demopay

<?php

namespace App\Service\Pay;

/**
 * TaiwanPay
 */
class TaiwanPay
{
	/**
	 * 測試端點
	 */
	const TEST_END_POINT = "https://www.focas-test.fisc.com.tw/FOCAS_WS/API20/QRP/V2";

	/**
	 * 營運端點
	 */
	const MAIN_END_POINT = "https://www.focas.fisc.com.tw/FOCAS_WS/API20/QRP/V2";

	/**
	 * 端末代碼
	 * @var string
	 */
	private $terminalId;

	/**
	 * 特店代碼
	 * @var string
	 */
	private $merchantId;

	/**
	 * 交易類型
	 * @var integer
	 */
	private $txnType;

	/**
	 * AES IV值
	 * @var string
	 */
	private $aesIV;

	/**
	 * AES KEY
	 * @var string
	 */
	private $aesKey;

	/**
	 * 返回網址
	 */
	private $returnUrl;

	/**
	 * 是否為測試
	 * @var boolean
	 */
	public $isTest;

	/**
	 * 事業名稱
	 * @var string
	 */
	public $careerName;

	/**
	 * 交易金額
	 * @var integer
	 */
	public $price;

	/**
	 * 訂單編號
	 * @var string
	 */
	public $orderNumber;

	/**
	 * 安全碼
	 * @var string
	 */
	public $secureCode;

	/**
	 * 收單行代碼
	 * @var string
	 */
	public $acqBank;

	/**
	 * QRCode 到期時間
	 * @var string
	 */
	public $qrcodeExpiredAt;

	/**
	 * 訂單名稱
	 * @var string
	 */
	public $orderName;

	function __construct()
	{
		$this->isTest = false;
	}

	/**
	 * 是否在測試
	 * @param  boolean $enable 開關
	 * @return TaiwanPay       自身類別物件
	 */
	public function isDebug($enable = true) : TaiwanPay
	{
		$this->isTest = $enable;
		return $this;
	}

	/**
	 * 設置屬性
	 * @param array $datas 設定訂單資料
	 * @return TaiwanPay   自身類別物件
	 */
	public function setOrderDatas(array $datas) : TaiwanPay
	{
		if (isset($datas['terminalId'])) $this->terminalId = $datas['terminalId'];
		if (isset($datas['merchantId'])) $this->merchantId = $datas['merchantId'];
		if (isset($datas['txnType'])) $this->txnType = $datas['txnType'];
		if (isset($datas['aesIV'])) $this->aesIV = $datas['aesIV'];
		if (isset($datas['aesKey'])) $this->aesKey = $datas['aesKey'];
		if (isset($datas['returnUrl'])) $this->returnUrl = $datas['returnUrl'];
		if (isset($datas['careerName'])) $this->careerName = $datas['careerName'];
		if (isset($datas['price'])) $this->price = $datas['price'];
		if (isset($datas['orderNumber'])) $this->orderNumber = $datas['orderNumber'];
		if (isset($datas['secureCode'])) $this->secureCode = $datas['secureCode'];
		if (isset($datas['acqBank'])) $this->acqBank = $datas['acqBank'];
		if (isset($datas['qrcodeExpiredAt'])) $this->qrcodeExpiredAt = $datas['qrcodeExpiredAt'];
		if (isset($datas['orderName'])) $this->orderName = $datas['orderName'];

		return $this;
	}

	/**
	 * 創建訂單
	 * @param  boolean $isQrcode 是否為 QRCode
	 * @return boolean           是否完成
	 */
	public function createOrder($isQrcode = true)
	{
		$qrcodeScheme = urlencode("TWQRP://{$this->careerName}/158/01/V1?D1={$this->price}&D3={$this->secureCode}&D11={$this->acqBank}&D12={$this->qrcodeExpiredAt}&OprodNumber={$this->orderName}");

		$qrcodeScheme = "TWQRP://星九客咖啡/158/01/V1?D1=12500&D3=AVnVbcN9xxRv&D10=901&D11=00,00600611122233344400000001;01,00600611122233344400000001;04,00800899887766554400000001&D12=20170630130000&OprodNumber=拿鐵";

		return $this->encodeQrcode($qrcodeScheme);

		$datas = [
			// 交易類型
			"acqBank" => $this->acqBank,
			"encQRCode" => $this->encodeQrcode($qrcodeScheme),
			"encRetURL" => $this->encodeQrcode($this->returnUrl, true),
			"merchantId" => $this->merchantId,
			"orderNumber" => $this->orderNumber,
			"terminalId" => $this->terminalId,
			"txnType" => $this->txnType,
		];

		$datas["verifyCode"] = $this->sign($datas);

		return $this->postData("/WebToAppReq", $datas);
	}

	/**
	 * QRCode 加密
	 * @return string 加密後 Base64 -> UrlEncode
	 */
	public function encodeQrcode(string $unsignedData, $isUrl = false) : string
	{
		$lenDec = dechex(strlen(urlencode($unsignedData)));
		$lenHex = "0x" . $this->padding($lenDec, ($isUrl) ? 6 : 4);

		$inputStr = strtoupper($lenHex . bin2hex(utf8_encode(urlencode($unsignedData))));

		// 這邊不對, 待處理
		return $signed = openssl_encrypt($inputStr, 'aes-256-cbc', $this->aesKey, 0, $this->aesIV);
		return $signed;
		return urlencode(base64_encode("0x02" . $signed));
	}

	/**
	 * 位元補零
	 * @param  string $str       待補字串
	 * @param  int    $paddingTo 補齊到幾位元
	 * @return string            字串結果
	 */
	public static function padding(string $str, int $paddingTo) : string
	{
		for ($i = strlen($str); $i < $paddingTo; $i++) {
			$str = "0" . $str;
		}
		return $str;
	}

	/**
	 * 簽名
	 * @param  array  $unsignedDatas [description]
	 * @return [type]                [description]
	 */
	public function sign(array $unsignedDatas)
	{
		ksort($unsignedDatas);
		$str = implode("", $unsignedDatas);
		return hash("sha256", $str . $this->aesKey);
	}

	/**
	 * 發送 HTTP Request
	 * @param  string $path  路徑
	 * @param  array  $datas 發送資料
	 * @return string        回應
	 */
	private function postData(string $path, $datas = [])
	{
		if ($this->isTest) $url = $this::TEST_END_POINT . $path;
		else $url = $this::MAIN_END_POINT . $path;

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_POST, true);
		curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($datas)); 
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
		$output = curl_exec($ch);
		curl_close($ch);

		return $output;
	}
}