Untitled

<?php


namespace App\Service;


use Exception;

class Flow
{

    const URL_DEV = 'https://sandbox.flow.cl/api';
    const URL_PROD = 'https://www.flow.cl/api';
    const SECRET_KEY_DEV = 'e97bee0d27e7189e60f63d1946ab66d4b547e530';
    const API_KEY_DEV = '32DF11A7-A099-4EA0-B926-22L912E75A91';

    public static function getSignature($params)
    {

        $secretKey = self::SECRET_KEY_DEV;

        $default = array(
            "apiKey" => self::API_KEY_DEV
        );

        $final = array_merge($default, $params);

        $keys = array_keys($final);
        sort($keys);

        $toSign = "";
        foreach ($keys as $key) {
            $toSign .= $key . $final[$key];
        };

        return hash_hmac('sha256', $toSign, $secretKey);

    }

    public static function generateUrl($product)
    {

        $response = false;

        $secretKey = self::SECRET_KEY_DEV;

        $default = array(
            "apiKey" => self::API_KEY_DEV
        );

        $params = array_merge($default, $product);

        $keys = array_keys($params);
        sort($keys);

        $toSign = "";
        foreach ($keys as $key) {
            $toSign .= $key . $params[$key];
        };

        $signature = hash_hmac('sha256', $toSign, $secretKey);

        $url = self::URL_DEV;
        $url = $url . '/payment/create';
        $params["s"] = $signature;

        try {

            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            curl_setopt($ch, CURLOPT_POST, TRUE);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

            $response = curl_exec($ch);

            if ($response === false) {
                $error = curl_error($ch);
                throw new Exception($error, 1);
            }

            $info = curl_getinfo($ch);

            if (!in_array($info['http_code'], array('200', '400', '401'))) {
                throw new Exception('Unexpected error occurred. HTTP_CODE: ' . $info['http_code'], $info['http_code']);
            }

        } catch (Exception $e) {
            echo 'Error: ' . $e->getCode() . ' - ' . $e->getMessage();
        }

        return json_decode($response);

    }

    public static function getStatus($token)
    {

        $response = false;

        $secretKey = self::SECRET_KEY_DEV;

        $params = array(
            "apiKey" => self::API_KEY_DEV,
            'token' => $token
        );

        $keys = array_keys($params);
        sort($keys);

        $toSign = "";
        foreach ($keys as $key) {
            $toSign .= $key . $params[$key];
        };

        $signature = hash_hmac('sha256', $toSign, $secretKey);

        $url = self::URL_DEV;
        $url = $url . '/payment/getStatus';
        $params["s"] = $signature;
        $url = $url . "?" . http_build_query($params);

        try {

            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

            $response = curl_exec($ch);

            if ($response === false) {
                $error = curl_error($ch);
                throw new Exception($error, 1);
            }

            $info = curl_getinfo($ch);

            if (!in_array($info['http_code'], array('200', '400', '401'))) {
                throw new Exception('Unexpected error occurred. HTTP_CODE: ' . $info['http_code'], $info['http_code']);
            }

        } catch (Exception $e) {
            echo 'Error: ' . $e->getCode() . ' - ' . $e->getMessage();
        }

        return json_decode($response);
    }

}