<?php
/**
 * 經銷商串接-直接交易-Apple Pay
 */
final class AgentApplepay
{
    /**
     * 經銷商商務代號
     * @var string
     */
    public $agentUid = "A1234567891002";
    /**
     * 經銷商金鑰或認證碼
     * @var string
     */
    public $agentKey = "nq8KL8qNNCW12A3TBfAp4lU0y3PED8IQ";
    /**
     * 特約商店商務代號(代特約商店發動)
     * @var string
     */
    public $storeUid = "289151880002";
    /**
     * 串接交易位置
     * @var string
     */
    public $url = "https://pay.usecase.cc/api/agent";
    /**
     * 取得串接欄位資料
     * @return array
     */
    public function getRawData()
    {
        $rawData = array();
        $rawData['store_uid'] = $this->storeUid;
        $rawData['items'] = [['id' => '1',
            'name' => '商品名稱',
            'cost' => '10',
            'amount' => '1',
            'total' => '10']];
        $rawData['cost'] = 10;
        $rawData['user_id'] = "phper";
        $rawData['order_id'] = "1234567890";
        $rawData['ip'] = "127.0.0.1"; // 此為消費者IP，會做為驗證用
        $rawData['pfn'] = "APPLEPAY";
        $rawData['data_json'] = '{"paymentData":{"version":"RSA_v1","data":"","signature":"","header":{"publicKeyHash":"","transactionId":"","wrappedKey":""}},"paymentMethod":{"displayName":"Visa 0492","network":"Visa","type":"debit"},"transactionIdentifier":""}';

        return $rawData;
    }
    /**
     * 取得服務位置
     * @return array
     */
    public function getService()
    {
        return array(
            'service_name' => 'api',
            'cmd' => 'api/transaction'
        );
    }
    /**
     * AES 256 加密
     * @param array $fields
     * @param string $key
     * @return string
     */
    public function encrypt($fields, $key)
    {
        $data = json_encode($fields);
        $size = openssl_cipher_iv_length('AES-256-CBC');
        $iv   = openssl_random_pseudo_bytes($size);
        $data = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
        $data = base64_encode($iv . $data);
        return $data;
    }
    /**
     * 資料 POST 到主機
     * @param array $postData
     * @return mixed
     */
    public function post($postData = [])
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $this->url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
    /**
     * 取得送出欄位資料
     * @return array
     */
    public function getPostData ()
    {
        $postData = array();
        $postData['agent_uid'] = $this->agentUid;
        $postData['service'] = $this->encrypt($this->getService(), $this->agentKey);
        $postData['encry_data'] = $this->encrypt($this->getRawData(), $this->agentKey);
        return $postData;
    }
    /**
     * 執行
     */
    public function run()
    {
        $json = $this->post($this->getPostData());
        echo $json;
    }
}

$AgentApplepay = new AgentApplepay();
$AgentApplepay->run();
?>