<?php
// LiteSpeed Web Server Status Check for Virtuozzo LLSMP
// Focused on checking if LiteSpeed is running or not

// Function to execute system commands safely
function run_command($command) {
    $output = [];
    $return_var = 0;
    exec($command . ' 2>&1', $output, $return_var);
    return ['output' => $output, 'return_var' => $return_var];
}

// Function to check if LiteSpeed is running
function check_lsws_status() {
    $result = run_command('systemctl is-active lsws');
    if ($result['return_var'] !== 0) {
        // Try alternative service names
        $alt_services = ['lshttpd', 'litespeed'];
        foreach ($alt_services as $service) {
            $alt_result = run_command("systemctl is-active $service");
            if ($alt_result['return_var'] === 0) {
                return [
                    'running' => true,
                    'status' => $alt_result['output'][0] ?? 'active',
                    'service_name' => $service
                ];
            }
        }
    }
    
    return [
        'running' => $result['return_var'] === 0,
        'status' => $result['output'][0] ?? 'unknown',
        'service_name' => 'lsws'
    ];
}

// Function to get LiteSpeed version (quick check)
function get_lsws_version() {
    $result = run_command('/var/www/bin/lshttpd -v');
    if ($result['return_var'] === 0 && !empty($result['output'])) {
        foreach ($result['output'] as $line) {
            if (preg_match('/LiteSpeed.*?(\d+\.\d+(?:\.\d+)?)/i', $line, $matches)) {
                return $matches[1];
            }
        }
    }
    return 'unknown';
}

// Function to check LiteSpeed processes
function get_lsws_processes() {
    $result = run_command('ps aux | grep -E "(lshttpd|litespeed)" | grep -v grep');
    return count($result['output']);
}

// Main execution
try {
    $lsws_status = check_lsws_status();
    $lsws_version = get_lsws_version();
    $process_count = get_lsws_processes();

    // Simple focused output for litespeed_status action
    echo json_encode([
        'status' => $lsws_status['running'] ? 'running' : 'stopped',
        'service_status' => $lsws_status['status'],
        'version' => $lsws_version,
        'process_count' => $process_count,
        'message' => $lsws_status['running'] 
            ? "LiteSpeed Web Server v{$lsws_version} is running with {$process_count} processes"
            : "LiteSpeed Web Server is not running"
    ], JSON_PRETTY_PRINT);
    
} catch (Exception $e) {
    echo json_encode([
        'status' => 'error',
        'message' => 'Failed to check LiteSpeed status: ' . $e->getMessage()
    ], JSON_PRETTY_PRINT);
}