Add start-service.bat script for Resource Monitor Service v2.0

- Introduced a batch script to simplify the startup process for the Resource Monitor Service.
- Included checks for .NET 9.0 Runtime installation.
- Added build and run commands for the service with appropriate error handling.
- Provided user instructions and API documentation links in the script output.

Services/SystemInfoService.cs

@@ -0,0 +1,217 @@
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using ResourceMonitorService.Configuration;
+using ResourceMonitorService.Models;
+using System.Diagnostics;
+using System.Management;
+
+namespace ResourceMonitorService.Services
+{
+    public interface ISystemInfoService
+    {
+        Task<SystemInfo> GetSystemInfoAsync();
+        Task<bool> IsVirtualMachineAsync();
+        Task<string> GetHypervisorVendorAsync();
+        Task<DateTime> GetBootTimeAsync();
+        Task<string> GetCpuNameAsync();
+    }
+
+    public class SystemInfoService : ISystemInfoService
+    {
+        private readonly ILogger<SystemInfoService> _logger;
+        private readonly MonitoringSettings _settings;
+        private SystemInfo? _cachedSystemInfo;
+        private DateTime _lastCacheUpdate = DateTime.MinValue;
+        private readonly TimeSpan _cacheExpiration = TimeSpan.FromMinutes(5);
+
+        public SystemInfoService(ILogger<SystemInfoService> logger, IOptions<MonitoringSettings> settings)
+        {
+            _logger = logger;
+            _settings = settings.Value;
+        }
+
+        public async Task<SystemInfo> GetSystemInfoAsync()
+        {
+            if (_cachedSystemInfo != null && DateTime.Now - _lastCacheUpdate < _cacheExpiration)
+            {
+                _cachedSystemInfo.Uptime = DateTime.Now - _cachedSystemInfo.BootTime;
+                return _cachedSystemInfo;
+            }
+
+            try
+            {
+                var systemInfo = new SystemInfo
+                {
+                    MachineName = Environment.MachineName,
+                    OSVersion = System.Runtime.InteropServices.RuntimeInformation.OSDescription,
+                    OSArchitecture = System.Runtime.InteropServices.RuntimeInformation.OSArchitecture.ToString(),
+                    ProcessorCount = Environment.ProcessorCount,
+                    TotalPhysicalMemory = await GetTotalPhysicalMemoryAsync(),
+                    CPUName = await GetCpuNameAsync(),
+                    BootTime = await GetBootTimeAsync(),
+                    Domain = Environment.UserDomainName,
+                    IsVirtualMachine = await IsVirtualMachineAsync(),
+                    HypervisorVendor = await GetHypervisorVendorAsync()
+                };
+
+                systemInfo.Uptime = DateTime.Now - systemInfo.BootTime;
+
+                _cachedSystemInfo = systemInfo;
+                _lastCacheUpdate = DateTime.Now;
+
+                return systemInfo;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting system information");
+                throw;
+            }
+        }
+
+        public async Task<bool> IsVirtualMachineAsync()
+        {
+            try
+            {
+                return await Task.Run(() =>
+                {
+                    // Check for common VM indicators
+                    var queries = new[]
+                    {
+                        "SELECT * FROM Win32_ComputerSystem WHERE Manufacturer LIKE '%VMware%' OR Manufacturer LIKE '%VirtualBox%' OR Manufacturer LIKE '%Microsoft Corporation%' OR Model LIKE '%Virtual%'",
+                        "SELECT * FROM Win32_BIOS WHERE SerialNumber LIKE '%VMware%' OR SerialNumber LIKE '%VirtualBox%' OR Version LIKE '%VBOX%'",
+                        "SELECT * FROM Win32_SystemEnclosure WHERE Manufacturer LIKE '%VMware%' OR Manufacturer LIKE '%VirtualBox%'"
+                    };
+
+                    foreach (var query in queries)
+                    {
+#pragma warning disable CA1416 // Validate platform compatibility
+                        using var searcher = new ManagementObjectSearcher(query);
+                        using var collection = searcher.Get();
+                        if (collection.Count > 0)
+                            return true;
+#pragma warning restore CA1416 // Validate platform compatibility
+                    }
+
+                    return false;
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Could not determine if running in virtual machine");
