
<?php
header('Content-Type: application/json');

class EmailValidator {
    public function validate($email) {
        $result = ['email' => $email, 'valid' => false, 'reason' => '', 'mx' => [], 'disposable' => false];
        
        // Format check
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $result['reason'] = 'Invalid format';
            return $result;
        }
        
        $domain = substr($email, strpos($email, '@') + 1);
        
        // MX check
        if (!getmxrr($domain, $mxhosts, $weights)) {
            $result['reason'] = 'No MX records';
            return $result;
        }
        $result['mx'] = $mxhosts;
        
        // Disposable check
        $disposable = ['tempmail.com', 'guerrillamail.com', 'mailinator.com', '10minutemail.com', 'throwaway.email', 'temp-mail.org', 'fakeinbox.com'];
        if (in_array($domain, $disposable)) {
            $result['disposable'] = true;
            $result['reason'] = 'Disposable email';
            return $result;
        }
        
        $result['valid'] = true;
        $result['reason'] = 'Valid';
        return $result;
    }
    
    public function bulkValidate($emails) {
        $results = [];
        foreach ($emails as $email) {
            $results[] = $this->validate(trim($email));
        }
        return $results;
    }
}

$action = $_POST['action'] ?? $_GET['action'] ?? '';
$validator = new EmailValidator();

switch ($action) {
    case 'validate':
        echo json_encode($validator->validate($_POST['email'] ?? $_GET['email']));
        break;
    case 'bulk':
        $emails = isset($_POST['emails']) ? (is_array($_POST['emails']) ? $_POST['emails'] : explode("\n", $_POST['emails'])) : [];
        echo json_encode(['results' => $validator->bulkValidate($emails)]);
        break;
    default:
        echo json_encode(['actions' => ['validate', 'bulk'], 'example' => '?action=validate&email=test@example.com']);
}