<?php
// LiteSpeed Web Server Status Check for LLSMP
// No WordPress or WP-CLI required

// 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');
    return [
        'running' => $result['return_var'] === 0,
        'status' => $result['output'][0] ?? 'unknown'
    ];
}

// Function to get LiteSpeed version
function get_lsws_version() {
    $result = run_command('/usr/local/lsws/bin/lshttpd -v');
    if ($result['return_var'] === 0 && !empty($result['output'])) {
        foreach ($result['output'] as $line) {
            if (strpos($line, 'LiteSpeed') !== false) {
                return trim($line);
            }
        }
    }
    return 'unknown';
}

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

// Function to check LiteSpeed configuration
function check_lsws_config() {
    $config_file = '/usr/local/lsws/conf/httpd_config.conf';
    if (file_exists($config_file)) {
        return [
            'config_exists' => true,
            'config_readable' => is_readable($config_file),
            'last_modified' => date('Y-m-d H:i:s', filemtime($config_file))
        ];
    }
    return ['config_exists' => false];
}

// Function to check LiteSpeed logs
function check_lsws_logs() {
    $log_dir = '/usr/local/lsws/logs';
    $error_log = $log_dir . '/error.log';
    $access_log = $log_dir . '/access.log';
    
    return [
        'log_dir_exists' => is_dir($log_dir),
        'error_log' => file_exists($error_log) ? [
            'exists' => true,
            'size' => filesize($error_log),
            'last_modified' => date('Y-m-d H:i:s', filemtime($error_log))
        ] : ['exists' => false],
        'access_log' => file_exists($access_log) ? [
            'exists' => true,
            'size' => filesize($access_log),
            'last_modified' => date('Y-m-d H:i:s', filemtime($access_log))
        ] : ['exists' => false]
    ];
}

// Function to check listening ports
function check_lsws_ports() {
    $result = run_command('netstat -tlnp | grep lshttpd');
    $ports = [];
    foreach ($result['output'] as $line) {
        if (preg_match('/:(\\d+)\\s/', $line, $matches)) {
            $ports[] = $matches[1];
        }
    }
    return array_unique($ports);
}

// Function to get basic system info
function get_system_info() {
    return [
        'php_version' => phpversion(),
        'server_time' => date('Y-m-d H:i:s'),
        'uptime' => trim(file_get_contents('/proc/uptime')),
        'load_average' => sys_getloadavg()
    ];
}

// Main execution
$lsws_status = check_lsws_status();
$lsws_version = get_lsws_version();
$lsws_processes = get_lsws_processes();
$lsws_config = check_lsws_config();
$lsws_logs = check_lsws_logs();
$lsws_ports = check_lsws_ports();
$system_info = get_system_info();

// Output comprehensive LiteSpeed status
echo json_encode([
    'status' => 'success',
    'server' => [
        'name' => 'LiteSpeed Web Server',
        'version' => $lsws_version,
        'running' => $lsws_status['running'],
        'service_status' => $lsws_status['status'],
        'process_count' => $lsws_processes['count'],
        'listening_ports' => $lsws_ports
    ],
    'configuration' => $lsws_config,
    'logs' => $lsws_logs,
    'system' => $system_info
], JSON_PRETTY_PRINT);