✏️ Editing: Paytm.php

<?php

if (!defined('BASEPATH'))
    exit('No direct script access allowed');

class Paytm extends OnlineAdmission_Controller
{

public $pay_method = "";
    public $amount = 0;

function __construct() {
        parent::__construct();
        $this->pay_method = $this->paymentsetting_model->getActiveMethod();
        $this->setting = $this->setting_model->getSetting();
        $this->amount = $this->setting->online_admission_amount;
        $this->load->library('paytm_lib');
        $this->load->library('mailsmsconf');
        $this->load->model('onlinestudent_model');
    }

public function index() {
        $reference = $this->session->userdata('reference');
        $params = $this->session->userdata('params');
        $data = array();
        $data['params'] = $params;
        $data['setting'] = $this->setting;
        $data['api_error'] = array();
        $amount= $this->amount;
        $data['amount'] = $amount;
        $paytmParams = array();
        $ORDER_ID = time();
        $CUST_ID = time();

$paytmParams = array(
            "MID" => $this->pay_method->api_publishable_key,
            "WEBSITE" => $this->pay_method->paytm_website,
            "INDUSTRY_TYPE_ID" => $this->pay_method->paytm_industrytype,
            "CHANNEL_ID" => "WEB",
            "ORDER_ID" => $ORDER_ID,
            "CUST_ID" => $reference,
            "TXN_AMOUNT" => $data['amount'],
            "CALLBACK_URL" => base_url() . "onlineadmission/paytm/complete",
        );

$paytmChecksum = $this->paytm_lib->getChecksumFromArray($paytmParams, $this->pay_method->api_secret_key);
        $paytmParams["CHECKSUMHASH"] = $paytmChecksum;

$transactionURL = 'https://securegw.paytm.in/order/process';
        $data['paytmParams'] = $paytmParams;
        $data['transactionURL'] = $transactionURL;
        $this->load->view("onlineadmission/paytm/index", $data);
    }

public function complete()
    {
        $reference  = $this->session->userdata('reference');
       $paytmChecksum = "";
        $paramList = array();
        $isValidChecksum = "FALSE";
        $paramList = $_POST;
        $paytmChecksum = isset($_POST["CHECKSUMHASH"]) ? $_POST["CHECKSUMHASH"] : "";
        $isValidChecksum = $this->paytm_lib->verifychecksum_e($paramList, $this->pay_method->api_secret_key, $paytmChecksum);
         $online_data = $this->onlinestudent_model->getAdmissionData($reference);
        
        if ($isValidChecksum == "TRUE") {

if ($_POST["STATUS"] == "TXN_SUCCESS") {
            
           
            $apply_date=date("Y-m-d H:i:s");
            $date         = date($this->customlib->getSchoolDateFormat(), $this->customlib->dateyyyymmddTodateformat($apply_date));
            $amount = $this->session->userdata('payment_amount');
            $transactionid=$_POST['TXNID'];
            $gateway_response['admission_id']   = $reference; 
            $gateway_response['paid_amount']    = $this->amount;
            $gateway_response['transaction_id'] = $transactionid;
            $gateway_response['payment_mode']   = 'paytm';
            $gateway_response['payment_type']   = 'online';
            $gateway_response['note']           = "Payment deposit through Paytm TXN ID: " . $transactionid;
            $gateway_response['date']           = date("Y-m-d H:i:s");
            $return_detail                      = $this->onlinestudent_model->paymentSuccess($gateway_response);
            $sender_details = array('firstname' => $online_data->firstname, 'lastname' => $online_data->lastname, 'email' => $online_data->email,'date'=>$date,'reference_no'=>$online_data->reference_no,'mobileno'=>$online_data->mobileno,'paid_amount'=>$amount);
            $this->mailsmsconf->mailsms('online_admission_fees_submission', $sender_details);
            redirect(base_url("onlineadmission/checkout/successinvoice/".$online_data->reference_no));
              
            } else {
                redirect(base_url("onlineadmission/checkout/paymentfailed/".$online_data->reference_no));
            }
        } else {
            redirect(base_url("onlineadmission/checkout/paymentfailed/".$online_data->reference_no));
        }

}

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