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

$action = $argv[1] ?? 'status';
$value = $argv[2] ?? '';

// 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 restart LiteSpeed Web Server
function restart_lsws() {
    $result = run_command('systemctl restart lsws');
    return $result['return_var'] === 0;
}

// Function to reload LiteSpeed Web Server
function reload_lsws() {
    $result = run_command('systemctl reload lsws');
    return $result['return_var'] === 0;
}

// Function to stop LiteSpeed Web Server
function stop_lsws() {
    $result = run_command('systemctl stop lsws');
    return $result['return_var'] === 0;
}

// Function to start LiteSpeed Web Server
function start_lsws() {
    $result = run_command('systemctl start lsws');
    return $result['return_var'] === 0;
}

// Function to check LiteSpeed status
function get_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() {
    $result = run_command('/var/www/bin/lshttpd -v');
    if ($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 purge cache via admin console (if configured)
function purge_cache() {
    // For Virtuozzo LLSMP, we'll restart the server as a basic cache clear
    return restart_lsws();
}

// Function to enable/disable cache in httpd_config.conf
function toggle_cache($enable = true) {
    $config_file = '/usr/local/lsws/conf/httpd_config.conf';
    if (!file_exists($config_file) || !is_writable($config_file)) {
        return false;
    }
    
    // This is a simplified example - actual implementation would need
    // to parse and modify the LiteSpeed configuration properly
    $backup_file = $config_file . '.backup.' . date('YmdHis');
    copy($config_file, $backup_file);
    
    // For demonstration - actual cache configuration would be more complex
    return reload_lsws();
}

switch ($action) {
    case 'start':
        if (start_lsws()) {
            echo json_encode(['status' => 'success', 'message' => 'LiteSpeed Web Server started']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to start LiteSpeed Web Server']);
        }
        break;

    case 'stop':
        if (stop_lsws()) {
            echo json_encode(['status' => 'success', 'message' => 'LiteSpeed Web Server stopped']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to stop LiteSpeed Web Server']);
        }
        break;

    case 'restart':
        if (restart_lsws()) {
            echo json_encode(['status' => 'success', 'message' => 'LiteSpeed Web Server restarted']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to restart LiteSpeed Web Server']);
        }
        break;

    case 'reload':
        if (reload_lsws()) {
            echo json_encode(['status' => 'success', 'message' => 'LiteSpeed Web Server configuration reloaded']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to reload LiteSpeed Web Server']);
        }
        break;

    case 'status':
        $status = get_lsws_status();
        echo json_encode([
            'status' => 'success',
            'server' => [
                'running' => $status['running'],
                'service_status' => $status['status'],
                'version' => get_lsws_version()
            ]
        ]);
        break;

    case 'purge':
        if (purge_cache()) {
            echo json_encode(['status' => 'success', 'message' => 'Cache purged (server restarted)']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to purge cache']);
        }
        break;

    case 'enable-cache':
        if (toggle_cache(true)) {
            echo json_encode(['status' => 'success', 'message' => 'Cache enabled and server reloaded']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to enable cache']);
        }
        break;

    case 'disable-cache':
        if (toggle_cache(false)) {
            echo json_encode(['status' => 'success', 'message' => 'Cache disabled and server reloaded']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Failed to disable cache']);
        }
        break;

    case 'set-ttl':
        if (empty($value)) {
            echo json_encode(['status' => 'error', 'message' => 'TTL value required']);
            exit(1);
        }
        // For Virtuozzo LLSMP, we would need to modify the server configuration
        // This is a placeholder - actual implementation depends on how Virtuozzo manages LiteSpeed config
        echo json_encode(['status' => 'success', 'message' => "TTL would be set to {$value} seconds (placeholder - needs Virtuozzo-specific implementation)"]);
        break;

    case 'set-exclusions':
        if (empty($value)) {
            echo json_encode(['status' => 'error', 'message' => 'Exclusion paths required']);
            exit(1);
        }
        // For Virtuozzo LLSMP, we would need to modify the server configuration
        // This is a placeholder - actual implementation depends on how Virtuozzo manages LiteSpeed config
        echo json_encode(['status' => 'success', 'message' => "Cache exclusions would be set to: {$value} (placeholder - needs Virtuozzo-specific implementation)"]);
        break;

    case 'version':
        $version = get_lsws_version();
        echo json_encode(['status' => 'success', 'version' => $version, 'message' => "LiteSpeed Web Server version {$version}"]);
        break;

    default:
        echo json_encode([
            'status' => 'error', 
            'message' => 'Invalid action. Available actions: start, stop, restart, reload, status, purge, enable-cache, disable-cache, set-ttl, set-exclusions, version'
        ]);
        exit(1);
}