Simple Giftbit Curl Library

GiftbitService.php

<?php namespace App;

class GiftBit {

    private $endpoint;
    private $authorization;

    public function init ( $endpoint, $key )
    {
        if ( empty($endpoint) || empty($key) )
        {
            throw new \Exception('GiftBit API Endpoint Not Set.');
        }

        $this->endpoint      = $endpoint;
        $this->authorization = $key;
    }

    public function redeem( $code, $amount, $trans_id, $currency = 'USD' )
    {
        $data = (object) array (
            'success' => false,
            'currency' => '',
            'value' => 0,
            'code' => htmlentities($code),
            'expires' => '',
            'trans_time' => '',
            'message' => ''
        );

        $post_data = (object) array (
            'amountInCents' => (float)$amount * 100,
            'currency'      => $currency,
            'transactionId' => (string)$trans_id
        );

        $response = $this->_request( 'POST', 'giftbitCode/' . $code, $post_data );

        if ( isset( $response->status ) )
        {
            switch ( $response->status ) {
                case 'success':
                    $data->success = true;
                    $data->currency = $response->data->giftbitCode->currency;
                    $data->value = $this->_parseAmountFromCents($response->data->giftbitCode->transactionAmountInCents);
                    $data->expires = $response->data->giftbitCode->expires;
                    $data->trans_time = $response->data->giftbitCode->transactionTime;
                    break;

                case 'error':
                    $data->message = $response->message;
                    break;
                
                default:
                    $data->message = 'Request Error';
                    break;
            }
        }

        return $data;
    }
    
    private function _parseAmountFromCents( $cents )
    {
        return round( ((float)$cents / 100), 2 );
    }

    private function _request ( $method, $uri, $post_data = NULL )
    {
        $ch = curl_init();

        curl_setopt( $ch, CURLOPT_URL, $this->endpoint . '/' . $uri );
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, TRUE );
        curl_setopt( $ch, CURLOPT_HEADER, FALSE );

        if ( 'POST' == strtoupper($method) )
        {
            curl_setopt($ch, CURLOPT_POST, TRUE);
        }

        if ( ! is_null($post_data) )
        {
            curl_setopt($ch, CURLOPT_POSTFIELDS, "{
                \"amountInCents\": $post_data->amountInCents,
                \"currency\": \"$post_data->currency\",
                \"transactionId\": \"$post_data->transactionId\"
            }");
        }

        curl_setopt( $ch, CURLOPT_HTTPHEADER, array (
            'Content-Type: application/json',
            'Authorization: Bearer ' . $this->authorization
        ));

        $response = curl_exec( $ch );
        curl_close( $ch );

        return json_decode( $response );
    }

}