starnerz / laravel-daraja

src/Requests/STK.php

<?php

namespace Starnerz\LaravelDaraja\Requests;

use Starnerz\LaravelDaraja\MpesaApiClient;

class STK extends MpesaApiClient
{
    /**
     * Safaricom Lipa Na Mpesa Online API end point.
     *
     * @var string
     */
    protected $stkEndpoint = 'mpesa/stkpush/v1/processrequest';

    /**
     * Safaricom Lipa Na Mpesa Online API transaction status
     * end point.
     *
     * @var string
     */
    protected $statusEndPoint = 'mpesa/stkpushquery/v1/query';

    /**
     * Business short code that will receive money.
     *
     * @var string
     */
    protected $shortCode;

    /**
     * The passkey associated with Lipa Na Mpesa Online Transactions
     * for the short code.
     *
     * @var string
     */
    protected $passKey;

    /**
     * The url that will handle the result of the transaction from
     * the Saaricom Lipa Na Mpesa Online API.
     *
     * @var string
     */
    protected $callbackURL;

    /**
     * STK constructor.
     */
    public function __construct()
    {
        parent::__construct();
        $this->shortCode = config('laravel-daraja.stk_push.short_code');
        $this->passKey = config('laravel-daraja.stk_push.pass_key');
        $this->callbackURL = $this->setUrl(config('laravel-daraja.stk_push.callback_url'));
    }

    /**
     * Set the business short code that will be used for the transaction.
     *
     * @param  string  $code
     */
    public function setShortCode($code)
    {
        $this->shortCode = $code;
    }

    /**
     * Set the pass key associated with the business short code set.
     *
     * @param  string  $key
     */
    public function setPassKey($key)
    {
        $this->passKey = $key;
    }

    /**
     * Set the URL which will hadle the result from the MPESA API.
     *
     * @param  string  $url
     */
    public function setCallbackURL($url)
    {
        $this->callbackURL = $url;
    }

    /**
     * Generate the password to be used for the transaction.
     *
     * @param  string  $shortCode
     * @param  string  $passKey
     * @param  string  $timestamp
     * @return string
     */
    protected function generatePassword($shortCode, $passKey, $timestamp)
    {
        return base64_encode($shortCode.$passKey.$timestamp);
    }

    /**
     * Initiate an STK push to a Safaricom mobile number.
     *
     * @param  string  $mobileNo
     * @param  string  $amount
     * @param  string  $description
     * @param  string  $accountReference
     * @param  null|string  $shortCode  short code receiving the money
     * @return mixed
     */
    public function push($mobileNo, $amount, $description, $accountReference, $shortCode = null, $transactionType)
    {
        $timestamp = date('YmdHis');

        $parameters = [
            'BusinessShortCode' => $this->shortCode,
            'Password' => $this->generatePassword($this->shortCode, $this->passKey, $timestamp),
            'Timestamp' => $timestamp,
            'TransactionType' => $transactionType,
            'Amount' => $amount,
            'PartyA' => $mobileNo,
            'PartyB' => is_null($shortCode) ? $this->shortCode : $shortCode,
            'PhoneNumber' => $mobileNo,
            'CallBackURL' => $this->callbackURL,
            'AccountReference' => $accountReference,
            'TransactionDesc' => str_limit($description, 20, ''),

The function str_limit was not found. Maybe you did not declare it correctly or list all dependencies?

        ];

        return $this->call($this->stkEndpoint, ['json' => $parameters]);
    }

    /**
     * Check the status of a Lipa Na Mpesa Online Transaction.
     *
     * @param  string  $checkoutRequestId
     * @param  null|string  $shortCode
     * @return mixed
     */
    public function transactionStatus($checkoutRequestId, $shortCode = null)
    {
        $timestamp = date('YmdHis');

        $parameters = [
            'BusinessShortCode' => is_null($shortCode) ? $this->shortCode : $shortCode,
            'Password' => $this->generatePassword($this->shortCode, $this->passKey, $timestamp),
            'Timestamp' => $timestamp,
            'CheckoutRequestID' => $checkoutRequestId,
        ];

        return $this->call($this->statusEndPoint, ['json' => $parameters]);
    }
}