.-.-.-.-.-

<?php

namespace App\Libraries;
/*
	PAYSTACK Library

Functions 
	-------------
	1. get_banks()
	2. create_transfer_receipt()
	3. transfer()
	4. finalize_transfer()
	5. disable_otp()
	6. disable_otp_finalize()
	7. verify_transfer()
	8. resolve_bank()
	9. curl_request()
*/

class Paystack
{
    private $secret_key, $key_id, $curl, $currency;
    protected $url;
    public $temp = array();
    function __construct()
    {
        $settings = get_settings('payment_gateways_settings', true);
        $this->key_id = (isset($settings['paystack_key'])) ? $settings['paystack_key'] : '';
        $this->secret_key = (isset($settings['paystack_secret'])) ? $settings['paystack_secret'] : '';
        $this->currency = (isset($settings['paystack_currency'])) ? $settings['paystack_currency'] : 'NGN';

$this->url = "https://api.paystack.co/";
    }
    public function get_credentials()
    {
        $this->temp['secret'] = $this->secret_key;
        $this->temp['key'] = $this->key_id;
        $this->temp['url'] = $this->url;
        $this->temp['currency'] = $this->currency;
        return $this->temp;
    }
    public function get_banks($slug = '')
    {
        $end_point = $this->url . "bank/" . $slug;
        $method = "Get";
        $banks = $this->curl_request($end_point, $method);
        return $banks;
    }

public function create_transfer_receipt($data)
    {
        $end_point = $this->url . "transferrecipient";
        $method = "post";

$transfer = $this->curl_request($end_point, $method, $data);
        return $transfer;
    }

public function transfer($data)
    {
        $end_point = $this->url . "transfer";
        $method = "post";

$transfer = $this->curl_request($end_point, $method, $data);
        return $transfer;
    }

public function finalize_transfer($data)
    {
        $end_point = $this->url . "transfer/finalize_transfer";
        $method = "post";

$transfer = $this->curl_request($end_point, $method, $data);
        return $transfer;
    }

public function list_transfers($transfer_code = '')
    {
        $end_point = $this->url . "transfer";
        $end_point .= (!empty($transfer_code)) ? "/" . $transfer_code : "";
        $method = "get";
        $transfer = $this->curl_request($end_point, $method);
        return $transfer;
    }

public function disable_otp()
    {
        $end_point = $this->url . "transfer/disable_otp";
        $method = "post";

$transfer = $this->curl_request($end_point, $method);
        return $transfer;
    }

public function disable_otp_finalize($data)
    {
        $end_point = $this->url . "transfer/disable_otp_finalize";
        $method = "post";
        $transfer = $this->curl_request($end_point, $method, $data);
        return $transfer;
    }

public function verify_transfer($reference = '')
    {
        $end_point = $this->url . "transfer/verify";
        $end_point .= (!empty($reference)) ? "/" . $reference : "";
        $method = "get";
        $transfer = $this->curl_request($end_point, $method);
        return $transfer;
    }
    public function resolve_bank($data)
    {
        $end_point = $this->url . "bank/resolve";
        $end_point .= (!empty($data)) ? "?account_number=" . $data['account_number'] . "&bank_code=" . $data['bank_code'] : "";
        $method = "get";
        $bank_details = $this->curl_request($end_point, $method);
        return $bank_details;
    }
    public function verify_transation($reference = '')
    {
        $end_point = $this->url . "transaction/verify";
        $end_point .= (!empty($reference)) ? "/" . $reference : "";
        $method = "get";
        $transfer = $this->curl_request($end_point, $method);
        return $transfer;
    }
    public function refund($txn_id, $amount)
    {
        $amount = ($amount * 100);
        $data = array(
            'transaction' => $txn_id,
            'amount' => $amount,
        );
        $url = $this->url . 'refund';
        $method = 'POST';
        $response = $this->curl_request($url, $method, $data);
        if (isset($response['http_code']) && $response['http_code'] == '200') {
            $res = json_decode($response['body'], true);
            return $res;
        } else {
            return $response;
        }
    }
    public function curl_request($end_point, $method, $data = array())
    {
        $this->curl = curl_init();
        curl_setopt_array($this->curl, array(
            CURLOPT_URL => $end_point,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CUSTOMREQUEST => strtoupper($method),
            CURLOPT_POSTFIELDS => $data,   /* example array('test_key' => 'test_value_1') */
            CURLOPT_HTTPHEADER => array(
                "Authorization: Bearer " . $this->secret_key
            ),
        ));
        $response = curl_exec($this->curl);
        curl_close($this->curl);
        return $response;
    }
}

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