+                return false;
+            }
+        }
+
+        public async Task<string> GetHypervisorVendorAsync()
+        {
+            try
+            {
+                return await Task.Run(() =>
+                {
+#pragma warning disable CA1416 // Validate platform compatibility
+                    using var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_ComputerSystem");
+                    using var collection = searcher.Get();
+                    foreach (ManagementObject obj in collection)
+                    {
+                        var manufacturer = obj["Manufacturer"]?.ToString() ?? "";
+                        var model = obj["Model"]?.ToString() ?? "";
+
+                        if (manufacturer.Contains("VMware"))
+                            return "VMware";
+                        if (manufacturer.Contains("Microsoft Corporation") && model.Contains("Virtual"))
+                            return "Hyper-V";
+                        if (manufacturer.Contains("QEMU"))
+                            return "QEMU/KVM";
+                        if (manufacturer.Contains("VirtualBox"))
+                            return "VirtualBox";
+                        if (manufacturer.Contains("Xen"))
+                            return "Xen";
+                    }
+#pragma warning restore CA1416 // Validate platform compatibility
+                    return "Unknown";
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Could not determine hypervisor vendor");
+                return "Unknown";
+            }
+        }
+
+        public async Task<DateTime> GetBootTimeAsync()
+        {
+            try
+            {
+                return await Task.Run(() =>
+                {
+#pragma warning disable CA1416 // Validate platform compatibility
+                    using var searcher = new ManagementObjectSearcher("SELECT LastBootUpTime FROM Win32_OperatingSystem");
+                    using var collection = searcher.Get();
+                    foreach (ManagementObject obj in collection)
+                    {
+                        var bootTime = obj["LastBootUpTime"]?.ToString();
+                        if (!string.IsNullOrEmpty(bootTime))
+                        {
+                            return ManagementDateTimeConverter.ToDateTime(bootTime);
+                        }
+                    }
+#pragma warning restore CA1416 // Validate platform compatibility
+                    return DateTime.Now.AddMilliseconds(-Environment.TickCount64);
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Could not get boot time from WMI, using tick count");
+                return DateTime.Now.AddMilliseconds(-Environment.TickCount64);
+            }
+        }
+
+        public async Task<string> GetCpuNameAsync()
+        {
+            try
+            {
+                return await Task.Run(() =>
+                {
+#pragma warning disable CA1416 // Validate platform compatibility
+                    using var searcher = new ManagementObjectSearcher("SELECT Name FROM Win32_Processor");
+                    using var collection = searcher.Get();
+                    foreach (ManagementObject obj in collection)
+                    {
+                        return obj["Name"]?.ToString()?.Trim() ?? "Unknown CPU";
+                    }
+#pragma warning restore CA1416 // Validate platform compatibility
+                    return "Unknown CPU";
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Could not get CPU name");
+                return "Unknown CPU";
+            }
+        }
+
+        private async Task<ulong> GetTotalPhysicalMemoryAsync()
+        {
+            try
+            {
+                return await Task.Run(() =>
+                {
+#pragma warning disable CA1416 // Validate platform compatibility
+                    using var searcher = new ManagementObjectSearcher("SELECT TotalPhysicalMemory FROM Win32_ComputerSystem");
+                    using var collection = searcher.Get();
+                    foreach (ManagementObject obj in collection)
+                    {
+                        return (ulong)obj["TotalPhysicalMemory"];
+                    }
+#pragma warning restore CA1416 // Validate platform compatibility
+                    return (ulong)0;
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Could not get total physical memory");
+                return 0;
+            }
+        }
+    }
+}