yfix/yf

<?php

class LiqPay
{
    protected $_key_public;
    protected $_key_private;

    public function __construct($key_public, $key_private)
    {
        if (empty($key_public)) {
            throw new InvalidArgumentException('key_public is empty');
        }
        if (empty($key_private)) {
            throw new InvalidArgumentException('key_private is empty');
        }
        $this->_key_public = $key_public;
        $this->_key_private = $key_private;
    }

    public function key($name = 'public', $value = null)
    {
        if ( ! in_array($name, ['public', 'private'])) {
            return  null;
        }
        $_name = '_key_' . $name;
        $_value = &$this->{ $_name };
        // set
        if ( ! empty($value) && is_string($value)) {
            $_value = $value;
        }
        // get
        return  $_value;
    }

    public function api($url, $options = [])
    {
        $url = 'https://www.liqpay.com/api/' . $url;
        $key_public = $this->_key_public;
        $key_private = $this->_key_private;
        $data['public_key'] = $key_public;
        $data = json_encode(array_merge($data, $options));
        $str = ''
            . $key_private
            . $data
            . $key_private;
        $signature = $this->str_to_sign($str);
        $post = "data={$data}&signature={$signature}";
        // curl
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $response = curl_exec($ch);
        curl_close($ch);
        return  json_decode($response);
    }

    public function signature($options, $is_request = true)
    {
        is_array($options) && extract($options, EXTR_PREFIX_ALL | EXTR_REFS, '');
        $data = [];
        array_push(
            $data,
            $this->key('private'),
            $_amount,
            $_currency,
            $_public_key,
            $_order_id,
            $_type,
            $_description
        );
        if ($is_request) {
            array_push(
                $data,
                $_result_url,
                $_server_url
            );
        } else {
            array_push(
                $data,
                $_status,
                $_transaction_id,
                $_sender_phone
            );
        }
        $str = implode('', $data);
        $result = $this->str_to_sign($str);
        return  $result;
    }


    public function str_to_sign($str)
    {
        $result = base64_encode(sha1($str, 1));
        return  $result;
    }
}