feat(#5): Auto-check .Net SDK installation

BannerlordModEditor.Common.Tests/Services/SdkCheckerServiceTests.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Threading.Tasks;
+using Xunit;
+using BannerlordModEditor.Common.Services;
+
+namespace BannerlordModEditor.Common.Tests.Services
+{
+    public class SdkCheckerServiceTests
+    {
+        private readonly SdkCheckerService _service;
+
+        public SdkCheckerServiceTests()
+        {
+            _service = new SdkCheckerService();
+        }
+
+        [Fact]
+        public void GetDownloadUrl_ReturnsValidUrl()
+        {
+            var url = _service.GetDownloadUrl();
+            Assert.NotNull(url);
+            Assert.Contains("dotnet", url);
+        }
+
+        [Fact]
+        public async Task CheckSdkAsync_ReturnsValidInfo()
+        {
+            var info = await _service.CheckSdkAsync();
+
+            Assert.NotNull(info);
+            Assert.NotNull(info.RecommendedVersion);
+            Assert.NotNull(info.DownloadUrl);
+        }
+
+        [Fact]
+        public void CheckSdk_ReturnsValidInfo()
+        {
+            var info = _service.CheckSdk();
+
+            Assert.NotNull(info);
+            Assert.NotNull(info.RecommendedVersion);
+            Assert.NotNull(info.DownloadUrl);
+        }
+
+        [Fact]
+        public void IsSdkInstalled_ReturnsBoolean()
+        {
+            var result = _service.IsSdkInstalled();
+            Assert.IsType<bool>(result);
+        }
+
+        [Fact]
+        public void GetSdkVersion_ReturnsStringOrNull()
+        {
+            var result = _service.GetSdkVersion();
+            Assert.True(result == null || !string.IsNullOrEmpty(result));
+        }
+
+        [Fact]
+        public void GetInstalledVersions_ReturnsList()
+        {
+            var versions = _service.GetInstalledVersions();
+            Assert.NotNull(versions);
+        }
+    }
+}

BannerlordModEditor.Common/Services/SdkCheckerService.cs

@@ -0,0 +1,202 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace BannerlordModEditor.Common.Services
+{
+    public class SdkInfo
+    {
+        public bool IsInstalled { get; set; }
+        public string? Version { get; set; }
+        public string? Path { get; set; }
+        public List<string> InstalledVersions { get; set; } = new();
+        public string? RecommendedVersion { get; set; }
+        public string? DownloadUrl { get; set; }
+    }
+
+    public interface ISdkCheckerService
+    {
+        Task<SdkInfo> CheckSdkAsync();
+        SdkInfo CheckSdk();
+        bool IsSdkInstalled();
+        string? GetSdkVersion();
+        List<string> GetInstalledVersions();
+        string GetDownloadUrl();
+    }
+
+    public class SdkCheckerService : ISdkCheckerService
+    {
+        private const string RecommendedSdkVersion = "9.0.100";
+        private const string DownloadUrlBase = "https://dotnet.microsoft.com/download/dotnet/9.0";
+
+        public async Task<SdkInfo> CheckSdkAsync()
+        {
+            return await Task.Run(() => CheckSdk());
+        }
+
+        public SdkInfo CheckSdk()
+        {
+            var info = new SdkInfo
+            {
+                IsInstalled = IsSdkInstalled(),
+                Version = GetSdkVersion(),
+                Path = GetSdkPath(),
+                InstalledVersions = GetInstalledVersions(),
+                RecommendedVersion = RecommendedSdkVersion,
+                DownloadUrl = GetDownloadUrl()
+            };
+
+            return info;
+        }
+
+        public bool IsSdkInstalled()
+        {
+            try
+            {
+                var process = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = "dotnet",
+                        Arguments = "--version",
+                        RedirectStandardOutput = true,
+                        RedirectStandardError = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                process.Start();
+                var output = process.StandardOutput.ReadToEnd();
+                process.WaitForExit();
+
+                return process.ExitCode == 0 && !string.IsNullOrWhiteSpace(output);
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        public string? GetSdkVersion()
+        {
+            try
+            {
+                var process = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = "dotnet",
+                        Arguments = "--version",
+                        RedirectStandardOutput = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                process.Start();
+                var output = process.StandardOutput.ReadToEnd().Trim();
+                process.WaitForExit();
+
+                return process.ExitCode == 0 ? output : null;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        public List<string> GetInstalledVersions()
+        {
+            var versions = new List<string>();
+
+            try
+            {
+                var process = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = "dotnet",
+                        Arguments = "--list-sdks",
+                        RedirectStandardOutput = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                process.Start();
+                var output = process.StandardOutput.ReadToEnd();
+                process.WaitForExit();
+
+                if (process.ExitCode == 0)
+                {
+                    foreach (var line in output.Split('\n', StringSplitOptions.RemoveEmptyEntries))
+                    {
+                        var parts = line.Trim().Split(' ');
+                        if (parts.Length > 0)
+                        {
+                            versions.Add(parts[0]);
+                        }
+                    }
+                }
+            }
+            catch
+            {
+            }
+
+            return versions;
+        }
+
+        public string GetDownloadUrl()
+        {
+            return DownloadUrlBase;
+        }
+
+        private string? GetSdkPath()
+        {
+            try
+            {
+                var process = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = "dotnet",
+                        Arguments = "--list-sdks",
+                        RedirectStandardOutput = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                process.Start();
+                var output = process.StandardOutput.ReadToEnd();
+                process.WaitForExit();
+
+                if (process.ExitCode == 0)
+                {
+                    foreach (var line in output.Split('\n', StringSplitOptions.RemoveEmptyEntries))
+                    {
+                        var bracketIndex = line.IndexOf('[');
+                        if (bracketIndex > 0)
+                        {
+                            var path = line[(bracketIndex + 1)..].TrimEnd(']');
+                            if (Directory.Exists(path))
+                            {
+                                return path;
+                            }
+                        }
+                    }
+                }
+            }
+            catch
+            {
+            }
+
+            return null;
+        }
+    }
+}