<?php
/**
* Created by PhpStorm.
* User: ShaOn
* Date: 8/28/2019
* Time: 3:42 PM
*/
namespace App\Classes;
class CoinPaymentsAPI
{
private $private_key = '';
private $public_key = '';
private $ch = null;
public function Setup($private_key, $public_key) {
$this->private_key = $private_key;
$this->public_key = $public_key;
$this->ch = null;
}
/**
* Gets the current CoinPayments.net exchange rate. Output includes both crypto and fiat currencies.
* @param short If short == TRUE (the default), the output won't include the currency names and confirms needed to save bandwidth.
*/
public function GetRates($short = TRUE) {
$short = $short ? 1:0;
return $this->api_call('rates', array('short' => $short));
}
/**
* Gets your current coin balances (only includes coins with a balance unless all = TRUE).<br />
* @param all If all = TRUE then it will return all coins, even those with a 0 balance.
*/
public function GetBalances($all = FALSE) {
return $this->api_call('balances', array('all' => $all ? 1:0));
}
/**
* Creates a basic transaction with minimal parameters.<br />
* See CreateTransaction for more advanced features.
* @param amount The amount of the transaction (floating point to 8 decimals).
* @param currency1 The source currency (ie. USD), this is used to calculate the exchange rate for you.
* @param currency2 The cryptocurrency of the transaction. currency1 and currency2 can be the same if you don't want any exchange rate conversion.
* @param buyer_email Set the buyer's email so they can automatically claim refunds if there is an issue with their payment.
* @param address Optionally set the payout address of the transaction. If address is empty then it will follow your payout settings for that coin.
* @param ipn_url Optionally set an IPN handler to receive notices about this transaction. If ipn_url is empty then it will use the default IPN URL in your account.
*/
public function CreateTransactionSimple($amount, $currency1, $currency2, $buyer_email, $address='', $ipn_url='') {
$req = array(
'amount' => $amount,
'currency1' => $currency1,
'currency2' => $currency2,
'buyer_email' => $buyer_email,
'address' => $address,
'ipn_url' => $ipn_url,
);
return $this->api_call('create_transaction', $req);
}
public function CreateTransaction($req) {
return $this->api_call('create_transaction', $req);
}
/**
* Creates an address for receiving payments into your CoinPayments Wallet.<br />
* @param currency The cryptocurrency to create a receiving address for.
* @param ipn_url Optionally set an IPN handler to receive notices about this transaction. If ipn_url is empty then it will use the default IPN URL in your account.
*/
public function GetCallbackAddress($currency, $ipn_url = '') {
$req = array(
'currency' => $currency,
'ipn_url' => $ipn_url,
);
return $this->api_call('get_callback_address', $req);
}
/**
* Creates a withdrawal from your account to a specified address.<br />
* @param amount The amount of the transaction (floating point to 8 decimals).
* @param currency The cryptocurrency to withdraw.
* @param address The address to send the coins to.
* @param auto_confirm If auto_confirm is TRUE, then the withdrawal will be performed without an email confirmation.
* @param ipn_url Optionally set an IPN handler to receive notices about this transaction. If ipn_url is empty then it will use the default IPN URL in your account.
*/
public function CreateWithdrawal($amount, $currency, $address, $auto_confirm = FALSE, $ipn_url = '') {
$req = array(
'amount' => $amount,
'currency' => $currency,
'address' => $address,
'auto_confirm' => $auto_confirm ? 1:0,
'ipn_url' => $ipn_url,
);
return $this->api_call('create_withdrawal', $req);
}
/**
* Creates a transfer from your account to a specified merchant.<br />
* @param amount The amount of the transaction (floating point to 8 decimals).
* @param currency The cryptocurrency to withdraw.
* @param merchant The merchant ID to send the coins to.
* @param auto_confirm If auto_confirm is TRUE, then the transfer will be performed without an email confirmation.
*/
public function CreateTransfer($amount, $currency, $merchant, $auto_confirm = FALSE) {
$req = array(
'amount' => $amount,
'currency' => $currency,
'merchant' => $merchant,
'auto_confirm' => $auto_confirm ? 1:0,
);
return $this->api_call('create_transfer', $req);
}
/**
* Creates a transfer from your account to a specified $PayByName tag.<br />
* @param amount The amount of the transaction (floating point to 8 decimals).
* @param currency The cryptocurrency to withdraw.
* @param pbntag The $PayByName tag to send funds to.
* @param auto_confirm If auto_confirm is TRUE, then the transfer will be performed without an email confirmation.
*/
public function SendToPayByName($amount, $currency, $pbntag, $auto_confirm = FALSE) {
$req = array(
'amount' => $amount,
'currency' => $currency,
'pbntag' => $pbntag,
'auto_confirm' => $auto_confirm ? 1:0,
);
return $this->api_call('create_transfer', $req);
}
private function is_setup() {
return (!empty($this->private_key) && !empty($this->public_key));
}
private function api_call($cmd, $req = array()) {
if (!$this->is_setup()) {
return array('error' => 'You have not called the Setup function with your private and public keys!');
}
// Set the API command and required fields
$req['version'] = 1;
$req['cmd'] = $cmd;
$req['key'] = $this->public_key;
$req['format'] = 'json'; //supported values are json and xml
// Generate the query string
$post_data = http_build_query($req, '', '&');
// Calculate the HMAC signature on the POST data
$hmac = hash_hmac('sha512', $post_data, $this->private_key);
static $ch = NULL;
if ($ch === NULL) {
$ch = curl_init('https://www.coinpayments.net/api.php');
curl_setopt($ch, CURLOPT_FAILONERROR, TRUE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
}
curl_setopt($ch, CURLOPT_HTTPHEADER, array('HMAC: '.$hmac));
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
// Execute the call and close cURL handle
$data = curl_exec($ch);
// Create cURL handle and initialize (if needed)
if ($this->ch === null) {
$this->ch = curl_init('https://www.coinpayments.net/api.php');
curl_setopt($this->ch, CURLOPT_FAILONERROR, TRUE);
curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, 0);
}
curl_setopt($this->ch, CURLOPT_HTTPHEADER, array('HMAC: '.$hmac));
curl_setopt($this->ch, CURLOPT_POSTFIELDS, $post_data);
$data = curl_exec($this->ch);
if ($data !== FALSE) {
if (PHP_INT_SIZE < 8 && version_compare(PHP_VERSION, '5.4.0') >= 0) {
// We are on 32-bit PHP, so use the bigint as string option. If you are using any API calls with Satoshis it is highly NOT recommended to use 32-bit PHP
$dec = json_decode($data, TRUE, 512, JSON_BIGINT_AS_STRING);
} else {
$dec = json_decode($data, TRUE);
}
if ($dec !== NULL && count($dec)) {
return $dec;
} else {
// If you are using PHP 5.5.0 or higher you can use json_last_error_msg() for a better error message
return array('error' => 'Unable to parse JSON result ('.json_last_error().')');
}
} else {
return array('error' => 'cURL error: '.curl_error($this->ch));
}
}
}