gettype($data))
	{
		case 'array':
		{
			foreach ($data as $key => $value)
			{
				$data[$key] = ChangePostData($value);
			}
			break;
		}

		case 'object':
		{
			$array = (array)$data;
			foreach ($array as $key => $value)
			{
				$data->$key = ChangePostData($value);
			}
			break;
		}

		default:
		{
			$data = preg_replace_callback('/\+/', function ($r) { return '%2B'; }, $data);
			$data = preg_replace_callback('/\&/', function ($r) { return '%26'; }, $data);
			break;
		}
	}

	return $data;
}


/**
 * @note 发送post请求
 * @param string $url
 * @param mixed $data
 * @return string
 */
function SendPost($url, $data)
{
	$data = http_build_query(ChangePostData($data));

	$opts = array(
		'http' => array(
			'method' => 'POST',
			'header' => "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($data) . "\r\n",
			'content' => $data,
		),
	);

	$context = stream_context_create($opts);
	$ret = file_get_contents($url, false, $context);
	$ret = trim($ret, "\xEF\xBB\xBF");
	return $ret;
}


?>
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>支付测试</title>
	<meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no">
	<link href="css/style.css" rel="stylesheet">

	<script src="js/jquery-2.1.4.min.js"></script>
	<script src="js/common.js"></script>
</head>
<body id="mainbody">
<?php
	/// 尝试获取sid和scode
	$sid = isset($_REQUEST['sid']) ? $_REQUEST['sid'] : '';
	$scode = isset($_REQUEST['scode']) ? $_REQUEST['scode'] : '';

	/// 判断是否有sid和scode, 什么数据都没有则先跳转到登录页面授权
	if (empty($sid) || empty($scode))
	{
		$url = "https://api.tscce.cn/source/login/login.php?app_id={$app_id}&dev_key={$dev_key}&market_key={$market_key}&redirect_uri=" . rawurlencode(getLocaleUrl());
		header("Location: {$url}");
		exit;
	}
	elseif (!isset($_REQUEST['fee'])) /// 有sid和scode 但是 没有fee 则要求页面输入并提交fee参数
	{
		$html = <<<EOL
<script>
	function submit() {
		var fee = document.getElementById('fee').value;

		if ('' == fee || undefined == fee) {
			alert('请输入要支付的金额(单位为分)');
			return;
		}

		var script =
		"<form style='display:none;' id='frm' name='frm' method='post' action=''>" +
		"	<input name='fee' type='text' value='" + fee + "' />" + /// 支付金额(单位分)
		"</form>";

		$('#mainbody').append(script);
		$('#frm').submit();
	}
</script>

<section>
	<header class="header"><span>支付测试</span></header>
	<div class="neirong">
		<ul>
			<li><span class="name">总金额：</span><input id="fee" type="text" autofocus placeholder="单位：分 整型" class="input"> <sapn class="red">*</sapn></li>
		</ul>
		<footer class="text-center"><a href="javascript:;"  onclick="submit();" class="btn btn-blue foot_btn">确定</a></footer>
	</div>
</section>
EOL;
	}
	else /// 有fee参数表示已提交页面中输入的支付金额
	{
		/// 通过接口获取门店所支援的支付方式
		$data = array(
			'appid' => $app_id, /// appid
			'devkey' => $dev_key, /// 开发者key
			'market_key' => $market_key, /// 门店key
			'level' => 1, /// 支付类型(1: 线上, 2: 扫码, 3: app)
			'version' => 1, /// 版本号
		);

		$data['sign'] = SignParameter($data, $sign_key);
		$result = new ResultObject(rawurldecode(SendPost('https://api.tscce.cn/api/newpay/querylist', $data)));

		if (0 == $result->error && count($result->data) > 0) /// 成功
		{
			/// 这里为了演示, 只判断了第一个支付方式, 实际应该先判断当前用户的运行环境, 然后才去决定使用哪种支付通道(微信或支付宝等)
			$pay_type = $result->data[0]->type_id;

			$order_id = date('YmdHis') . rand(1000, 9999); /// 随机生成一个订单号
			$notice_url = dirname(getLocaleUrl()) . '/notice.php'; /// 通知页面地址
			$return_url = getLocaleUrl() . "?sid={$sid}&scode={$scode}"; /// 回调地址
			$fee = $_REQUEST['fee'];

			$data = array(
				'appid' => $app_id, /// appid
				'devkey' => $dev_key, /// 开发者key
				'sid' => $sid, /// sid
				'scode' => $scode, /// scode
				'orderid' => $order_id, /// 订单号
				'fee' => $fee, /// 支付金额(单位分)
				'title' => 'test', /// 支付标题
				'notice_url' => $notice_url, /// 回调页面地址(异步)
				'return_url' => $return_url, /// 回调页面地址(同步)
				'paytype' => $pay_type, /// 支付类型(可通过接口获取所有支持的类型列表)
				'p1' => 'p1', /// 附加的其他参数, 回调时会原样返回, 参数名可自定义
				'p2' => 'p2', /// 附加的其他参数, 回调时会原样返回, 参数名可自定义
				'version' => 1, /// 接口版本号, 整型, 目前只支持1
			);
			$data['sign'] = SignParameter($data, $sign_key);

			$html = <<<EOF
<form style="display:none;" id="frm" name="frm" method="post" action="https://api.tscce.cn/api/newpay/pay/online/">
	<input name="appid" type="text" value="{$data['appid']}" />
	<input name="devkey" type="text" value="{$data['devkey']}" />
	<input name="sid" type="text" value="{$data['sid']}" />
	<input name="scode" type="text" value="{$data['scode']}" />
	<input name="orderid" type="text" value="{$data['orderid']}" />
	<input name="fee" type="text" value="{$data['fee']}" />
	<input name="title" type="text" value="{$data['title']}" />
	<input name="notice_url" type="text" value="{$data['notice_url']}" />
	<input name="return_url" type="text" value="{$data['return_url']}" />
	<input name="paytype" type="text" value="{$data['paytype']}"/>
	<input name="p1" type="text" value="{$data['p1']}"/>
	<input name="p2" type="text" value="{$data['p2']}"/>
	<input name="version" type="text" value="{$data['version']}"/>
	<input name="sign" type="text" value="{$data['sign']}"/>
</form>

<script>
	frm.submit();
</script>
EOF;
		}
		elseif (0 != $result->error) /// 有错误发生
		{
			$html = <<<EOL
<script>
	alert('{$result->msg}');
</script>
EOL;
		}
		else
		{
			$html = <<<EOL
<script>
	alert('该门店不支援任何的支付方式!');
</script>
EOL;
		}
	}

	echo $html;

	?>
</body>
</html>