whmcsBuilder/controllers/GetSSLDaysController.php

<?php

namespace application\controllers;

class GetSSLDaysController {
    public static function getSSLDays($data): void {
        $domain = $data['domain'] ?? '';
        if (empty($domain)) {
            http_response_code(400);
            echo json_encode(['error' => 'Missing required parameter: domain']);
            return;
        }

        exec("sudo certbot certificates --cert-name $domain | grep 'Expiry' | sed 's/days)//g' | sed 's/[[:space:]]//g' | cut -d:  -f2,f3", $phpOutput, $phpReturnCode);
        $sslData = implode("\n",$phpOutput);
        /*
        $certFile = "/etc/letsencrypt/live/$domain/fullchain.pem";
        if (!file_exists($certFile)) {
            error_log("certfile: " . $certFile);
            http_response_code(404);
            echo json_encode(['error' => 'SSL certificate not found']);
            return;
        }
            [ssl_expiry] =>     Expiry Date: 2025-08-05 08:21:58+00:00 (VALID: 86 days)

        $certData = openssl_x509_parse(file_get_contents($certFile));
        if (!$certData || !isset($certData['validTo_time_t'])) {
            http_response_code(500);
            echo json_encode(['error' => 'Failed to parse SSL certificate']);
            return;
        }

        $expiryTimestamp = $certData['validTo_time_t'];
        $expiryDate = date('Y-m-d', $expiryTimestamp);
        $daysRemaining = ceil(($expiryTimestamp - time()) / 86400);
        */

        echo json_encode([
	        'ssl_expiry' => $sslData,
	        'ssl_remaining' => $phpOutput
	    ]);

    }
}