<?php

if (!defined("WHMCS")) {
    die("This file cannot be accessed directly");
}

function my_log_errors ($message, $mail=false, $printr=false) {
    if ($printr) {
        $message = print_r($message,true);
    }
    if ($mail) {
        mail("my@gmail.com", "Log from card gateway", $message);
    }
    error_log(date('d/m/Y H:i:s', time()) . ' - ' . $message.PHP_EOL, 3, "/var/www/user/logs/" . date('d-M-Y') . "-card-payment-errors.log");

}

function wph_remoteinputgateway_MetaData()
{
    return [
        'DisplayName' => 'Sample Remote Input Gateway Module',
        'APIVersion' => '1.1', // Use API Version 1.1
    ];
}

function wph_remoteinputgateway_config()
{
    return [
        // the friendly display name for a payment gateway should be
        // defined here for backwards compatibility
        'FriendlyName' => [
            'Type' => 'System',
            'Value' => 'Sample Remote Input Gateway Module',
        ],
        // a text field type allows for single line text input
        'apiUsername' => [
            'FriendlyName' => 'API Username',
            'Type' => 'text',
            'Size' => '25',
            'Default' => '',
            'Description' => 'Enter your API Username here',
        ],
        // a password field type allows for masked text input
        'apiPassword' => [
            'FriendlyName' => 'API Password',
            'Type' => 'text',
            'Size' => '25',
            'Default' => '',
            'Description' => 'Enter your API Password here',
        ],
        // a password field type allows for masked text input
        'apiDomain' => [
            'FriendlyName' => 'API Domain',
            'Type' => 'text',
            'Size' => '25',
            'Default' => '',
            'Description' => 'Enter your API Domain here',
        ],
        // the yesno field type displays a single checkbox option
        'testMode' => [
            'FriendlyName' => 'Test Mode',
            'Type' => 'yesno',
            'Description' => 'Tick to enable test mode',
        ],
    ];
}



function GetApi($url, $param){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($param));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}
/**
 * No local credit card input.
 */
function wph_remoteinputgateway_nolocalcc() {}

/**
 * Capture payment.
 *
 * Called when a payment is requested to be processed and captured.
 *
 * The CVV number parameter will only be present for card holder present
 * transactions and when made against an existing stored payment token
 * where new card data has not been entered.
 *
 * @param array $params Payment Gateway Module Parameters
 *
 * @see https://developers.whmcs.com/payment-gateways/remote-input-gateway/
 *
 * @return array
 */
function wph_remoteinputgateway_capture($params)
{
    my_log_errors('Capture start');
    $remoteGatewayToken = $params['gatewayid'];
    $cardCvv = $params['cccvv']; // Card Verification Value
	
    // Gateway Configuration Parameters
    $merchantAccount = $params['apiUsername'];
    $secretKey = $params['apiPassword'];
    $merchantDomainName = $params['apiDomain'];

    // Client Parameters
    $clientId = $params['clientdetails']['id'];
    $email = $params['clientdetails']['email'];
    $phone = $params['clientdetails']['phonenumber'];

    // Invoice Parameters
    $invoice_id = $params['invoiceid'];
    $merchantTransactionType = 'SALE';
    $description = "Invoice#$invoice_id";
    $amount = (string)$params['amount'];

    // System Parameters
    $systemUrl = $params['systemurl'];
    $returnUrl = $params['returnurl'];
    $langPayNow = $params['langpaynow'];
    $moduleName = $params['paymentmethod'];
    $url = 'https://api.pay.com/api';

    //Post fields
    

    $postFields = [
        'token' => $remoteGatewayToken,
        'cvv' => $cardCvv,
        'invoice_number' => $invoice_id,
        'amount' => $amount,
        'currency' => 'UAH',
    ];
	
    
    // A token is required for a remote input gateway capture attempt
    if (!$remoteGatewayToken) {
        my_log_errors('No Remote Token');
        return [
            'status' => 'declined',
            'decline_message' => 'No Remote Token',
        ];
    } else {
        my_log_errors('Remote Token ok');
    }

    /************************************* /API *********************************************************/
    // Perform API call to initiate capture.
    my_log_errors('Api call start');
	
    $json = GetApi($url,$postfields);
	
    $request = json_decode($json);

    $orderReference = $request->orderReference;
    $invoice_id = $request->invoice_id;
    $customer_id = $request->customer_id;
    $transaction_id = $request->orderReference;
    $payment_amount = $request->amount;
    $payment_fee = $request->fee;

    $sign_string = "$request->merchantAccount;.......$request->reasonCode";
    $sign = hash_hmac('md5', $sign_string, $secretKey);
	
    $success = false;
	
    $response = [
        'success' => false,
        'transaction_id' => '',
        'fee' => 0,
        'token' => '',
        'decline_reason' => 'Unknown Error'
    ];

    if ($request->merchantSignature == $sign) {
        $success = true;
        $response_status = 'accept';
        $action = 'payment';
    } else {
        $response_status = 'Hash Verification Failure';
        $response = [
            'success' => false,
            'transaction_id' => $transaction_id,
            'fee' => $payment_fee,
            'token' => $remoteGatewayToken,
            'decline_reason' => $response_status
        ];
    }

    if ($request->transactionStatus != 'Approved' && $request->reasonCode != 1100)
    {
        $success = false;
        $transaction_status = $request->reason;

        $response = [
            'success' => false,
            'transaction_id' => $transaction_id,
            'fee' => $payment_fee,
            'token' => $remoteGatewayToken,
            'decline_reason' => $transaction_status
        ];
    }

    if ($success) {

        $invoice_id = checkCbInvoiceID($invoice_id, $gatewayParams['name']);
        checkCbTransID($transaction_id);
        logTransaction($gatewayParams['name'], (array)$request, $transaction_status);

        $invoice_res = addInvoicePayment(
            $invoice_id,
            $transaction_id,
            $payment_amount,
            $payment_fee,
            $gatewayModuleName
        );
    }
    if ($invoice_res == 'success ') {
        $response = [
            'success' => true,
            'transaction_id' => $transaction_id,
            'fee' => $payment_fee,
            'token' => $remoteGatewayToken,
        ];
    } else {
        $response = [
            'success' => false,
            'transaction_id' => $transaction_id,
            'fee' => $payment_fee,
            'token' => $remoteGatewayToken,
            'decline_reason' => 'addInvoicePayment returned error',
        ];
    }

    /************************************* /API *********************************************************/

    if ($response['success']) {
        return [
            // 'success' if successful, otherwise 'declined', 'error' for failure
            'status' => 'success',
            // The unique transaction id for the payment
            'transid' => $response['transaction_id'],
            // Optional fee amount for the transaction
            'fee' => $response['fee'],
            // Return only if the token has updated or changed
            'gatewayid' => $response['token'],
            // Data to be recorded in the gateway log - can be a string or array
            'rawdata' => $response,
        ];
    }

    return [
        // 'success' if successful, otherwise 'declined', 'error' for failure
        'status' => 'declined',
        // For declines, a decline reason can optionally be returned
        'declinereason' => $response['decline_reason'],
        // Data to be recorded in the gateway log - can be a string or array
        'rawdata' => $response,
    ];
}

/**
 * Remote input.
 * @return array
 */
function wph_remoteinputgateway_remoteinput($params)
{
    
    $postFields = [
        'token' => $remoteGatewayToken,
        'cvv' => $cardCvv,
        'invoice_number' => $invoice_id,
        'amount' => $amount,
        'currency' => 'UAH',
    ];

    //$htmlOutput = '<form method="post" action="' . $url . '">';
    foreach ($postfields as $k => $v) {
        $htmlOutput .= '<input type="hidden" name="' . $k . '" value="' . $v . '" />';
    }
    
    // This is a working example which posts to the file: demo/remote-iframe-demo.php
    return '<form method="post" action="' . $url . '">
                ' . $htmlOutput . '
                <noscript>
                    <input type="submit" value="Click here to continue &raquo;">
                </noscript>
            </form>';
}

/**
 * Remote update.
 * @return array
 */
function wph_remoteinputgateway_remoteupdate($params)
{
    return <<<HTML
<div class="alert alert-info text-center">
    Updating your card is not possible. Please create a new Pay Method to make changes.
</div>
HTML;
}

/**
 * Admin status message.
 *
 * Called when an invoice is viewed in the admin area.
 *
 * @param array $params Payment Gateway Module Parameters.
 *
 * @return array
 */
function wph_remoteinputgateway_adminstatusmsg($params)
{
    // Gateway Configuration Parameters
    $apiUsername = $params['apiUsername'];
    $apiPassword = $params['apiPassword'];
    $testMode = $params['testMode'];

    // Invoice Parameters
    $remoteGatewayToken = $params['gatewayid'];

    if ($remoteGatewayToken) {
        return [
            'type' => 'info',
            'title' => 'Token Gateway Profile',
            'msg' => 'This customer has a Remote Token storing their card'
                . ' details for automated recurring billing with ID ' . $remoteGatewayToken,
        ];
    }
}